* [PATCH 07/10] ARM: dts: imx6ul: phycore: Add eMMC at usdhc2
From: Stefan Riedmueller @ 2019-07-09 7:19 UTC (permalink / raw)
To: shawnguo, s.hauer, robh+dt, mark.rutland
Cc: devicetree, martyn.welch, linux-kernel, linux-imx, kernel,
festevam, linux-arm-kernel
In-Reply-To: <1562656767-273566-1-git-send-email-s.riedmueller@phytec.de>
The phyCORE-i.MX 6UL/ULL now can have eMMC instead of the NAND flash
memory. Add the eMMC node and disable it by default so it can be enabled
in case it is populated.
Signed-off-by: Stefan Riedmueller <s.riedmueller@phytec.de>
---
arch/arm/boot/dts/imx6ul-phytec-phycore-som.dtsi | 24 ++++++++++++++++++++++++
1 file changed, 24 insertions(+)
diff --git a/arch/arm/boot/dts/imx6ul-phytec-phycore-som.dtsi b/arch/arm/boot/dts/imx6ul-phytec-phycore-som.dtsi
index de6ffbb0183c..09a313daedb8 100644
--- a/arch/arm/boot/dts/imx6ul-phytec-phycore-som.dtsi
+++ b/arch/arm/boot/dts/imx6ul-phytec-phycore-som.dtsi
@@ -90,6 +90,15 @@
status = "okay";
};
+&usdhc2 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_usdhc2>;
+ bus-width = <8>;
+ no-1-8-v;
+ non-removable;
+ status = "disabled";
+};
+
&iomuxc {
pinctrl_enet1: enet1grp {
fsl,pins = <
@@ -145,4 +154,19 @@
>;
};
+ pinctrl_usdhc2: usdhc2grp {
+ fsl,pins = <
+ MX6UL_PAD_NAND_WE_B__USDHC2_CMD 0x170f9
+ MX6UL_PAD_NAND_RE_B__USDHC2_CLK 0x100f9
+ MX6UL_PAD_NAND_DATA00__USDHC2_DATA0 0x170f9
+ MX6UL_PAD_NAND_DATA01__USDHC2_DATA1 0x170f9
+ MX6UL_PAD_NAND_DATA02__USDHC2_DATA2 0x170f9
+ MX6UL_PAD_NAND_DATA03__USDHC2_DATA3 0x170f9
+ MX6UL_PAD_NAND_DATA04__USDHC2_DATA4 0x170f9
+ MX6UL_PAD_NAND_DATA05__USDHC2_DATA5 0x170f9
+ MX6UL_PAD_NAND_DATA06__USDHC2_DATA6 0x170f9
+ MX6UL_PAD_NAND_DATA07__USDHC2_DATA7 0x170f9
+ >;
+ };
+
};
--
2.7.4
^ permalink raw reply related
* [PATCH 06/10] ARM: dts: imx6ul: segin: Only enable NAND if it is populated
From: Stefan Riedmueller @ 2019-07-09 7:19 UTC (permalink / raw)
To: shawnguo, s.hauer, robh+dt, mark.rutland
Cc: devicetree, martyn.welch, linux-kernel, linux-imx, kernel,
festevam, linux-arm-kernel
In-Reply-To: <1562656767-273566-1-git-send-email-s.riedmueller@phytec.de>
The phyCORE-i.MX 6UL/ULL now comes either with NAND flash or eMMC. We
have to configure the populated memory type in the device tree files. So
the GPMI node gets disabled by default and only enabled if populated.
Signed-off-by: Stefan Riedmueller <s.riedmueller@phytec.de>
---
arch/arm/boot/dts/imx6ul-phytec-phycore-som.dtsi | 2 +-
arch/arm/boot/dts/imx6ul-phytec-segin-ff-rdk-nand.dts | 4 ++++
2 files changed, 5 insertions(+), 1 deletion(-)
diff --git a/arch/arm/boot/dts/imx6ul-phytec-phycore-som.dtsi b/arch/arm/boot/dts/imx6ul-phytec-phycore-som.dtsi
index fee7a7e938ee..de6ffbb0183c 100644
--- a/arch/arm/boot/dts/imx6ul-phytec-phycore-som.dtsi
+++ b/arch/arm/boot/dts/imx6ul-phytec-phycore-som.dtsi
@@ -65,7 +65,7 @@
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_gpmi_nand>;
nand-on-flash-bbt;
- status = "okay";
+ status = "disabled";
};
&i2c1 {
diff --git a/arch/arm/boot/dts/imx6ul-phytec-segin-ff-rdk-nand.dts b/arch/arm/boot/dts/imx6ul-phytec-segin-ff-rdk-nand.dts
index 81a82dd65019..c6ef13685a7c 100644
--- a/arch/arm/boot/dts/imx6ul-phytec-segin-ff-rdk-nand.dts
+++ b/arch/arm/boot/dts/imx6ul-phytec-segin-ff-rdk-nand.dts
@@ -50,6 +50,10 @@
status = "okay";
};
+&gpmi {
+ status = "okay";
+};
+
&i2c_rtc {
status = "okay";
};
--
2.7.4
^ permalink raw reply related
* [PATCH 05/10] ARM: dts: imx6ul: segin: Make FEC and ethphy configurable in dts
From: Stefan Riedmueller @ 2019-07-09 7:19 UTC (permalink / raw)
To: shawnguo, s.hauer, robh+dt, mark.rutland
Cc: devicetree, martyn.welch, linux-kernel, linux-imx, kernel,
festevam, linux-arm-kernel
In-Reply-To: <1562656767-273566-1-git-send-email-s.riedmueller@phytec.de>
To disable Ethernet interfaces in case they are not populated
make the FEC and Ethernet PHY status configurable in the dts files.
Also change the Ethernet PHYs labels to make them correspond to
the MDIO address.
Signed-off-by: Stefan Riedmueller <s.riedmueller@phytec.de>
---
arch/arm/boot/dts/imx6ul-phytec-phycore-som.dtsi | 7 ++++---
arch/arm/boot/dts/imx6ul-phytec-segin-ff-rdk-nand.dts | 12 ++++++++++++
arch/arm/boot/dts/imx6ul-phytec-segin.dtsi | 5 +++--
3 files changed, 19 insertions(+), 5 deletions(-)
diff --git a/arch/arm/boot/dts/imx6ul-phytec-phycore-som.dtsi b/arch/arm/boot/dts/imx6ul-phytec-phycore-som.dtsi
index 73266b4a889b..fee7a7e938ee 100644
--- a/arch/arm/boot/dts/imx6ul-phytec-phycore-som.dtsi
+++ b/arch/arm/boot/dts/imx6ul-phytec-phycore-som.dtsi
@@ -42,20 +42,21 @@
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_enet1>;
phy-mode = "rmii";
- phy-handle = <ðphy0>;
- status = "okay";
+ phy-handle = <ðphy1>;
+ status = "disabled";
mdio: mdio {
#address-cells = <1>;
#size-cells = <0>;
- ethphy0: ethernet-phy@1 {
+ ethphy1: ethernet-phy@1 {
reg = <1>;
interrupt-parent = <&gpio1>;
interrupts = <2 IRQ_TYPE_LEVEL_LOW>;
micrel,led-mode = <1>;
clocks = <&clks IMX6UL_CLK_ENET_REF>;
clock-names = "rmii-ref";
+ status = "disabled";
};
};
};
diff --git a/arch/arm/boot/dts/imx6ul-phytec-segin-ff-rdk-nand.dts b/arch/arm/boot/dts/imx6ul-phytec-segin-ff-rdk-nand.dts
index dc06029c5701..81a82dd65019 100644
--- a/arch/arm/boot/dts/imx6ul-phytec-segin-ff-rdk-nand.dts
+++ b/arch/arm/boot/dts/imx6ul-phytec-segin-ff-rdk-nand.dts
@@ -34,6 +34,18 @@
status = "okay";
};
+ðphy1 {
+ status = "okay";
+};
+
+ðphy2 {
+ status = "okay";
+};
+
+&fec1 {
+ status = "okay";
+};
+
&fec2 {
status = "okay";
};
diff --git a/arch/arm/boot/dts/imx6ul-phytec-segin.dtsi b/arch/arm/boot/dts/imx6ul-phytec-segin.dtsi
index 28ba3a4c4c74..7cd24ec40c36 100644
--- a/arch/arm/boot/dts/imx6ul-phytec-segin.dtsi
+++ b/arch/arm/boot/dts/imx6ul-phytec-segin.dtsi
@@ -107,7 +107,7 @@
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_enet2>;
phy-mode = "rmii";
- phy-handle = <ðphy1>;
+ phy-handle = <ðphy2>;
status = "disabled";
};
@@ -160,11 +160,12 @@
};
&mdio {
- ethphy1: ethernet-phy@2 {
+ ethphy2: ethernet-phy@2 {
reg = <2>;
micrel,led-mode = <1>;
clocks = <&clks IMX6UL_CLK_ENET2_REF>;
clock-names = "rmii-ref";
+ status = "disabled";
};
};
--
2.7.4
^ permalink raw reply related
* [PATCH 04/10] ARM: dts: imx6ul: segin: Fix LED naming for phyCORE and PEB-EVAL-01
From: Stefan Riedmueller @ 2019-07-09 7:19 UTC (permalink / raw)
To: shawnguo, s.hauer, robh+dt, mark.rutland
Cc: devicetree, martyn.welch, linux-kernel, linux-imx, kernel,
festevam, linux-arm-kernel
In-Reply-To: <1562656767-273566-1-git-send-email-s.riedmueller@phytec.de>
Fix node name for the user LEDs to prevent the pinctrl of the phyCORE's
leds node from being overwritten. Also use more generic names for user
LEDs.
Signed-off-by: Stefan Riedmueller <s.riedmueller@phytec.de>
---
arch/arm/boot/dts/imx6ul-phytec-phycore-som.dtsi | 3 +--
arch/arm/boot/dts/imx6ul-phytec-segin-peb-eval-01.dtsi | 16 +++++++++-------
2 files changed, 10 insertions(+), 9 deletions(-)
diff --git a/arch/arm/boot/dts/imx6ul-phytec-phycore-som.dtsi b/arch/arm/boot/dts/imx6ul-phytec-phycore-som.dtsi
index 1b745582911c..73266b4a889b 100644
--- a/arch/arm/boot/dts/imx6ul-phytec-phycore-som.dtsi
+++ b/arch/arm/boot/dts/imx6ul-phytec-phycore-som.dtsi
@@ -31,8 +31,7 @@
pinctrl-0 = <&pinctrl_gpioleds_som>;
compatible = "gpio-leds";
- led_green {
- label = "phycore:green";
+ phycore-green {
gpios = <&gpio5 4 GPIO_ACTIVE_HIGH>;
linux,default-trigger = "heartbeat";
};
diff --git a/arch/arm/boot/dts/imx6ul-phytec-segin-peb-eval-01.dtsi b/arch/arm/boot/dts/imx6ul-phytec-segin-peb-eval-01.dtsi
index e2f38f39a6ad..2f3fd32a1167 100644
--- a/arch/arm/boot/dts/imx6ul-phytec-segin-peb-eval-01.dtsi
+++ b/arch/arm/boot/dts/imx6ul-phytec-segin-peb-eval-01.dtsi
@@ -21,20 +21,22 @@
};
};
- user_leds: leds {
+ user_leds: user-leds {
compatible = "gpio-leds";
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_user_leds>;
status = "disabled";
- led_yellow {
- gpios = <&gpio1 1 GPIO_ACTIVE_HIGH>;
- linux,default-trigger = "default-on";
+ user-led1 {
+ gpios = <&gpio1 10 GPIO_ACTIVE_HIGH>;
+ linux,default-trigger = "gpio";
+ default-state = "on";
};
- led_red {
- gpios = <&gpio1 10 GPIO_ACTIVE_HIGH>;
- linux,default-trigger = "default-on";
+ user-led2 {
+ gpios = <&gpio1 1 GPIO_ACTIVE_HIGH>;
+ linux,default-trigger = "gpio";
+ default-state = "on";
};
};
};
--
2.7.4
^ permalink raw reply related
* [PATCH 03/10] ARM: dts: imx6ul: segin: Reduce eth drive strength
From: Stefan Riedmueller @ 2019-07-09 7:19 UTC (permalink / raw)
To: shawnguo, s.hauer, robh+dt, mark.rutland
Cc: devicetree, martyn.welch, linux-kernel, linux-imx, kernel,
festevam, linux-arm-kernel
In-Reply-To: <1562656767-273566-1-git-send-email-s.riedmueller@phytec.de>
Reduce the drive strength for the MDC, MDIO and TX pins of FEC1 and FEC2
on the phyBOARD-Segin to improve signal quality and EMC. Also disable
internal pull-ups on the MDC and MDIO pins.
Signed-off-by: Stefan Riedmueller <s.riedmueller@phytec.de>
---
arch/arm/boot/dts/imx6ul-phytec-phycore-som.dtsi | 12 ++++++------
arch/arm/boot/dts/imx6ul-phytec-segin.dtsi | 8 ++++----
2 files changed, 10 insertions(+), 10 deletions(-)
diff --git a/arch/arm/boot/dts/imx6ul-phytec-phycore-som.dtsi b/arch/arm/boot/dts/imx6ul-phytec-phycore-som.dtsi
index bff13d0eb064..1b745582911c 100644
--- a/arch/arm/boot/dts/imx6ul-phytec-phycore-som.dtsi
+++ b/arch/arm/boot/dts/imx6ul-phytec-phycore-som.dtsi
@@ -93,16 +93,16 @@
&iomuxc {
pinctrl_enet1: enet1grp {
fsl,pins = <
- MX6UL_PAD_GPIO1_IO07__ENET1_MDC 0x1b0b0
- MX6UL_PAD_GPIO1_IO06__ENET1_MDIO 0x1b0b0
+ MX6UL_PAD_GPIO1_IO07__ENET1_MDC 0x10010
+ MX6UL_PAD_GPIO1_IO06__ENET1_MDIO 0x10010
MX6UL_PAD_ENET1_RX_EN__ENET1_RX_EN 0x1b0b0
MX6UL_PAD_ENET1_RX_ER__ENET1_RX_ER 0x1b0b0
MX6UL_PAD_ENET1_RX_DATA0__ENET1_RDATA00 0x1b0b0
MX6UL_PAD_ENET1_RX_DATA1__ENET1_RDATA01 0x1b0b0
- MX6UL_PAD_ENET1_TX_EN__ENET1_TX_EN 0x1b0b0
- MX6UL_PAD_ENET1_TX_DATA0__ENET1_TDATA00 0x1b0b0
- MX6UL_PAD_ENET1_TX_DATA1__ENET1_TDATA01 0x1b0b0
- MX6UL_PAD_ENET1_TX_CLK__ENET1_REF_CLK1 0x4001b031
+ MX6UL_PAD_ENET1_TX_EN__ENET1_TX_EN 0x1b010
+ MX6UL_PAD_ENET1_TX_DATA0__ENET1_TDATA00 0x1b010
+ MX6UL_PAD_ENET1_TX_DATA1__ENET1_TDATA01 0x1b010
+ MX6UL_PAD_ENET1_TX_CLK__ENET1_REF_CLK1 0x4001b010
MX6UL_PAD_GPIO1_IO02__GPIO1_IO02 0x17059
>;
};
diff --git a/arch/arm/boot/dts/imx6ul-phytec-segin.dtsi b/arch/arm/boot/dts/imx6ul-phytec-segin.dtsi
index 78425c3290a1..28ba3a4c4c74 100644
--- a/arch/arm/boot/dts/imx6ul-phytec-segin.dtsi
+++ b/arch/arm/boot/dts/imx6ul-phytec-segin.dtsi
@@ -230,10 +230,10 @@
MX6UL_PAD_ENET2_RX_ER__ENET2_RX_ER 0x1b0b0
MX6UL_PAD_ENET2_RX_DATA0__ENET2_RDATA00 0x1b0b0
MX6UL_PAD_ENET2_RX_DATA1__ENET2_RDATA01 0x1b0b0
- MX6UL_PAD_ENET2_TX_EN__ENET2_TX_EN 0x1b0b0
- MX6UL_PAD_ENET2_TX_DATA0__ENET2_TDATA00 0x1b0b0
- MX6UL_PAD_ENET2_TX_DATA1__ENET2_TDATA01 0x1b0b0
- MX6UL_PAD_ENET2_TX_CLK__ENET2_REF_CLK2 0x4001b031
+ MX6UL_PAD_ENET2_TX_EN__ENET2_TX_EN 0x1b010
+ MX6UL_PAD_ENET2_TX_DATA0__ENET2_TDATA00 0x1b010
+ MX6UL_PAD_ENET2_TX_DATA1__ENET2_TDATA01 0x1b010
+ MX6UL_PAD_ENET2_TX_CLK__ENET2_REF_CLK2 0x4001b010
>;
};
--
2.7.4
^ permalink raw reply related
* [PATCH 02/10] ARM: dts: imx6ul: segin: Add boot media to dts filename
From: Stefan Riedmueller @ 2019-07-09 7:19 UTC (permalink / raw)
To: shawnguo, s.hauer, robh+dt, mark.rutland
Cc: devicetree, martyn.welch, linux-kernel, linux-imx, kernel,
festevam, linux-arm-kernel
In-Reply-To: <1562656767-273566-1-git-send-email-s.riedmueller@phytec.de>
There is now a PHYTEC phyCORE-i.MX 6UL with eMMC instead of NAND flash
available. The dts filename needs to reflect that to differentiate both.
Signed-off-by: Stefan Riedmueller <s.riedmueller@phytec.de>
---
arch/arm/boot/dts/Makefile | 2 +-
...l-phytec-segin-ff-rdk.dts => imx6ul-phytec-segin-ff-rdk-nand.dts} | 5 +++--
2 files changed, 4 insertions(+), 3 deletions(-)
rename arch/arm/boot/dts/{imx6ul-phytec-segin-ff-rdk.dts => imx6ul-phytec-segin-ff-rdk-nand.dts} (85%)
diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index e1924b06f3cb..668b57c8cc57 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -573,7 +573,7 @@ dtb-$(CONFIG_SOC_IMX6UL) += \
imx6ul-opos6uldev.dtb \
imx6ul-pico-hobbit.dtb \
imx6ul-pico-pi.dtb \
- imx6ul-phytec-segin-ff-rdk.dtb \
+ imx6ul-phytec-segin-ff-rdk-nand.dtb \
imx6ul-tx6ul-0010.dtb \
imx6ul-tx6ul-0011.dtb \
imx6ul-tx6ul-mainboard.dtb \
diff --git a/arch/arm/boot/dts/imx6ul-phytec-segin-ff-rdk.dts b/arch/arm/boot/dts/imx6ul-phytec-segin-ff-rdk-nand.dts
similarity index 85%
rename from arch/arm/boot/dts/imx6ul-phytec-segin-ff-rdk.dts
rename to arch/arm/boot/dts/imx6ul-phytec-segin-ff-rdk-nand.dts
index 1e59183a2f7c..dc06029c5701 100644
--- a/arch/arm/boot/dts/imx6ul-phytec-segin-ff-rdk.dts
+++ b/arch/arm/boot/dts/imx6ul-phytec-segin-ff-rdk-nand.dts
@@ -10,8 +10,9 @@
#include "imx6ul-phytec-segin-peb-eval-01.dtsi"
/ {
- model = "PHYTEC phyBOARD-Segin i.MX6 UltraLite Full Featured";
- compatible = "phytec,imx6ul-pbacd10", "phytec,imx6ul-pcl063", "fsl,imx6ul";
+ model = "PHYTEC phyBOARD-Segin i.MX6 UltraLite Full Featured with NAND";
+ compatible = "phytec,imx6ul-pbacd10-nand", "phytec,imx6ul-pbacd10",
+ "phytec,imx6ul-pcl063", "fsl,imx6ul";
};
&adc1 {
--
2.7.4
^ permalink raw reply related
* [PATCH 01/10] ARM: dts: imx6ul: phyboard-segin: Rename dts to PHYTEC name scheme
From: Stefan Riedmueller @ 2019-07-09 7:19 UTC (permalink / raw)
To: shawnguo, s.hauer, robh+dt, mark.rutland
Cc: devicetree, martyn.welch, linux-kernel, linux-imx, kernel,
festevam, linux-arm-kernel
In-Reply-To: <1562656767-273566-1-git-send-email-s.riedmueller@phytec.de>
Use the same name scheme for the phyBOARD-Segin and the phyCORE-i.MX
6UL as is used for the PHYTEC phyBOARD-Mira and phyCORE-i.MX 6.
This is only a cosmetic change and there is no functional change
intended.
Signed-off-by: Stefan Riedmueller <s.riedmueller@phytec.de>
---
arch/arm/boot/dts/Makefile | 2 +-
.../{imx6ul-phytec-pcl063.dtsi => imx6ul-phytec-phycore-som.dtsi} | 2 +-
...tec-phyboard-segin-full.dts => imx6ul-phytec-segin-ff-rdk.dts} | 8 ++++----
...ytec-peb-eval-01.dtsi => imx6ul-phytec-segin-peb-eval-01.dtsi} | 0
...imx6ul-phytec-phyboard-segin.dtsi => imx6ul-phytec-segin.dtsi} | 2 +-
5 files changed, 7 insertions(+), 7 deletions(-)
rename arch/arm/boot/dts/{imx6ul-phytec-pcl063.dtsi => imx6ul-phytec-phycore-som.dtsi} (98%)
rename arch/arm/boot/dts/{imx6ul-phytec-phyboard-segin-full.dts => imx6ul-phytec-segin-ff-rdk.dts} (84%)
rename arch/arm/boot/dts/{imx6ul-phytec-peb-eval-01.dtsi => imx6ul-phytec-segin-peb-eval-01.dtsi} (100%)
rename arch/arm/boot/dts/{imx6ul-phytec-phyboard-segin.dtsi => imx6ul-phytec-segin.dtsi} (99%)
diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index dab2914fa293..e1924b06f3cb 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -573,7 +573,7 @@ dtb-$(CONFIG_SOC_IMX6UL) += \
imx6ul-opos6uldev.dtb \
imx6ul-pico-hobbit.dtb \
imx6ul-pico-pi.dtb \
- imx6ul-phytec-phyboard-segin-full.dtb \
+ imx6ul-phytec-segin-ff-rdk.dtb \
imx6ul-tx6ul-0010.dtb \
imx6ul-tx6ul-0011.dtb \
imx6ul-tx6ul-mainboard.dtb \
diff --git a/arch/arm/boot/dts/imx6ul-phytec-pcl063.dtsi b/arch/arm/boot/dts/imx6ul-phytec-phycore-som.dtsi
similarity index 98%
rename from arch/arm/boot/dts/imx6ul-phytec-pcl063.dtsi
rename to arch/arm/boot/dts/imx6ul-phytec-phycore-som.dtsi
index fc2997449b49..bff13d0eb064 100644
--- a/arch/arm/boot/dts/imx6ul-phytec-pcl063.dtsi
+++ b/arch/arm/boot/dts/imx6ul-phytec-phycore-som.dtsi
@@ -10,7 +10,7 @@
#include "imx6ul.dtsi"
/ {
- model = "Phytec phyCORE i.MX6 UltraLite";
+ model = "PHYTEC phyCORE-i.MX6 UltraLite";
compatible = "phytec,imx6ul-pcl063", "fsl,imx6ul";
chosen {
diff --git a/arch/arm/boot/dts/imx6ul-phytec-phyboard-segin-full.dts b/arch/arm/boot/dts/imx6ul-phytec-segin-ff-rdk.dts
similarity index 84%
rename from arch/arm/boot/dts/imx6ul-phytec-phyboard-segin-full.dts
rename to arch/arm/boot/dts/imx6ul-phytec-segin-ff-rdk.dts
index b6a1407a9d44..1e59183a2f7c 100644
--- a/arch/arm/boot/dts/imx6ul-phytec-phyboard-segin-full.dts
+++ b/arch/arm/boot/dts/imx6ul-phytec-segin-ff-rdk.dts
@@ -5,12 +5,12 @@
*/
/dts-v1/;
-#include "imx6ul-phytec-pcl063.dtsi"
-#include "imx6ul-phytec-phyboard-segin.dtsi"
-#include "imx6ul-phytec-peb-eval-01.dtsi"
+#include "imx6ul-phytec-phycore-som.dtsi"
+#include "imx6ul-phytec-segin.dtsi"
+#include "imx6ul-phytec-segin-peb-eval-01.dtsi"
/ {
- model = "Phytec phyBOARD-Segin i.MX6 UltraLite Full Featured";
+ model = "PHYTEC phyBOARD-Segin i.MX6 UltraLite Full Featured";
compatible = "phytec,imx6ul-pbacd10", "phytec,imx6ul-pcl063", "fsl,imx6ul";
};
diff --git a/arch/arm/boot/dts/imx6ul-phytec-peb-eval-01.dtsi b/arch/arm/boot/dts/imx6ul-phytec-segin-peb-eval-01.dtsi
similarity index 100%
rename from arch/arm/boot/dts/imx6ul-phytec-peb-eval-01.dtsi
rename to arch/arm/boot/dts/imx6ul-phytec-segin-peb-eval-01.dtsi
diff --git a/arch/arm/boot/dts/imx6ul-phytec-phyboard-segin.dtsi b/arch/arm/boot/dts/imx6ul-phytec-segin.dtsi
similarity index 99%
rename from arch/arm/boot/dts/imx6ul-phytec-phyboard-segin.dtsi
rename to arch/arm/boot/dts/imx6ul-phytec-segin.dtsi
index 7bf439a77d2c..78425c3290a1 100644
--- a/arch/arm/boot/dts/imx6ul-phytec-phyboard-segin.dtsi
+++ b/arch/arm/boot/dts/imx6ul-phytec-segin.dtsi
@@ -5,7 +5,7 @@
*/
/ {
- model = "Phytec phyBOARD-Segin i.MX6 UltraLite";
+ model = "PHYTEC phyBOARD-Segin i.MX6 UltraLite";
compatible = "phytec,imx6ul-pbacd-10", "phytec,imx6ul-pcl063", "fsl,imx6ul";
aliases {
--
2.7.4
^ permalink raw reply related
* [PATCH 00/10] Add further support for PHYTEC phyBOARD-Segin
From: Stefan Riedmueller @ 2019-07-09 7:19 UTC (permalink / raw)
To: shawnguo, s.hauer, robh+dt, mark.rutland
Cc: devicetree, martyn.welch, linux-kernel, linux-imx, kernel,
festevam, linux-arm-kernel
This patchstack adjusts the already existing naming for the PHYTEC
phyBOARD-Segin to the PHYTEC naming scheme that is already used with the
phyCORE-i.MX 6 and the phyBOARD-Mira.
Furthermore it introduces some small fixes and adds support for the PHYTEC
phyCORE-i.MX 6ULL which also comes with the phyBORAD-Segin. It comes in a
full featured option with either NAND flash or eMMC and a low cost option
only with NAND flash.
Stefan Riedmueller (10):
ARM: dts: imx6ul: phyboard-segin: Rename dts to PHYTEC name scheme
ARM: dts: imx6ul: segin: Add boot media to dts filename
ARM: dts: imx6ul: segin: Reduce eth drive strength
ARM: dts: imx6ul: segin: Fix LED naming for phyCORE and PEB-EVAL-01
ARM: dts: imx6ul: segin: Make FEC and ethphy configurable in dts
ARM: dts: imx6ul: segin: Only enable NAND if it is populated
ARM: dts: imx6ul: phycore: Add eMMC at usdhc2
ARM: dts: imx6ul: segin: Move ECSPI interface to board include file
ARM: dts: imx6ul: segin: Move machine include to dts files
ARM: dts: imx6ull: Add support for PHYTEC phyBOARD-Segin with i.MX
6ULL
arch/arm/boot/dts/Makefile | 5 +-
...-pcl063.dtsi => imx6ul-phytec-phycore-som.dtsi} | 51 ++++++++----
...ull.dts => imx6ul-phytec-segin-ff-rdk-nand.dts} | 42 +++++-----
...1.dtsi => imx6ul-phytec-segin-peb-eval-01.dtsi} | 16 ++--
...hyboard-segin.dtsi => imx6ul-phytec-segin.dtsi} | 31 ++++++--
arch/arm/boot/dts/imx6ull-phytec-phycore-som.dtsi | 24 ++++++
.../boot/dts/imx6ull-phytec-segin-ff-rdk-emmc.dts | 93 ++++++++++++++++++++++
.../boot/dts/imx6ull-phytec-segin-ff-rdk-nand.dts | 93 ++++++++++++++++++++++
.../boot/dts/imx6ull-phytec-segin-lc-rdk-nand.dts | 45 +++++++++++
.../boot/dts/imx6ull-phytec-segin-peb-eval-01.dtsi | 19 +++++
arch/arm/boot/dts/imx6ull-phytec-segin.dtsi | 38 +++++++++
11 files changed, 409 insertions(+), 48 deletions(-)
rename arch/arm/boot/dts/{imx6ul-phytec-pcl063.dtsi => imx6ul-phytec-phycore-som.dtsi} (72%)
rename arch/arm/boot/dts/{imx6ul-phytec-phyboard-segin-full.dts => imx6ul-phytec-segin-ff-rdk-nand.dts} (51%)
rename arch/arm/boot/dts/{imx6ul-phytec-peb-eval-01.dtsi => imx6ul-phytec-segin-peb-eval-01.dtsi} (84%)
rename arch/arm/boot/dts/{imx6ul-phytec-phyboard-segin.dtsi => imx6ul-phytec-segin.dtsi} (91%)
create mode 100644 arch/arm/boot/dts/imx6ull-phytec-phycore-som.dtsi
create mode 100644 arch/arm/boot/dts/imx6ull-phytec-segin-ff-rdk-emmc.dts
create mode 100644 arch/arm/boot/dts/imx6ull-phytec-segin-ff-rdk-nand.dts
create mode 100644 arch/arm/boot/dts/imx6ull-phytec-segin-lc-rdk-nand.dts
create mode 100644 arch/arm/boot/dts/imx6ull-phytec-segin-peb-eval-01.dtsi
create mode 100644 arch/arm/boot/dts/imx6ull-phytec-segin.dtsi
--
2.7.4
^ permalink raw reply
* Re: [PATCH v2 1/1] ARM: dts: colibri: introduce dts with UHS-I support enabled
From: Marco Felsch @ 2019-07-09 7:11 UTC (permalink / raw)
To: Marcel Ziswiler
Cc: Igor Opaniuk, stefan@agner.ch, linux-imx@nxp.com,
kernel@pengutronix.de, festevam@gmail.com, mark.rutland@arm.com,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
shawnguo@kernel.org, linux-arm-kernel@lists.infradead.org,
s.hauer@pengutronix.de, robh+dt@kernel.org
In-Reply-To: <90825d175c78f932c3b406c2f376f1b17d583c40.camel@toradex.com>
Hi Marcel,
On 19-07-08 17:09, Marcel Ziswiler wrote:
> Hi Marco
>
> On Tue, 2019-07-02 at 14:51 +0200, Marco Felsch wrote:
> > Hi Igor,
> >
> > On 19-07-02 09:42, Igor Opaniuk wrote:
> > > Hi Marco,
> > >
> > > On Tue, Jul 2, 2019 at 10:27 AM Marco Felsch <
> > > m.felsch@pengutronix.de> wrote:
> > > > Hi Igor,
> > > >
> > > > On 19-05-14 17:38, Igor Opaniuk wrote:
> > > > > Introduce DTS for Colibri iMX6S/DL V1.1x re-design, where UHS-I
> > > > > support was
> > > > > added. Provide proper configuration for VGEN3, which allows
> > > > > that rail to
> > > > > be automatically switched to 1.8 volts for proper UHS-I
> > > > > operation mode.
> > > > >
> > > > > Signed-off-by: Igor Opaniuk <igor.opaniuk@toradex.com>
> > > > > ---
> > > > >
> > > > > v2:
> > > > > - rework hierarchy of dts files, and a separate dtsi for
> > > > > Colibri
> > > > > iMX6S/DL V1.1x re-design, where UHS-I was added
> > > > > - add comments about vgen3 power rail
> > > > > - fix other minor issues, addressing Marcel's comments.
> > > > >
> > > > > arch/arm/boot/dts/Makefile | 1 +
> > > > > .../boot/dts/imx6dl-colibri-v1.1-eval-v3.dts | 220 +++++
> > > > > arch/arm/boot/dts/imx6qdl-colibri-v1.1.dtsi | 852
> > > > > ++++++++++++++++++
> > > > > 3 files changed, 1073 insertions(+)
> > > > > create mode 100644 arch/arm/boot/dts/imx6dl-colibri-v1.1-eval-
> > > > > v3.dts
> > > > > create mode 100644 arch/arm/boot/dts/imx6qdl-colibri-v1.1.dtsi
> > > > >
> > > > > diff --git a/arch/arm/boot/dts/Makefile
> > > > > b/arch/arm/boot/dts/Makefile
> > > > > index dab2914fa293..dc4ea05c8e2a 100644
> > > > > --- a/arch/arm/boot/dts/Makefile
> > > > > +++ b/arch/arm/boot/dts/Makefile
> > > > > @@ -401,6 +401,7 @@ dtb-$(CONFIG_SOC_IMX6Q) += \
> > > > > imx6dl-aristainetos2_4.dtb \
> > > > > imx6dl-aristainetos2_7.dtb \
> > > > > imx6dl-colibri-eval-v3.dtb \
> > > > > + imx6dl-colibri-v1.1-eval-v3.dtb \
> > > >
> > > > I don't know the style convention but xxx-v1.1-eval-v3.dtb seems
> > > > weird
> > > > to me.
>
> Absolutely nothing weird about it at all. See e.g. other mainline
> device trees of us:
>
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/arch/arm/boot/dts/imx6q-apalis-ixora-v1.1.dts
>
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/arch/arm/boot/dts/tegra124-apalis-v1.2-eval.dts
>
> etc.
It was just a nitpick. It seems that there isn't a common way.
>
> > > This was done intentionally. The first version (v1.1) is for SoM,
> > > the
> > > second one (v3)
> > > is for a carrier board. There is an explanation below.
> >
> > I mean the point between the v1.1 maybe this should be v11 or v1_1.
>
> No, not at all. That's really how hardware gets version-controlled e.g.
> see:
>
> https://developer.toradex.com/products/colibri-imx6#revision-history
>
> What's wrong with that dot?
Please look at my above comment.
> > > > > imx6dl-cubox-i.dtb \
> > > > > imx6dl-cubox-i-emmc-som-v15.dtb \
> > > > > imx6dl-cubox-i-som-v15.dtb \
> > > > > diff --git a/arch/arm/boot/dts/imx6dl-colibri-v1.1-eval-v3.dts
> > > > > b/arch/arm/boot/dts/imx6dl-colibri-v1.1-eval-v3.dts
> > > > > new file mode 100644
> > > > > index 000000000000..8ed7a528e7c7
> > > > > --- /dev/null
> > > > > +++ b/arch/arm/boot/dts/imx6dl-colibri-v1.1-eval-v3.dts
> > > > > @@ -0,0 +1,220 @@
> > > > > +// SPDX-License-Identifier: GPL-2.0+ OR X11
> > > > > +/*
> > > > > + * Copyright 2019 Toradex AG
> > > > > + */
> > > > > +
> > > > > +/dts-v1/;
> > > > > +
> > > > > +#include <dt-bindings/input/input.h>
> > > > > +#include <dt-bindings/interrupt-controller/irq.h>
> > > > > +#include "imx6dl.dtsi"
> > > > > +#include "imx6qdl-colibri-v1.1.dtsi"
> > > >
> > > > Same here..
> > > >
> > > > Why you don't use the exsiting "imx6qdl-colibri.dtsi"? The
> > > > "imx6qdl-colibri-v1.1.dtsi" would be a lot of boilerplate code.
> > > > Instead
> > > > you can use the existing one and apply your changes. I don't know
> > > > why
> > > > the vgen3 node isn't available currently but you can add them
> > > > without
> > > > worries. Just drop the boot-default-on property within the the
> > > > dtsi. Why
> > > > do you need this at all?
> > > >
> > > > I checked the v1.1 and the v1 DTS to and this is exactly the same
> > > > code.
> > > > So you can avoid even more code and improve maintainability.
> > > >
> > > > I would do something like this:
> > >
> > > This was done already for v1, and there was a discussion about that
> > > [1].
> > > The problem is that it brakes the earlier defined hierarchy of
> > > device tree
> > > sources [2].
> >
> > Can you provide me the link please?
>
> You mean this one?
>
> https://developer.toradex.com/device-tree-customization
I mean the links mentioned by [1] and [2].
> > > Currently we have 3 levels:
> > > 1. SoC level: imx6qdl.dtsi(all iMX6 SoCs) and imx6dl.dtsi (iMX6DL/S
> > > SoCs),
> > > that contain CPU/GPU configuration, all common peripherals
> > > configuration.
> > > 2. SoM level: imx6qdl-colibri.dtsi common configuration (pinmuxes,
> > > UART),
> > > common on module peripherals
> > > 3. Carrier board level: imx6dl-colibri-v1.1-eval-v3.dts specific
> > > carrier board
> > > configuration (where eval-v3 is the name and the version of a
> > > carrier board)
> >
> > I know that kind of hierarchy ;)
>
> Sure.
>
> > > The UHS-I feature was not present on V1.0x Colibri iMX6 modules
> > > but got only added later as part of the V1.1x re-design. For this
> > > purposes I added
> > > imx6qdl-colibri-v1.1.dtsi for this particular re-designed version.
> >
> > The vgen3 regulator node can be available in the imx6qdl-colibri.dtsi
> > even
> > if it isn't used on the v1.0. The comment should highlight that.
> >
> > > Another issue is that a proper pinctrl and power configuration
> > > should
> > > be provided for usdhc1 to support UHS-I feature, which is done in
> > > Carier
> > > board-level, this is why a separate DTS file (specifically for
> > > Colibri iMX6 v1.1 SoM) was introduced.
> >
> > The last dts node will override/expand the underlying nodes. The
> > 'no-1-8-v' should be moved to the v1.0 dts or you need to add
> > '/delete-property/ no-1-8-v' to your v1.1 dts. All other properties
> > will
> > exapand the node.
>
> While that is true such constructs just confuse most of our customers.
> We really like to keep it as simple as possible.
Then the 'no-1-8-v' should be moved to the v1.0 dts.
> > > I understand your objection here, but unfortunately I have to
> > > follow
> > > this hierarchy.
> >
> > Pleas check my above comments. Your patche duplicates a lot of code
> > which is common.
>
> While true this is much easier to understand and for our customers to
> further customise.
I understand that but going your way isn't the best to share future
fixes. Imagine a customer fixes the v1.1 and only the v1.1 but this fix
also applies to the v1.0. So the next customer have to debug the bug a
second time for the v1.0. Now it's get even worse if there is a possible
v1.3. IMHO we should share the common code since the only difference is
the 1.8V eMMC rail but that's up to Shawn.
Regards,
Marco
> > > As a trade-off some common parts can be moved to SoM-level common
> > > dtsi file,
> > > something like imx6qdl-colibri-common.dtsi, and then introduce two
> > > dtsi files
> > > for 1.0 and 1.1 versions of this SoM(imx6qdl-colibri-v1.0.dtsi and
> > > imx6qdl-colibri-v1.1.dtsi
> > > accordingly).
>
> Yes, but that even introduces one more level while most customers do
> not even understand the basic SoC, SoM, carrier board levels.
>
> > Please check my above comments.
> >
> > Regards,
> > Marco
>
> Cheers
>
> Marcel
>
> > > > 8<-------------------------------------------------
> > > > // SPDX-License-Identifier: GPL-2.0+ OR X11
> > > > /*
> > > > * Copyright 2019 Toradex AG
> > > > */
> > > >
> > > > #inculde "imx6dl-colibri-eval-v3.dts"
> > > >
> > > > / {
> > > > model = "Toradex Colibri iMX6DL/S V1.1 on Colibri
> > > > Evaluation Board V3";
> > > > };
> > > >
> > > > &iomuxc {
> > > > pinctrl_usdhc1_100mhz: usdhc1grp100mhz {
> > > > fsl,pins = <
> > > > MX6QDL_PAD_SD1_CMD__SD1_CMD 0x170b1
> > > > MX6QDL_PAD_SD1_CLK__SD1_CLK 0x100b1
> > > > MX6QDL_PAD_SD1_DAT0__SD1_DATA0 0x170b1
> > > > MX6QDL_PAD_SD1_DAT1__SD1_DATA1 0x170b1
> > > > MX6QDL_PAD_SD1_DAT2__SD1_DATA2 0x170b1
> > > > MX6QDL_PAD_SD1_DAT3__SD1_DATA3 0x170b1
> > > > >;
> > > > };
> > > >
> > > > pinctrl_usdhc1_200mhz: usdhc1grp200mhz {
> > > > fsl,pins = <
> > > > MX6QDL_PAD_SD1_CMD__SD1_CMD 0x170f1
> > > > MX6QDL_PAD_SD1_CLK__SD1_CLK 0x100f1
> > > > MX6QDL_PAD_SD1_DAT0__SD1_DATA0 0x170f1
> > > > MX6QDL_PAD_SD1_DAT1__SD1_DATA1 0x170f1
> > > > MX6QDL_PAD_SD1_DAT2__SD1_DATA2 0x170f1
> > > > MX6QDL_PAD_SD1_DAT3__SD1_DATA3 0x170f1
> > > > >;
> > > > };
> > > > };
> > > >
> > > > /* Colibri MMC */
> > > > &usdhc1 {
> > > > pinctrl-names = "default", "state_100mhz",
> > > > "state_200mhz";
> > > > pinctrl-0 = <&pinctrl_usdhc1 &pinctrl_mmc_cd>;
> > > > pinctrl-1 = <&pinctrl_usdhc1_100mhz &pinctrl_mmc_cd>;
> > > > pinctrl-2 = <&pinctrl_usdhc1_200mhz &pinctrl_mmc_cd>;
> > > > vmmc-supply = <®_module_3v3>;
> > > > vqmmc-supply = <&vgen3_reg>;
> > > > bus-width = <4>;
> > > > cd-gpios = <&gpio2 5 GPIO_ACTIVE_LOW>; /* MMCD */
> > > > disable-wp;
> > > > enable-sdio-wakeup;
> > > > keep-power-in-suspend;
> > > > sd-uhs-sdr12;
> > > > sd-uhs-sdr25;
> > > > sd-uhs-sdr50;
> > > > sd-uhs-sdr104;
> > > > status = "disabled";
> > > > };
> > > > 8<-------------------------------------------------
> > > >
> > > > The vgen3_reg update should be done on the imx6qdl-colibri.dtsi.
> > > >
> > > > I hope this will help you.
> > > >
> > > > Regards,
> > > > Marco
> > > >
> > > > > +
> > > > > +/ {
> > > > > + model = "Toradex Colibri iMX6DL/S V1.1 on Colibri
> > > > > Evaluation Board V3";
> > > > > + compatible = "toradex,colibri_imx6dl-eval-v3",
> > > > > "toradex,colibri_imx6dl",
> > > > > + "fsl,imx6dl";
> > > > > +
> > > > > + /* Will be filled by the bootloader */
> > > > > + memory@10000000 {
> > > > > + device_type = "memory";
> > > > > + reg = <0x10000000 0>;
> > > > > + };
> > > > > +
> > > > > + aliases {
> > > > > + i2c0 = &i2c2;
> > > > > + i2c1 = &i2c3;
> > > > > + };
> > > > > +
> > > > > + aliases {
> > > > > + rtc0 = &rtc_i2c;
> > > > > + rtc1 = &snvs_rtc;
> > > > > + };
> > > > > +
> > > > > + chosen {
> > > > > + stdout-path = "serial0:115200n8";
> > > > > + };
> > > > > +
> > > > > + /* Fixed crystal dedicated to mcp251x */
> > > > > + clk16m: clock-16m {
> > > > > + compatible = "fixed-clock";
> > > > > + #clock-cells = <0>;
> > > > > + clock-frequency = <16000000>;
> > > > > + clock-output-names = "clk16m";
> > > > > + };
> > > > > +
> > > > > + gpio-keys {
> > > > > + compatible = "gpio-keys";
> > > > > + pinctrl-names = "default";
> > > > > + pinctrl-0 = <&pinctrl_gpio_keys>;
> > > > > +
> > > > > + wakeup {
> > > > > + label = "Wake-Up";
> > > > > + gpios = <&gpio2 22 GPIO_ACTIVE_HIGH>; /*
> > > > > SODIMM 45 */
> > > > > + linux,code = <KEY_WAKEUP>;
> > > > > + debounce-interval = <10>;
> > > > > + wakeup-source;
> > > > > + };
> > > > > + };
> > > > > +
> > > > > + lcd_display: disp0 {
> > > > > + compatible = "fsl,imx-parallel-display";
> > > > > + #address-cells = <1>;
> > > > > + #size-cells = <0>;
> > > > > + interface-pix-fmt = "bgr666";
> > > > > + pinctrl-names = "default";
> > > > > + pinctrl-0 = <&pinctrl_ipu1_lcdif>;
> > > > > + status = "okay";
> > > > > +
> > > > > + port@0 {
> > > > > + reg = <0>;
> > > > > +
> > > > > + lcd_display_in: endpoint {
> > > > > + remote-endpoint =
> > > > > <&ipu1_di0_disp0>;
> > > > > + };
> > > > > + };
> > > > > +
> > > > > + port@1 {
> > > > > + reg = <1>;
> > > > > +
> > > > > + lcd_display_out: endpoint {
> > > > > + remote-endpoint =
> > > > > <&lcd_panel_in>;
> > > > > + };
> > > > > + };
> > > > > + };
> > > > > +
> > > > > + panel: panel {
> > > > > + /*
> > > > > + * edt,et057090dhu: EDT 5.7" LCD TFT
> > > > > + * edt,et070080dh6: EDT 7.0" LCD TFT
> > > > > + */
> > > > > + compatible = "edt,et057090dhu";
> > > > > + backlight = <&backlight>;
> > > > > +
> > > > > + port {
> > > > > + lcd_panel_in: endpoint {
> > > > > + remote-endpoint =
> > > > > <&lcd_display_out>;
> > > > > + };
> > > > > + };
> > > > > + };
> > > > > +};
> > > > > +
> > > > > +&backlight {
> > > > > + brightness-levels = <0 127 191 223 239 247 251 255>;
> > > > > + default-brightness-level = <1>;
> > > > > + status = "okay";
> > > > > +};
> > > > > +
> > > > > +/* Colibri SSP */
> > > > > +&ecspi4 {
> > > > > + status = "okay";
> > > > > +
> > > > > + mcp251x0: mcp251x@0 {
> > > > > + compatible = "microchip,mcp2515";
> > > > > + reg = <0>;
> > > > > + clocks = <&clk16m>;
> > > > > + interrupt-parent = <&gpio3>;
> > > > > + interrupts = <27 0x2>;
> > > > > + spi-max-frequency = <10000000>;
> > > > > + status = "okay";
> > > > > + };
> > > > > +};
> > > > > +
> > > > > +&hdmi {
> > > > > + status = "okay";
> > > > > +};
> > > > > +
> > > > > +/*
> > > > > + * Colibri I2C: I2C3_SDA/SCL on SODIMM 194/196 (e.g. RTC on
> > > > > carrier board)
> > > > > + */
> > > > > +&i2c3 {
> > > > > + status = "okay";
> > > > > +
> > > > > + /* M41T0M6 real time clock on carrier board */
> > > > > + rtc_i2c: rtc@68 {
> > > > > + compatible = "st,m41t0";
> > > > > + reg = <0x68>;
> > > > > + };
> > > > > +};
> > > > > +
> > > > > +&ipu1_di0_disp0 {
> > > > > + remote-endpoint = <&lcd_display_in>;
> > > > > +};
> > > > > +
> > > > > +&pwm1 {
> > > > > + status = "okay";
> > > > > +};
> > > > > +
> > > > > +&pwm2 {
> > > > > + status = "okay";
> > > > > +};
> > > > > +
> > > > > +&pwm3 {
> > > > > + status = "okay";
> > > > > +};
> > > > > +
> > > > > +&pwm4 {
> > > > > + status = "okay";
> > > > > +};
> > > > > +
> > > > > +®_usb_host_vbus {
> > > > > + status = "okay";
> > > > > +};
> > > > > +
> > > > > +&uart1 {
> > > > > + status = "okay";
> > > > > +};
> > > > > +
> > > > > +&uart2 {
> > > > > + status = "okay";
> > > > > +};
> > > > > +
> > > > > +&uart3 {
> > > > > + status = "okay";
> > > > > +};
> > > > > +
> > > > > +&usbh1 {
> > > > > + vbus-supply = <®_usb_host_vbus>;
> > > > > + status = "okay";
> > > > > +};
> > > > > +
> > > > > +&usbotg {
> > > > > + status = "okay";
> > > > > +};
> > > > > +
> > > > > +/* Colibri MMC */
> > > > > +&usdhc1 {
> > > > > + status = "okay";
> > > > > +};
> > > > > +
> > > > > +&weim {
> > > > > + status = "okay";
> > > > > +
> > > > > + /* weim memory map: 32MB on CS0, CS1, CS2 and CS3 */
> > > > > + ranges = <0 0 0x08000000 0x02000000
> > > > > + 1 0 0x0a000000 0x02000000
> > > > > + 2 0 0x0c000000 0x02000000
> > > > > + 3 0 0x0e000000 0x02000000>;
> > > > > +
> > > > > + /* SRAM on Colibri nEXT_CS0 */
> > > > > + sram@0,0 {
> > > > > + compatible = "cypress,cy7c1019dv33-10zsxi, mtd-
> > > > > ram";
> > > > > + reg = <0 0 0x00010000>;
> > > > > + #address-cells = <1>;
> > > > > + #size-cells = <1>;
> > > > > + bank-width = <2>;
> > > > > + fsl,weim-cs-timing = <0x00010081 0x00000000
> > > > > 0x04000000
> > > > > + 0x00000000 0x04000040
> > > > > 0x00000000>;
> > > > > + };
> > > > > +
> > > > > + /* SRAM on Colibri nEXT_CS1 */
> > > > > + sram@1,0 {
> > > > > + compatible = "cypress,cy7c1019dv33-10zsxi, mtd-
> > > > > ram";
> > > > > + reg = <1 0 0x00010000>;
> > > > > + #address-cells = <1>;
> > > > > + #size-cells = <1>;
> > > > > + bank-width = <2>;
> > > > > + fsl,weim-cs-timing = <0x00010081 0x00000000
> > > > > 0x04000000
> > > > > + 0x00000000 0x04000040
> > > > > 0x00000000>;
> > > > > + };
> > > > > +};
> > > > > diff --git a/arch/arm/boot/dts/imx6qdl-colibri-v1.1.dtsi
> > > > > b/arch/arm/boot/dts/imx6qdl-colibri-v1.1.dtsi
> > > > > new file mode 100644
> > > > > index 000000000000..e40819f05c81
> > > > > --- /dev/null
> > > > > +++ b/arch/arm/boot/dts/imx6qdl-colibri-v1.1.dtsi
> > > > > @@ -0,0 +1,852 @@
> > > > > +// SPDX-License-Identifier: GPL-2.0+ OR X11
> > > > > +/*
> > > > > + * Copyright 2019 Toradex AG
> > > > > + */
> > > > > +#include <dt-bindings/gpio/gpio.h>
> > > > > +
> > > > > +/ {
> > > > > + model = "Toradex Colibri iMX6DL/S V1.1 Module";
> > > > > + compatible = "toradex,colibri_imx6dl", "fsl,imx6dl";
> > > > > +
> > > > > + backlight: backlight {
> > > > > + compatible = "pwm-backlight";
> > > > > + pinctrl-names = "default";
> > > > > + pinctrl-0 = <&pinctrl_gpio_bl_on>;
> > > > > + pwms = <&pwm3 0 5000000>;
> > > > > + enable-gpios = <&gpio3 26 GPIO_ACTIVE_HIGH>; /*
> > > > > Colibri BL_ON */
> > > > > + status = "disabled";
> > > > > + };
> > > > > +
> > > > > + reg_module_3v3: regulator-module-3v3 {
> > > > > + compatible = "regulator-fixed";
> > > > > + regulator-name = "+V3.3";
> > > > > + regulator-min-microvolt = <3300000>;
> > > > > + regulator-max-microvolt = <3300000>;
> > > > > + regulator-always-on;
> > > > > + };
> > > > > +
> > > > > + reg_module_3v3_audio: regulator-module-3v3-audio {
> > > > > + compatible = "regulator-fixed";
> > > > > + regulator-name = "+V3.3_AUDIO";
> > > > > + regulator-min-microvolt = <3300000>;
> > > > > + regulator-max-microvolt = <3300000>;
> > > > > + regulator-always-on;
> > > > > + };
> > > > > +
> > > > > + reg_usb_host_vbus: regulator-usb-host-vbus {
> > > > > + compatible = "regulator-fixed";
> > > > > + pinctrl-names = "default";
> > > > > + pinctrl-0 = <&pinctrl_regulator_usbh_pwr>;
> > > > > + regulator-name = "usb_host_vbus";
> > > > > + regulator-min-microvolt = <5000000>;
> > > > > + regulator-max-microvolt = <5000000>;
> > > > > + gpio = <&gpio3 31 GPIO_ACTIVE_HIGH>; /* USBH_PEN
> > > > > */
> > > > > + status = "disabled";
> > > > > + };
> > > > > +
> > > > > + sound {
> > > > > + compatible = "fsl,imx-audio-sgtl5000";
> > > > > + model = "imx6dl-colibri-sgtl5000";
> > > > > + ssi-controller = <&ssi1>;
> > > > > + audio-codec = <&codec>;
> > > > > + audio-routing =
> > > > > + "Headphone Jack", "HP_OUT",
> > > > > + "LINE_IN", "Line In Jack",
> > > > > + "MIC_IN", "Mic Jack",
> > > > > + "Mic Jack", "Mic Bias";
> > > > > + mux-int-port = <1>;
> > > > > + mux-ext-port = <5>;
> > > > > + };
> > > > > +
> > > > > + /* Optional S/PDIF in on SODIMM 88 and out on SODIMM 90,
> > > > > 137 or 168 */
> > > > > + sound_spdif: sound-spdif {
> > > > > + compatible = "fsl,imx-audio-spdif";
> > > > > + model = "imx-spdif";
> > > > > + spdif-controller = <&spdif>;
> > > > > + spdif-in;
> > > > > + spdif-out;
> > > > > + status = "disabled";
> > > > > + };
> > > > > +};
> > > > > +
> > > > > +&audmux {
> > > > > + pinctrl-names = "default";
> > > > > + pinctrl-0 = <&pinctrl_audmux &pinctrl_mic_gnd>;
> > > > > + status = "okay";
> > > > > +};
> > > > > +
> > > > > +/* Optional on SODIMM 55/63 */
> > > > > +&can1 {
> > > > > + pinctrl-names = "default";
> > > > > + pinctrl-0 = <&pinctrl_flexcan1>;
> > > > > + status = "disabled";
> > > > > +};
> > > > > +
> > > > > +/* Optional on SODIMM 178/188 */
> > > > > +&can2 {
> > > > > + pinctrl-names = "default";
> > > > > + pinctrl-0 = <&pinctrl_flexcan2>;
> > > > > + status = "disabled";
> > > > > +};
> > > > > +
> > > > > +/* Colibri SSP */
> > > > > +&ecspi4 {
> > > > > + cs-gpios = <&gpio5 2 GPIO_ACTIVE_HIGH>;
> > > > > + pinctrl-names = "default";
> > > > > + pinctrl-0 = <&pinctrl_ecspi4>;
> > > > > + status = "disabled";
> > > > > +};
> > > > > +
> > > > > +&fec {
> > > > > + pinctrl-names = "default";
> > > > > + pinctrl-0 = <&pinctrl_enet>;
> > > > > + phy-mode = "rmii";
> > > > > + status = "okay";
> > > > > +};
> > > > > +
> > > > > +&hdmi {
> > > > > + pinctrl-names = "default";
> > > > > + pinctrl-0 = <&pinctrl_hdmi_ddc>;
> > > > > + status = "disabled";
> > > > > +};
> > > > > +
> > > > > +/*
> > > > > + * PWR_I2C: power I2C to audio codec, PMIC, temperature sensor
> > > > > and
> > > > > + * touch screen controller
> > > > > + */
> > > > > +&i2c2 {
> > > > > + clock-frequency = <100000>;
> > > > > + pinctrl-names = "default";
> > > > > + pinctrl-0 = <&pinctrl_i2c2>;
> > > > > + status = "okay";
> > > > > +
> > > > > + pmic: pfuze100@8 {
> > > > > + compatible = "fsl,pfuze100";
> > > > > + reg = <0x08>;
> > > > > +
> > > > > + regulators {
> > > > > + sw1a_reg: sw1ab {
> > > > > + regulator-min-microvolt =
> > > > > <300000>;
> > > > > + regulator-max-microvolt =
> > > > > <1875000>;
> > > > > + regulator-boot-on;
> > > > > + regulator-always-on;
> > > > > + regulator-ramp-delay = <6250>;
> > > > > + };
> > > > > +
> > > > > + sw1c_reg: sw1c {
> > > > > + regulator-min-microvolt =
> > > > > <300000>;
> > > > > + regulator-max-microvolt =
> > > > > <1875000>;
> > > > > + regulator-boot-on;
> > > > > + regulator-always-on;
> > > > > + regulator-ramp-delay = <6250>;
> > > > > + };
> > > > > +
> > > > > + sw3a_reg: sw3a {
> > > > > + regulator-min-microvolt =
> > > > > <400000>;
> > > > > + regulator-max-microvolt =
> > > > > <1975000>;
> > > > > + regulator-boot-on;
> > > > > + regulator-always-on;
> > > > > + };
> > > > > +
> > > > > + swbst_reg: swbst {
> > > > > + regulator-min-microvolt =
> > > > > <5000000>;
> > > > > + regulator-max-microvolt =
> > > > > <5150000>;
> > > > > + regulator-boot-on;
> > > > > + regulator-always-on;
> > > > > + };
> > > > > +
> > > > > + snvs_reg: vsnvs {
> > > > > + regulator-min-microvolt =
> > > > > <1000000>;
> > > > > + regulator-max-microvolt =
> > > > > <3000000>;
> > > > > + regulator-boot-on;
> > > > > + regulator-always-on;
> > > > > + };
> > > > > +
> > > > > + vref_reg: vrefddr {
> > > > > + regulator-boot-on;
> > > > > + regulator-always-on;
> > > > > + };
> > > > > +
> > > > > + /* vgen1: unused */
> > > > > +
> > > > > + vgen2_reg: vgen2 {
> > > > > + regulator-min-microvolt =
> > > > > <800000>;
> > > > > + regulator-max-microvolt =
> > > > > <1550000>;
> > > > > + regulator-boot-on;
> > > > > + regulator-always-on;
> > > > > + };
> > > > > +
> > > > > + /*
> > > > > + * +V3.3_1.8_SD1 coming off VGEN3 and
> > > > > supplying
> > > > > + * the i.MX 6 NVCC_SD1.
> > > > > + */
> > > > > + vgen3_reg: vgen3 {
> > > > > + regulator-min-microvolt =
> > > > > <1800000>;
> > > > > + regulator-max-microvolt =
> > > > > <3300000>;
> > > > > + regulator-boot-on;
> > > > > + };
> > > > > +
> > > > > + vgen4_reg: vgen4 {
> > > > > + regulator-min-microvolt =
> > > > > <1800000>;
> > > > > + regulator-max-microvolt =
> > > > > <1800000>;
> > > > > + regulator-boot-on;
> > > > > + regulator-always-on;
> > > > > + };
> > > > > +
> > > > > + vgen5_reg: vgen5 {
> > > > > + regulator-min-microvolt =
> > > > > <1800000>;
> > > > > + regulator-max-microvolt =
> > > > > <3300000>;
> > > > > + regulator-boot-on;
> > > > > + regulator-always-on;
> > > > > + };
> > > > > +
> > > > > + vgen6_reg: vgen6 {
> > > > > + regulator-min-microvolt =
> > > > > <1800000>;
> > > > > + regulator-max-microvolt =
> > > > > <3300000>;
> > > > > + regulator-boot-on;
> > > > > + regulator-always-on;
> > > > > + };
> > > > > + };
> > > > > + };
> > > > > +
> > > > > + codec: sgtl5000@a {
> > > > > + compatible = "fsl,sgtl5000";
> > > > > + reg = <0x0a>;
> > > > > + clocks = <&clks IMX6QDL_CLK_CKO>;
> > > > > + VDDA-supply = <®_module_3v3_audio>;
> > > > > + VDDIO-supply = <®_module_3v3>;
> > > > > + VDDD-supply = <&vgen4_reg>;
> > > > > + lrclk-strength = <3>;
> > > > > + };
> > > > > +
> > > > > + /* STMPE811 touch screen controller */
> > > > > + stmpe811@41 {
> > > > > + compatible = "st,stmpe811";
> > > > > + pinctrl-names = "default";
> > > > > + pinctrl-0 = <&pinctrl_touch_int>;
> > > > > + reg = <0x41>;
> > > > > + interrupts = <20 IRQ_TYPE_LEVEL_LOW>;
> > > > > + interrupt-parent = <&gpio6>;
> > > > > + interrupt-controller;
> > > > > + id = <0>;
> > > > > + blocks = <0x5>;
> > > > > + irq-trigger = <0x1>;
> > > > > + /* 3.25 MHz ADC clock speed */
> > > > > + st,adc-freq = <1>;
> > > > > + /* 12-bit ADC */
> > > > > + st,mod-12b = <1>;
> > > > > + /* internal ADC reference */
> > > > > + st,ref-sel = <0>;
> > > > > + /* ADC conversion time: 80 clocks */
> > > > > + st,sample-time = <4>;
> > > > > +
> > > > > + stmpe_touchscreen {
> > > > > + compatible = "st,stmpe-ts";
> > > > > + /* 8 sample average control */
> > > > > + st,ave-ctrl = <3>;
> > > > > + /* 7 length fractional part in z */
> > > > > + st,fraction-z = <7>;
> > > > > + /*
> > > > > + * 50 mA typical 80 mA max touchscreen
> > > > > drivers
> > > > > + * current limit value
> > > > > + */
> > > > > + st,i-drive = <1>;
> > > > > + /* 1 ms panel driver settling time */
> > > > > + st,settling = <3>;
> > > > > + /* 5 ms touch detect interrupt delay */
> > > > > + st,touch-det-delay = <5>;
> > > > > + };
> > > > > +
> > > > > + stmpe_adc {
> > > > > + compatible = "st,stmpe-adc";
> > > > > + /* forbid to use ADC channels 3-0 (touch)
> > > > > */
> > > > > + st,norequest-mask = <0x0F>;
> > > > > + };
> > > > > + };
> > > > > +};
> > > > > +
> > > > > +/*
> > > > > + * I2C3_SDA/SCL on SODIMM 194/196 (e.g. RTC on carrier board)
> > > > > + */
> > > > > +&i2c3 {
> > > > > + clock-frequency = <100000>;
> > > > > + pinctrl-names = "default", "recovery";
> > > > > + pinctrl-0 = <&pinctrl_i2c3>;
> > > > > + pinctrl-1 = <&pinctrl_i2c3_recovery>;
> > > > > + scl-gpios = <&gpio1 3 (GPIO_ACTIVE_HIGH |
> > > > > GPIO_OPEN_DRAIN)>;
> > > > > + sda-gpios = <&gpio1 6 (GPIO_ACTIVE_HIGH |
> > > > > GPIO_OPEN_DRAIN)>;
> > > > > + status = "disabled";
> > > > > +};
> > > > > +
> > > > > +/* Colibri PWM<B> */
> > > > > +&pwm1 {
> > > > > + pinctrl-names = "default";
> > > > > + pinctrl-0 = <&pinctrl_pwm1>;
> > > > > + status = "disabled";
> > > > > +};
> > > > > +
> > > > > +/* Colibri PWM<D> */
> > > > > +&pwm2 {
> > > > > + pinctrl-names = "default";
> > > > > + pinctrl-0 = <&pinctrl_pwm2>;
> > > > > + status = "disabled";
> > > > > +};
> > > > > +
> > > > > +/* Colibri PWM<A> */
> > > > > +&pwm3 {
> > > > > + pinctrl-names = "default";
> > > > > + pinctrl-0 = <&pinctrl_pwm3>;
> > > > > + status = "disabled";
> > > > > +};
> > > > > +
> > > > > +/* Colibri PWM<C> */
> > > > > +&pwm4 {
> > > > > + pinctrl-names = "default";
> > > > > + pinctrl-0 = <&pinctrl_pwm4>;
> > > > > + status = "disabled";
> > > > > +};
> > > > > +
> > > > > +/* Optional S/PDIF out on SODIMM 137 */
> > > > > +&spdif {
> > > > > + pinctrl-names = "default";
> > > > > + pinctrl-0 = <&pinctrl_spdif>;
> > > > > + status = "disabled";
> > > > > +};
> > > > > +
> > > > > +&ssi1 {
> > > > > + status = "okay";
> > > > > +};
> > > > > +
> > > > > +/* Colibri UART_A */
> > > > > +&uart1 {
> > > > > + pinctrl-names = "default";
> > > > > + pinctrl-0 = <&pinctrl_uart1_dte &pinctrl_uart1_ctrl>;
> > > > > + fsl,dte-mode;
> > > > > + uart-has-rtscts;
> > > > > + status = "disabled";
> > > > > +};
> > > > > +
> > > > > +/* Colibri UART_B */
> > > > > +&uart2 {
> > > > > + pinctrl-names = "default";
> > > > > + pinctrl-0 = <&pinctrl_uart2_dte>;
> > > > > + fsl,dte-mode;
> > > > > + uart-has-rtscts;
> > > > > + status = "disabled";
> > > > > +};
> > > > > +
> > > > > +/* Colibri UART_C */
> > > > > +&uart3 {
> > > > > + pinctrl-names = "default";
> > > > > + pinctrl-0 = <&pinctrl_uart3_dte>;
> > > > > + fsl,dte-mode;
> > > > > + status = "disabled";
> > > > > +};
> > > > > +
> > > > > +&usbotg {
> > > > > + pinctrl-names = "default";
> > > > > + disable-over-current;
> > > > > + dr_mode = "peripheral";
> > > > > + status = "disabled";
> > > > > +};
> > > > > +
> > > > > +/* Colibri MMC */
> > > > > +&usdhc1 {
> > > > > + pinctrl-names = "default", "state_100mhz",
> > > > > "state_200mhz";
> > > > > + pinctrl-0 = <&pinctrl_usdhc1 &pinctrl_mmc_cd>;
> > > > > + pinctrl-1 = <&pinctrl_usdhc1_100mhz &pinctrl_mmc_cd>;
> > > > > + pinctrl-2 = <&pinctrl_usdhc1_200mhz &pinctrl_mmc_cd>;
> > > > > + vmmc-supply = <®_module_3v3>;
> > > > > + vqmmc-supply = <&vgen3_reg>;
> > > > > + bus-width = <4>;
> > > > > + cd-gpios = <&gpio2 5 GPIO_ACTIVE_LOW>; /* MMCD */
> > > > > + disable-wp;
> > > > > + enable-sdio-wakeup;
> > > > > + keep-power-in-suspend;
> > > > > + sd-uhs-sdr12;
> > > > > + sd-uhs-sdr25;
> > > > > + sd-uhs-sdr50;
> > > > > + sd-uhs-sdr104;
> > > > > + status = "disabled";
> > > > > +};
> > > > > +
> > > > > +/* eMMC */
> > > > > +&usdhc3 {
> > > > > + pinctrl-names = "default";
> > > > > + pinctrl-0 = <&pinctrl_usdhc3>;
> > > > > + vqmmc-supply = <®_module_3v3>;
> > > > > + bus-width = <8>;
> > > > > + no-1-8-v;
> > > > > + non-removable;
> > > > > + status = "okay";
> > > > > +};
> > > > > +
> > > > > +&weim {
> > > > > + pinctrl-names = "default";
> > > > > + pinctrl-0 = <&pinctrl_weim_sram &pinctrl_weim_cs0
> > > > > + &pinctrl_weim_cs1 &pinctrl_weim_cs2
> > > > > + &pinctrl_weim_rdnwr &pinctrl_weim_npwe>;
> > > > > + #address-cells = <2>;
> > > > > + #size-cells = <1>;
> > > > > + status = "disabled";
> > > > > +};
> > > > > +
> > > > > +&iomuxc {
> > > > > + pinctrl_audmux: audmuxgrp {
> > > > > + fsl,pins = <
> > > > > + MX6QDL_PAD_KEY_COL0__AUD5_TXC 0x130b0
> > > > > + MX6QDL_PAD_KEY_ROW0__AUD5_TXD 0x130b0
> > > > > + MX6QDL_PAD_KEY_COL1__AUD5_TXFS 0x130b0
> > > > > + MX6QDL_PAD_KEY_ROW1__AUD5_RXD 0x130b0
> > > > > + /* SGTL5000 sys_mclk */
> > > > > + MX6QDL_PAD_GPIO_0__CCM_CLKO1 0x000b0
> > > > > + >;
> > > > > + };
> > > > > +
> > > > > + pinctrl_cam_mclk: cammclkgrp {
> > > > > + fsl,pins = <
> > > > > + /* Parallel Camera CAM sys_mclk */
> > > > > + MX6QDL_PAD_NANDF_CS2__CCM_CLKO2 0x00b0
> > > > > + >;
> > > > > + };
> > > > > +
> > > > > + pinctrl_ecspi4: ecspi4grp {
> > > > > + fsl,pins = <
> > > > > + MX6QDL_PAD_EIM_D22__ECSPI4_MISO 0x100b1
> > > > > + MX6QDL_PAD_EIM_D28__ECSPI4_MOSI 0x100b1
> > > > > + MX6QDL_PAD_EIM_D21__ECSPI4_SCLK 0x100b1
> > > > > + /* SPI CS */
> > > > > + MX6QDL_PAD_EIM_A25__GPIO5_IO02 0x000b1
> > > > > + >;
> > > > > + };
> > > > > +
> > > > > + pinctrl_enet: enetgrp {
> > > > > + fsl,pins = <
> > > > > + MX6QDL_PAD_ENET_MDC__ENET_MDC 0
> > > > > x1b0b0
> > > > > + MX6QDL_PAD_ENET_MDIO__ENET_MDIO 0
> > > > > x1b0b0
> > > > > + MX6QDL_PAD_ENET_RXD0__ENET_RX_DATA0 0
> > > > > x1b0b0
> > > > > + MX6QDL_PAD_ENET_RXD1__ENET_RX_DATA1 0
> > > > > x1b0b0
> > > > > + MX6QDL_PAD_ENET_RX_ER__ENET_RX_ER 0
> > > > > x1b0b0
> > > > > + MX6QDL_PAD_ENET_TX_EN__ENET_TX_EN 0
> > > > > x1b0b0
> > > > > + MX6QDL_PAD_ENET_TXD0__ENET_TX_DATA0 0
> > > > > x1b0b0
> > > > > + MX6QDL_PAD_ENET_TXD1__ENET_TX_DATA1 0
> > > > > x1b0b0
> > > > > + MX6QDL_PAD_ENET_CRS_DV__ENET_RX_EN 0
> > > > > x1b0b0
> > > > > + MX6QDL_PAD_GPIO_16__ENET_REF_CLK ((1<
> > > > > <30) | 0x1b0b0)
> > > > > + >;
> > > > > + };
> > > > > +
> > > > > + pinctrl_flexcan1: flexcan1grp {
> > > > > + fsl,pins = <
> > > > > + MX6QDL_PAD_GPIO_7__FLEXCAN1_TX 0
> > > > > x1b0b0
> > > > > + MX6QDL_PAD_GPIO_8__FLEXCAN1_RX 0
> > > > > x1b0b0
> > > > > + >;
> > > > > + };
> > > > > +
> > > > > + pinctrl_flexcan2: flexcan2grp {
> > > > > + fsl,pins = <
> > > > > + MX6QDL_PAD_KEY_COL4__FLEXCAN2_TX 0
> > > > > x1b0b0
> > > > > + MX6QDL_PAD_KEY_ROW4__FLEXCAN2_RX 0
> > > > > x1b0b0
> > > > > + >;
> > > > > + };
> > > > > +
> > > > > + pinctrl_gpio_bl_on: gpioblon {
> > > > > + fsl,pins = <
> > > > > + MX6QDL_PAD_EIM_D26__GPIO3_IO26 0
> > > > > x1b0b0
> > > > > + >;
> > > > > + };
> > > > > +
> > > > > + pinctrl_gpio_keys: gpiokeys {
> > > > > + fsl,pins = <
> > > > > + MX6QDL_PAD_EIM_A16__GPIO2_IO22 0
> > > > > x130b0
> > > > > + >;
> > > > > + };
> > > > > +
> > > > > + pinctrl_hdmi_ddc: hdmiddcgrp {
> > > > > + fsl,pins = <
> > > > > + MX6QDL_PAD_KEY_COL3__HDMI_TX_DDC_SCL
> > > > > 0x4001b8b1
> > > > > + MX6QDL_PAD_KEY_ROW3__HDMI_TX_DDC_SDA
> > > > > 0x4001b8b1
> > > > > + >;
> > > > > + };
> > > > > +
> > > > > + pinctrl_i2c2: i2c2grp {
> > > > > + fsl,pins = <
> > > > > + MX6QDL_PAD_EIM_EB2__I2C2_SCL 0x4001b8b1
> > > > > + MX6QDL_PAD_EIM_D16__I2C2_SDA 0x4001b8b1
> > > > > + >;
> > > > > + };
> > > > > +
> > > > > + pinctrl_i2c3: i2c3grp {
> > > > > + fsl,pins = <
> > > > > + MX6QDL_PAD_GPIO_3__I2C3_SCL 0x4001b8b1
> > > > > + MX6QDL_PAD_GPIO_6__I2C3_SDA 0x4001b8b1
> > > > > + >;
> > > > > + };
> > > > > +
> > > > > + pinctrl_i2c3_recovery: i2c3recoverygrp {
> > > > > + fsl,pins = <
> > > > > + MX6QDL_PAD_GPIO_3__GPIO1_IO03 0x4001b8b1
> > > > > + MX6QDL_PAD_GPIO_6__GPIO1_IO06 0x4001b8b1
> > > > > + >;
> > > > > + };
> > > > > +
> > > > > + pinctrl_ipu1_csi0: ipu1csi0grp { /* Parallel Camera */
> > > > > + fsl,pins = <
> > > > > + MX6QDL_PAD_EIM_A17__IPU1_CSI1_DATA12 0
> > > > > xb0b1
> > > > > + MX6QDL_PAD_EIM_A18__IPU1_CSI1_DATA13 0
> > > > > xb0b1
> > > > > + MX6QDL_PAD_EIM_A19__IPU1_CSI1_DATA14 0
> > > > > xb0b1
> > > > > + MX6QDL_PAD_EIM_A20__IPU1_CSI1_DATA15 0
> > > > > xb0b1
> > > > > + MX6QDL_PAD_EIM_A21__IPU1_CSI1_DATA16 0
> > > > > xb0b1
> > > > > + MX6QDL_PAD_EIM_A22__IPU1_CSI1_DATA17 0
> > > > > xb0b1
> > > > > + MX6QDL_PAD_EIM_A23__IPU1_CSI1_DATA18 0
> > > > > xb0b1
> > > > > + MX6QDL_PAD_EIM_A24__IPU1_CSI1_DATA19 0
> > > > > xb0b1
> > > > > + MX6QDL_PAD_EIM_D17__IPU1_CSI1_PIXCLK 0
> > > > > xb0b1
> > > > > + MX6QDL_PAD_EIM_EB3__IPU1_CSI1_HSYNC 0
> > > > > xb0b1
> > > > > + MX6QDL_PAD_EIM_D29__IPU1_CSI1_VSYNC 0
> > > > > xb0b1
> > > > > + /* Disable PWM pins on camera interface
> > > > > */
> > > > > + MX6QDL_PAD_SD4_DAT1__GPIO2_IO09 0
> > > > > x40
> > > > > + MX6QDL_PAD_GPIO_1__GPIO1_IO01 0
> > > > > x40
> > > > > + >;
> > > > > + };
> > > > > +
> > > > > + pinctrl_ipu1_lcdif: ipu1lcdifgrp {
> > > > > + fsl,pins = <
> > > > > + MX6QDL_PAD_DI0_DISP_CLK__IPU1_DI0_DISP_CL
> > > > > K 0xa1
> > > > > + MX6QDL_PAD_DI0_PIN15__IPU1_DI0_PIN15
> > > > > 0xa1
> > > > > + MX6QDL_PAD_DI0_PIN2__IPU1_DI0_PIN02
> > > > > 0xa1
> > > > > + MX6QDL_PAD_DI0_PIN3__IPU1_DI0_PIN03
> > > > > 0xa1
> > > > > + MX6QDL_PAD_DISP0_DAT0__IPU1_DISP0_DATA00
> > > > > 0xa1
> > > > > + MX6QDL_PAD_DISP0_DAT1__IPU1_DISP0_DATA01
> > > > > 0xa1
> > > > > + MX6QDL_PAD_DISP0_DAT2__IPU1_DISP0_DATA02
> > > > > 0xa1
> > > > > + MX6QDL_PAD_DISP0_DAT3__IPU1_DISP0_DATA03
> > > > > 0xa1
> > > > > + MX6QDL_PAD_DISP0_DAT4__IPU1_DISP0_DATA04
> > > > > 0xa1
> > > > > + MX6QDL_PAD_DISP0_DAT5__IPU1_DISP0_DATA05
> > > > > 0xa1
> > > > > + MX6QDL_PAD_DISP0_DAT6__IPU1_DISP0_DATA06
> > > > > 0xa1
> > > > > + MX6QDL_PAD_DISP0_DAT7__IPU1_DISP0_DATA07
> > > > > 0xa1
> > > > > + MX6QDL_PAD_DISP0_DAT8__IPU1_DISP0_DATA08
> > > > > 0xa1
> > > > > + MX6QDL_PAD_DISP0_DAT9__IPU1_DISP0_DATA09
> > > > > 0xa1
> > > > > + MX6QDL_PAD_DISP0_DAT10__IPU1_DISP0_DATA10
> > > > > 0xa1
> > > > > + MX6QDL_PAD_DISP0_DAT11__IPU1_DISP0_DATA11
> > > > > 0xa1
> > > > > + MX6QDL_PAD_DISP0_DAT12__IPU1_DISP0_DATA12
> > > > > 0xa1
> > > > > + MX6QDL_PAD_DISP0_DAT13__IPU1_DISP0_DATA13
> > > > > 0xa1
> > > > > + MX6QDL_PAD_DISP0_DAT14__IPU1_DISP0_DATA14
> > > > > 0xa1
> > > > > + MX6QDL_PAD_DISP0_DAT15__IPU1_DISP0_DATA15
> > > > > 0xa1
> > > > > + MX6QDL_PAD_DISP0_DAT16__IPU1_DISP0_DATA16
> > > > > 0xa1
> > > > > + MX6QDL_PAD_DISP0_DAT17__IPU1_DISP0_DATA17
> > > > > 0xa1
> > > > > + >;
> > > > > + };
> > > > > +
> > > > > + pinctrl_mic_gnd: gpiomicgnd {
> > > > > + fsl,pins = <
> > > > > + /* Controls Mic GND, PU or '1' pull Mic
> > > > > GND to GND */
> > > > > + MX6QDL_PAD_RGMII_TD1__GPIO6_IO21 0x1b0b0
> > > > > + >;
> > > > > + };
> > > > > +
> > > > > + pinctrl_mmc_cd: gpiommccd {
> > > > > + fsl,pins = <
> > > > > + MX6QDL_PAD_NANDF_D5__GPIO2_IO05 0x1b0b1
> > > > > + >;
> > > > > + };
> > > > > +
> > > > > + pinctrl_pwm1: pwm1grp {
> > > > > + fsl,pins = <
> > > > > + MX6QDL_PAD_GPIO_9__PWM1_OUT 0x1b0b1
> > > > > + >;
> > > > > + };
> > > > > +
> > > > > + pinctrl_pwm2: pwm2grp {
> > > > > + fsl,pins = <
> > > > > + MX6QDL_PAD_GPIO_1__PWM2_OUT 0x1b0b1
> > > > > + MX6QDL_PAD_EIM_A21__GPIO2_IO17 0x00040
> > > > > + >;
> > > > > + };
> > > > > +
> > > > > + pinctrl_pwm3: pwm3grp {
> > > > > + fsl,pins = <
> > > > > + MX6QDL_PAD_SD4_DAT1__PWM3_OUT 0x1b0b1
> > > > > + MX6QDL_PAD_EIM_A22__GPIO2_IO16 0x00040
> > > > > + >;
> > > > > + };
> > > > > +
> > > > > + pinctrl_pwm4: pwm4grp {
> > > > > + fsl,pins = <
> > > > > + MX6QDL_PAD_SD4_DAT2__PWM4_OUT 0x1b0b1
> > > > > + >;
> > > > > + };
> > > > > +
> > > > > + pinctrl_regulator_usbh_pwr: gpioregusbhpwrgrp {
> > > > > + fsl,pins = <
> > > > > + /* USBH_EN */
> > > > > + MX6QDL_PAD_EIM_D31__GPIO3_IO31 0x0f058
> > > > > + >;
> > > > > + };
> > > > > +
> > > > > + pinctrl_spdif: spdifgrp {
> > > > > + fsl,pins = <
> > > > > + MX6QDL_PAD_GPIO_17__SPDIF_OUT 0x1b0b0
> > > > > + >;
> > > > > + };
> > > > > +
> > > > > + pinctrl_touch_int: gpiotouchintgrp {
> > > > > + fsl,pins = <
> > > > > + /* STMPE811 interrupt */
> > > > > + MX6QDL_PAD_RGMII_TD0__GPIO6_IO20 0x1b0b0
> > > > > + >;
> > > > > + };
> > > > > +
> > > > > + pinctrl_uart1_dce: uart1dcegrp {
> > > > > + fsl,pins = <
> > > > > + MX6QDL_PAD_CSI0_DAT10__UART1_TX_DATA
> > > > > 0x1b0b1
> > > > > + MX6QDL_PAD_CSI0_DAT11__UART1_RX_DATA
> > > > > 0x1b0b1
> > > > > + >;
> > > > > + };
> > > > > +
> > > > > + /* DTE mode */
> > > > > + pinctrl_uart1_dte: uart1dtegrp {
> > > > > + fsl,pins = <
> > > > > + MX6QDL_PAD_CSI0_DAT10__UART1_RX_DATA
> > > > > 0x1b0b1
> > > > > + MX6QDL_PAD_CSI0_DAT11__UART1_TX_DATA
> > > > > 0x1b0b1
> > > > > + MX6QDL_PAD_EIM_D19__UART1_RTS_B 0x1b0b1
> > > > > + MX6QDL_PAD_EIM_D20__UART1_CTS_B 0x1b0b1
> > > > > + >;
> > > > > + };
> > > > > +
> > > > > + /* Additional DTR, DSR, DCD */
> > > > > + pinctrl_uart1_ctrl: uart1ctrlgrp {
> > > > > + fsl,pins = <
> > > > > + MX6QDL_PAD_EIM_D23__UART1_DCD_B 0x1b0b0
> > > > > + MX6QDL_PAD_EIM_D24__UART1_DTR_B 0x1b0b0
> > > > > + MX6QDL_PAD_EIM_D25__UART1_DSR_B 0x1b0b0
> > > > > + >;
> > > > > + };
> > > > > +
> > > > > + pinctrl_uart2_dte: uart2dtegrp {
> > > > > + fsl,pins = <
> > > > > + MX6QDL_PAD_SD4_DAT4__UART2_TX_DATA 0
> > > > > x1b0b1
> > > > > + MX6QDL_PAD_SD4_DAT7__UART2_RX_DATA 0
> > > > > x1b0b1
> > > > > + MX6QDL_PAD_SD4_DAT6__UART2_RTS_B 0
> > > > > x1b0b1
> > > > > + MX6QDL_PAD_SD4_DAT5__UART2_CTS_B 0
> > > > > x1b0b1
> > > > > + >;
> > > > > + };
> > > > > +
> > > > > + pinctrl_uart3_dte: uart3dtegrp {
> > > > > + fsl,pins = <
> > > > > + MX6QDL_PAD_SD4_CLK__UART3_TX_DATA 0
> > > > > x1b0b1
> > > > > + MX6QDL_PAD_SD4_CMD__UART3_RX_DATA 0
> > > > > x1b0b1
> > > > > + >;
> > > > > + };
> > > > > +
> > > > > + pinctrl_usbc_det: usbcdetgrp {
> > > > > + fsl,pins = <
> > > > > + /* USBC_DET */
> > > > > + MX6QDL_PAD_GPIO_17__GPIO7_IO12 0
> > > > > x1b0b0
> > > > > + /* USBC_DET_EN */
> > > > > + MX6QDL_PAD_RGMII_TX_CTL__GPIO6_IO26 0
> > > > > x0f058
> > > > > + /* USBC_DET_OVERWRITE */
> > > > > + MX6QDL_PAD_RGMII_RXC__GPIO6_IO30 0
> > > > > x0f058
> > > > > + >;
> > > > > + };
> > > > > +
> > > > > + pinctrl_usdhc1: usdhc1grp {
> > > > > + fsl,pins = <
> > > > > + MX6QDL_PAD_SD1_CMD__SD1_CMD 0x17071
> > > > > + MX6QDL_PAD_SD1_CLK__SD1_CLK 0x10071
> > > > > + MX6QDL_PAD_SD1_DAT0__SD1_DATA0 0x17071
> > > > > + MX6QDL_PAD_SD1_DAT1__SD1_DATA1 0x17071
> > > > > + MX6QDL_PAD_SD1_DAT2__SD1_DATA2 0x17071
> > > > > + MX6QDL_PAD_SD1_DAT3__SD1_DATA3 0x17071
> > > > > + >;
> > > > > + };
> > > > > +
> > > > > + pinctrl_usdhc1_100mhz: usdhc1grp100mhz {
> > > > > + fsl,pins = <
> > > > > + MX6QDL_PAD_SD1_CMD__SD1_CMD 0x170b1
> > > > > + MX6QDL_PAD_SD1_CLK__SD1_CLK 0x100b1
> > > > > + MX6QDL_PAD_SD1_DAT0__SD1_DATA0 0x170b1
> > > > > + MX6QDL_PAD_SD1_DAT1__SD1_DATA1 0x170b1
> > > > > + MX6QDL_PAD_SD1_DAT2__SD1_DATA2 0x170b1
> > > > > + MX6QDL_PAD_SD1_DAT3__SD1_DATA3 0x170b1
> > > > > + >;
> > > > > + };
> > > > > +
> > > > > + pinctrl_usdhc1_200mhz: usdhc1grp200mhz {
> > > > > + fsl,pins = <
> > > > > + MX6QDL_PAD_SD1_CMD__SD1_CMD 0x170f1
> > > > > + MX6QDL_PAD_SD1_CLK__SD1_CLK 0x100f1
> > > > > + MX6QDL_PAD_SD1_DAT0__SD1_DATA0 0x170f1
> > > > > + MX6QDL_PAD_SD1_DAT1__SD1_DATA1 0x170f1
> > > > > + MX6QDL_PAD_SD1_DAT2__SD1_DATA2 0x170f1
> > > > > + MX6QDL_PAD_SD1_DAT3__SD1_DATA3 0x170f1
> > > > > + >;
> > > > > + };
> > > > > +
> > > > > + pinctrl_usdhc3: usdhc3grp {
> > > > > + fsl,pins = <
> > > > > + MX6QDL_PAD_SD3_CMD__SD3_CMD 0x17059
> > > > > + MX6QDL_PAD_SD3_CLK__SD3_CLK 0x10059
> > > > > + MX6QDL_PAD_SD3_DAT0__SD3_DATA0 0x17059
> > > > > + MX6QDL_PAD_SD3_DAT1__SD3_DATA1 0x17059
> > > > > + MX6QDL_PAD_SD3_DAT2__SD3_DATA2 0x17059
> > > > > + MX6QDL_PAD_SD3_DAT3__SD3_DATA3 0x17059
> > > > > + MX6QDL_PAD_SD3_DAT4__SD3_DATA4 0x17059
> > > > > + MX6QDL_PAD_SD3_DAT5__SD3_DATA5 0x17059
> > > > > + MX6QDL_PAD_SD3_DAT6__SD3_DATA6 0x17059
> > > > > + MX6QDL_PAD_SD3_DAT7__SD3_DATA7 0x17059
> > > > > + /* eMMC reset */
> > > > > + MX6QDL_PAD_SD3_RST__SD3_RESET 0x17059
> > > > > + >;
> > > > > + };
> > > > > +
> > > > > + pinctrl_weim_cs0: weimcs0grp {
> > > > > + fsl,pins = <
> > > > > + /* nEXT_CS0 */
> > > > > + MX6QDL_PAD_EIM_CS0__EIM_CS0_B 0xb0b1
> > > > > + >;
> > > > > + };
> > > > > +
> > > > > + pinctrl_weim_cs1: weimcs1grp {
> > > > > + fsl,pins = <
> > > > > + /* nEXT_CS1 */
> > > > > + MX6QDL_PAD_EIM_CS1__EIM_CS1_B 0xb0b1
> > > > > + >;
> > > > > + };
> > > > > +
> > > > > + pinctrl_weim_cs2: weimcs2grp {
> > > > > + fsl,pins = <
> > > > > + /* nEXT_CS2 */
> > > > > + MX6QDL_PAD_SD2_DAT1__EIM_CS2_B 0xb0b1
> > > > > + >;
> > > > > + };
> > > > > +
> > > > > + pinctrl_weim_sram: weimsramgrp {
> > > > > + fsl,pins = <
> > > > > + MX6QDL_PAD_EIM_OE__EIM_OE_B 0
> > > > > xb0b1
> > > > > + MX6QDL_PAD_EIM_RW__EIM_RW 0
> > > > > xb0b1
> > > > > + /* Data */
> > > > > + MX6QDL_PAD_CSI0_DATA_EN__EIM_DATA00 0
> > > > > x1b0b0
> > > > > + MX6QDL_PAD_CSI0_VSYNC__EIM_DATA01 0
> > > > > x1b0b0
> > > > > + MX6QDL_PAD_CSI0_DAT4__EIM_DATA02 0
> > > > > x1b0b0
> > > > > + MX6QDL_PAD_CSI0_DAT5__EIM_DATA03 0
> > > > > x1b0b0
> > > > > + MX6QDL_PAD_CSI0_DAT6__EIM_DATA04 0
> > > > > x1b0b0
> > > > > + MX6QDL_PAD_CSI0_DAT7__EIM_DATA05 0
> > > > > x1b0b0
> > > > > + MX6QDL_PAD_CSI0_DAT8__EIM_DATA06 0
> > > > > x1b0b0
> > > > > + MX6QDL_PAD_CSI0_DAT9__EIM_DATA07 0
> > > > > x1b0b0
> > > > > + MX6QDL_PAD_CSI0_DAT12__EIM_DATA08 0
> > > > > x1b0b0
> > > > > + MX6QDL_PAD_CSI0_DAT13__EIM_DATA09 0
> > > > > x1b0b0
> > > > > + MX6QDL_PAD_CSI0_DAT14__EIM_DATA10 0
> > > > > x1b0b0
> > > > > + MX6QDL_PAD_CSI0_DAT15__EIM_DATA11 0
> > > > > x1b0b0
> > > > > + MX6QDL_PAD_CSI0_DAT16__EIM_DATA12 0
> > > > > x1b0b0
> > > > > + MX6QDL_PAD_CSI0_DAT17__EIM_DATA13 0
> > > > > x1b0b0
> > > > > + MX6QDL_PAD_CSI0_DAT18__EIM_DATA14 0
> > > > > x1b0b0
> > > > > + MX6QDL_PAD_CSI0_DAT19__EIM_DATA15 0
> > > > > x1b0b0
> > > > > + /* Address */
> > > > > + MX6QDL_PAD_EIM_DA15__EIM_AD15 0
> > > > > xb0b1
> > > > > + MX6QDL_PAD_EIM_DA14__EIM_AD14 0
> > > > > xb0b1
> > > > > + MX6QDL_PAD_EIM_DA13__EIM_AD13 0
> > > > > xb0b1
> > > > > + MX6QDL_PAD_EIM_DA12__EIM_AD12 0
> > > > > xb0b1
> > > > > + MX6QDL_PAD_EIM_DA11__EIM_AD11 0
> > > > > xb0b1
> > > > > + MX6QDL_PAD_EIM_DA10__EIM_AD10 0
> > > > > xb0b1
> > > > > + MX6QDL_PAD_EIM_DA9__EIM_AD09 0
> > > > > xb0b1
> > > > > + MX6QDL_PAD_EIM_DA8__EIM_AD08 0
> > > > > xb0b1
> > > > > + MX6QDL_PAD_EIM_DA7__EIM_AD07 0
> > > > > xb0b1
> > > > > + MX6QDL_PAD_EIM_DA6__EIM_AD06 0
> > > > > xb0b1
> > > > > + MX6QDL_PAD_EIM_DA5__EIM_AD05 0
> > > > > xb0b1
> > > > > + MX6QDL_PAD_EIM_DA4__EIM_AD04 0
> > > > > xb0b1
> > > > > + MX6QDL_PAD_EIM_DA3__EIM_AD03 0
> > > > > xb0b1
> > > > > + MX6QDL_PAD_EIM_DA2__EIM_AD02 0
> > > > > xb0b1
> > > > > + MX6QDL_PAD_EIM_DA1__EIM_AD01 0
> > > > > xb0b1
> > > > > + MX6QDL_PAD_EIM_DA0__EIM_AD00 0
> > > > > xb0b1
> > > > > + >;
> > > > > + };
> > > > > +
> > > > > + pinctrl_weim_rdnwr: weimrdnwr {
> > > > > + fsl,pins = <
> > > > > + MX6QDL_PAD_SD2_CLK__GPIO1_IO10 0
> > > > > x0040
> > > > > + MX6QDL_PAD_RGMII_TD3__GPIO6_IO23 0
> > > > > x130b0
> > > > > + >;
> > > > > + };
> > > > > +
> > > > > + pinctrl_weim_npwe: weimnpwe {
> > > > > + fsl,pins = <
> > > > > + MX6QDL_PAD_SD2_DAT3__GPIO1_IO12 0
> > > > > x0040
> > > > > + MX6QDL_PAD_RGMII_TD2__GPIO6_IO22 0
> > > > > x130b0
> > > > > + >;
> > > > > + };
> > > > > +
> > > > > + /* ADDRESS[16:18] [25] used as GPIO */
> > > > > + pinctrl_weim_gpio_1: weimgpio-1 {
> > > > > + fsl,pins = <
> > > > > + MX6QDL_PAD_KEY_ROW4__GPIO4_IO15 0
> > > > > x1b0b0
> > > > > + MX6QDL_PAD_KEY_ROW2__GPIO4_IO11 0
> > > > > x1b0b0
> > > > > + MX6QDL_PAD_KEY_COL2__GPIO4_IO10 0
> > > > > x1b0b0
> > > > > + MX6QDL_PAD_DISP0_DAT23__GPIO5_IO17 0
> > > > > x1b0b0
> > > > > + MX6QDL_PAD_DISP0_DAT22__GPIO5_IO16 0
> > > > > x1b0b0
> > > > > + MX6QDL_PAD_DISP0_DAT21__GPIO5_IO15 0
> > > > > x1b0b0
> > > > > + MX6QDL_PAD_DISP0_DAT20__GPIO5_IO14 0
> > > > > x1b0b0
> > > > > + MX6QDL_PAD_DISP0_DAT19__GPIO5_IO13 0
> > > > > x1b0b0
> > > > > + MX6QDL_PAD_DISP0_DAT18__GPIO5_IO12 0
> > > > > x1b0b0
> > > > > + MX6QDL_PAD_NANDF_D1__GPIO2_IO01 0
> > > > > x1b0b0
> > > > > + >;
> > > > > + };
> > > > > +
> > > > > + /* ADDRESS[19:24] used as GPIO */
> > > > > + pinctrl_weim_gpio_2: weimgpio-2 {
> > > > > + fsl,pins = <
> > > > > + MX6QDL_PAD_KEY_ROW2__GPIO4_IO11 0
> > > > > x1b0b0
> > > > > + MX6QDL_PAD_KEY_COL2__GPIO4_IO10 0
> > > > > x1b0b0
> > > > > + MX6QDL_PAD_DISP0_DAT23__GPIO5_IO17 0
> > > > > x1b0b0
> > > > > + MX6QDL_PAD_DISP0_DAT22__GPIO5_IO16 0
> > > > > x1b0b0
> > > > > + MX6QDL_PAD_DISP0_DAT21__GPIO5_IO15 0
> > > > > x1b0b0
> > > > > + MX6QDL_PAD_DISP0_DAT20__GPIO5_IO14 0
> > > > > x1b0b0
> > > > > + MX6QDL_PAD_DISP0_DAT19__GPIO5_IO13 0
> > > > > x1b0b0
> > > > > + MX6QDL_PAD_DISP0_DAT18__GPIO5_IO12 0
> > > > > x1b0b0
> > > > > + MX6QDL_PAD_NANDF_D1__GPIO2_IO01 0
> > > > > x1b0b0
> > > > > + >;
> > > > > + };
> > > > > +
> > > > > + /* DATA[16:31] used as GPIO */
> > > > > + pinctrl_weim_gpio_3: weimgpio-3 {
> > > > > + fsl,pins = <
> > > > > + MX6QDL_PAD_EIM_LBA__GPIO2_IO27 0
> > > > > x1b0b0
> > > > > + MX6QDL_PAD_EIM_BCLK__GPIO6_IO31 0
> > > > > x1b0b0
> > > > > + MX6QDL_PAD_NANDF_CS3__GPIO6_IO16 0
> > > > > x1b0b0
> > > > > + MX6QDL_PAD_NANDF_CS1__GPIO6_IO14 0
> > > > > x1b0b0
> > > > > + MX6QDL_PAD_NANDF_RB0__GPIO6_IO10 0
> > > > > x1b0b0
> > > > > + MX6QDL_PAD_NANDF_ALE__GPIO6_IO08 0
> > > > > x1b0b0
> > > > > + MX6QDL_PAD_NANDF_WP_B__GPIO6_IO09 0
> > > > > x1b0b0
> > > > > + MX6QDL_PAD_NANDF_CS0__GPIO6_IO11 0
> > > > > x1b0b0
> > > > > + MX6QDL_PAD_NANDF_CLE__GPIO6_IO07 0
> > > > > x1b0b0
> > > > > + MX6QDL_PAD_GPIO_19__GPIO4_IO05 0
> > > > > x1b0b0
> > > > > + MX6QDL_PAD_CSI0_MCLK__GPIO5_IO19 0
> > > > > x1b0b0
> > > > > + MX6QDL_PAD_CSI0_PIXCLK__GPIO5_IO18 0
> > > > > x1b0b0
> > > > > + MX6QDL_PAD_GPIO_4__GPIO1_IO04 0
> > > > > x1b0b0
> > > > > + MX6QDL_PAD_GPIO_5__GPIO1_IO05 0
> > > > > x1b0b0
> > > > > + MX6QDL_PAD_GPIO_2__GPIO1_IO02 0
> > > > > x1b0b0
> > > > > + >;
> > > > > + };
> > > > > +
> > > > > + /* DQM[0:3] used as GPIO */
> > > > > + pinctrl_weim_gpio_4: weimgpio-4 {
> > > > > + fsl,pins = <
> > > > > + MX6QDL_PAD_EIM_EB0__GPIO2_IO28 0
> > > > > x1b0b0
> > > > > + MX6QDL_PAD_EIM_EB1__GPIO2_IO29 0
> > > > > x1b0b0
> > > > > + MX6QDL_PAD_SD2_DAT2__GPIO1_IO13 0
> > > > > x1b0b0
> > > > > + MX6QDL_PAD_NANDF_D0__GPIO2_IO00 0
> > > > > x1b0b0
> > > > > + >;
> > > > > + };
> > > > > +
> > > > > + /* RDY used as GPIO */
> > > > > + pinctrl_weim_gpio_5: weimgpio-5 {
> > > > > + fsl,pins = <
> > > > > + MX6QDL_PAD_EIM_WAIT__GPIO5_IO00 0
> > > > > x1b0b0
> > > > > + >;
> > > > > + };
> > > > > +
> > > > > + /* ADDRESS[16] DATA[30] used as GPIO */
> > > > > + pinctrl_weim_gpio_6: weimgpio-6 {
> > > > > + fsl,pins = <
> > > > > + MX6QDL_PAD_KEY_ROW4__GPIO4_IO15 0
> > > > > x1b0b0
> > > > > + MX6QDL_PAD_KEY_COL4__GPIO4_IO14 0
> > > > > x1b0b0
> > > > > + >;
> > > > > + };
> > > > > +};
> > > > > --
> > > > > 2.17.1
> > > > >
> > > > >
> > > > >
> > > >
> > > > --
> > > > Pengutronix
> > > > e.K. | |
> > > > Industrial Linux Solutions |
> > > > http://www.pengutronix.de/ |
> > > > Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-
> > > > 206917-0 |
> > > > Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-
> > > > 206917-5555 |
> > >
> > > Thanks for looking into this!
> > >
> > > [1] https://patchwork.kernel.org/patch/10885309/
> > > [2] https://developer.toradex.com/device-tree-customization
> > >
> > > --
> > > Best regards - Freundliche Grüsse - Meilleures salutations
> > >
> > > Senior Development Engineer,
> > > Igor Opaniuk
> > >
> > > Toradex AG
> > > Altsagenstrasse 5 | 6048 Horw/Luzern | Switzerland | T: +41 41 500
> > > 48
> > > 00 (main line)
> > > _______________________________________________
> > > linux-arm-kernel mailing list
> > > linux-arm-kernel@lists.infradead.org
> > > http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
--
Pengutronix e.K. | |
Industrial Linux Solutions | http://www.pengutronix.de/ |
Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 |
Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |
^ permalink raw reply
* [PATCH 3/3] arm64: dts: imx8mm: Add opp-suspend property to OPP table
From: Anson.Huang @ 2019-07-09 7:10 UTC (permalink / raw)
To: robh+dt, mark.rutland, shawnguo, s.hauer, kernel, festevam,
vireshk, nm, sboyd, leonard.crestez, aisheng.dong, daniel.baluta,
ping.bai, l.stach, abel.vesa, ccaione, angus, andrew.smirnov, agx,
devicetree, linux-arm-kernel, linux-kernel, linux-pm
Cc: Linux-imx
In-Reply-To: <20190709071056.26361-1-Anson.Huang@nxp.com>
From: Anson Huang <Anson.Huang@nxp.com>
Add opp-suspend property to each OPP, the of opp core will
select the OPP HW supported and with highest rate to be
suspend opp, it will speed up the suspend/resume process.
Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
---
arch/arm64/boot/dts/freescale/imx8mm.dtsi | 3 +++
1 file changed, 3 insertions(+)
diff --git a/arch/arm64/boot/dts/freescale/imx8mm.dtsi b/arch/arm64/boot/dts/freescale/imx8mm.dtsi
index 398318b..973f457 100644
--- a/arch/arm64/boot/dts/freescale/imx8mm.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mm.dtsi
@@ -108,6 +108,7 @@
opp-microvolt = <850000>;
opp-supported-hw = <0xe>, <0x7>;
clock-latency-ns = <150000>;
+ opp-suspend;
};
opp-1600000000 {
@@ -115,6 +116,7 @@
opp-microvolt = <900000>;
opp-supported-hw = <0xc>, <0x7>;
clock-latency-ns = <150000>;
+ opp-suspend;
};
opp-1800000000 {
@@ -122,6 +124,7 @@
opp-microvolt = <1000000>;
opp-supported-hw = <0x8>, <0x3>;
clock-latency-ns = <150000>;
+ opp-suspend;
};
};
--
2.7.4
^ permalink raw reply related
* [PATCH 2/3] arm64: dts: imx8mq: Add opp-suspend property to OPP table
From: Anson.Huang @ 2019-07-09 7:10 UTC (permalink / raw)
To: robh+dt, mark.rutland, shawnguo, s.hauer, kernel, festevam,
vireshk, nm, sboyd, leonard.crestez, aisheng.dong, daniel.baluta,
ping.bai, l.stach, abel.vesa, ccaione, angus, andrew.smirnov, agx,
devicetree, linux-arm-kernel, linux-kernel, linux-pm
Cc: Linux-imx
In-Reply-To: <20190709071056.26361-1-Anson.Huang@nxp.com>
From: Anson Huang <Anson.Huang@nxp.com>
Add opp-suspend property to each OPP, the of opp core will
select the OPP HW supported and with highest rate to be
suspend opp, it will speed up the suspend/resume process.
Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
---
arch/arm64/boot/dts/freescale/imx8mq.dtsi | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/arch/arm64/boot/dts/freescale/imx8mq.dtsi b/arch/arm64/boot/dts/freescale/imx8mq.dtsi
index 58f66cb..4ba6a25f 100644
--- a/arch/arm64/boot/dts/freescale/imx8mq.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mq.dtsi
@@ -156,6 +156,7 @@
/* Industrial only */
opp-supported-hw = <0xf>, <0x4>;
clock-latency-ns = <150000>;
+ opp-suspend;
};
opp-1000000000 {
@@ -164,6 +165,7 @@
/* Consumer only */
opp-supported-hw = <0xe>, <0x3>;
clock-latency-ns = <150000>;
+ opp-suspend;
};
opp-1300000000 {
@@ -171,6 +173,7 @@
opp-microvolt = <1000000>;
opp-supported-hw = <0xc>, <0x4>;
clock-latency-ns = <150000>;
+ opp-suspend;
};
opp-1500000000 {
@@ -178,6 +181,7 @@
opp-microvolt = <1000000>;
opp-supported-hw = <0x8>, <0x3>;
clock-latency-ns = <150000>;
+ opp-suspend;
};
};
--
2.7.4
^ permalink raw reply related
* [PATCH 1/3] opp: of: Support multiple suspend OPPs defined in DT
From: Anson.Huang @ 2019-07-09 7:10 UTC (permalink / raw)
To: robh+dt, mark.rutland, shawnguo, s.hauer, kernel, festevam,
vireshk, nm, sboyd, leonard.crestez, aisheng.dong, daniel.baluta,
ping.bai, l.stach, abel.vesa, ccaione, angus, andrew.smirnov, agx,
devicetree, linux-arm-kernel, linux-kernel, linux-pm
Cc: Linux-imx
From: Anson Huang <Anson.Huang@nxp.com>
With property "opp-supported-hw" introduced, the OPP table
in DT could be a large OPP table and ONLY a subset of OPPs
are available, based on the version of the hardware running
on. That introduces restriction of using "opp-suspend"
property to define the suspend OPP, as we are NOT sure if the
OPP containing "opp-suspend" property is available for the
hardware running on, and the of opp core does NOT allow multiple
suspend OPPs defined in DT OPP table.
To eliminate this restrition, make of opp core allow multiple
suspend OPPs defined in DT, and pick the OPP with highest rate
and with "opp-suspend" property present to be suspend OPP, it
can speed up the suspend/resume process.
Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
---
drivers/opp/of.c | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)
diff --git a/drivers/opp/of.c b/drivers/opp/of.c
index b313aca..7e8ec6c 100644
--- a/drivers/opp/of.c
+++ b/drivers/opp/of.c
@@ -617,9 +617,12 @@ static struct dev_pm_opp *_opp_add_static_v2(struct opp_table *opp_table,
/* OPP to select on device suspend */
if (of_property_read_bool(np, "opp-suspend")) {
if (opp_table->suspend_opp) {
- dev_warn(dev, "%s: Multiple suspend OPPs found (%lu %lu)\n",
- __func__, opp_table->suspend_opp->rate,
- new_opp->rate);
+ /* Pick the OPP with higher rate as suspend OPP */
+ if (new_opp->rate > opp_table->suspend_opp->rate) {
+ opp_table->suspend_opp->suspend = false;
+ new_opp->suspend = true;
+ opp_table->suspend_opp = new_opp;
+ }
} else {
new_opp->suspend = true;
opp_table->suspend_opp = new_opp;
--
2.7.4
^ permalink raw reply related
* RE: [PATCH v9 5/6] usb:cdns3 Add Cadence USB3 DRD Driver
From: Pawel Laszczak @ 2019-07-09 7:07 UTC (permalink / raw)
To: Felipe Balbi, devicetree@vger.kernel.org
Cc: gregkh@linuxfoundation.org, linux-usb@vger.kernel.org,
hdegoede@redhat.com, heikki.krogerus@linux.intel.com,
robh+dt@kernel.org, rogerq@ti.com, linux-kernel@vger.kernel.org,
jbergsagel@ti.com, nsekhar@ti.com, nm@ti.com, Suresh Punnoose,
peter.chen@nxp.com, Jayshri Dajiram Pawar, Rahul Kumar
In-Reply-To: <87pnmj67ee.fsf@linux.intel.com>
>
>Hi,
>
>Pawel Laszczak <pawell@cadence.com> writes:
>>>> IRQF_ONESHOT can be used only in threaded handled.
>>>> "
>>>> * IRQF_ONESHOT - Interrupt is not reenabled after the hardirq handler finished.
>>>> * Used by threaded interrupts which need to keep the
>>>> * irq line disabled until the threaded handler has been run.
>>>> "
>>>
>>>so?
>>
>> I don't understand why If I don't have threaded handler why I need IRQF_ONESHOT.
>> Why interrupt cannot be reenabled after hardirq handler finished ?
>> I do not use threaded handler so this flag seem unnecessary.
>
>Unless this has changed over the years, it was a requirement from IRQ susbystem.
>
> /*
> * Drivers are often written to work w/o knowledge about the
> * underlying irq chip implementation, so a request for a
> * threaded irq without a primary hard irq context handler
> * requires the ONESHOT flag to be set. Some irq chips like
> * MSI based interrupts are per se one shot safe. Check the
> * chip flags, so we can avoid the unmask dance at the end of
> * the threaded handler for those.
> */
> if (desc->irq_data.chip->flags & IRQCHIP_ONESHOT_SAFE)
> new->flags &= ~IRQF_ONESHOT;
>From description I understand that it should be set when driver uses only
threaded handler without hard irq handler.
eg.
ret = devm_request_threaded_irq(dev, data->usb_id_irq,
NULL, int3496_thread_isr,
IRQF_SHARED | IRQF_ONESHOT |
IRQF_TRIGGER_RISING |
IRQF_TRIGGER_FALLING,
dev_name(dev), data);
It make sense, we don't have hard irq handler so we can't clear source of interrupt.
If we clear it immediately in interrupt controller then the same interrupt could
be raised again, because it was not cleared e.g in controller register.
>>>>>> + } else {
>>>>>> + struct usb_request *request;
>>>>>> +
>>>>>> + if (priv_dev->eps[index]->flags & EP_WEDGE) {
>>>>>> + cdns3_select_ep(priv_dev, 0x00);
>>>>>> + return 0;
>>>>>> + }
>>>>>> +
>>>>>> + cdns3_dbg(priv_ep->cdns3_dev, "Clear Stalled endpoint %s\n",
>>>>>> + priv_ep->name);
>>>>>
>>>>>why do you need your own wrapper around dev_dbg()? This looks quite unnecessary.
>>>>
>>>> It's generic function used for adding message to trace.log. It's not wrapper to dev_dbg
>>>>
>>>> void cdns3_dbg(struct cdns3_device *priv_dev, const char *fmt, ...)
>>>> {
>>>> struct va_format vaf;
>>>> va_list args;
>>>>
>>>> va_start(args, fmt);
>>>> vaf.fmt = fmt;
>>>> vaf.va = &args;
>>>> trace_cdns3_log(priv_dev, &vaf);
>>>> va_end(args);
>>>> }
>>>
>>>oh. Don't do it like that. Add a proper trace event that actually
>>>decodes the information you want. These random messages will give you
>>>trouble in the future. I had this sort of construct in dwc3 for a while
>>>and it became clear that it's a bad idea. It's best to have trace events
>>>that decode information coming from the HW. That way your trace logs
>>>have a "predictable" shape/format and you can easily find problem areas.
>>
>> Ok , I will change this.
>> I used such solution because I didn't want to create to many trace events.
>> I used it only for rely used messages.
>
>If you have these messages that are *really* needed, then you should add
>a trace event for it. Look at the events we have on dwc3 if you need
>some inspiration. Could also look at the history of our trace events to
>figure out how things changed over time.
>
>cheers
>
>--
>balbi
^ permalink raw reply
* RE: [PATCH v9 5/6] usb:cdns3 Add Cadence USB3 DRD Driver
From: Felipe Balbi @ 2019-07-09 6:36 UTC (permalink / raw)
To: Pawel Laszczak, devicetree@vger.kernel.org
Cc: gregkh@linuxfoundation.org, linux-usb@vger.kernel.org,
hdegoede@redhat.com, heikki.krogerus@linux.intel.com,
robh+dt@kernel.org, rogerq@ti.com, linux-kernel@vger.kernel.org,
jbergsagel@ti.com, nsekhar@ti.com, nm@ti.com, Suresh Punnoose,
peter.chen@nxp.com, Jayshri Dajiram Pawar, Rahul Kumar
In-Reply-To: <BYAPR07MB47094B372CEC6DFD25FC78E1DDF10@BYAPR07MB4709.namprd07.prod.outlook.com>
Hi,
Pawel Laszczak <pawell@cadence.com> writes:
>>> IRQF_ONESHOT can be used only in threaded handled.
>>> "
>>> * IRQF_ONESHOT - Interrupt is not reenabled after the hardirq handler finished.
>>> * Used by threaded interrupts which need to keep the
>>> * irq line disabled until the threaded handler has been run.
>>> "
>>
>>so?
>
> I don't understand why If I don't have threaded handler why I need IRQF_ONESHOT.
> Why interrupt cannot be reenabled after hardirq handler finished ?
> I do not use threaded handler so this flag seem unnecessary.
Unless this has changed over the years, it was a requirement from IRQ susbystem.
/*
* Drivers are often written to work w/o knowledge about the
* underlying irq chip implementation, so a request for a
* threaded irq without a primary hard irq context handler
* requires the ONESHOT flag to be set. Some irq chips like
* MSI based interrupts are per se one shot safe. Check the
* chip flags, so we can avoid the unmask dance at the end of
* the threaded handler for those.
*/
if (desc->irq_data.chip->flags & IRQCHIP_ONESHOT_SAFE)
new->flags &= ~IRQF_ONESHOT;
>>>>> + } else {
>>>>> + struct usb_request *request;
>>>>> +
>>>>> + if (priv_dev->eps[index]->flags & EP_WEDGE) {
>>>>> + cdns3_select_ep(priv_dev, 0x00);
>>>>> + return 0;
>>>>> + }
>>>>> +
>>>>> + cdns3_dbg(priv_ep->cdns3_dev, "Clear Stalled endpoint %s\n",
>>>>> + priv_ep->name);
>>>>
>>>>why do you need your own wrapper around dev_dbg()? This looks quite unnecessary.
>>>
>>> It's generic function used for adding message to trace.log. It's not wrapper to dev_dbg
>>>
>>> void cdns3_dbg(struct cdns3_device *priv_dev, const char *fmt, ...)
>>> {
>>> struct va_format vaf;
>>> va_list args;
>>>
>>> va_start(args, fmt);
>>> vaf.fmt = fmt;
>>> vaf.va = &args;
>>> trace_cdns3_log(priv_dev, &vaf);
>>> va_end(args);
>>> }
>>
>>oh. Don't do it like that. Add a proper trace event that actually
>>decodes the information you want. These random messages will give you
>>trouble in the future. I had this sort of construct in dwc3 for a while
>>and it became clear that it's a bad idea. It's best to have trace events
>>that decode information coming from the HW. That way your trace logs
>>have a "predictable" shape/format and you can easily find problem areas.
>
> Ok , I will change this.
> I used such solution because I didn't want to create to many trace events.
> I used it only for rely used messages.
If you have these messages that are *really* needed, then you should add
a trace event for it. Look at the events we have on dwc3 if you need
some inspiration. Could also look at the history of our trace events to
figure out how things changed over time.
cheers
--
balbi
^ permalink raw reply
* [PATCH v7 18/18] MAINTAINERS: add proc sysctl KUnit test to PROC SYSCTL section
From: Brendan Higgins @ 2019-07-09 6:30 UTC (permalink / raw)
To: frowand.list, gregkh, jpoimboe, keescook, kieran.bingham, mcgrof,
peterz, robh, sboyd, shuah, tytso, yamada.masahiro
Cc: devicetree, dri-devel, kunit-dev, linux-doc, linux-fsdevel,
linux-kbuild, linux-kernel, linux-kselftest, linux-nvdimm,
linux-um, Alexander.Levin, Tim.Bird, amir73il, dan.carpenter,
daniel, jdike, joel, julia.lawall, khilman, knut.omang, logang,
mpe, pmladek, rdunlap, richard, rientjes, rostedt, wfg,
Brendan Higgins, Iurii Zaikin
In-Reply-To: <20190709063023.251446-1-brendanhiggins@google.com>
Add entry for the new proc sysctl KUnit test to the PROC SYSCTL section,
and add Iurii as a maintainer.
Signed-off-by: Brendan Higgins <brendanhiggins@google.com>
Cc: Iurii Zaikin <yzaikin@google.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Logan Gunthorpe <logang@deltatee.com>
Acked-by: Luis Chamberlain <mcgrof@kernel.org>
---
MAINTAINERS | 2 ++
1 file changed, 2 insertions(+)
diff --git a/MAINTAINERS b/MAINTAINERS
index 48d04d180a988..f8204c75114da 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -12721,12 +12721,14 @@ F: Documentation/filesystems/proc.txt
PROC SYSCTL
M: Luis Chamberlain <mcgrof@kernel.org>
M: Kees Cook <keescook@chromium.org>
+M: Iurii Zaikin <yzaikin@google.com>
L: linux-kernel@vger.kernel.org
L: linux-fsdevel@vger.kernel.org
S: Maintained
F: fs/proc/proc_sysctl.c
F: include/linux/sysctl.h
F: kernel/sysctl.c
+F: kernel/sysctl-test.c
F: tools/testing/selftests/sysctl/
PS3 NETWORK SUPPORT
--
2.22.0.410.gd8fdbe21b5-goog
^ permalink raw reply related
* [PATCH v7 17/18] kernel/sysctl-test: Add null pointer test for sysctl.c:proc_dointvec()
From: Brendan Higgins @ 2019-07-09 6:30 UTC (permalink / raw)
To: frowand.list, gregkh, jpoimboe, keescook, kieran.bingham, mcgrof,
peterz, robh, sboyd, shuah, tytso, yamada.masahiro
Cc: devicetree, dri-devel, kunit-dev, linux-doc, linux-fsdevel,
linux-kbuild, linux-kernel, linux-kselftest, linux-nvdimm,
linux-um, Alexander.Levin, Tim.Bird, amir73il, dan.carpenter,
daniel, jdike, joel, julia.lawall, khilman, knut.omang, logang,
mpe, pmladek, rdunlap, richard, rientjes, rostedt, wfg,
Iurii Zaikin, Brendan Higgins
In-Reply-To: <20190709063023.251446-1-brendanhiggins@google.com>
From: Iurii Zaikin <yzaikin@google.com>
KUnit tests for initialized data behavior of proc_dointvec that is
explicitly checked in the code. Includes basic parsing tests including
int min/max overflow.
Signed-off-by: Iurii Zaikin <yzaikin@google.com>
Signed-off-by: Brendan Higgins <brendanhiggins@google.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Logan Gunthorpe <logang@deltatee.com>
Acked-by: Luis Chamberlain <mcgrof@kernel.org>
---
kernel/Makefile | 2 +
kernel/sysctl-test.c | 375 +++++++++++++++++++++++++++++++++++++++++++
lib/Kconfig.debug | 11 ++
3 files changed, 388 insertions(+)
create mode 100644 kernel/sysctl-test.c
diff --git a/kernel/Makefile b/kernel/Makefile
index a8d923b5481ba..50fd511cd0ee0 100644
--- a/kernel/Makefile
+++ b/kernel/Makefile
@@ -114,6 +114,8 @@ obj-$(CONFIG_HAS_IOMEM) += iomem.o
obj-$(CONFIG_ZONE_DEVICE) += memremap.o
obj-$(CONFIG_RSEQ) += rseq.o
+obj-$(CONFIG_SYSCTL_KUNIT_TEST) += sysctl-test.o
+
obj-$(CONFIG_GCC_PLUGIN_STACKLEAK) += stackleak.o
KASAN_SANITIZE_stackleak.o := n
KCOV_INSTRUMENT_stackleak.o := n
diff --git a/kernel/sysctl-test.c b/kernel/sysctl-test.c
new file mode 100644
index 0000000000000..fc27b2c1185ca
--- /dev/null
+++ b/kernel/sysctl-test.c
@@ -0,0 +1,375 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * KUnit test of proc sysctl.
+ */
+
+#include <kunit/test.h>
+#include <linux/sysctl.h>
+
+#define KUNIT_PROC_READ 0
+#define KUNIT_PROC_WRITE 1
+
+static int i_zero;
+static int i_one_hundred = 100;
+
+/*
+ * Test that proc_dointvec will not try to use a NULL .data field even when the
+ * length is non-zero.
+ */
+static void sysctl_test_api_dointvec_null_tbl_data(struct kunit *test)
+{
+ struct ctl_table null_data_table = {
+ .procname = "foo",
+ /*
+ * Here we are testing that proc_dointvec behaves correctly when
+ * we give it a NULL .data field. Normally this would point to a
+ * piece of memory where the value would be stored.
+ */
+ .data = NULL,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
+ .extra1 = &i_zero,
+ .extra2 = &i_one_hundred,
+ };
+ void *buffer = kunit_kzalloc(test, sizeof(int), GFP_USER);
+ size_t len;
+ loff_t pos;
+
+ /*
+ * We don't care what the starting length is since proc_dointvec should
+ * not try to read because .data is NULL.
+ */
+ len = 1234;
+ KUNIT_EXPECT_EQ(test, 0, proc_dointvec(&null_data_table,
+ KUNIT_PROC_READ, buffer, &len,
+ &pos));
+ KUNIT_EXPECT_EQ(test, (size_t)0, len);
+
+ /*
+ * See above.
+ */
+ len = 1234;
+ KUNIT_EXPECT_EQ(test, 0, proc_dointvec(&null_data_table,
+ KUNIT_PROC_WRITE, buffer, &len,
+ &pos));
+ KUNIT_EXPECT_EQ(test, (size_t)0, len);
+}
+
+/*
+ * Similar to the previous test, we create a struct ctrl_table that has a .data
+ * field that proc_dointvec cannot do anything with; however, this time it is
+ * because we tell proc_dointvec that the size is 0.
+ */
+static void sysctl_test_api_dointvec_table_maxlen_unset(struct kunit *test)
+{
+ int data = 0;
+ struct ctl_table data_maxlen_unset_table = {
+ .procname = "foo",
+ .data = &data,
+ /*
+ * So .data is no longer NULL, but we tell proc_dointvec its
+ * length is 0, so it still shouldn't try to use it.
+ */
+ .maxlen = 0,
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
+ .extra1 = &i_zero,
+ .extra2 = &i_one_hundred,
+ };
+ void *buffer = kunit_kzalloc(test, sizeof(int), GFP_USER);
+ size_t len;
+ loff_t pos;
+
+ /*
+ * As before, we don't care what buffer length is because proc_dointvec
+ * cannot do anything because its internal .data buffer has zero length.
+ */
+ len = 1234;
+ KUNIT_EXPECT_EQ(test, 0, proc_dointvec(&data_maxlen_unset_table,
+ KUNIT_PROC_READ, buffer, &len,
+ &pos));
+ KUNIT_EXPECT_EQ(test, (size_t)0, len);
+
+ /*
+ * See previous comment.
+ */
+ len = 1234;
+ KUNIT_EXPECT_EQ(test, 0, proc_dointvec(&data_maxlen_unset_table,
+ KUNIT_PROC_WRITE, buffer, &len,
+ &pos));
+ KUNIT_EXPECT_EQ(test, (size_t)0, len);
+}
+
+/*
+ * Here we provide a valid struct ctl_table, but we try to read and write from
+ * it using a buffer of zero length, so it should still fail in a similar way as
+ * before.
+ */
+static void sysctl_test_api_dointvec_table_len_is_zero(struct kunit *test)
+{
+ int data = 0;
+ /* Good table. */
+ struct ctl_table table = {
+ .procname = "foo",
+ .data = &data,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
+ .extra1 = &i_zero,
+ .extra2 = &i_one_hundred,
+ };
+ void *buffer = kunit_kzalloc(test, sizeof(int), GFP_USER);
+ /*
+ * However, now our read/write buffer has zero length.
+ */
+ size_t len = 0;
+ loff_t pos;
+
+ KUNIT_EXPECT_EQ(test, 0, proc_dointvec(&table, KUNIT_PROC_READ, buffer,
+ &len, &pos));
+ KUNIT_EXPECT_EQ(test, (size_t)0, len);
+
+ KUNIT_EXPECT_EQ(test, 0, proc_dointvec(&table, KUNIT_PROC_WRITE, buffer,
+ &len, &pos));
+ KUNIT_EXPECT_EQ(test, (size_t)0, len);
+}
+
+/*
+ * Test that proc_dointvec refuses to read when the file position is non-zero.
+ */
+static void sysctl_test_api_dointvec_table_read_but_position_set(
+ struct kunit *test)
+{
+ int data = 0;
+ /* Good table. */
+ struct ctl_table table = {
+ .procname = "foo",
+ .data = &data,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
+ .extra1 = &i_zero,
+ .extra2 = &i_one_hundred,
+ };
+ void *buffer = kunit_kzalloc(test, sizeof(int), GFP_USER);
+ /*
+ * We don't care about our buffer length because we start off with a
+ * non-zero file position.
+ */
+ size_t len = 1234;
+ /*
+ * proc_dointvec should refuse to read into the buffer since the file
+ * pos is non-zero.
+ */
+ loff_t pos = 1;
+
+ KUNIT_EXPECT_EQ(test, 0, proc_dointvec(&table, KUNIT_PROC_READ, buffer,
+ &len, &pos));
+ KUNIT_EXPECT_EQ(test, (size_t)0, len);
+}
+
+/*
+ * Test that we can read a two digit number in a sufficiently size buffer.
+ * Nothing fancy.
+ */
+static void sysctl_test_dointvec_read_happy_single_positive(struct kunit *test)
+{
+ int data = 0;
+ /* Good table. */
+ struct ctl_table table = {
+ .procname = "foo",
+ .data = &data,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
+ .extra1 = &i_zero,
+ .extra2 = &i_one_hundred,
+ };
+ /* Put something in the buffer for debugging purposes. */
+ char buf[] = "bogus";
+ size_t len = sizeof(buf) - 1;
+ loff_t pos = 0;
+ /* Store 13 in the data field. */
+ *((int *)table.data) = 13;
+
+ KUNIT_EXPECT_EQ(test, 0, proc_dointvec(&table, KUNIT_PROC_READ, buf,
+ &len, &pos));
+ KUNIT_ASSERT_EQ(test, (size_t)3, len);
+ buf[len] = '\0';
+ /* And we read 13 back out. */
+ KUNIT_EXPECT_STREQ(test, "13\n", (char *)buf);
+}
+
+/*
+ * Same as previous test, just now with negative numbers.
+ */
+static void sysctl_test_dointvec_read_happy_single_negative(struct kunit *test)
+{
+ int data = 0;
+ /* Good table. */
+ struct ctl_table table = {
+ .procname = "foo",
+ .data = &data,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
+ .extra1 = &i_zero,
+ .extra2 = &i_one_hundred,
+ };
+ char buf[] = "bogus";
+ size_t len = sizeof(buf) - 1;
+ loff_t pos = 0;
+ *((int *)table.data) = -16;
+
+ KUNIT_EXPECT_EQ(test, 0, proc_dointvec(&table, KUNIT_PROC_READ, buf,
+ &len, &pos));
+ KUNIT_ASSERT_EQ(test, (size_t)4, len);
+ buf[len] = '\0';
+ KUNIT_EXPECT_STREQ(test, "-16\n", (char *)buf);
+}
+
+/*
+ * Test that a simple positive write works.
+ */
+static void sysctl_test_dointvec_write_happy_single_positive(struct kunit *test)
+{
+ int data = 0;
+ /* Good table. */
+ struct ctl_table table = {
+ .procname = "foo",
+ .data = &data,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
+ .extra1 = &i_zero,
+ .extra2 = &i_one_hundred,
+ };
+ char input[] = "9";
+ size_t len = sizeof(input) - 1;
+ loff_t pos = 0;
+
+ KUNIT_EXPECT_EQ(test, 0, proc_dointvec(&table, KUNIT_PROC_WRITE, input,
+ &len, &pos));
+ KUNIT_EXPECT_EQ(test, sizeof(input) - 1, len);
+ KUNIT_EXPECT_EQ(test, sizeof(input) - 1, (size_t)pos);
+ KUNIT_EXPECT_EQ(test, 9, *((int *)table.data));
+}
+
+/*
+ * Same as previous test, but now with negative numbers.
+ */
+static void sysctl_test_dointvec_write_happy_single_negative(struct kunit *test)
+{
+ int data = 0;
+ struct ctl_table table = {
+ .procname = "foo",
+ .data = &data,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
+ .extra1 = &i_zero,
+ .extra2 = &i_one_hundred,
+ };
+ char input[] = "-9";
+ size_t len = sizeof(input) - 1;
+ loff_t pos = 0;
+
+ KUNIT_EXPECT_EQ(test, 0, proc_dointvec(&table, KUNIT_PROC_WRITE, input,
+ &len, &pos));
+ KUNIT_EXPECT_EQ(test, sizeof(input) - 1, len);
+ KUNIT_EXPECT_EQ(test, sizeof(input) - 1, (size_t)pos);
+ KUNIT_EXPECT_EQ(test, -9, *((int *)table.data));
+}
+
+/*
+ * Test that writing a value smaller than the minimum possible value is not
+ * allowed.
+ */
+static void sysctl_test_api_dointvec_write_single_less_int_min(
+ struct kunit *test)
+{
+ int data = 0;
+ struct ctl_table table = {
+ .procname = "foo",
+ .data = &data,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
+ .extra1 = &i_zero,
+ .extra2 = &i_one_hundred,
+ };
+ char input[32];
+ size_t len = sizeof(input) - 1;
+ loff_t pos = 0;
+ unsigned long abs_of_less_than_min = (unsigned long)INT_MAX
+ - (INT_MAX + INT_MIN) + 1;
+
+ /*
+ * We use this rigmarole to create a string that contains a value one
+ * less than the minimum accepted value.
+ */
+ KUNIT_ASSERT_LT(test,
+ (size_t)snprintf(input, sizeof(input), "-%lu",
+ abs_of_less_than_min),
+ sizeof(input));
+
+ KUNIT_EXPECT_EQ(test, -EINVAL,
+ proc_dointvec(&table, KUNIT_PROC_WRITE, input, &len,
+ &pos));
+ KUNIT_EXPECT_EQ(test, sizeof(input) - 1, len);
+ KUNIT_EXPECT_EQ(test, 0, *((int *)table.data));
+}
+
+/*
+ * Test that writing the maximum possible value works.
+ */
+static void sysctl_test_api_dointvec_write_single_greater_int_max(
+ struct kunit *test)
+{
+ int data = 0;
+ struct ctl_table table = {
+ .procname = "foo",
+ .data = &data,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
+ .extra1 = &i_zero,
+ .extra2 = &i_one_hundred,
+ };
+ char input[32];
+ size_t len = sizeof(input) - 1;
+ loff_t pos = 0;
+ unsigned long greater_than_max = (unsigned long)INT_MAX + 1;
+
+ KUNIT_ASSERT_GT(test, greater_than_max, (unsigned long)INT_MAX);
+ KUNIT_ASSERT_LT(test, (size_t)snprintf(input, sizeof(input), "%lu",
+ greater_than_max),
+ sizeof(input));
+ KUNIT_EXPECT_EQ(test, -EINVAL,
+ proc_dointvec(&table, KUNIT_PROC_WRITE, input, &len,
+ &pos));
+ KUNIT_ASSERT_EQ(test, sizeof(input) - 1, len);
+ KUNIT_EXPECT_EQ(test, 0, *((int *)table.data));
+}
+
+static struct kunit_case sysctl_test_cases[] = {
+ KUNIT_CASE(sysctl_test_api_dointvec_null_tbl_data),
+ KUNIT_CASE(sysctl_test_api_dointvec_table_maxlen_unset),
+ KUNIT_CASE(sysctl_test_api_dointvec_table_len_is_zero),
+ KUNIT_CASE(sysctl_test_api_dointvec_table_read_but_position_set),
+ KUNIT_CASE(sysctl_test_dointvec_read_happy_single_positive),
+ KUNIT_CASE(sysctl_test_dointvec_read_happy_single_negative),
+ KUNIT_CASE(sysctl_test_dointvec_write_happy_single_positive),
+ KUNIT_CASE(sysctl_test_dointvec_write_happy_single_negative),
+ KUNIT_CASE(sysctl_test_api_dointvec_write_single_less_int_min),
+ KUNIT_CASE(sysctl_test_api_dointvec_write_single_greater_int_max),
+ {}
+};
+
+static struct kunit_suite sysctl_test_suite = {
+ .name = "sysctl_test",
+ .test_cases = sysctl_test_cases,
+};
+
+kunit_test_suite(sysctl_test_suite);
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index cbdfae3798965..6f8007800a76f 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -1939,6 +1939,17 @@ config TEST_SYSCTL
If unsure, say N.
+config SYSCTL_KUNIT_TEST
+ bool "KUnit test for sysctl"
+ depends on KUNIT
+ help
+ This builds the proc sysctl unit test, which runs on boot.
+ Tests the API contract and implementation correctness of sysctl.
+ For more information on KUnit and unit tests in general please refer
+ to the KUnit documentation in Documentation/dev-tools/kunit/.
+
+ If unsure, say N.
+
config TEST_UDELAY
tristate "udelay test driver"
help
--
2.22.0.410.gd8fdbe21b5-goog
^ permalink raw reply related
* [PATCH v7 16/18] MAINTAINERS: add entry for KUnit the unit testing framework
From: Brendan Higgins @ 2019-07-09 6:30 UTC (permalink / raw)
To: frowand.list, gregkh, jpoimboe, keescook, kieran.bingham, mcgrof,
peterz, robh, sboyd, shuah, tytso, yamada.masahiro
Cc: devicetree, dri-devel, kunit-dev, linux-doc, linux-fsdevel,
linux-kbuild, linux-kernel, linux-kselftest, linux-nvdimm,
linux-um, Alexander.Levin, Tim.Bird, amir73il, dan.carpenter,
daniel, jdike, joel, julia.lawall, khilman, knut.omang, logang,
mpe, pmladek, rdunlap, richard, rientjes, rostedt, wfg,
Brendan Higgins
In-Reply-To: <20190709063023.251446-1-brendanhiggins@google.com>
Add myself as maintainer of KUnit, the Linux kernel's unit testing
framework.
Signed-off-by: Brendan Higgins <brendanhiggins@google.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Logan Gunthorpe <logang@deltatee.com>
---
MAINTAINERS | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/MAINTAINERS b/MAINTAINERS
index 677ef41cb012c..48d04d180a988 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -8599,6 +8599,17 @@ S: Maintained
F: tools/testing/selftests/
F: Documentation/dev-tools/kselftest*
+KERNEL UNIT TESTING FRAMEWORK (KUnit)
+M: Brendan Higgins <brendanhiggins@google.com>
+L: linux-kselftest@vger.kernel.org
+L: kunit-dev@googlegroups.com
+W: https://google.github.io/kunit-docs/third_party/kernel/docs/
+S: Maintained
+F: Documentation/dev-tools/kunit/
+F: include/kunit/
+F: kunit/
+F: tools/testing/kunit/
+
KERNEL USERMODE HELPER
M: Luis Chamberlain <mcgrof@kernel.org>
L: linux-kernel@vger.kernel.org
--
2.22.0.410.gd8fdbe21b5-goog
^ permalink raw reply related
* [PATCH v7 15/18] Documentation: kunit: add documentation for KUnit
From: Brendan Higgins @ 2019-07-09 6:30 UTC (permalink / raw)
To: frowand.list-Re5JQEeQqe8AvxtiuMwx3w,
gregkh-hQyY1W1yCW8ekmWlsbkhG0B+6BGkLq7r,
jpoimboe-H+wXaHxf7aLQT0dZR+AlfA, keescook-hpIqsD4AKlfQT0dZR+AlfA,
kieran.bingham-ryLnwIuWjnjg/C1BVhZhaw,
mcgrof-DgEjT+Ai2ygdnm+yROfE0A, peterz-wEGCiKHe2LqWVfeAwA7xHQ,
robh-DgEjT+Ai2ygdnm+yROfE0A, sboyd-DgEjT+Ai2ygdnm+yROfE0A,
shuah-DgEjT+Ai2ygdnm+yROfE0A, tytso-3s7WtUTddSA,
yamada.masahiro-uWyLwvC0a2jby3iVrkZq2A
Cc: pmladek-IBi9RG/b67k, linux-doc-u79uwXL29TY76Z2rM5mHXA,
amir73il-Re5JQEeQqe8AvxtiuMwx3w, Brendan Higgins,
dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW,
Alexander.Levin-0li6OtcxBFHby3iVrkZq2A,
linux-kselftest-u79uwXL29TY76Z2rM5mHXA, Jonathan Corbet,
linux-nvdimm-hn68Rpc1hR1g9hUCZPvPmw,
khilman-rdvid1DuHRBWk0Htik3J/w, knut.omang-QHcLZuEGTsvQT0dZR+AlfA,
Felix Guo, wfg-VuQAYsv1563Yd54FQh9/CA,
joel-U3u1mxZcP9KHXe+LvDLADg, rientjes-hpIqsD4AKlfQT0dZR+AlfA,
jdike-OPE4K8JWMJJBDgjK7y7TUQ,
dan.carpenter-QHcLZuEGTsvQT0dZR+AlfA,
devicetree-u79uwXL29TY76Z2rM5mHXA,
linux-kbuild-u79uwXL29TY76Z2rM5mHXA, Tim.Bird-7U/KSKJipcs,
linux-um-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
rostedt-nx8X9YLhiw1AfugRpC6u6w, julia.lawall-L2FTfq7BK8M,
kunit-dev-/JYPxA39Uh5TLH3MbocFFw, richard-/L3Ra7n9ekc,
rdunlap-wEGCiKHe2LqWVfeAwA7xHQ,
linux-kernel-u79uwXL29TY76Z2rM5mHXA, daniel-/w4YWyX8dFk,
mpe-Gsx/Oe8HsFggBc27wqDAHg, linux-fsdevel-u79uwXL29TY76Z2rM5mHXA
In-Reply-To: <20190709063023.251446-1-brendanhiggins-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>
Add documentation for KUnit, the Linux kernel unit testing framework.
- Add intro and usage guide for KUnit
- Add API reference
Signed-off-by: Felix Guo <felixguoxiuping-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Signed-off-by: Brendan Higgins <brendanhiggins-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>
Cc: Jonathan Corbet <corbet-T1hC0tSOHrs@public.gmane.org>
Reviewed-by: Greg Kroah-Hartman <gregkh-hQyY1W1yCW8ekmWlsbkhG0B+6BGkLq7r@public.gmane.org>
Reviewed-by: Logan Gunthorpe <logang-OTvnGxWRz7hWk0Htik3J/w@public.gmane.org>
---
Documentation/dev-tools/index.rst | 1 +
Documentation/dev-tools/kunit/api/index.rst | 16 +
Documentation/dev-tools/kunit/api/test.rst | 14 +
Documentation/dev-tools/kunit/faq.rst | 62 +++
Documentation/dev-tools/kunit/index.rst | 79 +++
Documentation/dev-tools/kunit/start.rst | 180 ++++++
Documentation/dev-tools/kunit/usage.rst | 575 ++++++++++++++++++++
7 files changed, 927 insertions(+)
create mode 100644 Documentation/dev-tools/kunit/api/index.rst
create mode 100644 Documentation/dev-tools/kunit/api/test.rst
create mode 100644 Documentation/dev-tools/kunit/faq.rst
create mode 100644 Documentation/dev-tools/kunit/index.rst
create mode 100644 Documentation/dev-tools/kunit/start.rst
create mode 100644 Documentation/dev-tools/kunit/usage.rst
diff --git a/Documentation/dev-tools/index.rst b/Documentation/dev-tools/index.rst
index b0522a4dd1073..09dee10d25928 100644
--- a/Documentation/dev-tools/index.rst
+++ b/Documentation/dev-tools/index.rst
@@ -24,6 +24,7 @@ whole; patches welcome!
gdb-kernel-debugging
kgdb
kselftest
+ kunit/index
.. only:: subproject and html
diff --git a/Documentation/dev-tools/kunit/api/index.rst b/Documentation/dev-tools/kunit/api/index.rst
new file mode 100644
index 0000000000000..9b9bffe5d41a0
--- /dev/null
+++ b/Documentation/dev-tools/kunit/api/index.rst
@@ -0,0 +1,16 @@
+.. SPDX-License-Identifier: GPL-2.0
+
+=============
+API Reference
+=============
+.. toctree::
+
+ test
+
+This section documents the KUnit kernel testing API. It is divided into the
+following sections:
+
+================================= ==============================================
+:doc:`test` documents all of the standard testing API
+ excluding mocking or mocking related features.
+================================= ==============================================
diff --git a/Documentation/dev-tools/kunit/api/test.rst b/Documentation/dev-tools/kunit/api/test.rst
new file mode 100644
index 0000000000000..d0ce19b1e1185
--- /dev/null
+++ b/Documentation/dev-tools/kunit/api/test.rst
@@ -0,0 +1,14 @@
+.. SPDX-License-Identifier: GPL-2.0
+
+========
+Test API
+========
+
+This file documents all of the standard testing API excluding mocking or mocking
+related features.
+
+.. kernel-doc:: include/kunit/test.h
+ :internal:
+
+.. kernel-doc:: include/kunit/kunit-stream.h
+ :internal:
diff --git a/Documentation/dev-tools/kunit/faq.rst b/Documentation/dev-tools/kunit/faq.rst
new file mode 100644
index 0000000000000..bf2095112d899
--- /dev/null
+++ b/Documentation/dev-tools/kunit/faq.rst
@@ -0,0 +1,62 @@
+.. SPDX-License-Identifier: GPL-2.0
+
+==========================
+Frequently Asked Questions
+==========================
+
+How is this different from Autotest, kselftest, etc?
+====================================================
+KUnit is a unit testing framework. Autotest, kselftest (and some others) are
+not.
+
+A `unit test <https://martinfowler.com/bliki/UnitTest.html>`_ is supposed to
+test a single unit of code in isolation, hence the name. A unit test should be
+the finest granularity of testing and as such should allow all possible code
+paths to be tested in the code under test; this is only possible if the code
+under test is very small and does not have any external dependencies outside of
+the test's control like hardware.
+
+There are no testing frameworks currently available for the kernel that do not
+require installing the kernel on a test machine or in a VM and all require
+tests to be written in userspace and run on the kernel under test; this is true
+for Autotest, kselftest, and some others, disqualifying any of them from being
+considered unit testing frameworks.
+
+Does KUnit support running on architectures other than UML?
+===========================================================
+
+Yes, well, mostly.
+
+For the most part, the KUnit core framework (what you use to write the tests)
+can compile to any architecture; it compiles like just another part of the
+kernel and runs when the kernel boots. However, there is some infrastructure,
+like the KUnit Wrapper (``tools/testing/kunit/kunit.py``) that does not support
+other architectures.
+
+In short, this means that, yes, you can run KUnit on other architectures, but
+it might require more work than using KUnit on UML.
+
+For more information, see :ref:`kunit-on-non-uml`.
+
+What is the difference between a unit test and these other kinds of tests?
+==========================================================================
+Most existing tests for the Linux kernel would be categorized as an integration
+test, or an end-to-end test.
+
+- A unit test is supposed to test a single unit of code in isolation, hence the
+ name. A unit test should be the finest granularity of testing and as such
+ should allow all possible code paths to be tested in the code under test; this
+ is only possible if the code under test is very small and does not have any
+ external dependencies outside of the test's control like hardware.
+- An integration test tests the interaction between a minimal set of components,
+ usually just two or three. For example, someone might write an integration
+ test to test the interaction between a driver and a piece of hardware, or to
+ test the interaction between the userspace libraries the kernel provides and
+ the kernel itself; however, one of these tests would probably not test the
+ entire kernel along with hardware interactions and interactions with the
+ userspace.
+- An end-to-end test usually tests the entire system from the perspective of the
+ code under test. For example, someone might write an end-to-end test for the
+ kernel by installing a production configuration of the kernel on production
+ hardware with a production userspace and then trying to exercise some behavior
+ that depends on interactions between the hardware, the kernel, and userspace.
diff --git a/Documentation/dev-tools/kunit/index.rst b/Documentation/dev-tools/kunit/index.rst
new file mode 100644
index 0000000000000..a317ab45bfe2d
--- /dev/null
+++ b/Documentation/dev-tools/kunit/index.rst
@@ -0,0 +1,79 @@
+.. SPDX-License-Identifier: GPL-2.0
+
+=========================================
+KUnit - Unit Testing for the Linux Kernel
+=========================================
+
+.. toctree::
+ :maxdepth: 2
+
+ start
+ usage
+ api/index
+ faq
+
+What is KUnit?
+==============
+
+KUnit is a lightweight unit testing and mocking framework for the Linux kernel.
+These tests are able to be run locally on a developer's workstation without a VM
+or special hardware.
+
+KUnit is heavily inspired by JUnit, Python's unittest.mock, and
+Googletest/Googlemock for C++. KUnit provides facilities for defining unit test
+cases, grouping related test cases into test suites, providing common
+infrastructure for running tests, and much more.
+
+Get started now: :doc:`start`
+
+Why KUnit?
+==========
+
+A unit test is supposed to test a single unit of code in isolation, hence the
+name. A unit test should be the finest granularity of testing and as such should
+allow all possible code paths to be tested in the code under test; this is only
+possible if the code under test is very small and does not have any external
+dependencies outside of the test's control like hardware.
+
+Outside of KUnit, there are no testing frameworks currently
+available for the kernel that do not require installing the kernel on a test
+machine or in a VM and all require tests to be written in userspace running on
+the kernel; this is true for Autotest, and kselftest, disqualifying
+any of them from being considered unit testing frameworks.
+
+KUnit addresses the problem of being able to run tests without needing a virtual
+machine or actual hardware with User Mode Linux. User Mode Linux is a Linux
+architecture, like ARM or x86; however, unlike other architectures it compiles
+to a standalone program that can be run like any other program directly inside
+of a host operating system; to be clear, it does not require any virtualization
+support; it is just a regular program.
+
+KUnit is fast. Excluding build time, from invocation to completion KUnit can run
+several dozen tests in only 10 to 20 seconds; this might not sound like a big
+deal to some people, but having such fast and easy to run tests fundamentally
+changes the way you go about testing and even writing code in the first place.
+Linus himself said in his `git talk at Google
+<https://gist.github.com/lorn/1272686/revisions#diff-53c65572127855f1b003db4064a94573R874>`_:
+
+ "... a lot of people seem to think that performance is about doing the
+ same thing, just doing it faster, and that is not true. That is not what
+ performance is all about. If you can do something really fast, really
+ well, people will start using it differently."
+
+In this context Linus was talking about branching and merging,
+but this point also applies to testing. If your tests are slow, unreliable, are
+difficult to write, and require a special setup or special hardware to run,
+then you wait a lot longer to write tests, and you wait a lot longer to run
+tests; this means that tests are likely to break, unlikely to test a lot of
+things, and are unlikely to be rerun once they pass. If your tests are really
+fast, you run them all the time, every time you make a change, and every time
+someone sends you some code. Why trust that someone ran all their tests
+correctly on every change when you can just run them yourself in less time than
+it takes to read his / her test log?
+
+How do I use it?
+================
+
+* :doc:`start` - for new users of KUnit
+* :doc:`usage` - for a more detailed explanation of KUnit features
+* :doc:`api/index` - for the list of KUnit APIs used for testing
diff --git a/Documentation/dev-tools/kunit/start.rst b/Documentation/dev-tools/kunit/start.rst
new file mode 100644
index 0000000000000..6dc229e46bb34
--- /dev/null
+++ b/Documentation/dev-tools/kunit/start.rst
@@ -0,0 +1,180 @@
+.. SPDX-License-Identifier: GPL-2.0
+
+===============
+Getting Started
+===============
+
+Installing dependencies
+=======================
+KUnit has the same dependencies as the Linux kernel. As long as you can build
+the kernel, you can run KUnit.
+
+KUnit Wrapper
+=============
+Included with KUnit is a simple Python wrapper that helps format the output to
+easily use and read KUnit output. It handles building and running the kernel, as
+well as formatting the output.
+
+The wrapper can be run with:
+
+.. code-block:: bash
+
+ ./tools/testing/kunit/kunit.py run
+
+Creating a kunitconfig
+======================
+The Python script is a thin wrapper around Kbuild as such, it needs to be
+configured with a ``kunitconfig`` file. This file essentially contains the
+regular Kernel config, with the specific test targets as well.
+
+.. code-block:: bash
+
+ git clone -b master https://kunit.googlesource.com/kunitconfig $PATH_TO_KUNITCONFIG_REPO
+ cd $PATH_TO_LINUX_REPO
+ ln -s $PATH_TO_KUNIT_CONFIG_REPO/kunitconfig kunitconfig
+
+You may want to add kunitconfig to your local gitignore.
+
+Verifying KUnit Works
+---------------------
+
+To make sure that everything is set up correctly, simply invoke the Python
+wrapper from your kernel repo:
+
+.. code-block:: bash
+
+ ./tools/testing/kunit/kunit.py
+
+.. note::
+ You may want to run ``make mrproper`` first.
+
+If everything worked correctly, you should see the following:
+
+.. code-block:: bash
+
+ Generating .config ...
+ Building KUnit Kernel ...
+ Starting KUnit Kernel ...
+
+followed by a list of tests that are run. All of them should be passing.
+
+.. note::
+ Because it is building a lot of sources for the first time, the ``Building
+ kunit kernel`` step may take a while.
+
+Writing your first test
+=======================
+
+In your kernel repo let's add some code that we can test. Create a file
+``drivers/misc/example.h`` with the contents:
+
+.. code-block:: c
+
+ int misc_example_add(int left, int right);
+
+create a file ``drivers/misc/example.c``:
+
+.. code-block:: c
+
+ #include <linux/errno.h>
+
+ #include "example.h"
+
+ int misc_example_add(int left, int right)
+ {
+ return left + right;
+ }
+
+Now add the following lines to ``drivers/misc/Kconfig``:
+
+.. code-block:: kconfig
+
+ config MISC_EXAMPLE
+ bool "My example"
+
+and the following lines to ``drivers/misc/Makefile``:
+
+.. code-block:: make
+
+ obj-$(CONFIG_MISC_EXAMPLE) += example.o
+
+Now we are ready to write the test. The test will be in
+``drivers/misc/example-test.c``:
+
+.. code-block:: c
+
+ #include <kunit/test.h>
+ #include "example.h"
+
+ /* Define the test cases. */
+
+ static void misc_example_add_test_basic(struct kunit *test)
+ {
+ KUNIT_EXPECT_EQ(test, 1, misc_example_add(1, 0));
+ KUNIT_EXPECT_EQ(test, 2, misc_example_add(1, 1));
+ KUNIT_EXPECT_EQ(test, 0, misc_example_add(-1, 1));
+ KUNIT_EXPECT_EQ(test, INT_MAX, misc_example_add(0, INT_MAX));
+ KUNIT_EXPECT_EQ(test, -1, misc_example_add(INT_MAX, INT_MIN));
+ }
+
+ static void misc_example_test_failure(struct kunit *test)
+ {
+ KUNIT_FAIL(test, "This test never passes.");
+ }
+
+ static struct kunit_case misc_example_test_cases[] = {
+ KUNIT_CASE(misc_example_add_test_basic),
+ KUNIT_CASE(misc_example_test_failure),
+ {}
+ };
+
+ static struct kunit_suite misc_example_test_suite = {
+ .name = "misc-example",
+ .test_cases = misc_example_test_cases,
+ };
+ kunit_test_suite(misc_example_test_suite);
+
+Now add the following to ``drivers/misc/Kconfig``:
+
+.. code-block:: kconfig
+
+ config MISC_EXAMPLE_TEST
+ bool "Test for my example"
+ depends on MISC_EXAMPLE && KUNIT
+
+and the following to ``drivers/misc/Makefile``:
+
+.. code-block:: make
+
+ obj-$(CONFIG_MISC_EXAMPLE_TEST) += example-test.o
+
+Now add it to your ``kunitconfig``:
+
+.. code-block:: none
+
+ CONFIG_MISC_EXAMPLE=y
+ CONFIG_MISC_EXAMPLE_TEST=y
+
+Now you can run the test:
+
+.. code-block:: bash
+
+ ./tools/testing/kunit/kunit.py
+
+You should see the following failure:
+
+.. code-block:: none
+
+ ...
+ [16:08:57] [PASSED] misc-example:misc_example_add_test_basic
+ [16:08:57] [FAILED] misc-example:misc_example_test_failure
+ [16:08:57] EXPECTATION FAILED at drivers/misc/example-test.c:17
+ [16:08:57] This test never passes.
+ ...
+
+Congrats! You just wrote your first KUnit test!
+
+Next Steps
+==========
+* Check out the :doc:`usage` page for a more
+ in-depth explanation of KUnit.
diff --git a/Documentation/dev-tools/kunit/usage.rst b/Documentation/dev-tools/kunit/usage.rst
new file mode 100644
index 0000000000000..049886006dbce
--- /dev/null
+++ b/Documentation/dev-tools/kunit/usage.rst
@@ -0,0 +1,575 @@
+.. SPDX-License-Identifier: GPL-2.0
+
+===========
+Using KUnit
+===========
+
+The purpose of this document is to describe what KUnit is, how it works, how it
+is intended to be used, and all the concepts and terminology that are needed to
+understand it. This guide assumes a working knowledge of the Linux kernel and
+some basic knowledge of testing.
+
+For a high level introduction to KUnit, including setting up KUnit for your
+project, see :doc:`start`.
+
+Organization of this document
+=============================
+
+This document is organized into two main sections: Testing and Isolating
+Behavior. The first covers what a unit test is and how to use KUnit to write
+them. The second covers how to use KUnit to isolate code and make it possible
+to unit test code that was otherwise un-unit-testable.
+
+Testing
+=======
+
+What is KUnit?
+--------------
+
+"K" is short for "kernel" so "KUnit" is the "(Linux) Kernel Unit Testing
+Framework." KUnit is intended first and foremost for writing unit tests; it is
+general enough that it can be used to write integration tests; however, this is
+a secondary goal. KUnit has no ambition of being the only testing framework for
+the kernel; for example, it does not intend to be an end-to-end testing
+framework.
+
+What is Unit Testing?
+---------------------
+
+A `unit test <https://martinfowler.com/bliki/UnitTest.html>`_ is a test that
+tests code at the smallest possible scope, a *unit* of code. In the C
+programming language that's a function.
+
+Unit tests should be written for all the publicly exposed functions in a
+compilation unit; so that is all the functions that are exported in either a
+*class* (defined below) or all functions which are **not** static.
+
+Writing Tests
+-------------
+
+Test Cases
+~~~~~~~~~~
+
+The fundamental unit in KUnit is the test case. A test case is a function with
+the signature ``void (*)(struct kunit *test)``. It calls a function to be tested
+and then sets *expectations* for what should happen. For example:
+
+.. code-block:: c
+
+ void example_test_success(struct kunit *test)
+ {
+ }
+
+ void example_test_failure(struct kunit *test)
+ {
+ KUNIT_FAIL(test, "This test never passes.");
+ }
+
+In the above example ``example_test_success`` always passes because it does
+nothing; no expectations are set, so all expectations pass. On the other hand
+``example_test_failure`` always fails because it calls ``KUNIT_FAIL``, which is
+a special expectation that logs a message and causes the test case to fail.
+
+Expectations
+~~~~~~~~~~~~
+An *expectation* is a way to specify that you expect a piece of code to do
+something in a test. An expectation is called like a function. A test is made
+by setting expectations about the behavior of a piece of code under test; when
+one or more of the expectations fail, the test case fails and information about
+the failure is logged. For example:
+
+.. code-block:: c
+
+ void add_test_basic(struct kunit *test)
+ {
+ KUNIT_EXPECT_EQ(test, 1, add(1, 0));
+ KUNIT_EXPECT_EQ(test, 2, add(1, 1));
+ }
+
+In the above example ``add_test_basic`` makes a number of assertions about the
+behavior of a function called ``add``; the first parameter is always of type
+``struct kunit *``, which contains information about the current test context;
+the second parameter, in this case, is what the value is expected to be; the
+last value is what the value actually is. If ``add`` passes all of these
+expectations, the test case, ``add_test_basic`` will pass; if any one of these
+expectations fail, the test case will fail.
+
+It is important to understand that a test case *fails* when any expectation is
+violated; however, the test will continue running, potentially trying other
+expectations until the test case ends or is otherwise terminated. This is as
+opposed to *assertions* which are discussed later.
+
+To learn about more expectations supported by KUnit, see :doc:`api/test`.
+
+.. note::
+ A single test case should be pretty short, pretty easy to understand,
+ focused on a single behavior.
+
+For example, if we wanted to properly test the add function above, we would
+create additional tests cases which would each test a different property that an
+add function should have like this:
+
+.. code-block:: c
+
+ void add_test_basic(struct kunit *test)
+ {
+ KUNIT_EXPECT_EQ(test, 1, add(1, 0));
+ KUNIT_EXPECT_EQ(test, 2, add(1, 1));
+ }
+
+ void add_test_negative(struct kunit *test)
+ {
+ KUNIT_EXPECT_EQ(test, 0, add(-1, 1));
+ }
+
+ void add_test_max(struct kunit *test)
+ {
+ KUNIT_EXPECT_EQ(test, INT_MAX, add(0, INT_MAX));
+ KUNIT_EXPECT_EQ(test, -1, add(INT_MAX, INT_MIN));
+ }
+
+ void add_test_overflow(struct kunit *test)
+ {
+ KUNIT_EXPECT_EQ(test, INT_MIN, add(INT_MAX, 1));
+ }
+
+Notice how it is immediately obvious what all the properties that we are testing
+for are.
+
+Assertions
+~~~~~~~~~~
+
+KUnit also has the concept of an *assertion*. An assertion is just like an
+expectation except the assertion immediately terminates the test case if it is
+not satisfied.
+
+For example:
+
+.. code-block:: c
+
+ static void mock_test_do_expect_default_return(struct kunit *test)
+ {
+ struct mock_test_context *ctx = test->priv;
+ struct mock *mock = ctx->mock;
+ int param0 = 5, param1 = -5;
+ const char *two_param_types[] = {"int", "int"};
+ const void *two_params[] = {¶m0, ¶m1};
+ const void *ret;
+
+ ret = mock->do_expect(mock,
+ "test_printk", test_printk,
+ two_param_types, two_params,
+ ARRAY_SIZE(two_params));
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ret);
+ KUNIT_EXPECT_EQ(test, -4, *((int *) ret));
+ }
+
+In this example, the method under test should return a pointer to a value, so
+if the pointer returned by the method is null or an errno, we don't want to
+bother continuing the test since the following expectation could crash the test
+case. `ASSERT_NOT_ERR_OR_NULL(...)` allows us to bail out of the test case if
+the appropriate conditions have not been satisfied to complete the test.
+
+Test Suites
+~~~~~~~~~~~
+
+Now obviously one unit test isn't very helpful; the power comes from having
+many test cases covering all of your behaviors. Consequently it is common to
+have many *similar* tests; in order to reduce duplication in these closely
+related tests most unit testing frameworks provide the concept of a *test
+suite*, in KUnit we call it a *test suite*; all it is is just a collection of
+test cases for a unit of code with a set up function that gets invoked before
+every test cases and then a tear down function that gets invoked after every
+test case completes.
+
+Example:
+
+.. code-block:: c
+
+ static struct kunit_case example_test_cases[] = {
+ KUNIT_CASE(example_test_foo),
+ KUNIT_CASE(example_test_bar),
+ KUNIT_CASE(example_test_baz),
+ {}
+ };
+
+ static struct kunit_suite example_test_suite = {
+ .name = "example",
+ .init = example_test_init,
+ .exit = example_test_exit,
+ .test_cases = example_test_cases,
+ };
+ kunit_test_suite(example_test_suite);
+
+In the above example the test suite, ``example_test_suite``, would run the test
+cases ``example_test_foo``, ``example_test_bar``, and ``example_test_baz``,
+each would have ``example_test_init`` called immediately before it and would
+have ``example_test_exit`` called immediately after it.
+``kunit_test_suite(example_test_suite)`` registers the test suite with the
+KUnit test framework.
+
+.. note::
+ A test case will only be run if it is associated with a test suite.
+
+For a more information on these types of things see the :doc:`api/test`.
+
+Isolating Behavior
+==================
+
+The most important aspect of unit testing that other forms of testing do not
+provide is the ability to limit the amount of code under test to a single unit.
+In practice, this is only possible by being able to control what code gets run
+when the unit under test calls a function and this is usually accomplished
+through some sort of indirection where a function is exposed as part of an API
+such that the definition of that function can be changed without affecting the
+rest of the code base. In the kernel this primarily comes from two constructs,
+classes, structs that contain function pointers that are provided by the
+implementer, and architecture specific functions which have definitions selected
+at compile time.
+
+Classes
+-------
+
+Classes are not a construct that is built into the C programming language;
+however, it is an easily derived concept. Accordingly, pretty much every project
+that does not use a standardized object oriented library (like GNOME's GObject)
+has their own slightly different way of doing object oriented programming; the
+Linux kernel is no exception.
+
+The central concept in kernel object oriented programming is the class. In the
+kernel, a *class* is a struct that contains function pointers. This creates a
+contract between *implementers* and *users* since it forces them to use the
+same function signature without having to call the function directly. In order
+for it to truly be a class, the function pointers must specify that a pointer
+to the class, known as a *class handle*, be one of the parameters; this makes
+it possible for the member functions (also known as *methods*) to have access
+to member variables (more commonly known as *fields*) allowing the same
+implementation to have multiple *instances*.
+
+Typically a class can be *overridden* by *child classes* by embedding the
+*parent class* in the child class. Then when a method provided by the child
+class is called, the child implementation knows that the pointer passed to it is
+of a parent contained within the child; because of this, the child can compute
+the pointer to itself because the pointer to the parent is always a fixed offset
+from the pointer to the child; this offset is the offset of the parent contained
+in the child struct. For example:
+
+.. code-block:: c
+
+ struct shape {
+ int (*area)(struct shape *this);
+ };
+
+ struct rectangle {
+ struct shape parent;
+ int length;
+ int width;
+ };
+
+ int rectangle_area(struct shape *this)
+ {
+ struct rectangle *self = container_of(this, struct shape, parent);
+
+ return self->length * self->width;
+ };
+
+ void rectangle_new(struct rectangle *self, int length, int width)
+ {
+ self->parent.area = rectangle_area;
+ self->length = length;
+ self->width = width;
+ }
+
+In this example (as in most kernel code) the operation of computing the pointer
+to the child from the pointer to the parent is done by ``container_of``.
+
+Faking Classes
+~~~~~~~~~~~~~~
+
+In order to unit test a piece of code that calls a method in a class, the
+behavior of the method must be controllable, otherwise the test ceases to be a
+unit test and becomes an integration test.
+
+A fake just provides an implementation of a piece of code that is different than
+what runs in a production instance, but behaves identically from the standpoint
+of the callers; this is usually done to replace a dependency that is hard to
+deal with, or is slow.
+
+A good example for this might be implementing a fake EEPROM that just stores the
+"contents" in an internal buffer. For example, let's assume we have a class that
+represents an EEPROM:
+
+.. code-block:: c
+
+ struct eeprom {
+ ssize_t (*read)(struct eeprom *this, size_t offset, char *buffer, size_t count);
+ ssize_t (*write)(struct eeprom *this, size_t offset, const char *buffer, size_t count);
+ };
+
+And we want to test some code that buffers writes to the EEPROM:
+
+.. code-block:: c
+
+ struct eeprom_buffer {
+ ssize_t (*write)(struct eeprom_buffer *this, const char *buffer, size_t count);
+ int flush(struct eeprom_buffer *this);
+ size_t flush_count; /* Flushes when buffer exceeds flush_count. */
+ };
+
+ struct eeprom_buffer *new_eeprom_buffer(struct eeprom *eeprom);
+ void destroy_eeprom_buffer(struct eeprom *eeprom);
+
+We can easily test this code by *faking out* the underlying EEPROM:
+
+.. code-block:: c
+
+ struct fake_eeprom {
+ struct eeprom parent;
+ char contents[FAKE_EEPROM_CONTENTS_SIZE];
+ };
+
+ ssize_t fake_eeprom_read(struct eeprom *parent, size_t offset, char *buffer, size_t count)
+ {
+ struct fake_eeprom *this = container_of(parent, struct fake_eeprom, parent);
+
+ count = min(count, FAKE_EEPROM_CONTENTS_SIZE - offset);
+ memcpy(buffer, this->contents + offset, count);
+
+ return count;
+ }
+
+ ssize_t fake_eeprom_write(struct eeprom *this, size_t offset, const char *buffer, size_t count)
+ {
+ struct fake_eeprom *this = container_of(parent, struct fake_eeprom, parent);
+
+ count = min(count, FAKE_EEPROM_CONTENTS_SIZE - offset);
+ memcpy(this->contents + offset, buffer, count);
+
+ return count;
+ }
+
+ void fake_eeprom_init(struct fake_eeprom *this)
+ {
+ this->parent.read = fake_eeprom_read;
+ this->parent.write = fake_eeprom_write;
+ memset(this->contents, 0, FAKE_EEPROM_CONTENTS_SIZE);
+ }
+
+We can now use it to test ``struct eeprom_buffer``:
+
+.. code-block:: c
+
+ struct eeprom_buffer_test {
+ struct fake_eeprom *fake_eeprom;
+ struct eeprom_buffer *eeprom_buffer;
+ };
+
+ static void eeprom_buffer_test_does_not_write_until_flush(struct kunit *test)
+ {
+ struct eeprom_buffer_test *ctx = test->priv;
+ struct eeprom_buffer *eeprom_buffer = ctx->eeprom_buffer;
+ struct fake_eeprom *fake_eeprom = ctx->fake_eeprom;
+ char buffer[] = {0xff};
+
+ eeprom_buffer->flush_count = SIZE_MAX;
+
+ eeprom_buffer->write(eeprom_buffer, buffer, 1);
+ KUNIT_EXPECT_EQ(test, fake_eeprom->contents[0], 0);
+
+ eeprom_buffer->write(eeprom_buffer, buffer, 1);
+ KUNIT_EXPECT_EQ(test, fake_eeprom->contents[1], 0);
+
+ eeprom_buffer->flush(eeprom_buffer);
+ KUNIT_EXPECT_EQ(test, fake_eeprom->contents[0], 0xff);
+ KUNIT_EXPECT_EQ(test, fake_eeprom->contents[1], 0xff);
+ }
+
+ static void eeprom_buffer_test_flushes_after_flush_count_met(struct kunit *test)
+ {
+ struct eeprom_buffer_test *ctx = test->priv;
+ struct eeprom_buffer *eeprom_buffer = ctx->eeprom_buffer;
+ struct fake_eeprom *fake_eeprom = ctx->fake_eeprom;
+ char buffer[] = {0xff};
+
+ eeprom_buffer->flush_count = 2;
+
+ eeprom_buffer->write(eeprom_buffer, buffer, 1);
+ KUNIT_EXPECT_EQ(test, fake_eeprom->contents[0], 0);
+
+ eeprom_buffer->write(eeprom_buffer, buffer, 1);
+ KUNIT_EXPECT_EQ(test, fake_eeprom->contents[0], 0xff);
+ KUNIT_EXPECT_EQ(test, fake_eeprom->contents[1], 0xff);
+ }
+
+ static void eeprom_buffer_test_flushes_increments_of_flush_count(struct kunit *test)
+ {
+ struct eeprom_buffer_test *ctx = test->priv;
+ struct eeprom_buffer *eeprom_buffer = ctx->eeprom_buffer;
+ struct fake_eeprom *fake_eeprom = ctx->fake_eeprom;
+ char buffer[] = {0xff, 0xff};
+
+ eeprom_buffer->flush_count = 2;
+
+ eeprom_buffer->write(eeprom_buffer, buffer, 1);
+ KUNIT_EXPECT_EQ(test, fake_eeprom->contents[0], 0);
+
+ eeprom_buffer->write(eeprom_buffer, buffer, 2);
+ KUNIT_EXPECT_EQ(test, fake_eeprom->contents[0], 0xff);
+ KUNIT_EXPECT_EQ(test, fake_eeprom->contents[1], 0xff);
+ /* Should have only flushed the first two bytes. */
+ KUNIT_EXPECT_EQ(test, fake_eeprom->contents[2], 0);
+ }
+
+ static int eeprom_buffer_test_init(struct kunit *test)
+ {
+ struct eeprom_buffer_test *ctx;
+
+ ctx = kunit_kzalloc(test, sizeof(*ctx), GFP_KERNEL);
+ ASSERT_NOT_ERR_OR_NULL(test, ctx);
+
+ ctx->fake_eeprom = kunit_kzalloc(test, sizeof(*ctx->fake_eeprom), GFP_KERNEL);
+ ASSERT_NOT_ERR_OR_NULL(test, ctx->fake_eeprom);
+
+ ctx->eeprom_buffer = new_eeprom_buffer(&ctx->fake_eeprom->parent);
+ ASSERT_NOT_ERR_OR_NULL(test, ctx->eeprom_buffer);
+
+ test->priv = ctx;
+
+ return 0;
+ }
+
+ static void eeprom_buffer_test_exit(struct kunit *test)
+ {
+ struct eeprom_buffer_test *ctx = test->priv;
+
+ destroy_eeprom_buffer(ctx->eeprom_buffer);
+ }
+
+.. _kunit-on-non-uml:
+
+KUnit on non-UML architectures
+==============================
+
+By default KUnit uses UML as a way to provide dependencies for code under test.
+Under most circumstances KUnit's usage of UML should be treated as an
+implementation detail of how KUnit works under the hood. Nevertheless, there
+are instances where being able to run architecture specific code, or test
+against real hardware is desirable. For these reasons KUnit supports running on
+other architectures.
+
+Running existing KUnit tests on non-UML architectures
+-----------------------------------------------------
+
+There are some special considerations when running existing KUnit tests on
+non-UML architectures:
+
+* Hardware may not be deterministic, so a test that always passes or fails
+ when run under UML may not always do so on real hardware.
+* Hardware and VM environments may not be hermetic. KUnit tries its best to
+ provide a hermetic environment to run tests; however, it cannot manage state
+ that it doesn't know about outside of the kernel. Consequently, tests that
+ may be hermetic on UML may not be hermetic on other architectures.
+* Some features and tooling may not be supported outside of UML.
+* Hardware and VMs are slower than UML.
+
+None of these are reasons not to run your KUnit tests on real hardware; they are
+only things to be aware of when doing so.
+
+The biggest impediment will likely be that certain KUnit features and
+infrastructure may not support your target environment. For example, at this
+time the KUnit Wrapper (``tools/testing/kunit/kunit.py``) does not work outside
+of UML. Unfortunately, there is no way around this. Using UML (or even just a
+particular architecture) allows us to make a lot of assumptions that make it
+possible to do things which might otherwise be impossible.
+
+Nevertheless, all core KUnit framework features are fully supported on all
+architectures, and using them is straightforward: all you need to do is to take
+your kunitconfig, your Kconfig options for the tests you would like to run, and
+merge them into whatever config your are using for your platform. That's it!
+
+For example, let's say you have the following kunitconfig:
+
+.. code-block:: none
+
+ CONFIG_KUNIT=y
+ CONFIG_KUNIT_EXAMPLE_TEST=y
+
+If you wanted to run this test on an x86 VM, you might add the following config
+options to your ``.config``:
+
+.. code-block:: none
+
+ CONFIG_KUNIT=y
+ CONFIG_KUNIT_EXAMPLE_TEST=y
+ CONFIG_SERIAL_8250=y
+ CONFIG_SERIAL_8250_CONSOLE=y
+
+All these new options do is enable support for a common serial console needed
+for logging.
+
+Next, you could build a kernel with these tests as follows:
+
+
+.. code-block:: bash
+
+ make ARCH=x86 olddefconfig
+ make ARCH=x86
+
+Once you have built a kernel, you could run it on QEMU as follows:
+
+.. code-block:: bash
+
+ qemu-system-x86_64 -enable-kvm \
+ -m 1024 \
+ -kernel arch/x86_64/boot/bzImage \
+ -append 'console=ttyS0' \
+ --nographic
+
+Interspersed in the kernel logs you might see the following:
+
+.. code-block:: none
+
+ TAP version 14
+ # Subtest: example
+ 1..1
+ # example_simple_test: initializing
+ ok 1 - example_simple_test
+ ok 1 - example
+
+Congratulations, you just ran a KUnit test on the x86 architecture!
+
+Writing new tests for other architectures
+-----------------------------------------
+
+The first thing you must do is ask yourself whether it is necessary to write a
+KUnit test for a specific architecture, and then whether it is necessary to
+write that test for a particular piece of hardware. In general, writing a test
+that depends on having access to a particular piece of hardware or software (not
+included in the Linux source repo) should be avoided at all costs.
+
+Even if you only ever plan on running your KUnit test on your hardware
+configuration, other people may want to run your tests and may not have access
+to your hardware. If you write your test to run on UML, then anyone can run your
+tests without knowing anything about your particular setup, and you can still
+run your tests on your hardware setup just by compiling for your architecture.
+
+.. important::
+ Always prefer tests that run on UML to tests that only run under a particular
+ architecture, and always prefer tests that run under QEMU or another easy
+ (and monitarily free) to obtain software environment to a specific piece of
+ hardware.
+
+Nevertheless, there are still valid reasons to write an architecture or hardware
+specific test: for example, you might want to test some code that really belongs
+in ``arch/some-arch/*``. Even so, try your best to write the test so that it
+does not depend on physical hardware: if some of your test cases don't need the
+hardware, only require the hardware for tests that actually need it.
+
+Now that you have narrowed down exactly what bits are hardware specific, the
+actual procedure for writing and running the tests is pretty much the same as
+writing normal KUnit tests. One special caveat is that you have to reset
+hardware state in between test cases; if this is not possible, you may only be
+able to run one test case per invocation.
+
+.. TODO(brendanhiggins-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org): Add an actual example of an architecture
+ dependent KUnit test.
--
2.22.0.410.gd8fdbe21b5-goog
^ permalink raw reply related
* [PATCH v7 14/18] kunit: defconfig: add defconfigs for building KUnit tests
From: Brendan Higgins @ 2019-07-09 6:30 UTC (permalink / raw)
To: frowand.list, gregkh, jpoimboe, keescook, kieran.bingham, mcgrof,
peterz, robh, sboyd, shuah, tytso, yamada.masahiro
Cc: devicetree, dri-devel, kunit-dev, linux-doc, linux-fsdevel,
linux-kbuild, linux-kernel, linux-kselftest, linux-nvdimm,
linux-um, Alexander.Levin, Tim.Bird, amir73il, dan.carpenter,
daniel, jdike, joel, julia.lawall, khilman, knut.omang, logang,
mpe, pmladek, rdunlap, richard, rientjes, rostedt, wfg,
Brendan Higgins
In-Reply-To: <20190709063023.251446-1-brendanhiggins@google.com>
Add defconfig for UML and a fragment that can be used to configure other
architectures for building KUnit tests. Add option to kunit_tool to use
a defconfig to create the kunitconfig.
Signed-off-by: Brendan Higgins <brendanhiggins@google.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Logan Gunthorpe <logang@deltatee.com>
---
arch/um/configs/kunit_defconfig | 8 ++++++++
tools/testing/kunit/configs/all_tests.config | 8 ++++++++
tools/testing/kunit/kunit.py | 18 ++++++++++++++++--
tools/testing/kunit/kunit_kernel.py | 3 ++-
4 files changed, 34 insertions(+), 3 deletions(-)
create mode 100644 arch/um/configs/kunit_defconfig
create mode 100644 tools/testing/kunit/configs/all_tests.config
diff --git a/arch/um/configs/kunit_defconfig b/arch/um/configs/kunit_defconfig
new file mode 100644
index 0000000000000..bfe49689038f1
--- /dev/null
+++ b/arch/um/configs/kunit_defconfig
@@ -0,0 +1,8 @@
+CONFIG_OF=y
+CONFIG_OF_UNITTEST=y
+CONFIG_OF_OVERLAY=y
+CONFIG_I2C=y
+CONFIG_I2C_MUX=y
+CONFIG_KUNIT=y
+CONFIG_KUNIT_TEST=y
+CONFIG_KUNIT_EXAMPLE_TEST=y
diff --git a/tools/testing/kunit/configs/all_tests.config b/tools/testing/kunit/configs/all_tests.config
new file mode 100644
index 0000000000000..bfe49689038f1
--- /dev/null
+++ b/tools/testing/kunit/configs/all_tests.config
@@ -0,0 +1,8 @@
+CONFIG_OF=y
+CONFIG_OF_UNITTEST=y
+CONFIG_OF_OVERLAY=y
+CONFIG_I2C=y
+CONFIG_I2C_MUX=y
+CONFIG_KUNIT=y
+CONFIG_KUNIT_TEST=y
+CONFIG_KUNIT_EXAMPLE_TEST=y
diff --git a/tools/testing/kunit/kunit.py b/tools/testing/kunit/kunit.py
index da11bd62a4b82..3e51dc4febfdc 100755
--- a/tools/testing/kunit/kunit.py
+++ b/tools/testing/kunit/kunit.py
@@ -11,6 +11,7 @@ import argparse
import sys
import os
import time
+import shutil
from collections import namedtuple
from enum import Enum, auto
@@ -21,7 +22,7 @@ import kunit_parser
KunitResult = namedtuple('KunitResult', ['status','result'])
-KunitRequest = namedtuple('KunitRequest', ['raw_output','timeout', 'jobs', 'build_dir'])
+KunitRequest = namedtuple('KunitRequest', ['raw_output','timeout', 'jobs', 'build_dir', 'defconfig'])
class KunitStatus(Enum):
SUCCESS = auto()
@@ -29,8 +30,16 @@ class KunitStatus(Enum):
BUILD_FAILURE = auto()
TEST_FAILURE = auto()
+def create_default_kunitconfig():
+ if not os.path.exists(kunit_kernel.KUNITCONFIG_PATH):
+ shutil.copyfile('arch/um/configs/kunit_defconfig',
+ kunit_kernel.KUNITCONFIG_PATH)
+
def run_tests(linux: kunit_kernel.LinuxSourceTree,
request: KunitRequest) -> KunitResult:
+ if request.defconfig:
+ create_default_kunitconfig()
+
config_start = time.time()
success = linux.build_reconfig(request.build_dir)
config_end = time.time()
@@ -99,13 +108,18 @@ def main(argv, linux):
'directory.',
type=str, default=None, metavar='build_dir')
+ run_parser.add_argument('--defconfig',
+ help='Uses a default kunitconfig.',
+ action='store_true')
+
cli_args = parser.parse_args(argv)
if cli_args.subcommand == 'run':
request = KunitRequest(cli_args.raw_output,
cli_args.timeout,
cli_args.jobs,
- cli_args.build_dir)
+ cli_args.build_dir,
+ cli_args.defconfig)
result = run_tests(linux, request)
if result.status != KunitStatus.SUCCESS:
sys.exit(1)
diff --git a/tools/testing/kunit/kunit_kernel.py b/tools/testing/kunit/kunit_kernel.py
index 07c0abf2f47df..bf38768353313 100644
--- a/tools/testing/kunit/kunit_kernel.py
+++ b/tools/testing/kunit/kunit_kernel.py
@@ -14,6 +14,7 @@ import os
import kunit_config
KCONFIG_PATH = '.config'
+KUNITCONFIG_PATH = 'kunitconfig'
class ConfigError(Exception):
"""Represents an error trying to configure the Linux kernel."""
@@ -81,7 +82,7 @@ class LinuxSourceTree(object):
def __init__(self):
self._kconfig = kunit_config.Kconfig()
- self._kconfig.read_from_file('kunitconfig')
+ self._kconfig.read_from_file(KUNITCONFIG_PATH)
self._ops = LinuxSourceTreeOperations()
def clean(self):
--
2.22.0.410.gd8fdbe21b5-goog
^ permalink raw reply related
* [PATCH v7 13/18] kunit: tool: add Python wrappers for running KUnit tests
From: Brendan Higgins @ 2019-07-09 6:30 UTC (permalink / raw)
To: frowand.list-Re5JQEeQqe8AvxtiuMwx3w,
gregkh-hQyY1W1yCW8ekmWlsbkhG0B+6BGkLq7r,
jpoimboe-H+wXaHxf7aLQT0dZR+AlfA, keescook-hpIqsD4AKlfQT0dZR+AlfA,
kieran.bingham-ryLnwIuWjnjg/C1BVhZhaw,
mcgrof-DgEjT+Ai2ygdnm+yROfE0A, peterz-wEGCiKHe2LqWVfeAwA7xHQ,
robh-DgEjT+Ai2ygdnm+yROfE0A, sboyd-DgEjT+Ai2ygdnm+yROfE0A,
shuah-DgEjT+Ai2ygdnm+yROfE0A, tytso-3s7WtUTddSA,
yamada.masahiro-uWyLwvC0a2jby3iVrkZq2A
Cc: pmladek-IBi9RG/b67k, linux-doc-u79uwXL29TY76Z2rM5mHXA,
amir73il-Re5JQEeQqe8AvxtiuMwx3w, Brendan Higgins,
dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW,
Alexander.Levin-0li6OtcxBFHby3iVrkZq2A,
linux-kselftest-u79uwXL29TY76Z2rM5mHXA,
linux-nvdimm-hn68Rpc1hR1g9hUCZPvPmw,
khilman-rdvid1DuHRBWk0Htik3J/w, knut.omang-QHcLZuEGTsvQT0dZR+AlfA,
Felix Guo, wfg-VuQAYsv1563Yd54FQh9/CA,
joel-U3u1mxZcP9KHXe+LvDLADg, rientjes-hpIqsD4AKlfQT0dZR+AlfA,
jdike-OPE4K8JWMJJBDgjK7y7TUQ,
dan.carpenter-QHcLZuEGTsvQT0dZR+AlfA,
devicetree-u79uwXL29TY76Z2rM5mHXA,
linux-kbuild-u79uwXL29TY76Z2rM5mHXA, Tim.Bird-7U/KSKJipcs,
linux-um-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
rostedt-nx8X9YLhiw1AfugRpC6u6w, julia.lawall-L2FTfq7BK8M,
kunit-dev-/JYPxA39Uh5TLH3MbocFFw, richard-/L3Ra7n9ekc,
rdunlap-wEGCiKHe2LqWVfeAwA7xHQ,
linux-kernel-u79uwXL29TY76Z2rM5mHXA, daniel-/w4YWyX8dFk,
mpe-Gsx/Oe8HsFggBc27wqDAHg, linux-fsdevel-u79uwXL29TY76Z2rM5mHXA
In-Reply-To: <20190709063023.251446-1-brendanhiggins-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>
From: Felix Guo <felixguoxiuping-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
The ultimate goal is to create minimal isolated test binaries; in the
meantime we are using UML to provide the infrastructure to run tests, so
define an abstract way to configure and run tests that allow us to
change the context in which tests are built without affecting the user.
This also makes pretty and dynamic error reporting, and a lot of other
nice features easier.
kunit_config.py:
- parse .config and Kconfig files.
kunit_kernel.py: provides helper functions to:
- configure the kernel using kunitconfig.
- build the kernel with the appropriate configuration.
- provide function to invoke the kernel and stream the output back.
kunit_parser.py: parses raw logs returned out by kunit_kernel and
displays them in a user friendly way.
test_data/*: samples of test data for testing kunit.py, kunit_config.py,
etc.
Signed-off-by: Felix Guo <felixguoxiuping-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Signed-off-by: Brendan Higgins <brendanhiggins-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>
Reviewed-by: Greg Kroah-Hartman <gregkh-hQyY1W1yCW8ekmWlsbkhG0B+6BGkLq7r@public.gmane.org>
Reviewed-by: Logan Gunthorpe <logang-OTvnGxWRz7hWk0Htik3J/w@public.gmane.org>
---
tools/testing/kunit/.gitignore | 3 +
tools/testing/kunit/kunit.py | 116 +++++++
tools/testing/kunit/kunit_config.py | 66 ++++
tools/testing/kunit/kunit_kernel.py | 148 +++++++++
tools/testing/kunit/kunit_parser.py | 290 ++++++++++++++++++
tools/testing/kunit/kunit_tool_test.py | 206 +++++++++++++
.../test_is_test_passed-all_passed.log | 32 ++
.../test_data/test_is_test_passed-crash.log | 69 +++++
.../test_data/test_is_test_passed-failure.log | 36 +++
.../test_is_test_passed-no_tests_run.log | 75 +++++
.../test_output_isolated_correctly.log | 106 +++++++
.../test_data/test_read_from_file.kconfig | 17 +
12 files changed, 1164 insertions(+)
create mode 100644 tools/testing/kunit/.gitignore
create mode 100755 tools/testing/kunit/kunit.py
create mode 100644 tools/testing/kunit/kunit_config.py
create mode 100644 tools/testing/kunit/kunit_kernel.py
create mode 100644 tools/testing/kunit/kunit_parser.py
create mode 100755 tools/testing/kunit/kunit_tool_test.py
create mode 100644 tools/testing/kunit/test_data/test_is_test_passed-all_passed.log
create mode 100644 tools/testing/kunit/test_data/test_is_test_passed-crash.log
create mode 100644 tools/testing/kunit/test_data/test_is_test_passed-failure.log
create mode 100644 tools/testing/kunit/test_data/test_is_test_passed-no_tests_run.log
create mode 100644 tools/testing/kunit/test_data/test_output_isolated_correctly.log
create mode 100644 tools/testing/kunit/test_data/test_read_from_file.kconfig
diff --git a/tools/testing/kunit/.gitignore b/tools/testing/kunit/.gitignore
new file mode 100644
index 0000000000000..c791ff59a37a9
--- /dev/null
+++ b/tools/testing/kunit/.gitignore
@@ -0,0 +1,3 @@
+# Byte-compiled / optimized / DLL files
+__pycache__/
+*.py[cod]
\ No newline at end of file
diff --git a/tools/testing/kunit/kunit.py b/tools/testing/kunit/kunit.py
new file mode 100755
index 0000000000000..da11bd62a4b82
--- /dev/null
+++ b/tools/testing/kunit/kunit.py
@@ -0,0 +1,116 @@
+#!/usr/bin/python3
+# SPDX-License-Identifier: GPL-2.0
+#
+# A thin wrapper on top of the KUnit Kernel
+#
+# Copyright (C) 2019, Google LLC.
+# Author: Felix Guo <felixguoxiuping-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
+# Author: Brendan Higgins <brendanhiggins-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>
+
+import argparse
+import sys
+import os
+import time
+
+from collections import namedtuple
+from enum import Enum, auto
+
+import kunit_config
+import kunit_kernel
+import kunit_parser
+
+KunitResult = namedtuple('KunitResult', ['status','result'])
+
+KunitRequest = namedtuple('KunitRequest', ['raw_output','timeout', 'jobs', 'build_dir'])
+
+class KunitStatus(Enum):
+ SUCCESS = auto()
+ CONFIG_FAILURE = auto()
+ BUILD_FAILURE = auto()
+ TEST_FAILURE = auto()
+
+def run_tests(linux: kunit_kernel.LinuxSourceTree,
+ request: KunitRequest) -> KunitResult:
+ config_start = time.time()
+ success = linux.build_reconfig(request.build_dir)
+ config_end = time.time()
+ if not success:
+ return KunitResult(KunitStatus.CONFIG_FAILURE, 'could not configure kernel')
+
+ kunit_parser.print_with_timestamp('Building KUnit Kernel ...')
+
+ build_start = time.time()
+ success = linux.build_um_kernel(request.jobs, request.build_dir)
+ build_end = time.time()
+ if not success:
+ return KunitResult(KunitStatus.BUILD_FAILURE, 'could not build kernel')
+
+ kunit_parser.print_with_timestamp('Starting KUnit Kernel ...')
+ test_start = time.time()
+
+ test_result = kunit_parser.TestResult(kunit_parser.TestStatus.SUCCESS,
+ [],
+ 'Tests not Parsed.')
+ if request.raw_output:
+ kunit_parser.raw_output(
+ linux.run_kernel(timeout=request.timeout))
+ else:
+ kunit_output = linux.run_kernel(timeout=request.timeout)
+ test_result = kunit_parser.parse_run_tests(kunit_output)
+ test_end = time.time()
+
+ kunit_parser.print_with_timestamp((
+ 'Elapsed time: %.3fs total, %.3fs configuring, %.3fs ' +
+ 'building, %.3fs running\n') % (
+ test_end - config_start,
+ config_end - config_start,
+ build_end - build_start,
+ test_end - test_start))
+
+ if test_result.status != kunit_parser.TestStatus.SUCCESS:
+ return KunitResult(KunitStatus.TEST_FAILURE, test_result)
+ else:
+ return KunitResult(KunitStatus.SUCCESS, test_result)
+
+def main(argv, linux):
+ parser = argparse.ArgumentParser(
+ description='Helps writing and running KUnit tests.')
+ subparser = parser.add_subparsers(dest='subcommand')
+
+ run_parser = subparser.add_parser('run', help='Runs KUnit tests.')
+ run_parser.add_argument('--raw_output', help='don\'t format output from kernel',
+ action='store_true')
+
+ run_parser.add_argument('--timeout',
+ help='maximum number of seconds to allow for all tests '
+ 'to run. This does not include time taken to build the '
+ 'tests.',
+ type=int,
+ default=300,
+ metavar='timeout')
+
+ run_parser.add_argument('--jobs',
+ help='As in the make command, "Specifies the number of '
+ 'jobs (commands) to run simultaneously."',
+ type=int, default=8, metavar='jobs')
+
+ run_parser.add_argument('--build_dir',
+ help='As in the make command, it specifies the build '
+ 'directory.',
+ type=str, default=None, metavar='build_dir')
+
+ cli_args = parser.parse_args(argv)
+
+ if cli_args.subcommand == 'run':
+ request = KunitRequest(cli_args.raw_output,
+ cli_args.timeout,
+ cli_args.jobs,
+ cli_args.build_dir)
+ result = run_tests(linux, request)
+ if result.status != KunitStatus.SUCCESS:
+ sys.exit(1)
+ else:
+ parser.print_help()
+
+if __name__ == '__main__':
+ main(sys.argv[1:], kunit_kernel.LinuxSourceTree())
diff --git a/tools/testing/kunit/kunit_config.py b/tools/testing/kunit/kunit_config.py
new file mode 100644
index 0000000000000..ebf3942b23f51
--- /dev/null
+++ b/tools/testing/kunit/kunit_config.py
@@ -0,0 +1,66 @@
+# SPDX-License-Identifier: GPL-2.0
+#
+# Builds a .config from a kunitconfig.
+#
+# Copyright (C) 2019, Google LLC.
+# Author: Felix Guo <felixguoxiuping-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
+# Author: Brendan Higgins <brendanhiggins-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>
+
+import collections
+import re
+
+CONFIG_IS_NOT_SET_PATTERN = r'^# CONFIG_\w+ is not set$'
+CONFIG_PATTERN = r'^CONFIG_\w+=\S+$'
+
+KconfigEntryBase = collections.namedtuple('KconfigEntry', ['raw_entry'])
+
+
+class KconfigEntry(KconfigEntryBase):
+
+ def __str__(self) -> str:
+ return self.raw_entry
+
+
+class KconfigParseError(Exception):
+ """Error parsing Kconfig defconfig or .config."""
+
+
+class Kconfig(object):
+ """Represents defconfig or .config specified using the Kconfig language."""
+
+ def __init__(self):
+ self._entries = []
+
+ def entries(self):
+ return set(self._entries)
+
+ def add_entry(self, entry: KconfigEntry) -> None:
+ self._entries.append(entry)
+
+ def is_subset_of(self, other: 'Kconfig') -> bool:
+ return self.entries().issubset(other.entries())
+
+ def write_to_file(self, path: str) -> None:
+ with open(path, 'w') as f:
+ for entry in self.entries():
+ f.write(str(entry) + '\n')
+
+ def parse_from_string(self, blob: str) -> None:
+ """Parses a string containing KconfigEntrys and populates this Kconfig."""
+ self._entries = []
+ is_not_set_matcher = re.compile(CONFIG_IS_NOT_SET_PATTERN)
+ config_matcher = re.compile(CONFIG_PATTERN)
+ for line in blob.split('\n'):
+ line = line.strip()
+ if not line:
+ continue
+ elif config_matcher.match(line) or is_not_set_matcher.match(line):
+ self._entries.append(KconfigEntry(line))
+ elif line[0] == '#':
+ continue
+ else:
+ raise KconfigParseError('Failed to parse: ' + line)
+
+ def read_from_file(self, path: str) -> None:
+ with open(path, 'r') as f:
+ self.parse_from_string(f.read())
diff --git a/tools/testing/kunit/kunit_kernel.py b/tools/testing/kunit/kunit_kernel.py
new file mode 100644
index 0000000000000..07c0abf2f47df
--- /dev/null
+++ b/tools/testing/kunit/kunit_kernel.py
@@ -0,0 +1,148 @@
+# SPDX-License-Identifier: GPL-2.0
+#
+# Runs UML kernel, collects output, and handles errors.
+#
+# Copyright (C) 2019, Google LLC.
+# Author: Felix Guo <felixguoxiuping-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
+# Author: Brendan Higgins <brendanhiggins-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>
+
+
+import logging
+import subprocess
+import os
+
+import kunit_config
+
+KCONFIG_PATH = '.config'
+
+class ConfigError(Exception):
+ """Represents an error trying to configure the Linux kernel."""
+
+
+class BuildError(Exception):
+ """Represents an error trying to build the Linux kernel."""
+
+
+class LinuxSourceTreeOperations(object):
+ """An abstraction over command line operations performed on a source tree."""
+
+ def make_mrproper(self):
+ try:
+ subprocess.check_output(['make', 'mrproper'])
+ except OSError as e:
+ raise ConfigError('Could not call make command: ' + e)
+ except subprocess.CalledProcessError as e:
+ raise ConfigError(e.output)
+
+ def make_olddefconfig(self, build_dir):
+ command = ['make', 'ARCH=um', 'olddefconfig']
+ if build_dir:
+ command += ['O=' + build_dir]
+ try:
+ subprocess.check_output(command)
+ except OSError as e:
+ raise ConfigError('Could not call make command: ' + e)
+ except subprocess.CalledProcessError as e:
+ raise ConfigError(e.output)
+
+ def make(self, jobs, build_dir):
+ command = ['make', 'ARCH=um', '--jobs=' + str(jobs)]
+ if build_dir:
+ command += ['O=' + build_dir]
+ try:
+ subprocess.check_output(command)
+ except OSError as e:
+ raise BuildError('Could not call execute make: ' + e)
+ except subprocess.CalledProcessError as e:
+ raise BuildError(e.output)
+
+ def linux_bin(self, params, timeout, build_dir):
+ """Runs the Linux UML binary. Must be named 'linux'."""
+ linux_bin = './linux'
+ if build_dir:
+ linux_bin = os.path.join(build_dir, 'linux')
+ process = subprocess.Popen(
+ [linux_bin] + params,
+ stdin=subprocess.PIPE,
+ stdout=subprocess.PIPE,
+ stderr=subprocess.PIPE)
+ process.wait(timeout=timeout)
+ return process
+
+
+def get_kconfig_path(build_dir):
+ kconfig_path = KCONFIG_PATH
+ if build_dir:
+ kconfig_path = os.path.join(build_dir, KCONFIG_PATH)
+ return kconfig_path
+
+class LinuxSourceTree(object):
+ """Represents a Linux kernel source tree with KUnit tests."""
+
+ def __init__(self):
+ self._kconfig = kunit_config.Kconfig()
+ self._kconfig.read_from_file('kunitconfig')
+ self._ops = LinuxSourceTreeOperations()
+
+ def clean(self):
+ try:
+ self._ops.make_mrproper()
+ except ConfigError as e:
+ logging.error(e)
+ return False
+ return True
+
+ def build_config(self, build_dir):
+ kconfig_path = get_kconfig_path(build_dir)
+ if build_dir and not os.path.exists(build_dir):
+ os.mkdir(build_dir)
+ self._kconfig.write_to_file(kconfig_path)
+ try:
+ self._ops.make_olddefconfig(build_dir)
+ except ConfigError as e:
+ logging.error(e)
+ return False
+ validated_kconfig = kunit_config.Kconfig()
+ validated_kconfig.read_from_file(kconfig_path)
+ if not self._kconfig.is_subset_of(validated_kconfig):
+ logging.error('Provided Kconfig is not contained in validated .config!')
+ return False
+ return True
+
+ def build_reconfig(self, build_dir):
+ """Creates a new .config if it is not a subset of the kunitconfig."""
+ kconfig_path = get_kconfig_path(build_dir)
+ if os.path.exists(kconfig_path):
+ existing_kconfig = kunit_config.Kconfig()
+ existing_kconfig.read_from_file(kconfig_path)
+ if not self._kconfig.is_subset_of(existing_kconfig):
+ print('Regenerating .config ...')
+ os.remove(kconfig_path)
+ return self.build_config(build_dir)
+ else:
+ return True
+ else:
+ print('Generating .config ...')
+ return self.build_config(build_dir)
+
+ def build_um_kernel(self, jobs, build_dir):
+ try:
+ self._ops.make_olddefconfig(build_dir)
+ self._ops.make(jobs, build_dir)
+ except (ConfigError, BuildError) as e:
+ logging.error(e)
+ return False
+ used_kconfig = kunit_config.Kconfig()
+ used_kconfig.read_from_file(get_kconfig_path(build_dir))
+ if not self._kconfig.is_subset_of(used_kconfig):
+ logging.error('Provided Kconfig is not contained in final config!')
+ return False
+ return True
+
+ def run_kernel(self, args=[], timeout=None, build_dir=None):
+ args.extend(['mem=256M'])
+ process = self._ops.linux_bin(args, timeout, build_dir)
+ with open('test.log', 'w') as f:
+ for line in process.stdout:
+ f.write(line.rstrip().decode('ascii') + '\n')
+ yield line.rstrip().decode('ascii')
diff --git a/tools/testing/kunit/kunit_parser.py b/tools/testing/kunit/kunit_parser.py
new file mode 100644
index 0000000000000..f27f3d675c3bb
--- /dev/null
+++ b/tools/testing/kunit/kunit_parser.py
@@ -0,0 +1,290 @@
+# SPDX-License-Identifier: GPL-2.0
+#
+# Parses test results from a kernel dmesg log.
+#
+# Copyright (C) 2019, Google LLC.
+# Author: Felix Guo <felixguoxiuping-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
+# Author: Brendan Higgins <brendanhiggins-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>
+
+import re
+
+from collections import namedtuple
+from datetime import datetime
+from enum import Enum, auto
+from functools import reduce
+from typing import List
+
+TestResult = namedtuple('TestResult', ['status','suites','log'])
+
+class TestSuite(object):
+ def __init__(self):
+ self.status = None
+ self.name = None
+ self.cases = []
+
+ def __str__(self):
+ return 'TestSuite(' + self.status + ',' + self.name + ',' + str(self.cases) + ')'
+
+ def __repr__(self):
+ return str(self)
+
+class TestCase(object):
+ def __init__(self):
+ self.status = None
+ self.name = ''
+ self.log = []
+
+ def __str__(self):
+ return 'TestCase(' + self.status + ',' + self.name + ',' + str(self.log) + ')'
+
+ def __repr__(self):
+ return str(self)
+
+class TestStatus(Enum):
+ SUCCESS = auto()
+ FAILURE = auto()
+ TEST_CRASHED = auto()
+ NO_TESTS = auto()
+
+kunit_start_re = re.compile(r'^TAP version [0-9]+$')
+kunit_end_re = re.compile('List of all partitions:')
+
+def isolate_kunit_output(kernel_output):
+ started = False
+ for line in kernel_output:
+ if kunit_start_re.match(line):
+ started = True
+ yield line
+ elif kunit_end_re.match(line):
+ break
+ elif started:
+ yield line
+
+def raw_output(kernel_output):
+ for line in kernel_output:
+ print(line)
+
+DIVIDER = '=' * 60
+
+RESET = '\033[0;0m'
+
+def red(text):
+ return '\033[1;31m' + text + RESET
+
+def yellow(text):
+ return '\033[1;33m' + text + RESET
+
+def green(text):
+ return '\033[1;32m' + text + RESET
+
+def print_with_timestamp(message):
+ print('[%s] %s' % (datetime.now().strftime('%H:%M:%S'), message))
+
+def format_suite_divider(message):
+ return '======== ' + message + ' ========'
+
+def print_suite_divider(message):
+ print_with_timestamp(DIVIDER)
+ print_with_timestamp(format_suite_divider(message))
+
+def print_log(log):
+ for m in log:
+ print_with_timestamp(m)
+
+TAP_ENTRIES = re.compile(r'^(TAP|\t?ok|\t?not ok|\t?[0-9]+\.\.[0-9]+|\t?#).*$')
+
+def consume_non_diagnositic(lines: List[str]) -> None:
+ while not TAP_ENTRIES.match(lines[0]):
+ lines.pop(0)
+
+def save_non_diagnositic(lines: List[str], test_case: TestCase) -> None:
+ while not TAP_ENTRIES.match(lines[0]):
+ test_case.log.append(lines[0])
+ lines.pop(0)
+
+OkNotOkResult = namedtuple('OkNotOkResult', ['is_ok','description', 'text'])
+
+OK_NOT_OK_SUBTEST = re.compile(r'^\t(ok|not ok) [0-9]+ - (.*)$')
+
+OK_NOT_OK_MODULE = re.compile(r'^(ok|not ok) [0-9]+ - (.*)$')
+
+def parse_ok_not_ok_test_case(lines: List[str], test_case: TestCase) -> bool:
+ save_non_diagnositic(lines, test_case)
+ line = lines[0]
+ match = OK_NOT_OK_SUBTEST.match(line)
+ if match:
+ test_case.log.append(lines.pop(0))
+ test_case.name = match.group(2)
+ if test_case.status == TestStatus.TEST_CRASHED:
+ return True
+ if match.group(1) == 'ok':
+ test_case.status = TestStatus.SUCCESS
+ else:
+ test_case.status = TestStatus.FAILURE
+ return True
+ else:
+ return False
+
+SUBTEST_DIAGNOSTIC = re.compile(r'^\t# .*?: (.*)$')
+DIAGNOSTIC_CRASH_MESSAGE = 'kunit test case crashed!'
+
+def parse_diagnostic(lines: List[str], test_case: TestCase) -> bool:
+ save_non_diagnositic(lines, test_case)
+ line = lines[0]
+ match = SUBTEST_DIAGNOSTIC.match(line)
+ if match:
+ test_case.log.append(lines.pop(0))
+ if match.group(1) == DIAGNOSTIC_CRASH_MESSAGE:
+ test_case.status = TestStatus.TEST_CRASHED
+ return True
+ else:
+ return False
+
+def parse_test_case(lines: List[str]) -> TestCase:
+ test_case = TestCase()
+ save_non_diagnositic(lines, test_case)
+ while parse_diagnostic(lines, test_case):
+ pass
+ if parse_ok_not_ok_test_case(lines, test_case):
+ return test_case
+ else:
+ return None
+
+SUBTEST_HEADER = re.compile(r'^\t# Subtest: (.*)$')
+
+def parse_subtest_header(lines: List[str]) -> str:
+ consume_non_diagnositic(lines)
+ match = SUBTEST_HEADER.match(lines[0])
+ if match:
+ lines.pop(0)
+ return match.group(1)
+ else:
+ return None
+
+SUBTEST_PLAN = re.compile(r'\t[0-9]+\.\.([0-9]+)')
+
+def parse_subtest_plan(lines: List[str]) -> int:
+ consume_non_diagnositic(lines)
+ match = SUBTEST_PLAN.match(lines[0])
+ if match:
+ lines.pop(0)
+ return match.group(1)
+ else:
+ return None
+
+def max_status(left: TestStatus, right: TestStatus) -> TestStatus:
+ if left == TestStatus.TEST_CRASHED or right == TestStatus.TEST_CRASHED:
+ return TestStatus.TEST_CRASHED
+ elif left == TestStatus.FAILURE or right == TestStatus.FAILURE:
+ return TestStatus.FAILURE
+ elif left != TestStatus.SUCCESS:
+ return left
+ elif right != TestStatus.SUCCESS:
+ return right
+ else:
+ return TestStatus.SUCCESS
+
+def parse_ok_not_ok_test_suite(lines: List[str], test_suite: TestSuite) -> bool:
+ consume_non_diagnositic(lines)
+ line = lines[0]
+ match = OK_NOT_OK_MODULE.match(line)
+ if match:
+ lines.pop(0)
+ if match.group(1) == 'ok':
+ test_suite.status = TestStatus.SUCCESS
+ else:
+ test_suite.status = TestStatus.FAILURE
+ return True
+ else:
+ return False
+
+def bubble_up_errors(to_status, status_container_list) -> TestStatus:
+ status_list = map(to_status, status_container_list)
+ return reduce(max_status, status_list, TestStatus.SUCCESS)
+
+def bubble_up_test_case_errors(test_suite: TestSuite) -> TestStatus:
+ max_test_case_status = bubble_up_errors(lambda x: x.status, test_suite.cases)
+ return max_status(max_test_case_status, test_suite.status)
+
+def parse_test_suite(lines: List[str]) -> TestSuite:
+ if not lines:
+ return None
+ consume_non_diagnositic(lines)
+ test_suite = TestSuite()
+ test_suite.status = TestStatus.SUCCESS
+ name = parse_subtest_header(lines)
+ if not name:
+ return None
+ test_suite.name = name
+ test_case_num = parse_subtest_plan(lines)
+ if not test_case_num:
+ return None
+ test_case = parse_test_case(lines)
+ while test_case:
+ test_suite.cases.append(test_case)
+ test_case = parse_test_case(lines)
+ if parse_ok_not_ok_test_suite(lines, test_suite):
+ test_suite.status = bubble_up_test_case_errors(test_suite)
+ return test_suite
+ else:
+ print('failed to parse end of suite' + lines[0])
+ return None
+
+TAP_HEADER = re.compile(r'^TAP version 14$')
+
+def parse_tap_header(lines: List[str]) -> bool:
+ consume_non_diagnositic(lines)
+ if TAP_HEADER.match(lines[0]):
+ lines.pop(0)
+ return True
+ else:
+ return False
+
+def bubble_up_suite_errors(test_suite_list: List[TestSuite]) -> TestStatus:
+ return bubble_up_errors(lambda x: x.status, test_suite_list)
+
+def parse_test_result(lines: List[str]) -> TestResult:
+ if not lines:
+ return TestResult(TestStatus.NO_TESTS, [], lines)
+ consume_non_diagnositic(lines)
+ if not parse_tap_header(lines):
+ return None
+ test_suites = []
+ test_suite = parse_test_suite(lines)
+ while test_suite:
+ test_suites.append(test_suite)
+ test_suite = parse_test_suite(lines)
+ return TestResult(bubble_up_suite_errors(test_suites), test_suites, lines)
+
+def parse_run_tests(kernel_output) -> TestResult:
+ total_tests = 0
+ failed_tests = 0
+ crashed_tests = 0
+ test_result = parse_test_result(list(isolate_kunit_output(kernel_output)))
+ for test_suite in test_result.suites:
+ if test_suite.status == TestStatus.SUCCESS:
+ print_suite_divider(green('[PASSED] ') + test_suite.name)
+ elif test_suite.status == TestStatus.TEST_CRASHED:
+ print_suite_divider(red('[CRASHED] ' + test_suite.name))
+ else:
+ print_suite_divider(red('[FAILED] ') + test_suite.name)
+ for test_case in test_suite.cases:
+ total_tests += 1
+ if test_case.status == TestStatus.SUCCESS:
+ print_with_timestamp(green('[PASSED] ') + test_case.name)
+ elif test_case.status == TestStatus.TEST_CRASHED:
+ crashed_tests += 1
+ print_with_timestamp(red('[CRASHED] ' + test_case.name))
+ print_log(map(yellow, test_case.log))
+ print_with_timestamp('')
+ else:
+ failed_tests += 1
+ print_with_timestamp(red('[FAILED] ') + test_case.name)
+ print_log(map(yellow, test_case.log))
+ print_with_timestamp('')
+ print_with_timestamp(DIVIDER)
+ fmt = green if test_result.status == TestStatus.SUCCESS else red
+ print_with_timestamp(
+ fmt('Testing complete. %d tests run. %d failed. %d crashed.' %
+ (total_tests, failed_tests, crashed_tests)))
+ return test_result
diff --git a/tools/testing/kunit/kunit_tool_test.py b/tools/testing/kunit/kunit_tool_test.py
new file mode 100755
index 0000000000000..4a12baa0cd4e0
--- /dev/null
+++ b/tools/testing/kunit/kunit_tool_test.py
@@ -0,0 +1,206 @@
+#!/usr/bin/python3
+# SPDX-License-Identifier: GPL-2.0
+#
+# A collection of tests for tools/testing/kunit/kunit.py
+#
+# Copyright (C) 2019, Google LLC.
+# Author: Brendan Higgins <brendanhiggins-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>
+
+import unittest
+from unittest import mock
+
+import tempfile, shutil # Handling test_tmpdir
+
+import os
+
+import kunit_config
+import kunit_parser
+import kunit_kernel
+import kunit
+
+test_tmpdir = ''
+
+def setUpModule():
+ global test_tmpdir
+ test_tmpdir = tempfile.mkdtemp()
+
+def tearDownModule():
+ shutil.rmtree(test_tmpdir)
+
+def get_absolute_path(path):
+ return os.path.join(os.path.dirname(__file__), path)
+
+class KconfigTest(unittest.TestCase):
+
+ def test_is_subset_of(self):
+ kconfig0 = kunit_config.Kconfig()
+ self.assertTrue(kconfig0.is_subset_of(kconfig0))
+
+ kconfig1 = kunit_config.Kconfig()
+ kconfig1.add_entry(kunit_config.KconfigEntry('CONFIG_TEST=y'))
+ self.assertTrue(kconfig1.is_subset_of(kconfig1))
+ self.assertTrue(kconfig0.is_subset_of(kconfig1))
+ self.assertFalse(kconfig1.is_subset_of(kconfig0))
+
+ def test_read_from_file(self):
+ kconfig = kunit_config.Kconfig()
+ kconfig_path = get_absolute_path(
+ 'test_data/test_read_from_file.kconfig')
+
+ kconfig.read_from_file(kconfig_path)
+
+ expected_kconfig = kunit_config.Kconfig()
+ expected_kconfig.add_entry(
+ kunit_config.KconfigEntry('CONFIG_UML=y'))
+ expected_kconfig.add_entry(
+ kunit_config.KconfigEntry('CONFIG_MMU=y'))
+ expected_kconfig.add_entry(
+ kunit_config.KconfigEntry('CONFIG_TEST=y'))
+ expected_kconfig.add_entry(
+ kunit_config.KconfigEntry('CONFIG_EXAMPLE_TEST=y'))
+ expected_kconfig.add_entry(
+ kunit_config.KconfigEntry('# CONFIG_MK8 is not set'))
+
+ self.assertEqual(kconfig.entries(), expected_kconfig.entries())
+
+ def test_write_to_file(self):
+ kconfig_path = os.path.join(test_tmpdir, '.config')
+
+ expected_kconfig = kunit_config.Kconfig()
+ expected_kconfig.add_entry(
+ kunit_config.KconfigEntry('CONFIG_UML=y'))
+ expected_kconfig.add_entry(
+ kunit_config.KconfigEntry('CONFIG_MMU=y'))
+ expected_kconfig.add_entry(
+ kunit_config.KconfigEntry('CONFIG_TEST=y'))
+ expected_kconfig.add_entry(
+ kunit_config.KconfigEntry('CONFIG_EXAMPLE_TEST=y'))
+ expected_kconfig.add_entry(
+ kunit_config.KconfigEntry('# CONFIG_MK8 is not set'))
+
+ expected_kconfig.write_to_file(kconfig_path)
+
+ actual_kconfig = kunit_config.Kconfig()
+ actual_kconfig.read_from_file(kconfig_path)
+
+ self.assertEqual(actual_kconfig.entries(),
+ expected_kconfig.entries())
+
+class KUnitParserTest(unittest.TestCase):
+
+ def assertContains(self, needle, haystack):
+ for line in haystack:
+ if needle in line:
+ return
+ raise AssertionError('"' +
+ str(needle) + '" not found in "' + str(haystack) + '"!')
+
+ def test_output_isolated_correctly(self):
+ log_path = get_absolute_path(
+ 'test_data/test_output_isolated_correctly.log')
+ file = open(log_path)
+ result = kunit_parser.isolate_kunit_output(file.readlines())
+ self.assertContains('TAP version 14\n', result)
+ self.assertContains(' # Subtest: example', result)
+ self.assertContains(' 1..2', result)
+ self.assertContains(' ok 1 - example_simple_test', result)
+ self.assertContains(' ok 2 - example_mock_test', result)
+ self.assertContains('ok 1 - example', result)
+ file.close()
+
+ def test_parse_successful_test_log(self):
+ all_passed_log = get_absolute_path(
+ 'test_data/test_is_test_passed-all_passed.log')
+ file = open(all_passed_log)
+ result = kunit_parser.parse_run_tests(file.readlines())
+ self.assertEqual(
+ kunit_parser.TestStatus.SUCCESS,
+ result.status)
+ file.close()
+
+ def test_parse_failed_test_log(self):
+ failed_log = get_absolute_path(
+ 'test_data/test_is_test_passed-failure.log')
+ file = open(failed_log)
+ result = kunit_parser.parse_run_tests(file.readlines())
+ self.assertEqual(
+ kunit_parser.TestStatus.FAILURE,
+ result.status)
+ file.close()
+
+ def test_no_tests(self):
+ empty_log = get_absolute_path(
+ 'test_data/test_is_test_passed-no_tests_run.log')
+ file = open(empty_log)
+ result = kunit_parser.parse_run_tests(
+ kunit_parser.isolate_kunit_output(file.readlines()))
+ self.assertEqual(0, len(result.suites))
+ self.assertEqual(
+ kunit_parser.TestStatus.NO_TESTS,
+ result.status)
+ file.close()
+
+ def test_crashed_test(self):
+ crashed_log = get_absolute_path(
+ 'test_data/test_is_test_passed-crash.log')
+ file = open(crashed_log)
+ result = kunit_parser.parse_run_tests(file.readlines())
+ self.assertEqual(
+ kunit_parser.TestStatus.TEST_CRASHED,
+ result.status)
+ file.close()
+
+class StrContains(str):
+ def __eq__(self, other):
+ return self in other
+
+class KUnitMainTest(unittest.TestCase):
+ def setUp(self):
+ path = get_absolute_path('test_data/test_is_test_passed-all_passed.log')
+ file = open(path)
+ all_passed_log = file.readlines()
+ self.print_patch = mock.patch('builtins.print')
+ self.print_mock = self.print_patch.start()
+ self.linux_source_mock = mock.Mock()
+ self.linux_source_mock.build_reconfig = mock.Mock(return_value=True)
+ self.linux_source_mock.build_um_kernel = mock.Mock(return_value=True)
+ self.linux_source_mock.run_kernel = mock.Mock(return_value=all_passed_log)
+
+ def tearDown(self):
+ self.print_patch.stop()
+ pass
+
+ def test_run_passes_args_pass(self):
+ kunit.main(['run'], self.linux_source_mock)
+ assert self.linux_source_mock.build_reconfig.call_count == 1
+ assert self.linux_source_mock.run_kernel.call_count == 1
+ self.print_mock.assert_any_call(StrContains('Testing complete.'))
+
+ def test_run_passes_args_fail(self):
+ self.linux_source_mock.run_kernel = mock.Mock(return_value=[])
+ with self.assertRaises(SystemExit) as e:
+ kunit.main(['run'], self.linux_source_mock)
+ assert type(e.exception) == SystemExit
+ assert e.exception.code == 1
+ assert self.linux_source_mock.build_reconfig.call_count == 1
+ assert self.linux_source_mock.run_kernel.call_count == 1
+ self.print_mock.assert_any_call(StrContains(' 0 tests run'))
+
+ def test_run_raw_output(self):
+ self.linux_source_mock.run_kernel = mock.Mock(return_value=[])
+ kunit.main(['run', '--raw_output'], self.linux_source_mock)
+ assert self.linux_source_mock.build_reconfig.call_count == 1
+ assert self.linux_source_mock.run_kernel.call_count == 1
+ for kall in self.print_mock.call_args_list:
+ assert kall != mock.call(StrContains('Testing complete.'))
+ assert kall != mock.call(StrContains(' 0 tests run'))
+
+ def test_run_timeout(self):
+ timeout = 3453
+ kunit.main(['run', '--timeout', str(timeout)], self.linux_source_mock)
+ assert self.linux_source_mock.build_reconfig.call_count == 1
+ self.linux_source_mock.run_kernel.assert_called_once_with(timeout=timeout)
+ self.print_mock.assert_any_call(StrContains('Testing complete.'))
+
+if __name__ == '__main__':
+ unittest.main()
diff --git a/tools/testing/kunit/test_data/test_is_test_passed-all_passed.log b/tools/testing/kunit/test_data/test_is_test_passed-all_passed.log
new file mode 100644
index 0000000000000..62ebc0288355c
--- /dev/null
+++ b/tools/testing/kunit/test_data/test_is_test_passed-all_passed.log
@@ -0,0 +1,32 @@
+TAP version 14
+ # Subtest: sysctl_test
+ 1..8
+ # sysctl_test_dointvec_null_tbl_data: sysctl_test_dointvec_null_tbl_data passed
+ ok 1 - sysctl_test_dointvec_null_tbl_data
+ # sysctl_test_dointvec_table_maxlen_unset: sysctl_test_dointvec_table_maxlen_unset passed
+ ok 2 - sysctl_test_dointvec_table_maxlen_unset
+ # sysctl_test_dointvec_table_len_is_zero: sysctl_test_dointvec_table_len_is_zero passed
+ ok 3 - sysctl_test_dointvec_table_len_is_zero
+ # sysctl_test_dointvec_table_read_but_position_set: sysctl_test_dointvec_table_read_but_position_set passed
+ ok 4 - sysctl_test_dointvec_table_read_but_position_set
+ # sysctl_test_dointvec_happy_single_positive: sysctl_test_dointvec_happy_single_positive passed
+ ok 5 - sysctl_test_dointvec_happy_single_positive
+ # sysctl_test_dointvec_happy_single_negative: sysctl_test_dointvec_happy_single_negative passed
+ ok 6 - sysctl_test_dointvec_happy_single_negative
+ # sysctl_test_dointvec_single_less_int_min: sysctl_test_dointvec_single_less_int_min passed
+ ok 7 - sysctl_test_dointvec_single_less_int_min
+ # sysctl_test_dointvec_single_greater_int_max: sysctl_test_dointvec_single_greater_int_max passed
+ ok 8 - sysctl_test_dointvec_single_greater_int_max
+kunit sysctl_test: all tests passed
+ok 1 - sysctl_test
+ # Subtest: example
+ 1..2
+init_suite
+ # example_simple_test: initializing
+ # example_simple_test: example_simple_test passed
+ ok 1 - example_simple_test
+ # example_mock_test: initializing
+ # example_mock_test: example_mock_test passed
+ ok 2 - example_mock_test
+kunit example: all tests passed
+ok 2 - example
diff --git a/tools/testing/kunit/test_data/test_is_test_passed-crash.log b/tools/testing/kunit/test_data/test_is_test_passed-crash.log
new file mode 100644
index 0000000000000..0b249870c8be4
--- /dev/null
+++ b/tools/testing/kunit/test_data/test_is_test_passed-crash.log
@@ -0,0 +1,69 @@
+printk: console [tty0] enabled
+printk: console [mc-1] enabled
+TAP version 14
+ # Subtest: sysctl_test
+ 1..8
+ # sysctl_test_dointvec_null_tbl_data: sysctl_test_dointvec_null_tbl_data passed
+ ok 1 - sysctl_test_dointvec_null_tbl_data
+ # sysctl_test_dointvec_table_maxlen_unset: sysctl_test_dointvec_table_maxlen_unset passed
+ ok 2 - sysctl_test_dointvec_table_maxlen_unset
+ # sysctl_test_dointvec_table_len_is_zero: sysctl_test_dointvec_table_len_is_zero passed
+ ok 3 - sysctl_test_dointvec_table_len_is_zero
+ # sysctl_test_dointvec_table_read_but_position_set: sysctl_test_dointvec_table_read_but_position_set passed
+ ok 4 - sysctl_test_dointvec_table_read_but_position_set
+ # sysctl_test_dointvec_happy_single_positive: sysctl_test_dointvec_happy_single_positive passed
+ ok 5 - sysctl_test_dointvec_happy_single_positive
+ # sysctl_test_dointvec_happy_single_negative: sysctl_test_dointvec_happy_single_negative passed
+ ok 6 - sysctl_test_dointvec_happy_single_negative
+ # sysctl_test_dointvec_single_less_int_min: sysctl_test_dointvec_single_less_int_min passed
+ ok 7 - sysctl_test_dointvec_single_less_int_min
+ # sysctl_test_dointvec_single_greater_int_max: sysctl_test_dointvec_single_greater_int_max passed
+ ok 8 - sysctl_test_dointvec_single_greater_int_max
+kunit sysctl_test: all tests passed
+ok 1 - sysctl_test
+ # Subtest: example
+ 1..2
+init_suite
+ # example_simple_test: initializing
+Stack:
+ 6016f7db 6f81bd30 6f81bdd0 60021450
+ 6024b0e8 60021440 60018bbe 16f81bdc0
+ 00000001 6f81bd30 6f81bd20 6f81bdd0
+Call Trace:
+ [<6016f7db>] ? kunit_try_run_case+0xab/0xf0
+ [<60021450>] ? set_signals+0x0/0x60
+ [<60021440>] ? get_signals+0x0/0x10
+ [<60018bbe>] ? kunit_um_run_try_catch+0x5e/0xc0
+ [<60021450>] ? set_signals+0x0/0x60
+ [<60021440>] ? get_signals+0x0/0x10
+ [<60018bb3>] ? kunit_um_run_try_catch+0x53/0xc0
+ [<6016f321>] ? kunit_run_case_catch_errors+0x121/0x1a0
+ [<60018b60>] ? kunit_um_run_try_catch+0x0/0xc0
+ [<600189e0>] ? kunit_um_throw+0x0/0x180
+ [<6016f730>] ? kunit_try_run_case+0x0/0xf0
+ [<6016f600>] ? kunit_catch_run_case+0x0/0x130
+ [<6016edd0>] ? kunit_vprintk+0x0/0x30
+ [<6016ece0>] ? kunit_fail+0x0/0x40
+ [<6016eca0>] ? kunit_abort+0x0/0x40
+ [<6016ed20>] ? kunit_printk_emit+0x0/0xb0
+ [<6016f200>] ? kunit_run_case_catch_errors+0x0/0x1a0
+ [<6016f46e>] ? kunit_run_tests+0xce/0x260
+ [<6005b390>] ? unregister_console+0x0/0x190
+ [<60175b70>] ? suite_kunit_initexample_test_suite+0x0/0x20
+ [<60001cbb>] ? do_one_initcall+0x0/0x197
+ [<60001d47>] ? do_one_initcall+0x8c/0x197
+ [<6005cd20>] ? irq_to_desc+0x0/0x30
+ [<60002005>] ? kernel_init_freeable+0x1b3/0x272
+ [<6005c5ec>] ? printk+0x0/0x9b
+ [<601c0086>] ? kernel_init+0x26/0x160
+ [<60014442>] ? new_thread_handler+0x82/0xc0
+
+ # example_simple_test: kunit test case crashed!
+ # example_simple_test: example_simple_test failed
+ not ok 1 - example_simple_test
+ # example_mock_test: initializing
+ # example_mock_test: example_mock_test passed
+ ok 2 - example_mock_test
+kunit example: one or more tests failed
+not ok 2 - example
+List of all partitions:
diff --git a/tools/testing/kunit/test_data/test_is_test_passed-failure.log b/tools/testing/kunit/test_data/test_is_test_passed-failure.log
new file mode 100644
index 0000000000000..2ed870b6de72f
--- /dev/null
+++ b/tools/testing/kunit/test_data/test_is_test_passed-failure.log
@@ -0,0 +1,36 @@
+TAP version 14
+ # Subtest: sysctl_test
+ 1..8
+ # sysctl_test_dointvec_null_tbl_data: sysctl_test_dointvec_null_tbl_data passed
+ ok 1 - sysctl_test_dointvec_null_tbl_data
+ # sysctl_test_dointvec_table_maxlen_unset: sysctl_test_dointvec_table_maxlen_unset passed
+ ok 2 - sysctl_test_dointvec_table_maxlen_unset
+ # sysctl_test_dointvec_table_len_is_zero: sysctl_test_dointvec_table_len_is_zero passed
+ ok 3 - sysctl_test_dointvec_table_len_is_zero
+ # sysctl_test_dointvec_table_read_but_position_set: sysctl_test_dointvec_table_read_but_position_set passed
+ ok 4 - sysctl_test_dointvec_table_read_but_position_set
+ # sysctl_test_dointvec_happy_single_positive: sysctl_test_dointvec_happy_single_positive passed
+ ok 5 - sysctl_test_dointvec_happy_single_positive
+ # sysctl_test_dointvec_happy_single_negative: sysctl_test_dointvec_happy_single_negative passed
+ ok 6 - sysctl_test_dointvec_happy_single_negative
+ # sysctl_test_dointvec_single_less_int_min: sysctl_test_dointvec_single_less_int_min passed
+ ok 7 - sysctl_test_dointvec_single_less_int_min
+ # sysctl_test_dointvec_single_greater_int_max: sysctl_test_dointvec_single_greater_int_max passed
+ ok 8 - sysctl_test_dointvec_single_greater_int_max
+kunit sysctl_test: all tests passed
+ok 1 - sysctl_test
+ # Subtest: example
+ 1..2
+init_suite
+ # example_simple_test: initializing
+ # example_simple_test: EXPECTATION FAILED at kunit/example-test.c:30
+ Expected 1 + 1 == 3, but
+ 1 + 1 == 2
+ 3 == 3
+ # example_simple_test: example_simple_test failed
+ not ok 1 - example_simple_test
+ # example_mock_test: initializing
+ # example_mock_test: example_mock_test passed
+ ok 2 - example_mock_test
+kunit example: one or more tests failed
+not ok 2 - example
diff --git a/tools/testing/kunit/test_data/test_is_test_passed-no_tests_run.log b/tools/testing/kunit/test_data/test_is_test_passed-no_tests_run.log
new file mode 100644
index 0000000000000..ba69f5c94b75f
--- /dev/null
+++ b/tools/testing/kunit/test_data/test_is_test_passed-no_tests_run.log
@@ -0,0 +1,75 @@
+Core dump limits :
+ soft - 0
+ hard - NONE
+Checking environment variables for a tempdir...none found
+Checking if /dev/shm is on tmpfs...OK
+Checking PROT_EXEC mmap in /dev/shm...OK
+Adding 24743936 bytes to physical memory to account for exec-shield gap
+Linux version 4.12.0-rc3-00010-g7319eb35f493-dirty (brendanhiggins-woRtfX0xupevss2yl3NHrPyj43VRqXoZVpNB7YpNyf8@public.gmane.org) (gcc version 7.3.0 (Debian 7.3.0-5) ) #29 Thu Mar 15 14:57:19 PDT 2018
+Built 1 zonelists in Zone order, mobility grouping on. Total pages: 14038
+Kernel command line: root=98:0
+PID hash table entries: 256 (order: -1, 2048 bytes)
+Dentry cache hash table entries: 8192 (order: 4, 65536 bytes)
+Inode-cache hash table entries: 4096 (order: 3, 32768 bytes)
+Memory: 27868K/56932K available (1681K kernel code, 480K rwdata, 400K rodata, 89K init, 205K bss, 29064K reserved, 0K cma-reserved)
+SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
+NR_IRQS:15
+clocksource: timer: mask: 0xffffffffffffffff max_cycles: 0x1cd42e205, max_idle_ns: 881590404426 ns
+Calibrating delay loop... 7384.26 BogoMIPS (lpj=36921344)
+pid_max: default: 32768 minimum: 301
+Mount-cache hash table entries: 512 (order: 0, 4096 bytes)
+Mountpoint-cache hash table entries: 512 (order: 0, 4096 bytes)
+Checking that host ptys support output SIGIO...Yes
+Checking that host ptys support SIGIO on close...No, enabling workaround
+Using 2.6 host AIO
+clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
+futex hash table entries: 256 (order: 0, 6144 bytes)
+clocksource: Switched to clocksource timer
+console [stderr0] disabled
+mconsole (version 2) initialized on /usr/local/google/home/brendanhiggins/.uml/6Ijecl/mconsole
+Checking host MADV_REMOVE support...OK
+workingset: timestamp_bits=62 max_order=13 bucket_order=0
+Block layer SCSI generic (bsg) driver version 0.4 loaded (major 254)
+io scheduler noop registered
+io scheduler deadline registered
+io scheduler cfq registered (default)
+io scheduler mq-deadline registered
+io scheduler kyber registered
+Initialized stdio console driver
+Using a channel type which is configured out of UML
+setup_one_line failed for device 1 : Configuration failed
+Using a channel type which is configured out of UML
+setup_one_line failed for device 2 : Configuration failed
+Using a channel type which is configured out of UML
+setup_one_line failed for device 3 : Configuration failed
+Using a channel type which is configured out of UML
+setup_one_line failed for device 4 : Configuration failed
+Using a channel type which is configured out of UML
+setup_one_line failed for device 5 : Configuration failed
+Using a channel type which is configured out of UML
+setup_one_line failed for device 6 : Configuration failed
+Using a channel type which is configured out of UML
+setup_one_line failed for device 7 : Configuration failed
+Using a channel type which is configured out of UML
+setup_one_line failed for device 8 : Configuration failed
+Using a channel type which is configured out of UML
+setup_one_line failed for device 9 : Configuration failed
+Using a channel type which is configured out of UML
+setup_one_line failed for device 10 : Configuration failed
+Using a channel type which is configured out of UML
+setup_one_line failed for device 11 : Configuration failed
+Using a channel type which is configured out of UML
+setup_one_line failed for device 12 : Configuration failed
+Using a channel type which is configured out of UML
+setup_one_line failed for device 13 : Configuration failed
+Using a channel type which is configured out of UML
+setup_one_line failed for device 14 : Configuration failed
+Using a channel type which is configured out of UML
+setup_one_line failed for device 15 : Configuration failed
+Console initialized on /dev/tty0
+console [tty0] enabled
+console [mc-1] enabled
+List of all partitions:
+No filesystem could mount root, tried:
+
+Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(98,0)
diff --git a/tools/testing/kunit/test_data/test_output_isolated_correctly.log b/tools/testing/kunit/test_data/test_output_isolated_correctly.log
new file mode 100644
index 0000000000000..94a6b3aeaa922
--- /dev/null
+++ b/tools/testing/kunit/test_data/test_output_isolated_correctly.log
@@ -0,0 +1,106 @@
+Linux version 5.1.0-rc7-00061-g04652f1cb4aa0 (brendanhiggins-woRtfX0xupevss2yl3NHrPyj43VRqXoZVpNB7YpNyf8@public.gmane.org) (gcc version 7.3.0 (Debian 7.3.0-18)) #163 Wed May 8 16:18:20 PDT 2019
+Built 1 zonelists, mobility grouping on. Total pages: 69906
+Kernel command line: mem=256M root=98:0
+Dentry cache hash table entries: 65536 (order: 7, 524288 bytes)
+Inode-cache hash table entries: 32768 (order: 6, 262144 bytes)
+Memory: 254468K/283500K available (1734K kernel code, 489K rwdata, 396K rodata, 85K init, 216K bss, 29032K reserved, 0K cma-reserved)
+SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
+NR_IRQS: 15
+clocksource: timer: mask: 0xffffffffffffffff max_cycles: 0x1cd42e205, max_idle_ns: 881590404426 ns
+------------[ cut here ]------------
+WARNING: CPU: 0 PID: 0 at kernel/time/clockevents.c:458 clockevents_register_device+0x143/0x160
+posix-timer cpumask == cpu_all_mask, using cpu_possible_mask instead
+CPU: 0 PID: 0 Comm: swapper Not tainted 5.1.0-rc7-00061-g04652f1cb4aa0 #163
+Stack:
+ 6005cc00 60233e18 60233e60 60233e18
+ 60233e60 00000009 00000000 6002a1b4
+ 1ca00000000 60071c23 60233e78 100000000000062
+Call Trace:
+ [<600214c5>] ? os_is_signal_stack+0x15/0x30
+ [<6005c5ec>] ? printk+0x0/0x9b
+ [<6001597e>] ? show_stack+0xbe/0x1c0
+ [<6005cc00>] ? __printk_safe_exit+0x0/0x40
+ [<6002a1b4>] ? __warn+0x144/0x170
+ [<60071c23>] ? clockevents_register_device+0x143/0x160
+ [<60021440>] ? get_signals+0x0/0x10
+ [<6005c5ec>] ? printk+0x0/0x9b
+ [<6002a27b>] ? warn_slowpath_fmt+0x9b/0xb0
+ [<6005c5ec>] ? printk+0x0/0x9b
+ [<6002a1e0>] ? warn_slowpath_fmt+0x0/0xb0
+ [<6005c5ec>] ? printk+0x0/0x9b
+ [<60021440>] ? get_signals+0x0/0x10
+ [<600213f0>] ? block_signals+0x0/0x20
+ [<60071c23>] ? clockevents_register_device+0x143/0x160
+ [<60021440>] ? get_signals+0x0/0x10
+ [<600213f0>] ? block_signals+0x0/0x20
+ [<6005c5ec>] ? printk+0x0/0x9b
+ [<60001bc8>] ? start_kernel+0x477/0x56a
+ [<600036f1>] ? start_kernel_proc+0x46/0x4d
+ [<60014442>] ? new_thread_handler+0x82/0xc0
+
+random: get_random_bytes called from print_oops_end_marker+0x4c/0x60 with crng_init=0
+---[ end trace c83434852b3702d3 ]---
+Calibrating delay loop... 6958.28 BogoMIPS (lpj=34791424)
+pid_max: default: 32768 minimum: 301
+Mount-cache hash table entries: 1024 (order: 1, 8192 bytes)
+Mountpoint-cache hash table entries: 1024 (order: 1, 8192 bytes)
+*** VALIDATE proc ***
+Checking that host ptys support output SIGIO...Yes
+Checking that host ptys support SIGIO on close...No, enabling workaround
+clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
+futex hash table entries: 256 (order: 0, 6144 bytes)
+clocksource: Switched to clocksource timer
+printk: console [stderr0] disabled
+mconsole (version 2) initialized on /usr/local/google/home/brendanhiggins/.uml/VZ2qMm/mconsole
+Checking host MADV_REMOVE support...OK
+workingset: timestamp_bits=62 max_order=16 bucket_order=0
+Block layer SCSI generic (bsg) driver version 0.4 loaded (major 254)
+io scheduler mq-deadline registered
+io scheduler kyber registered
+Initialized stdio console driver
+Using a channel type which is configured out of UML
+setup_one_line failed for device 1 : Configuration failed
+Using a channel type which is configured out of UML
+setup_one_line failed for device 2 : Configuration failed
+Using a channel type which is configured out of UML
+setup_one_line failed for device 3 : Configuration failed
+Using a channel type which is configured out of UML
+setup_one_line failed for device 4 : Configuration failed
+Using a channel type which is configured out of UML
+setup_one_line failed for device 5 : Configuration failed
+Using a channel type which is configured out of UML
+setup_one_line failed for device 6 : Configuration failed
+Using a channel type which is configured out of UML
+setup_one_line failed for device 7 : Configuration failed
+Using a channel type which is configured out of UML
+setup_one_line failed for device 8 : Configuration failed
+Using a channel type which is configured out of UML
+setup_one_line failed for device 9 : Configuration failed
+Using a channel type which is configured out of UML
+setup_one_line failed for device 10 : Configuration failed
+Using a channel type which is configured out of UML
+setup_one_line failed for device 11 : Configuration failed
+Using a channel type which is configured out of UML
+setup_one_line failed for device 12 : Configuration failed
+Using a channel type which is configured out of UML
+setup_one_line failed for device 13 : Configuration failed
+Using a channel type which is configured out of UML
+setup_one_line failed for device 14 : Configuration failed
+Using a channel type which is configured out of UML
+setup_one_line failed for device 15 : Configuration failed
+Console initialized on /dev/tty0
+printk: console [tty0] enabled
+printk: console [mc-1] enabled
+TAP version 14
+ # Subtest: example
+ 1..2
+init_suite
+ # example_simple_test: initializing
+ # example_simple_test: example_simple_test passed
+ ok 1 - example_simple_test
+ # example_mock_test: initializing
+ # example_mock_test: example_mock_test passed
+ ok 2 - example_mock_test
+kunit example: all tests passed
+ok 1 - example
+List of all partitions:
diff --git a/tools/testing/kunit/test_data/test_read_from_file.kconfig b/tools/testing/kunit/test_data/test_read_from_file.kconfig
new file mode 100644
index 0000000000000..d2a4928ac773b
--- /dev/null
+++ b/tools/testing/kunit/test_data/test_read_from_file.kconfig
@@ -0,0 +1,17 @@
+#
+# Automatically generated file; DO NOT EDIT.
+# User Mode Linux/x86 4.12.0-rc3 Kernel Configuration
+#
+CONFIG_UML=y
+CONFIG_MMU=y
+
+#
+# UML-specific options
+#
+
+#
+# Host processor type and features
+#
+# CONFIG_MK8 is not set
+CONFIG_TEST=y
+CONFIG_EXAMPLE_TEST=y
--
2.22.0.410.gd8fdbe21b5-goog
^ permalink raw reply related
* [PATCH v7 12/18] kunit: test: add tests for KUnit managed resources
From: Brendan Higgins @ 2019-07-09 6:30 UTC (permalink / raw)
To: frowand.list, gregkh, jpoimboe, keescook, kieran.bingham, mcgrof,
peterz, robh, sboyd, shuah, tytso, yamada.masahiro
Cc: devicetree, dri-devel, kunit-dev, linux-doc, linux-fsdevel,
linux-kbuild, linux-kernel, linux-kselftest, linux-nvdimm,
linux-um, Alexander.Levin, Tim.Bird, amir73il, dan.carpenter,
daniel, jdike, joel, julia.lawall, khilman, knut.omang, logang,
mpe, pmladek, rdunlap, richard, rientjes, rostedt, wfg,
Avinash Kondareddy, Brendan Higgins
In-Reply-To: <20190709063023.251446-1-brendanhiggins@google.com>
From: Avinash Kondareddy <akndr41@gmail.com>
Add unit tests for KUnit managed resources. KUnit managed resources
(struct kunit_resource) are resources that are automatically cleaned up
at the end of a KUnit test, similar to the concept of devm_* managed
resources.
Signed-off-by: Avinash Kondareddy <akndr41@gmail.com>
Signed-off-by: Brendan Higgins <brendanhiggins@google.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Logan Gunthorpe <logang@deltatee.com>
---
kunit/test-test.c | 219 ++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 219 insertions(+)
diff --git a/kunit/test-test.c b/kunit/test-test.c
index 058f3fb37458a..b044659fe868b 100644
--- a/kunit/test-test.c
+++ b/kunit/test-test.c
@@ -101,3 +101,222 @@ static struct kunit_suite kunit_try_catch_test_suite = {
.test_cases = kunit_try_catch_test_cases,
};
kunit_test_suite(kunit_try_catch_test_suite);
+
+/*
+ * Context for testing test managed resources
+ * is_resource_initialized is used to test arbitrary resources
+ */
+struct kunit_test_resource_context {
+ struct kunit test;
+ bool is_resource_initialized;
+ int allocate_order[2];
+ int free_order[2];
+};
+
+static int fake_resource_init(struct kunit_resource *res, void *context)
+{
+ struct kunit_test_resource_context *ctx = context;
+
+ res->allocation = &ctx->is_resource_initialized;
+ ctx->is_resource_initialized = true;
+ return 0;
+}
+
+static void fake_resource_free(struct kunit_resource *res)
+{
+ bool *is_resource_initialized = res->allocation;
+
+ *is_resource_initialized = false;
+}
+
+static void kunit_resource_test_init_resources(struct kunit *test)
+{
+ struct kunit_test_resource_context *ctx = test->priv;
+
+ kunit_init_test(&ctx->test, "testing_test_init_test");
+
+ KUNIT_EXPECT_TRUE(test, list_empty(&ctx->test.resources));
+}
+
+static void kunit_resource_test_alloc_resource(struct kunit *test)
+{
+ struct kunit_test_resource_context *ctx = test->priv;
+ struct kunit_resource *res;
+ kunit_resource_free_t free = fake_resource_free;
+
+ res = kunit_alloc_resource(&ctx->test,
+ fake_resource_init,
+ fake_resource_free,
+ ctx);
+
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, res);
+ KUNIT_EXPECT_PTR_EQ(test,
+ &ctx->is_resource_initialized,
+ (bool *) res->allocation);
+ KUNIT_EXPECT_TRUE(test, list_is_last(&res->node, &ctx->test.resources));
+ KUNIT_EXPECT_PTR_EQ(test, free, res->free);
+}
+
+static void kunit_resource_test_free_resource(struct kunit *test)
+{
+ struct kunit_test_resource_context *ctx = test->priv;
+ struct kunit_resource *res = kunit_alloc_resource(&ctx->test,
+ fake_resource_init,
+ fake_resource_free,
+ ctx);
+
+ kunit_free_resource(&ctx->test, res);
+
+ KUNIT_EXPECT_FALSE(test, ctx->is_resource_initialized);
+ KUNIT_EXPECT_TRUE(test, list_empty(&ctx->test.resources));
+}
+
+static void kunit_resource_test_cleanup_resources(struct kunit *test)
+{
+ int i;
+ struct kunit_test_resource_context *ctx = test->priv;
+ struct kunit_resource *resources[5];
+
+ for (i = 0; i < ARRAY_SIZE(resources); i++) {
+ resources[i] = kunit_alloc_resource(&ctx->test,
+ fake_resource_init,
+ fake_resource_free,
+ ctx);
+ }
+
+ kunit_cleanup(&ctx->test);
+
+ KUNIT_EXPECT_TRUE(test, list_empty(&ctx->test.resources));
+}
+
+static void kunit_resource_test_mark_order(int order_array[],
+ size_t order_size,
+ int key)
+{
+ int i;
+
+ for (i = 0; i < order_size && order_array[i]; i++)
+ ;
+
+ order_array[i] = key;
+}
+
+#define KUNIT_RESOURCE_TEST_MARK_ORDER(ctx, order_field, key) \
+ kunit_resource_test_mark_order(ctx->order_field, \
+ ARRAY_SIZE(ctx->order_field), \
+ key)
+
+static int fake_resource_2_init(struct kunit_resource *res, void *context)
+{
+ struct kunit_test_resource_context *ctx = context;
+
+ KUNIT_RESOURCE_TEST_MARK_ORDER(ctx, allocate_order, 2);
+
+ res->allocation = ctx;
+
+ return 0;
+}
+
+static void fake_resource_2_free(struct kunit_resource *res)
+{
+ struct kunit_test_resource_context *ctx = res->allocation;
+
+ KUNIT_RESOURCE_TEST_MARK_ORDER(ctx, free_order, 2);
+}
+
+static int fake_resource_1_init(struct kunit_resource *res, void *context)
+{
+ struct kunit_test_resource_context *ctx = context;
+
+ kunit_alloc_resource(&ctx->test,
+ fake_resource_2_init,
+ fake_resource_2_free,
+ ctx);
+
+ KUNIT_RESOURCE_TEST_MARK_ORDER(ctx, allocate_order, 1);
+
+ res->allocation = ctx;
+
+ return 0;
+}
+
+static void fake_resource_1_free(struct kunit_resource *res)
+{
+ struct kunit_test_resource_context *ctx = res->allocation;
+
+ KUNIT_RESOURCE_TEST_MARK_ORDER(ctx, free_order, 1);
+}
+
+/*
+ * TODO(brendanhiggins@google.com): replace the arrays that keep track of the
+ * order of allocation and freeing with strict mocks using the IN_SEQUENCE macro
+ * to assert allocation and freeing order when the feature becomes available.
+ */
+static void kunit_resource_test_proper_free_ordering(struct kunit *test)
+{
+ struct kunit_test_resource_context *ctx = test->priv;
+
+ /* fake_resource_1 allocates a fake_resource_2 in its init. */
+ kunit_alloc_resource(&ctx->test,
+ fake_resource_1_init,
+ fake_resource_1_free,
+ ctx);
+
+ /*
+ * Since fake_resource_2_init calls KUNIT_RESOURCE_TEST_MARK_ORDER
+ * before returning to fake_resource_1_init, it should be the first to
+ * put its key in the allocate_order array.
+ */
+ KUNIT_EXPECT_EQ(test, ctx->allocate_order[0], 2);
+ KUNIT_EXPECT_EQ(test, ctx->allocate_order[1], 1);
+
+ kunit_cleanup(&ctx->test);
+
+ /*
+ * Because fake_resource_2 finishes allocation before fake_resource_1,
+ * fake_resource_1 should be freed first since it could depend on
+ * fake_resource_2.
+ */
+ KUNIT_EXPECT_EQ(test, ctx->free_order[0], 1);
+ KUNIT_EXPECT_EQ(test, ctx->free_order[1], 2);
+}
+
+static int kunit_resource_test_init(struct kunit *test)
+{
+ struct kunit_test_resource_context *ctx =
+ kzalloc(sizeof(*ctx), GFP_KERNEL);
+
+ if (!ctx)
+ return -ENOMEM;
+
+ test->priv = ctx;
+
+ kunit_init_test(&ctx->test, "test_test_context");
+
+ return 0;
+}
+
+static void kunit_resource_test_exit(struct kunit *test)
+{
+ struct kunit_test_resource_context *ctx = test->priv;
+
+ kunit_cleanup(&ctx->test);
+ kfree(ctx);
+}
+
+static struct kunit_case kunit_resource_test_cases[] = {
+ KUNIT_CASE(kunit_resource_test_init_resources),
+ KUNIT_CASE(kunit_resource_test_alloc_resource),
+ KUNIT_CASE(kunit_resource_test_free_resource),
+ KUNIT_CASE(kunit_resource_test_cleanup_resources),
+ KUNIT_CASE(kunit_resource_test_proper_free_ordering),
+ {}
+};
+
+static struct kunit_suite kunit_resource_test_suite = {
+ .name = "kunit-resource-test",
+ .init = kunit_resource_test_init,
+ .exit = kunit_resource_test_exit,
+ .test_cases = kunit_resource_test_cases,
+};
+kunit_test_suite(kunit_resource_test_suite);
--
2.22.0.410.gd8fdbe21b5-goog
^ permalink raw reply related
* [PATCH v7 11/18] kunit: test: add the concept of assertions
From: Brendan Higgins @ 2019-07-09 6:30 UTC (permalink / raw)
To: frowand.list-Re5JQEeQqe8AvxtiuMwx3w,
gregkh-hQyY1W1yCW8ekmWlsbkhG0B+6BGkLq7r,
jpoimboe-H+wXaHxf7aLQT0dZR+AlfA, keescook-hpIqsD4AKlfQT0dZR+AlfA,
kieran.bingham-ryLnwIuWjnjg/C1BVhZhaw,
mcgrof-DgEjT+Ai2ygdnm+yROfE0A, peterz-wEGCiKHe2LqWVfeAwA7xHQ,
robh-DgEjT+Ai2ygdnm+yROfE0A, sboyd-DgEjT+Ai2ygdnm+yROfE0A,
shuah-DgEjT+Ai2ygdnm+yROfE0A, tytso-3s7WtUTddSA,
yamada.masahiro-uWyLwvC0a2jby3iVrkZq2A
Cc: pmladek-IBi9RG/b67k, linux-doc-u79uwXL29TY76Z2rM5mHXA,
amir73il-Re5JQEeQqe8AvxtiuMwx3w, Brendan Higgins,
dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW,
Alexander.Levin-0li6OtcxBFHby3iVrkZq2A,
linux-kselftest-u79uwXL29TY76Z2rM5mHXA,
linux-nvdimm-hn68Rpc1hR1g9hUCZPvPmw,
khilman-rdvid1DuHRBWk0Htik3J/w, knut.omang-QHcLZuEGTsvQT0dZR+AlfA,
wfg-VuQAYsv1563Yd54FQh9/CA, joel-U3u1mxZcP9KHXe+LvDLADg,
rientjes-hpIqsD4AKlfQT0dZR+AlfA, jdike-OPE4K8JWMJJBDgjK7y7TUQ,
dan.carpenter-QHcLZuEGTsvQT0dZR+AlfA,
devicetree-u79uwXL29TY76Z2rM5mHXA,
linux-kbuild-u79uwXL29TY76Z2rM5mHXA, Tim.Bird-7U/KSKJipcs,
linux-um-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
rostedt-nx8X9YLhiw1AfugRpC6u6w, julia.lawall-L2FTfq7BK8M,
kunit-dev-/JYPxA39Uh5TLH3MbocFFw, richard-/L3Ra7n9ekc,
rdunlap-wEGCiKHe2LqWVfeAwA7xHQ,
linux-kernel-u79uwXL29TY76Z2rM5mHXA, daniel-/w4YWyX8dFk,
mpe-Gsx/Oe8HsFggBc27wqDAHg, linux-fsdevel-u79uwXL29TY76Z2rM5mHXA
In-Reply-To: <20190709063023.251446-1-brendanhiggins-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>
Add support for assertions which are like expectations except the test
terminates if the assertion is not satisfied.
The idea with assertions is that you use them to state all the
preconditions for your test. Logically speaking, these are the premises
of the test case, so if a premise isn't true, there is no point in
continuing the test case because there are no conclusions that can be
drawn without the premises. Whereas, the expectation is the thing you
are trying to prove. It is not used universally in x-unit style test
frameworks, but I really like it as a convention. You could still
express the idea of a premise using the above idiom, but I think
KUNIT_ASSERT_* states the intended idea perfectly.
Signed-off-by: Brendan Higgins <brendanhiggins-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>
Reviewed-by: Greg Kroah-Hartman <gregkh-hQyY1W1yCW8ekmWlsbkhG0B+6BGkLq7r@public.gmane.org>
Reviewed-by: Logan Gunthorpe <logang-OTvnGxWRz7hWk0Htik3J/w@public.gmane.org>
---
include/kunit/test.h | 499 ++++++++++++++++++++++++++++++++++++-
kunit/string-stream-test.c | 12 +-
kunit/test-test.c | 2 +
kunit/test.c | 66 +++++
4 files changed, 570 insertions(+), 9 deletions(-)
diff --git a/include/kunit/test.h b/include/kunit/test.h
index 01440f3569847..e97273eb52f55 100644
--- a/include/kunit/test.h
+++ b/include/kunit/test.h
@@ -86,9 +86,10 @@ struct kunit;
* @name: the name of the test case.
*
* A test case is a function with the signature, ``void (*)(struct kunit *)``
- * that makes expectations (see KUNIT_EXPECT_TRUE()) about code under test. Each
- * test case is associated with a &struct kunit_suite and will be run after the
- * suite's init function and followed by the suite's exit function.
+ * that makes expectations and assertions (see KUNIT_EXPECT_TRUE() and
+ * KUNIT_ASSERT_TRUE()) about code under test. Each test case is associated with
+ * a &struct kunit_suite and will be run after the suite's init function and
+ * followed by the suite's exit function.
*
* A test case should be static and should only be created with the KUNIT_CASE()
* macro; additionally, every array of test cases should be terminated with an
@@ -836,4 +837,496 @@ do { \
KUNIT_EXPECT_END(test, !IS_ERR_OR_NULL(__ptr), __stream); \
} while (0)
+static inline struct kunit_stream *kunit_assert_start(struct kunit *test,
+ const char *file,
+ const char *line)
+{
+ struct kunit_stream *stream = alloc_kunit_stream(test, KERN_ERR);
+
+ kunit_stream_add(stream, "ASSERTION FAILED at %s:%s\n\t", file, line);
+
+ return stream;
+}
+
+static inline void kunit_assert_end(struct kunit *test,
+ bool success,
+ struct kunit_stream *stream)
+{
+ if (!success) {
+ kunit_fail(test, stream);
+ kunit_abort(test);
+ } else {
+ kunit_stream_clear(stream);
+ }
+}
+
+#define KUNIT_ASSERT_START(test) \
+ kunit_assert_start(test, __FILE__, __stringify(__LINE__))
+
+#define KUNIT_ASSERT_END(test, success, stream) \
+ kunit_assert_end(test, success, stream)
+
+#define KUNIT_ASSERT(test, success, message) do { \
+ struct kunit_stream *__stream = KUNIT_ASSERT_START(test); \
+ \
+ kunit_stream_add(__stream, message); \
+ KUNIT_ASSERT_END(test, success, __stream); \
+} while (0)
+
+#define KUNIT_ASSERT_MSG(test, success, message, fmt, ...) do { \
+ struct kunit_stream *__stream = KUNIT_ASSERT_START(test); \
+ \
+ kunit_stream_add(__stream, message); \
+ kunit_stream_add(__stream, fmt, ##__VA_ARGS__); \
+ KUNIT_ASSERT_END(test, success, __stream); \
+} while (0)
+
+#define KUNIT_ASSERT_FAILURE(test, fmt, ...) do { \
+ struct kunit_stream *__stream = KUNIT_ASSERT_START(test); \
+ \
+ kunit_stream_add(__stream, fmt, ##__VA_ARGS__); \
+ KUNIT_ASSERT_END(test, false, __stream); \
+} while (0)
+
+/**
+ * KUNIT_ASSERT_TRUE() - Sets an assertion that @condition is true.
+ * @test: The test context object.
+ * @condition: an arbitrary boolean expression. The test fails and aborts when
+ * this does not evaluate to true.
+ *
+ * This and assertions of the form `KUNIT_ASSERT_*` will cause the test case to
+ * fail *and immediately abort* when the specified condition is not met. Unlike
+ * an expectation failure, it will prevent the test case from continuing to run;
+ * this is otherwise known as an *assertion failure*.
+ */
+#define KUNIT_ASSERT_TRUE(test, condition) \
+ KUNIT_ASSERT(test, (condition), \
+ "Asserted " #condition " is true, but is false\n")
+
+#define KUNIT_ASSERT_TRUE_MSG(test, condition, fmt, ...) \
+ KUNIT_ASSERT_MSG(test, (condition), \
+ "Asserted " #condition " is true, but is false\n",\
+ fmt, ##__VA_ARGS__)
+
+/**
+ * KUNIT_ASSERT_FALSE() - Sets an assertion that @condition is false.
+ * @test: The test context object.
+ * @condition: an arbitrary boolean expression.
+ *
+ * Sets an assertion that the value that @condition evaluates to is false. This
+ * is the same as KUNIT_EXPECT_FALSE(), except it causes an assertion failure
+ * (see KUNIT_ASSERT_TRUE()) when the assertion is not met.
+ */
+#define KUNIT_ASSERT_FALSE(test, condition) \
+ KUNIT_ASSERT(test, !(condition), \
+ "Asserted " #condition " is false, but is true\n")
+
+#define KUNIT_ASSERT_FALSE_MSG(test, condition, fmt, ...) \
+ KUNIT_ASSERT_MSG(test, !(condition), \
+ "Asserted " #condition " is false, but is true\n",\
+ fmt, ##__VA_ARGS__)
+
+void kunit_assert_binary_msg(struct kunit *test,
+ long long left, const char *left_name,
+ long long right, const char *right_name,
+ bool compare_result,
+ const char *compare_name,
+ const char *file,
+ const char *line,
+ const char *fmt, ...);
+
+static inline void kunit_assert_binary(struct kunit *test,
+ long long left, const char *left_name,
+ long long right, const char *right_name,
+ bool compare_result,
+ const char *compare_name,
+ const char *file,
+ const char *line)
+{
+ kunit_assert_binary_msg(test,
+ left, left_name,
+ right, right_name,
+ compare_result,
+ compare_name,
+ file,
+ line,
+ NULL);
+}
+
+void kunit_assert_ptr_binary_msg(struct kunit *test,
+ void *left, const char *left_name,
+ void *right, const char *right_name,
+ bool compare_result,
+ const char *compare_name,
+ const char *file,
+ const char *line,
+ const char *fmt, ...);
+
+static inline void kunit_assert_ptr_binary(struct kunit *test,
+ void *left, const char *left_name,
+ void *right, const char *right_name,
+ bool compare_result,
+ const char *compare_name,
+ const char *file,
+ const char *line)
+{
+ kunit_assert_ptr_binary_msg(test,
+ left, left_name,
+ right, right_name,
+ compare_result,
+ compare_name,
+ file,
+ line,
+ NULL);
+}
+
+/*
+ * A factory macro for defining the expectations for the basic comparisons
+ * defined for the built in types.
+ *
+ * Unfortunately, there is no common type that all types can be promoted to for
+ * which all the binary operators behave the same way as for the actual types
+ * (for example, there is no type that long long and unsigned long long can
+ * both be cast to where the comparison result is preserved for all values). So
+ * the best we can do is do the comparison in the original types and then coerce
+ * everything to long long for printing; this way, the comparison behaves
+ * correctly and the printed out value usually makes sense without
+ * interpretation, but can always be interpretted to figure out the actual
+ * value.
+ */
+#define KUNIT_ASSERT_BINARY(test, left, condition, right) do { \
+ typeof(left) __left = (left); \
+ typeof(right) __right = (right); \
+ __kunit_typecheck(__left, __right); \
+ kunit_assert_binary(test, \
+ (long long) __left, #left, \
+ (long long) __right, #right, \
+ __left condition __right, #condition, \
+ __FILE__, __stringify(__LINE__)); \
+} while (0)
+
+#define KUNIT_ASSERT_BINARY_MSG(test, left, condition, right, fmt, ...) do { \
+ typeof(left) __left = (left); \
+ typeof(right) __right = (right); \
+ __kunit_typecheck(__left, __right); \
+ kunit_assert_binary_msg(test, \
+ (long long) __left, #left, \
+ (long long) __right, #right, \
+ __left condition __right, #condition, \
+ __FILE__, __stringify(__LINE__), \
+ fmt, ##__VA_ARGS__); \
+} while (0)
+
+/*
+ * Just like KUNIT_EXPECT_BINARY, but for comparing pointer types.
+ */
+#define KUNIT_ASSERT_PTR_BINARY(test, left, condition, right) do { \
+ typeof(left) __left = (left); \
+ typeof(right) __right = (right); \
+ __kunit_typecheck(__left, __right); \
+ kunit_assert_ptr_binary(test, \
+ (void *) __left, #left, \
+ (void *) __right, #right, \
+ __left condition __right, #condition, \
+ __FILE__, __stringify(__LINE__)); \
+} while (0)
+
+#define KUNIT_ASSERT_PTR_BINARY_MSG(test, left, condition, right, fmt, ...) \
+do { \
+ typeof(left) __left = (left); \
+ typeof(right) __right = (right); \
+ __kunit_typecheck(__left, __right); \
+ kunit_assert_ptr_binary_msg(test, \
+ (void *) __left, #left, \
+ (void *) __right, #right, \
+ __left condition __right, #condition, \
+ __FILE__, __stringify(__LINE__), \
+ fmt, ##__VA_ARGS__); \
+} while (0)
+
+/**
+ * KUNIT_ASSERT_EQ() - Sets an assertion that @left and @right are equal.
+ * @test: The test context object.
+ * @left: an arbitrary expression that evaluates to a primitive C type.
+ * @right: an arbitrary expression that evaluates to a primitive C type.
+ *
+ * Sets an assertion that the values that @left and @right evaluate to are
+ * equal. This is the same as KUNIT_EXPECT_EQ(), except it causes an assertion
+ * failure (see KUNIT_ASSERT_TRUE()) when the assertion is not met.
+ */
+#define KUNIT_ASSERT_EQ(test, left, right) \
+ KUNIT_ASSERT_BINARY(test, left, ==, right)
+
+#define KUNIT_ASSERT_EQ_MSG(test, left, right, fmt, ...) \
+ KUNIT_ASSERT_BINARY_MSG(test, \
+ left, \
+ ==, \
+ right, \
+ fmt, \
+ ##__VA_ARGS__)
+
+/**
+ * KUNIT_ASSERT_PTR_EQ() - Asserts that pointers @left and @right are equal.
+ * @test: The test context object.
+ * @left: an arbitrary expression that evaluates to a pointer.
+ * @right: an arbitrary expression that evaluates to a pointer.
+ *
+ * Sets an assertion that the values that @left and @right evaluate to are
+ * equal. This is the same as KUNIT_EXPECT_EQ(), except it causes an assertion
+ * failure (see KUNIT_ASSERT_TRUE()) when the assertion is not met.
+ */
+#define KUNIT_ASSERT_PTR_EQ(test, left, right) \
+ KUNIT_ASSERT_PTR_BINARY(test, left, ==, right)
+
+#define KUNIT_ASSERT_PTR_EQ_MSG(test, left, right, fmt, ...) \
+ KUNIT_ASSERT_PTR_BINARY_MSG(test, \
+ left, \
+ ==, \
+ right, \
+ fmt, \
+ ##__VA_ARGS__)
+
+/**
+ * KUNIT_ASSERT_NE() - An assertion that @left and @right are not equal.
+ * @test: The test context object.
+ * @left: an arbitrary expression that evaluates to a primitive C type.
+ * @right: an arbitrary expression that evaluates to a primitive C type.
+ *
+ * Sets an assertion that the values that @left and @right evaluate to are not
+ * equal. This is the same as KUNIT_EXPECT_NE(), except it causes an assertion
+ * failure (see KUNIT_ASSERT_TRUE()) when the assertion is not met.
+ */
+#define KUNIT_ASSERT_NE(test, left, right) \
+ KUNIT_ASSERT_BINARY(test, left, !=, right)
+
+#define KUNIT_ASSERT_NE_MSG(test, left, right, fmt, ...) \
+ KUNIT_ASSERT_BINARY_MSG(test, \
+ left, \
+ !=, \
+ right, \
+ fmt, \
+ ##__VA_ARGS__)
+
+/**
+ * KUNIT_ASSERT_PTR_NE() - Asserts that pointers @left and @right are not equal.
+ * KUNIT_ASSERT_PTR_EQ() - Asserts that pointers @left and @right are equal.
+ * @test: The test context object.
+ * @left: an arbitrary expression that evaluates to a pointer.
+ * @right: an arbitrary expression that evaluates to a pointer.
+ *
+ * Sets an assertion that the values that @left and @right evaluate to are not
+ * equal. This is the same as KUNIT_EXPECT_NE(), except it causes an assertion
+ * failure (see KUNIT_ASSERT_TRUE()) when the assertion is not met.
+ */
+#define KUNIT_ASSERT_PTR_NE(test, left, right) \
+ KUNIT_ASSERT_PTR_BINARY(test, left, !=, right)
+
+#define KUNIT_ASSERT_PTR_NE_MSG(test, left, right, fmt, ...) \
+ KUNIT_ASSERT_PTR_BINARY_MSG(test, \
+ left, \
+ !=, \
+ right, \
+ fmt, \
+ ##__VA_ARGS__)
+/**
+ * KUNIT_ASSERT_LT() - An assertion that @left is less than @right.
+ * @test: The test context object.
+ * @left: an arbitrary expression that evaluates to a primitive C type.
+ * @right: an arbitrary expression that evaluates to a primitive C type.
+ *
+ * Sets an assertion that the value that @left evaluates to is less than the
+ * value that @right evaluates to. This is the same as KUNIT_EXPECT_LT(), except
+ * it causes an assertion failure (see KUNIT_ASSERT_TRUE()) when the assertion
+ * is not met.
+ */
+#define KUNIT_ASSERT_LT(test, left, right) \
+ KUNIT_ASSERT_BINARY(test, left, <, right)
+
+#define KUNIT_ASSERT_LT_MSG(test, left, right, fmt, ...) \
+ KUNIT_ASSERT_BINARY_MSG(test, \
+ left, \
+ <, \
+ right, \
+ fmt, \
+ ##__VA_ARGS__)
+/**
+ * KUNIT_ASSERT_LE() - An assertion that @left is less than or equal to @right.
+ * @test: The test context object.
+ * @left: an arbitrary expression that evaluates to a primitive C type.
+ * @right: an arbitrary expression that evaluates to a primitive C type.
+ *
+ * Sets an assertion that the value that @left evaluates to is less than or
+ * equal to the value that @right evaluates to. This is the same as
+ * KUNIT_EXPECT_LE(), except it causes an assertion failure (see
+ * KUNIT_ASSERT_TRUE()) when the assertion is not met.
+ */
+#define KUNIT_ASSERT_LE(test, left, right) \
+ KUNIT_ASSERT_BINARY(test, left, <=, right)
+
+#define KUNIT_ASSERT_LE_MSG(test, left, right, fmt, ...) \
+ KUNIT_ASSERT_BINARY_MSG(test, \
+ left, \
+ <=, \
+ right, \
+ fmt, \
+ ##__VA_ARGS__)
+/**
+ * KUNIT_ASSERT_GT() - An assertion that @left is greater than @right.
+ * @test: The test context object.
+ * @left: an arbitrary expression that evaluates to a primitive C type.
+ * @right: an arbitrary expression that evaluates to a primitive C type.
+ *
+ * Sets an assertion that the value that @left evaluates to is greater than the
+ * value that @right evaluates to. This is the same as KUNIT_EXPECT_GT(), except
+ * it causes an assertion failure (see KUNIT_ASSERT_TRUE()) when the assertion
+ * is not met.
+ */
+#define KUNIT_ASSERT_GT(test, left, right) \
+ KUNIT_ASSERT_BINARY(test, left, >, right)
+
+#define KUNIT_ASSERT_GT_MSG(test, left, right, fmt, ...) \
+ KUNIT_ASSERT_BINARY_MSG(test, \
+ left, \
+ >, \
+ right, \
+ fmt, \
+ ##__VA_ARGS__)
+
+/**
+ * KUNIT_ASSERT_GE() - Assertion that @left is greater than or equal to @right.
+ * @test: The test context object.
+ * @left: an arbitrary expression that evaluates to a primitive C type.
+ * @right: an arbitrary expression that evaluates to a primitive C type.
+ *
+ * Sets an assertion that the value that @left evaluates to is greater than the
+ * value that @right evaluates to. This is the same as KUNIT_EXPECT_GE(), except
+ * it causes an assertion failure (see KUNIT_ASSERT_TRUE()) when the assertion
+ * is not met.
+ */
+#define KUNIT_ASSERT_GE(test, left, right) \
+ KUNIT_ASSERT_BINARY(test, left, >=, right)
+
+#define KUNIT_ASSERT_GE_MSG(test, left, right, fmt, ...) \
+ KUNIT_ASSERT_BINARY_MSG(test, \
+ left, \
+ >=, \
+ right, \
+ fmt, \
+ ##__VA_ARGS__)
+
+/**
+ * KUNIT_ASSERT_STREQ() - An assertion that strings @left and @right are equal.
+ * @test: The test context object.
+ * @left: an arbitrary expression that evaluates to a null terminated string.
+ * @right: an arbitrary expression that evaluates to a null terminated string.
+ *
+ * Sets an assertion that the values that @left and @right evaluate to are
+ * equal. This is the same as KUNIT_EXPECT_STREQ(), except it causes an
+ * assertion failure (see KUNIT_ASSERT_TRUE()) when the assertion is not met.
+ */
+#define KUNIT_ASSERT_STREQ(test, left, right) do { \
+ struct kunit_stream *__stream = KUNIT_ASSERT_START(test); \
+ typeof(left) __left = (left); \
+ typeof(right) __right = (right); \
+ \
+ kunit_stream_add(__stream, "Asserted " #left " == " #right ", but\n"); \
+ kunit_stream_add(__stream, "\t\t%s == %s\n", #left, __left); \
+ kunit_stream_add(__stream, "\t\t%s == %s\n", #right, __right); \
+ \
+ KUNIT_ASSERT_END(test, !strcmp(left, right), __stream); \
+} while (0)
+
+#define KUNIT_ASSERT_STREQ_MSG(test, left, right, fmt, ...) do { \
+ struct kunit_stream *__stream = KUNIT_ASSERT_START(test); \
+ typeof(left) __left = (left); \
+ typeof(right) __right = (right); \
+ \
+ kunit_stream_add(__stream, "Asserted " #left " == " #right ", but\n"); \
+ kunit_stream_add(__stream, "\t\t%s == %s\n", #left, __left); \
+ kunit_stream_add(__stream, "\t\t%s == %s\n", #right, __right); \
+ kunit_stream_add(__stream, fmt, ##__VA_ARGS__); \
+ \
+ KUNIT_ASSERT_END(test, !strcmp(left, right), __stream); \
+} while (0)
+
+/**
+ * KUNIT_ASSERT_STRNEQ() - Expects that strings @left and @right are not equal.
+ * @test: The test context object.
+ * @left: an arbitrary expression that evaluates to a null terminated string.
+ * @right: an arbitrary expression that evaluates to a null terminated string.
+ *
+ * Sets an expectation that the values that @left and @right evaluate to are
+ * not equal. This is semantically equivalent to
+ * KUNIT_ASSERT_TRUE(@test, strcmp((@left), (@right))). See KUNIT_ASSERT_TRUE()
+ * for more information.
+ */
+#define KUNIT_ASSERT_STRNEQ(test, left, right) do { \
+ struct kunit_stream *__stream = KUNIT_ASSERT_START(test); \
+ typeof(left) __left = (left); \
+ typeof(right) __right = (right); \
+ \
+ kunit_stream_add(__stream, "Asserted " #left " == " #right ", but\n"); \
+ kunit_stream_add(__stream, "\t\t%s == %s\n", #left, __left); \
+ kunit_stream_add(__stream, "\t\t%s == %s\n", #right, __right); \
+ \
+ KUNIT_ASSERT_END(test, strcmp(left, right), __stream); \
+} while (0)
+
+#define KUNIT_ASSERT_STRNEQ_MSG(test, left, right, fmt, ...) do { \
+ struct kunit_stream *__stream = KUNIT_ASSERT_START(test); \
+ typeof(left) __left = (left); \
+ typeof(right) __right = (right); \
+ \
+ kunit_stream_add(__stream, "Asserted " #left " == " #right ", but\n"); \
+ kunit_stream_add(__stream, "\t\t%s == %s\n", #left, __left); \
+ kunit_stream_add(__stream, "\t\t%s == %s\n", #right, __right); \
+ kunit_stream_add(__stream, fmt, ##__VA_ARGS__); \
+ \
+ KUNIT_ASSERT_END(test, strcmp(left, right), __stream); \
+} while (0)
+
+/**
+ * KUNIT_ASSERT_NOT_ERR_OR_NULL() - Assertion that @ptr is not null and not err.
+ * @test: The test context object.
+ * @ptr: an arbitrary pointer.
+ *
+ * Sets an assertion that the value that @ptr evaluates to is not null and not
+ * an errno stored in a pointer. This is the same as
+ * KUNIT_EXPECT_NOT_ERR_OR_NULL(), except it causes an assertion failure (see
+ * KUNIT_ASSERT_TRUE()) when the assertion is not met.
+ */
+#define KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr) do { \
+ struct kunit_stream *__stream = KUNIT_ASSERT_START(test); \
+ typeof(ptr) __ptr = (ptr); \
+ \
+ if (!__ptr) \
+ kunit_stream_add(__stream, \
+ "Asserted " #ptr " is not null, but is\n"); \
+ if (IS_ERR(__ptr)) \
+ kunit_stream_add(__stream, \
+ "Asserted " #ptr " is not error, but is: %ld\n",\
+ PTR_ERR(__ptr)); \
+ \
+ KUNIT_ASSERT_END(test, !IS_ERR_OR_NULL(__ptr), __stream); \
+} while (0)
+
+#define KUNIT_ASSERT_NOT_ERR_OR_NULL_MSG(test, ptr, fmt, ...) do { \
+ struct kunit_stream *__stream = KUNIT_ASSERT_START(test); \
+ typeof(ptr) __ptr = (ptr); \
+ \
+ if (!__ptr) { \
+ kunit_stream_add(__stream, \
+ "Asserted " #ptr " is not null, but is\n"); \
+ kunit_stream_add(__stream, fmt, ##__VA_ARGS__); \
+ } \
+ if (IS_ERR(__ptr)) { \
+ kunit_stream_add(__stream, \
+ "Asserted " #ptr " is not error, but is: %ld\n",\
+ PTR_ERR(__ptr)); \
+ \
+ kunit_stream_add(__stream, fmt, ##__VA_ARGS__); \
+ } \
+ KUNIT_ASSERT_END(test, !IS_ERR_OR_NULL(__ptr), __stream); \
+} while (0)
+
#endif /* _KUNIT_TEST_H */
diff --git a/kunit/string-stream-test.c b/kunit/string-stream-test.c
index b5641b078b8f6..5f27d576d2daf 100644
--- a/kunit/string-stream-test.c
+++ b/kunit/string-stream-test.c
@@ -34,7 +34,7 @@ static void string_stream_test_get_string(struct kunit *test)
string_stream_add(stream, " %s", "bar");
output = string_stream_get_string(stream);
- KUNIT_EXPECT_STREQ(test, output, "Foo bar");
+ KUNIT_ASSERT_STREQ(test, output, "Foo bar");
kfree(output);
}
@@ -48,16 +48,16 @@ static void string_stream_test_add_and_clear(struct kunit *test)
string_stream_add(stream, "A");
output = string_stream_get_string(stream);
- KUNIT_EXPECT_STREQ(test, output, "AAAAAAAAAA");
- KUNIT_EXPECT_EQ(test, stream->length, (size_t)10);
- KUNIT_EXPECT_FALSE(test, string_stream_is_empty(stream));
+ KUNIT_ASSERT_STREQ(test, output, "AAAAAAAAAA");
+ KUNIT_ASSERT_EQ(test, stream->length, (size_t)10);
+ KUNIT_ASSERT_FALSE(test, string_stream_is_empty(stream));
kfree(output);
string_stream_clear(stream);
output = string_stream_get_string(stream);
- KUNIT_EXPECT_STREQ(test, output, "");
- KUNIT_EXPECT_TRUE(test, string_stream_is_empty(stream));
+ KUNIT_ASSERT_STREQ(test, output, "");
+ KUNIT_ASSERT_TRUE(test, string_stream_is_empty(stream));
}
static struct kunit_case string_stream_test_cases[] = {
diff --git a/kunit/test-test.c b/kunit/test-test.c
index 88f4cdf03db2a..058f3fb37458a 100644
--- a/kunit/test-test.c
+++ b/kunit/test-test.c
@@ -78,11 +78,13 @@ static int kunit_try_catch_test_init(struct kunit *test)
struct kunit_try_catch_test_context *ctx;
ctx = kunit_kzalloc(test, sizeof(*ctx), GFP_KERNEL);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
test->priv = ctx;
ctx->try_catch = kunit_kmalloc(test,
sizeof(*ctx->try_catch),
GFP_KERNEL);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx->try_catch);
return 0;
}
diff --git a/kunit/test.c b/kunit/test.c
index 731f3c9eecf20..52b818d756704 100644
--- a/kunit/test.c
+++ b/kunit/test.c
@@ -501,3 +501,69 @@ void kunit_expect_ptr_binary_msg(struct kunit *test,
kunit_expect_end(test, compare_result, stream);
}
+
+void kunit_assert_binary_msg(struct kunit *test,
+ long long left, const char *left_name,
+ long long right, const char *right_name,
+ bool compare_result,
+ const char *compare_name,
+ const char *file,
+ const char *line,
+ const char *fmt, ...)
+{
+ struct kunit_stream *stream = kunit_assert_start(test, file, line);
+ struct va_format vaf;
+ va_list args;
+
+ kunit_stream_add(stream,
+ "Asserted %s %s %s, but\n",
+ left_name, compare_name, right_name);
+ kunit_stream_add(stream, "\t\t%s == %lld\n", left_name, left);
+ kunit_stream_add(stream, "\t\t%s == %lld\n", right_name, right);
+
+ if (fmt) {
+ va_start(args, fmt);
+
+ vaf.fmt = fmt;
+ vaf.va = &args;
+
+ kunit_stream_add(stream, "\n%pV", &vaf);
+
+ va_end(args);
+ }
+
+ kunit_assert_end(test, compare_result, stream);
+}
+
+void kunit_assert_ptr_binary_msg(struct kunit *test,
+ void *left, const char *left_name,
+ void *right, const char *right_name,
+ bool compare_result,
+ const char *compare_name,
+ const char *file,
+ const char *line,
+ const char *fmt, ...)
+{
+ struct kunit_stream *stream = kunit_assert_start(test, file, line);
+ struct va_format vaf;
+ va_list args;
+
+ kunit_stream_add(stream,
+ "Asserted %s %s %s, but\n",
+ left_name, compare_name, right_name);
+ kunit_stream_add(stream, "\t\t%s == %pK\n", left_name, left);
+ kunit_stream_add(stream, "\t\t%s == %pK", right_name, right);
+
+ if (fmt) {
+ va_start(args, fmt);
+
+ vaf.fmt = fmt;
+ vaf.va = &args;
+
+ kunit_stream_add(stream, "\n%pV", &vaf);
+
+ va_end(args);
+ }
+
+ kunit_assert_end(test, compare_result, stream);
+}
--
2.22.0.410.gd8fdbe21b5-goog
^ permalink raw reply related
* [PATCH v7 10/18] kunit: test: add tests for kunit test abort
From: Brendan Higgins @ 2019-07-09 6:30 UTC (permalink / raw)
To: frowand.list, gregkh, jpoimboe, keescook, kieran.bingham, mcgrof,
peterz, robh, sboyd, shuah, tytso, yamada.masahiro
Cc: pmladek, linux-doc, amir73il, Brendan Higgins, dri-devel,
Alexander.Levin, linux-kselftest, linux-nvdimm, khilman,
knut.omang, wfg, joel, rientjes, jdike, dan.carpenter, devicetree,
linux-kbuild, Tim.Bird, linux-um, rostedt, julia.lawall,
kunit-dev, richard, rdunlap, linux-kernel, mpe, linux-fsdevel,
logang
In-Reply-To: <20190709063023.251446-1-brendanhiggins@google.com>
Add KUnit tests for the KUnit test abort mechanism (see preceding
commit). Add tests both for general try catch mechanism as well as
non-architecture specific mechanism.
Signed-off-by: Brendan Higgins <brendanhiggins@google.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Logan Gunthorpe <logang@deltatee.com>
---
kunit/Makefile | 3 +-
kunit/test-test.c | 101 ++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 103 insertions(+), 1 deletion(-)
create mode 100644 kunit/test-test.c
diff --git a/kunit/Makefile b/kunit/Makefile
index 1f7680cfa11ad..533355867abd2 100644
--- a/kunit/Makefile
+++ b/kunit/Makefile
@@ -3,6 +3,7 @@ obj-$(CONFIG_KUNIT) += test.o \
kunit-stream.o \
try-catch.o
-obj-$(CONFIG_KUNIT_TEST) += string-stream-test.o
+obj-$(CONFIG_KUNIT_TEST) += test-test.o \
+ string-stream-test.o
obj-$(CONFIG_KUNIT_EXAMPLE_TEST) += example-test.o
diff --git a/kunit/test-test.c b/kunit/test-test.c
new file mode 100644
index 0000000000000..88f4cdf03db2a
--- /dev/null
+++ b/kunit/test-test.c
@@ -0,0 +1,101 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * KUnit test for core test infrastructure.
+ *
+ * Copyright (C) 2019, Google LLC.
+ * Author: Brendan Higgins <brendanhiggins@google.com>
+ */
+#include <kunit/test.h>
+
+struct kunit_try_catch_test_context {
+ struct kunit_try_catch *try_catch;
+ bool function_called;
+};
+
+void kunit_test_successful_try(void *data)
+{
+ struct kunit *test = data;
+ struct kunit_try_catch_test_context *ctx = test->priv;
+
+ ctx->function_called = true;
+}
+
+void kunit_test_no_catch(void *data)
+{
+ struct kunit *test = data;
+
+ KUNIT_FAIL(test, "Catch should not be called\n");
+}
+
+static void kunit_test_try_catch_successful_try_no_catch(struct kunit *test)
+{
+ struct kunit_try_catch_test_context *ctx = test->priv;
+ struct kunit_try_catch *try_catch = ctx->try_catch;
+
+ kunit_try_catch_init(try_catch,
+ test,
+ kunit_test_successful_try,
+ kunit_test_no_catch);
+ kunit_try_catch_run(try_catch, test);
+
+ KUNIT_EXPECT_TRUE(test, ctx->function_called);
+}
+
+void kunit_test_unsuccessful_try(void *data)
+{
+ struct kunit *test = data;
+ struct kunit_try_catch_test_context *ctx = test->priv;
+ struct kunit_try_catch *try_catch = ctx->try_catch;
+
+ kunit_try_catch_throw(try_catch);
+ KUNIT_FAIL(test, "This line should never be reached\n");
+}
+
+void kunit_test_catch(void *data)
+{
+ struct kunit *test = data;
+ struct kunit_try_catch_test_context *ctx = test->priv;
+
+ ctx->function_called = true;
+}
+
+static void kunit_test_try_catch_unsuccessful_try_does_catch(struct kunit *test)
+{
+ struct kunit_try_catch_test_context *ctx = test->priv;
+ struct kunit_try_catch *try_catch = ctx->try_catch;
+
+ kunit_try_catch_init(try_catch,
+ test,
+ kunit_test_unsuccessful_try,
+ kunit_test_catch);
+ kunit_try_catch_run(try_catch, test);
+
+ KUNIT_EXPECT_TRUE(test, ctx->function_called);
+}
+
+static int kunit_try_catch_test_init(struct kunit *test)
+{
+ struct kunit_try_catch_test_context *ctx;
+
+ ctx = kunit_kzalloc(test, sizeof(*ctx), GFP_KERNEL);
+ test->priv = ctx;
+
+ ctx->try_catch = kunit_kmalloc(test,
+ sizeof(*ctx->try_catch),
+ GFP_KERNEL);
+
+ return 0;
+}
+
+static struct kunit_case kunit_try_catch_test_cases[] = {
+ KUNIT_CASE(kunit_test_try_catch_successful_try_no_catch),
+ KUNIT_CASE(kunit_test_try_catch_unsuccessful_try_does_catch),
+ {}
+};
+
+static struct kunit_suite kunit_try_catch_test_suite = {
+ .name = "kunit-try-catch-test",
+ .init = kunit_try_catch_test_init,
+ .test_cases = kunit_try_catch_test_cases,
+};
+kunit_test_suite(kunit_try_catch_test_suite);
--
2.22.0.410.gd8fdbe21b5-goog
_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel
^ permalink raw reply related
* [PATCH v7 09/18] kunit: test: add support for test abort
From: Brendan Higgins @ 2019-07-09 6:30 UTC (permalink / raw)
To: frowand.list, gregkh, jpoimboe, keescook, kieran.bingham, mcgrof,
peterz, robh, sboyd, shuah, tytso, yamada.masahiro
Cc: devicetree, dri-devel, kunit-dev, linux-doc, linux-fsdevel,
linux-kbuild, linux-kernel, linux-kselftest, linux-nvdimm,
linux-um, Alexander.Levin, Tim.Bird, amir73il, dan.carpenter,
daniel, jdike, joel, julia.lawall, khilman, knut.omang, logang,
mpe, pmladek, rdunlap, richard, rientjes, rostedt, wfg,
Brendan Higgins
In-Reply-To: <20190709063023.251446-1-brendanhiggins@google.com>
Add support for aborting/bailing out of test cases, which is needed for
implementing assertions.
An assertion is like an expectation, but bails out of the test case
early if the assertion is not met. The idea with assertions is that you
use them to state all the preconditions for your test. Logically
speaking, these are the premises of the test case, so if a premise isn't
true, there is no point in continuing the test case because there are no
conclusions that can be drawn without the premises. Whereas, the
expectation is the thing you are trying to prove.
Signed-off-by: Brendan Higgins <brendanhiggins@google.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Logan Gunthorpe <logang@deltatee.com>
---
include/kunit/test.h | 16 ++++
include/kunit/try-catch.h | 69 +++++++++++++++
kunit/Makefile | 3 +-
kunit/test.c | 176 +++++++++++++++++++++++++++++++++++---
kunit/try-catch.c | 95 ++++++++++++++++++++
5 files changed, 344 insertions(+), 15 deletions(-)
create mode 100644 include/kunit/try-catch.h
create mode 100644 kunit/try-catch.c
diff --git a/include/kunit/test.h b/include/kunit/test.h
index df18765e6ea25..01440f3569847 100644
--- a/include/kunit/test.h
+++ b/include/kunit/test.h
@@ -13,6 +13,7 @@
#include <linux/types.h>
#include <linux/slab.h>
#include <kunit/kunit-stream.h>
+#include <kunit/try-catch.h>
struct kunit_resource;
@@ -167,6 +168,7 @@ struct kunit {
/* private: internal use only. */
const char *name; /* Read only after initialization! */
+ struct kunit_try_catch try_catch;
/*
* success starts as true, and may only be set to false during a test
* case; thus, it is safe to update this across multiple threads using
@@ -176,6 +178,11 @@ struct kunit {
*/
bool success; /* Read only after test_case finishes! */
struct mutex lock; /* Gaurds all mutable test state. */
+ /*
+ * death_test may be both set and unset from multiple threads in a test
+ * case.
+ */
+ bool death_test; /* Protected by lock. */
/*
* Because resources is a list that may be updated multiple times (with
* new resources) from any thread associated with a test case, we must
@@ -184,10 +191,19 @@ struct kunit {
struct list_head resources; /* Protected by lock. */
};
+static inline void kunit_set_death_test(struct kunit *test, bool death_test)
+{
+ mutex_lock(&test->lock);
+ test->death_test = death_test;
+ mutex_unlock(&test->lock);
+}
+
void kunit_init_test(struct kunit *test, const char *name);
void kunit_fail(struct kunit *test, struct kunit_stream *stream);
+void kunit_abort(struct kunit *test);
+
int kunit_run_tests(struct kunit_suite *suite);
/**
diff --git a/include/kunit/try-catch.h b/include/kunit/try-catch.h
new file mode 100644
index 0000000000000..8a414a9af0b64
--- /dev/null
+++ b/include/kunit/try-catch.h
@@ -0,0 +1,69 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * An API to allow a function, that may fail, to be executed, and recover in a
+ * controlled manner.
+ *
+ * Copyright (C) 2019, Google LLC.
+ * Author: Brendan Higgins <brendanhiggins@google.com>
+ */
+
+#ifndef _KUNIT_TRY_CATCH_H
+#define _KUNIT_TRY_CATCH_H
+
+#include <linux/types.h>
+
+typedef void (*kunit_try_catch_func_t)(void *);
+
+struct kunit;
+
+/*
+ * struct kunit_try_catch - provides a generic way to run code which might fail.
+ * @context: used to pass user data to the try and catch functions.
+ *
+ * kunit_try_catch provides a generic, architecture independent way to execute
+ * an arbitrary function of type kunit_try_catch_func_t which may bail out by
+ * calling kunit_try_catch_throw(). If kunit_try_catch_throw() is called, @try
+ * is stopped at the site of invocation and @catch is catch is called.
+ *
+ * struct kunit_try_catch provides a generic interface for the functionality
+ * needed to implement kunit->abort() which in turn is needed for implementing
+ * assertions. Assertions allow stating a precondition for a test simplifying
+ * how test cases are written and presented.
+ *
+ * Assertions are like expectations, except they abort (call
+ * kunit_try_catch_throw()) when the specified condition is not met. This is
+ * useful when you look at a test case as a logical statement about some piece
+ * of code, where assertions are the premises for the test case, and the
+ * conclusion is a set of predicates, rather expectations, that must all be
+ * true. If your premises are violated, it does not makes sense to continue.
+ */
+struct kunit_try_catch {
+ /* private: internal use only. */
+ struct kunit *test;
+ struct completion *try_completion;
+ int try_result;
+ kunit_try_catch_func_t try;
+ kunit_try_catch_func_t catch;
+ void *context;
+};
+
+void kunit_try_catch_init(struct kunit_try_catch *try_catch,
+ struct kunit *test,
+ kunit_try_catch_func_t try,
+ kunit_try_catch_func_t catch);
+
+void kunit_try_catch_run(struct kunit_try_catch *try_catch, void *context);
+
+void __noreturn kunit_try_catch_throw(struct kunit_try_catch *try_catch);
+
+static inline int kunit_try_catch_get_result(struct kunit_try_catch *try_catch)
+{
+ return try_catch->try_result;
+}
+
+/*
+ * Exposed for testing only.
+ */
+void kunit_generic_try_catch_init(struct kunit_try_catch *try_catch);
+
+#endif /* _KUNIT_TRY_CATCH_H */
diff --git a/kunit/Makefile b/kunit/Makefile
index 60a9ea6cb4697..1f7680cfa11ad 100644
--- a/kunit/Makefile
+++ b/kunit/Makefile
@@ -1,6 +1,7 @@
obj-$(CONFIG_KUNIT) += test.o \
string-stream.o \
- kunit-stream.o
+ kunit-stream.o \
+ try-catch.o
obj-$(CONFIG_KUNIT_TEST) += string-stream-test.o
diff --git a/kunit/test.c b/kunit/test.c
index 8c745fd0c82d3..731f3c9eecf20 100644
--- a/kunit/test.c
+++ b/kunit/test.c
@@ -7,13 +7,26 @@
*/
#include <linux/kernel.h>
+#include <linux/sched/debug.h>
#include <kunit/test.h>
+#include <kunit/try-catch.h>
static void kunit_set_failure(struct kunit *test)
{
WRITE_ONCE(test->success, false);
}
+static bool kunit_get_death_test(struct kunit *test)
+{
+ bool death_test;
+
+ mutex_lock(&test->lock);
+ death_test = test->death_test;
+ mutex_unlock(&test->lock);
+
+ return death_test;
+}
+
static int kunit_vprintk_emit(int level, const char *fmt, va_list args)
{
return vprintk_emit(0, level, NULL, 0, fmt, args);
@@ -126,40 +139,175 @@ void kunit_fail(struct kunit *test, struct kunit_stream *stream)
kunit_stream_commit(stream);
}
+void __noreturn kunit_abort(struct kunit *test)
+{
+ kunit_set_death_test(test, true);
+
+ kunit_try_catch_throw(&test->try_catch);
+
+ /*
+ * Throw could not abort from test.
+ *
+ * XXX: we should never reach this line! As kunit_try_catch_throw is
+ * marked __noreturn.
+ */
+ WARN_ONCE(true, "Throw could not abort from test!\n");
+}
+
void kunit_init_test(struct kunit *test, const char *name)
{
mutex_init(&test->lock);
INIT_LIST_HEAD(&test->resources);
test->name = name;
test->success = true;
+ test->death_test = false;
}
/*
- * Performs all logic to run a test case.
+ * Initializes and runs test case. Does not clean up or do post validations.
*/
-static void kunit_run_case(struct kunit_suite *suite,
- struct kunit_case *test_case)
+static void kunit_run_case_internal(struct kunit *test,
+ struct kunit_suite *suite,
+ struct kunit_case *test_case)
{
- struct kunit test;
- int ret = 0;
-
- kunit_init_test(&test, test_case->name);
+ int ret;
if (suite->init) {
- ret = suite->init(&test);
+ ret = suite->init(test);
if (ret) {
- kunit_err(&test, "failed to initialize: %d\n", ret);
- kunit_set_failure(&test);
+ kunit_err(test, "failed to initialize: %d\n", ret);
+ kunit_set_failure(test);
return;
}
}
- test_case->run_case(&test);
+ test_case->run_case(test);
+}
+
+static void kunit_case_internal_cleanup(struct kunit *test)
+{
+ kunit_cleanup(test);
+}
+/*
+ * Performs post validations and cleanup after a test case was run.
+ * XXX: Should ONLY BE CALLED AFTER kunit_run_case_internal!
+ */
+static void kunit_run_case_cleanup(struct kunit *test,
+ struct kunit_suite *suite)
+{
if (suite->exit)
- suite->exit(&test);
+ suite->exit(test);
+
+ kunit_case_internal_cleanup(test);
+}
+
+/*
+ * Handles an unexpected crash in a test case.
+ */
+static void kunit_handle_test_crash(struct kunit *test,
+ struct kunit_suite *suite,
+ struct kunit_case *test_case)
+{
+ kunit_err(test, "kunit test case crashed!");
+ /*
+ * TODO(brendanhiggins@google.com): This prints the stack trace up
+ * through this frame, not up to the frame that caused the crash.
+ */
+ show_stack(NULL, NULL);
+
+ kunit_case_internal_cleanup(test);
+}
+
+struct kunit_try_catch_context {
+ struct kunit *test;
+ struct kunit_suite *suite;
+ struct kunit_case *test_case;
+};
+
+static void kunit_try_run_case(void *data)
+{
+ struct kunit_try_catch_context *ctx = data;
+ struct kunit *test = ctx->test;
+ struct kunit_suite *suite = ctx->suite;
+ struct kunit_case *test_case = ctx->test_case;
+
+ /*
+ * kunit_run_case_internal may encounter a fatal error; if it does,
+ * abort will be called, this thread will exit, and finally the parent
+ * thread will resume control and handle any necessary clean up.
+ */
+ kunit_run_case_internal(test, suite, test_case);
+ /* This line may never be reached. */
+ kunit_run_case_cleanup(test, suite);
+}
+
+static void kunit_catch_run_case(void *data)
+{
+ struct kunit_try_catch_context *ctx = data;
+ struct kunit *test = ctx->test;
+ struct kunit_suite *suite = ctx->suite;
+ struct kunit_case *test_case = ctx->test_case;
+ int try_exit_code = kunit_try_catch_get_result(&test->try_catch);
+
+ if (try_exit_code) {
+ kunit_set_failure(test);
+ /*
+ * Test case could not finish, we have no idea what state it is
+ * in, so don't do clean up.
+ */
+ if (try_exit_code == -ETIMEDOUT)
+ kunit_err(test, "test case timed out\n");
+ /*
+ * Unknown internal error occurred preventing test case from
+ * running, so there is nothing to clean up.
+ */
+ else
+ kunit_err(test, "internal error occurred preventing test case from running: %d\n",
+ try_exit_code);
+ return;
+ }
+
+ if (kunit_get_death_test(test)) {
+ /*
+ * EXPECTED DEATH: kunit_run_case_internal encountered
+ * anticipated fatal error. Everything should be in a safe
+ * state.
+ */
+ kunit_run_case_cleanup(test, suite);
+ } else {
+ /*
+ * UNEXPECTED DEATH: kunit_run_case_internal encountered an
+ * unanticipated fatal error. We have no idea what the state of
+ * the test case is in.
+ */
+ kunit_handle_test_crash(test, suite, test_case);
+ kunit_set_failure(test);
+ }
+}
+
+/*
+ * Performs all logic to run a test case. It also catches most errors that
+ * occurs in a test case and reports them as failures.
+ */
+static void kunit_run_case_catch_errors(struct kunit_suite *suite,
+ struct kunit_case *test_case)
+{
+ struct kunit_try_catch_context context;
+ struct kunit_try_catch *try_catch;
+ struct kunit test;
+
+ kunit_init_test(&test, test_case->name);
+ try_catch = &test.try_catch;
- kunit_cleanup(&test);
+ kunit_try_catch_init(try_catch,
+ &test,
+ kunit_try_run_case,
+ kunit_catch_run_case);
+ context.test = &test;
+ context.suite = suite;
+ context.test_case = test_case;
+ kunit_try_catch_run(try_catch, &context);
test_case->success = test.success;
}
@@ -172,7 +320,7 @@ int kunit_run_tests(struct kunit_suite *suite)
kunit_print_subtest_start(suite);
for (test_case = suite->test_cases; test_case->run_case; test_case++) {
- kunit_run_case(suite, test_case);
+ kunit_run_case_catch_errors(suite, test_case);
kunit_print_test_case_ok_not_ok(test_case, test_case_count++);
}
diff --git a/kunit/try-catch.c b/kunit/try-catch.c
new file mode 100644
index 0000000000000..de580f074387b
--- /dev/null
+++ b/kunit/try-catch.c
@@ -0,0 +1,95 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * An API to allow a function, that may fail, to be executed, and recover in a
+ * controlled manner.
+ *
+ * Copyright (C) 2019, Google LLC.
+ * Author: Brendan Higgins <brendanhiggins@google.com>
+ */
+
+#include <kunit/try-catch.h>
+#include <kunit/test.h>
+#include <linux/completion.h>
+#include <linux/kthread.h>
+
+void __noreturn kunit_try_catch_throw(struct kunit_try_catch *try_catch)
+{
+ try_catch->try_result = -EFAULT;
+ complete_and_exit(try_catch->try_completion, -EFAULT);
+}
+
+static int kunit_generic_run_threadfn_adapter(void *data)
+{
+ struct kunit_try_catch *try_catch = data;
+
+ try_catch->try(try_catch->context);
+
+ complete_and_exit(try_catch->try_completion, 0);
+}
+
+void kunit_try_catch_run(struct kunit_try_catch *try_catch, void *context)
+{
+ DECLARE_COMPLETION_ONSTACK(try_completion);
+ struct kunit *test = try_catch->test;
+ struct task_struct *task_struct;
+ int exit_code, status;
+
+ try_catch->context = context;
+ try_catch->try_completion = &try_completion;
+ try_catch->try_result = 0;
+ task_struct = kthread_run(kunit_generic_run_threadfn_adapter,
+ try_catch,
+ "kunit_try_catch_thread");
+ if (IS_ERR(task_struct)) {
+ try_catch->catch(try_catch->context);
+ return;
+ }
+
+ /*
+ * TODO(brendanhiggins@google.com): We should probably have some type of
+ * variable timeout here. The only question is what that timeout value
+ * should be.
+ *
+ * The intention has always been, at some point, to be able to label
+ * tests with some type of size bucket (unit/small, integration/medium,
+ * large/system/end-to-end, etc), where each size bucket would get a
+ * default timeout value kind of like what Bazel does:
+ * https://docs.bazel.build/versions/master/be/common-definitions.html#test.size
+ * There is still some debate to be had on exactly how we do this. (For
+ * one, we probably want to have some sort of test runner level
+ * timeout.)
+ *
+ * For more background on this topic, see:
+ * https://mike-bland.com/2011/11/01/small-medium-large.html
+ */
+ status = wait_for_completion_timeout(&try_completion,
+ 300 * MSEC_PER_SEC); /* 5 min */
+ if (status < 0) {
+ kunit_err(test, "try timed out\n");
+ try_catch->try_result = -ETIMEDOUT;
+ }
+
+ exit_code = try_catch->try_result;
+
+ if (!exit_code)
+ return;
+
+ if (exit_code == -EFAULT)
+ try_catch->try_result = 0;
+ else if (exit_code == -EINTR)
+ kunit_err(test, "wake_up_process() was never called\n");
+ else if (exit_code)
+ kunit_err(test, "Unknown error: %d\n", exit_code);
+
+ try_catch->catch(try_catch->context);
+}
+
+void kunit_try_catch_init(struct kunit_try_catch *try_catch,
+ struct kunit *test,
+ kunit_try_catch_func_t try,
+ kunit_try_catch_func_t catch)
+{
+ try_catch->test = test;
+ try_catch->try = try;
+ try_catch->catch = catch;
+}
--
2.22.0.410.gd8fdbe21b5-goog
^ permalink raw reply related
* [PATCH v7 08/18] objtool: add kunit_try_catch_throw to the noreturn list
From: Brendan Higgins @ 2019-07-09 6:30 UTC (permalink / raw)
To: frowand.list, gregkh, jpoimboe, keescook, kieran.bingham, mcgrof,
peterz, robh, sboyd, shuah, tytso, yamada.masahiro
Cc: devicetree, dri-devel, kunit-dev, linux-doc, linux-fsdevel,
linux-kbuild, linux-kernel, linux-kselftest, linux-nvdimm,
linux-um, Alexander.Levin, Tim.Bird, amir73il, dan.carpenter,
daniel, jdike, joel, julia.lawall, khilman, knut.omang, logang,
mpe, pmladek, rdunlap, richard, rientjes, rostedt, wfg,
Brendan Higgins, kbuild test robot
In-Reply-To: <20190709063023.251446-1-brendanhiggins@google.com>
Fix the following warning seen on GCC 7.3:
kunit/test-test.o: warning: objtool: kunit_test_unsuccessful_try() falls through to next function kunit_test_catch()
kunit_try_catch_throw is a function added in the following patch in this
series; it allows KUnit, a unit testing framework for the kernel, to
bail out of a broken test. As a consequence, it is a new __noreturn
function that objtool thinks is broken (as seen above). So fix this
warning by adding kunit_try_catch_throw to objtool's noreturn list.
Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Brendan Higgins <brendanhiggins@google.com>
Link: https://www.spinics.net/lists/linux-kbuild/msg21708.html
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
---
tools/objtool/check.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/tools/objtool/check.c b/tools/objtool/check.c
index 172f991957269..98db5fe85c797 100644
--- a/tools/objtool/check.c
+++ b/tools/objtool/check.c
@@ -134,6 +134,7 @@ static int __dead_end_function(struct objtool_file *file, struct symbol *func,
"usercopy_abort",
"machine_real_restart",
"rewind_stack_do_exit",
+ "kunit_try_catch_throw",
};
if (func->bind == STB_WEAK)
--
2.22.0.410.gd8fdbe21b5-goog
^ permalink raw reply related
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