* [PATCH 2/3] arm/tegra: add support for ventana pinmuxing
From: Peter De Schrijver @ 2011-09-22 10:13 UTC (permalink / raw)
To: linux-arm-kernel
In-Reply-To: <1316686384-20236-1-git-send-email-pdeschrijver@nvidia.com>
Add support for ventana pinmuxing as a seaboard derivative. This is a cut down
version of chromeos kernel commit 772f1b56e713be7a55759c2d5eadb9eb11d078db
by Jong Kim <jongk@nvidia.com>.
Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com>
---
arch/arm/mach-tegra/board-seaboard-pinmux.c | 49 +++++++++++++++++++++++++-
1 files changed, 47 insertions(+), 2 deletions(-)
diff --git a/arch/arm/mach-tegra/board-seaboard-pinmux.c b/arch/arm/mach-tegra/board-seaboard-pinmux.c
index b31c765..89bb774 100644
--- a/arch/arm/mach-tegra/board-seaboard-pinmux.c
+++ b/arch/arm/mach-tegra/board-seaboard-pinmux.c
@@ -158,8 +158,26 @@ static __initdata struct tegra_pingroup_config seaboard_pinmux[] = {
{TEGRA_PINGROUP_XM2D, TEGRA_MUX_NONE, TEGRA_PUPD_NORMAL, TEGRA_TRI_NORMAL},
};
-
-
+static __initdata struct tegra_pingroup_config ventana_pinmux[] = {
+ {TEGRA_PINGROUP_DAP3, TEGRA_MUX_DAP3, TEGRA_PUPD_NORMAL, TEGRA_TRI_TRISTATE},
+ {TEGRA_PINGROUP_DDC, TEGRA_MUX_RSVD2, TEGRA_PUPD_NORMAL, TEGRA_TRI_NORMAL},
+ {TEGRA_PINGROUP_DTA, TEGRA_MUX_VI, TEGRA_PUPD_PULL_DOWN, TEGRA_TRI_NORMAL},
+ {TEGRA_PINGROUP_DTB, TEGRA_MUX_VI, TEGRA_PUPD_PULL_DOWN, TEGRA_TRI_NORMAL},
+ {TEGRA_PINGROUP_DTC, TEGRA_MUX_VI, TEGRA_PUPD_PULL_DOWN, TEGRA_TRI_NORMAL},
+ {TEGRA_PINGROUP_DTD, TEGRA_MUX_VI, TEGRA_PUPD_PULL_DOWN, TEGRA_TRI_NORMAL},
+ {TEGRA_PINGROUP_GMD, TEGRA_MUX_SFLASH, TEGRA_PUPD_NORMAL, TEGRA_TRI_TRISTATE},
+ {TEGRA_PINGROUP_LPW0, TEGRA_MUX_RSVD4, TEGRA_PUPD_NORMAL, TEGRA_TRI_NORMAL},
+ {TEGRA_PINGROUP_LPW2, TEGRA_MUX_RSVD4, TEGRA_PUPD_NORMAL, TEGRA_TRI_NORMAL},
+ {TEGRA_PINGROUP_LSC1, TEGRA_MUX_RSVD4, TEGRA_PUPD_NORMAL, TEGRA_TRI_NORMAL},
+ {TEGRA_PINGROUP_LSCK, TEGRA_MUX_RSVD4, TEGRA_PUPD_NORMAL, TEGRA_TRI_TRISTATE},
+ {TEGRA_PINGROUP_LSDA, TEGRA_MUX_RSVD4, TEGRA_PUPD_NORMAL, TEGRA_TRI_TRISTATE},
+ {TEGRA_PINGROUP_PTA, TEGRA_MUX_RSVD2, TEGRA_PUPD_NORMAL, TEGRA_TRI_NORMAL},
+ {TEGRA_PINGROUP_SLXC, TEGRA_MUX_SDIO3, TEGRA_PUPD_NORMAL, TEGRA_TRI_NORMAL},
+ {TEGRA_PINGROUP_SLXK, TEGRA_MUX_SDIO3, TEGRA_PUPD_NORMAL, TEGRA_TRI_NORMAL},
+ {TEGRA_PINGROUP_SPIA, TEGRA_MUX_GMI, TEGRA_PUPD_NORMAL, TEGRA_TRI_TRISTATE},
+ {TEGRA_PINGROUP_SPIC, TEGRA_MUX_GMI, TEGRA_PUPD_NORMAL, TEGRA_TRI_TRISTATE},
+ {TEGRA_PINGROUP_SPIG, TEGRA_MUX_SPI2_ALT, TEGRA_PUPD_NORMAL, TEGRA_TRI_TRISTATE},
+};
static struct tegra_gpio_table common_gpio_table[] = {
{ .gpio = TEGRA_GPIO_SD2_CD, .enable = true },
@@ -172,6 +190,26 @@ static struct tegra_gpio_table common_gpio_table[] = {
{ .gpio = TEGRA_GPIO_USB1, .enable = true },
};
+static void __init update_pinmux(struct tegra_pingroup_config *newtbl, int size)
+{
+ int i, j;
+ struct tegra_pingroup_config *new_pingroup, *base_pingroup;
+
+ /* Update base seaboard pinmux table with secondary board
+ * specific pinmux table table.
+ */
+ for (i = 0; i < size; i++) {
+ new_pingroup = &newtbl[i];
+ for (j = 0; j < ARRAY_SIZE(seaboard_pinmux); j++) {
+ base_pingroup = &seaboard_pinmux[j];
+ if (new_pingroup->pingroup == base_pingroup->pingroup) {
+ *base_pingroup = *new_pingroup;
+ break;
+ }
+ }
+ }
+}
+
static void __init seaboard_common_pinmux_init(void)
{
tegra_pinmux_config_table(seaboard_pinmux, ARRAY_SIZE(seaboard_pinmux));
@@ -186,3 +224,10 @@ void __init seaboard_pinmux_init(void)
{
seaboard_common_pinmux_init();
}
+
+void __init ventana_pinmux_init(void)
+{
+ update_pinmux(ventana_pinmux, ARRAY_SIZE(ventana_pinmux));
+ seaboard_common_pinmux_init();
+}
+
--
1.7.1
^ permalink raw reply related
* [PATCH 1/3] arm/tegra: prepare Seaboard pinmux code for derived boards
From: Peter De Schrijver @ 2011-09-22 10:13 UTC (permalink / raw)
To: linux-arm-kernel
In-Reply-To: <1316686384-20236-1-git-send-email-pdeschrijver@nvidia.com>
This patch splits out the common part of pinmux and GPIO initialization for
seaboard and derived boards. This code originates from chromeos kernel commit
772f1b56e713be7a55759c2d5eadb9eb11d078db. Author Jong Kim <jongk@nvidia.com>.
Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com>
---
arch/arm/mach-tegra/board-seaboard-pinmux.c | 14 ++++++++++----
1 files changed, 10 insertions(+), 4 deletions(-)
diff --git a/arch/arm/mach-tegra/board-seaboard-pinmux.c b/arch/arm/mach-tegra/board-seaboard-pinmux.c
index 74f78b7..b31c765 100644
--- a/arch/arm/mach-tegra/board-seaboard-pinmux.c
+++ b/arch/arm/mach-tegra/board-seaboard-pinmux.c
@@ -1,5 +1,6 @@
/*
- * Copyright (C) 2010 NVIDIA Corporation
+ * Copyright (C) 2010,2011 NVIDIA Corporation
+ * Copyright (C) 2011 Google, Inc.
*
* This software is licensed under the terms of the GNU General Public
* License version 2, as published by the Free Software Foundation, and
@@ -160,7 +161,7 @@ static __initdata struct tegra_pingroup_config seaboard_pinmux[] = {
-static struct tegra_gpio_table gpio_table[] = {
+static struct tegra_gpio_table common_gpio_table[] = {
{ .gpio = TEGRA_GPIO_SD2_CD, .enable = true },
{ .gpio = TEGRA_GPIO_SD2_WP, .enable = true },
{ .gpio = TEGRA_GPIO_SD2_POWER, .enable = true },
@@ -171,12 +172,17 @@ static struct tegra_gpio_table gpio_table[] = {
{ .gpio = TEGRA_GPIO_USB1, .enable = true },
};
-void __init seaboard_pinmux_init(void)
+static void __init seaboard_common_pinmux_init(void)
{
tegra_pinmux_config_table(seaboard_pinmux, ARRAY_SIZE(seaboard_pinmux));
tegra_drive_pinmux_config_table(seaboard_drive_pinmux,
ARRAY_SIZE(seaboard_drive_pinmux));
- tegra_gpio_config(gpio_table, ARRAY_SIZE(gpio_table));
+ tegra_gpio_config(common_gpio_table, ARRAY_SIZE(common_gpio_table));
+}
+
+void __init seaboard_pinmux_init(void)
+{
+ seaboard_common_pinmux_init();
}
--
1.7.1
^ permalink raw reply related
* [PATCH 0/3] Add support for tegra2 based ventana board
From: Peter De Schrijver @ 2011-09-22 10:13 UTC (permalink / raw)
To: linux-arm-kernel
This patch set adds support for the tegra2 based ventana development board.
Boot tested on ventana.
Peter De Schrijver (3):
arm/tegra: prepare Seaboard pinmux code for derived boards
arm/tegra: add support for ventana pinmuxing
arm/tegra: device tree support for ventana board
arch/arm/boot/dts/tegra-ventana.dts | 32 ++++++++++++++
arch/arm/mach-tegra/Kconfig | 6 +++
arch/arm/mach-tegra/Makefile.boot | 1 +
arch/arm/mach-tegra/board-dt.c | 5 ++-
arch/arm/mach-tegra/board-seaboard-pinmux.c | 63 ++++++++++++++++++++++++---
5 files changed, 100 insertions(+), 7 deletions(-)
create mode 100644 arch/arm/boot/dts/tegra-ventana.dts
^ permalink raw reply
* [PATCH] clk: provide prepare/unprepare functions
From: Russell King - ARM Linux @ 2011-09-22 10:10 UTC (permalink / raw)
To: linux-arm-kernel
As discussed previously, there's the need on some platforms to run some
parts of clk_enable() in contexts which can schedule. The solution
which was agreed upon was to provide clk_prepare() and clk_unprepare()
to contain this parts, while clk_enable() and clk_disable() perform
the atomic part.
This patch provides a common definition for clk_prepare() and
clk_unprepare() in linux/clk.h, and provides an upgrade path for
existing implementation and drivers: drivers can start using
clk_prepare() and clk_unprepare() once this patch is merged without
having to wait for platform support. Platforms can then start to
provide these additional functions.
Eventually, HAVE_CLK_PREPARE will be removed from the kernel, and
everyone will have to provide these new APIs.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---
include/linux/clk.h | 38 ++++++++++++++++++++++++++++++++++++++
1 file changed, 38 insertions(+)
diff --git a/include/linux/clk.h b/include/linux/clk.h
index 1d37f42..c7eb17d 100644
--- a/include/linux/clk.h
+++ b/include/linux/clk.h
@@ -11,6 +11,8 @@
#ifndef __LINUX_CLK_H
#define __LINUX_CLK_H
+#include <linux/kernel.h>
+
struct device;
/*
@@ -41,11 +43,29 @@ struct clk;
struct clk *clk_get(struct device *dev, const char *id);
/**
+ * clk_prepare - prepare a clock source
+ * @clk: clock source
+ *
+ * This prepares the clock source for use.
+ */
+#ifdef CONFIG_HAVE_CLK_PREPARE
+int clk_prepare(struct clk *clk);
+#else
+static inline int clk_prepare(struct clk *clk)
+{
+ might_sleep();
+ return 0;
+}
+#endif
+
+/**
* clk_enable - inform the system when the clock source should be running.
* @clk: clock source
*
* If the clock can not be enabled/disabled, this should return success.
*
+ * May be called from atomic contexts.
+ *
* Returns success (0) or negative errno.
*/
int clk_enable(struct clk *clk);
@@ -57,6 +77,8 @@ int clk_enable(struct clk *clk);
* Inform the system that a clock source is no longer required by
* a driver and may be shut down.
*
+ * May be called from atomic contexts.
+ *
* Implementation detail: if the clock source is shared between
* multiple drivers, clk_enable() calls must be balanced by the
* same number of clk_disable() calls for the clock source to be
@@ -64,6 +86,21 @@ int clk_enable(struct clk *clk);
*/
void clk_disable(struct clk *clk);
+/**
+ * clk_unprepare - undo preparation of a clock source
+ * @clk: clock source
+ *
+ * This prepares the clock source for use.
+ */
+#ifdef CONFIG_HAVE_CLK_PREPARE
+void clk_unprepare(struct clk *clk);
+#else
+static inline void clk_unprepare(struct clk *clk)
+{
+ might_sleep();
+}
+#endif
+
/**
* clk_get_rate - obtain the current clock rate (in Hz) for a clock source.
* This is only valid once the clock source has been enabled.
^ permalink raw reply related
* [RESEND PATCH 2/2] s5p-tv: Add PM_RUNTIME dependency
From: Marek Szyprowski @ 2011-09-22 10:05 UTC (permalink / raw)
To: linux-arm-kernel
In-Reply-To: <1316670891-1672-1-git-send-email-hatim.rv@samsung.com>
Hello,
On Thursday, September 22, 2011 7:55 AM Hatim Ali wrote:
> The TVOUT driver requires PM_RUNTIME support for proper clock
> enabling.
>
> Signed-off-by: Hatim Ali <hatim.rv@samsung.com>
I will take this patch to our v4l fixes branch. Thanks for your contribution.
> ---
> drivers/media/video/s5p-tv/Kconfig | 2 +-
> 1 files changed, 1 insertions(+), 1 deletions(-)
>
> diff --git a/drivers/media/video/s5p-tv/Kconfig b/drivers/media/video/s5p-tv/Kconfig
> index 9c37dee..f2a0977 100644
> --- a/drivers/media/video/s5p-tv/Kconfig
> +++ b/drivers/media/video/s5p-tv/Kconfig
> @@ -8,7 +8,7 @@
>
> config VIDEO_SAMSUNG_S5P_TV
> bool "Samsung TV driver for S5P platform (experimental)"
> - depends on PLAT_S5P
> + depends on PLAT_S5P && PM_RUNTIME
> depends on EXPERIMENTAL
> default n
> ---help---
Best regards
--
Marek Szyprowski
Samsung Poland R&D Center
^ permalink raw reply
* [PATCH] arm: Add unwinding annotations for 64bit division functions
From: Catalin Marinas @ 2011-09-22 9:48 UTC (permalink / raw)
To: linux-arm-kernel
In-Reply-To: <1316676488.2053.9.camel@linaro1>
On 22 September 2011 08:28, Jon Medhurst (Tixy) <jon.medhurst@linaro.org> wrote:
> On Wed, 2011-09-21 at 12:55 +0100, Russell King - ARM Linux wrote:
>> Instructions such as VFP, kprobes tracing, etc are expected fault
>> locations, and those are fairly well controlled where they can be placed.
>> With things like ftrace, it certainly is the case that the unwinder can
>> theoretically be called from almost anywhere in a function.
>
> Actually, kprobes can be places on any instruction in the kernel that
> isn't in the section .kprobes.text.
>
> I also strongly suspect that stack unwinding won't happen correctly
> across the boundary between the kprobes handling code and the function
> which was probed - there's an awful lot of stack jiggery pokery going on
> there.
Are people most likely to place kprobes on the first instruction of a
function? We could improve things a bit in the unwinder and assume
that if the fault address is the same as the .fnstart address, the
return value is always in LR and the SP not affected (that's unwinding
bytecode 0xb0). For a few instructions into the function prologue we
can't reliably get the unwinding information.
--
Catalin
^ permalink raw reply
* [PATCH 53/57] sound: irq: Remove IRQF_DISABLED
From: Takashi Iwai @ 2011-09-22 9:42 UTC (permalink / raw)
To: linux-arm-kernel
In-Reply-To: <alpine.LFD.2.02.1109211154280.2723@ionos>
At Wed, 21 Sep 2011 11:55:36 +0200 (CEST),
Thomas Gleixner wrote:
>
> > > We run all interrupt handlers with interrupts disabled
> > > and we even check and yell when an interrupt handler
> > > returns with interrupts enabled (see commit [b738a50a:
> > > genirq: Warn when handler enables interrupts]).
> > >
> > > So now this flag is a NOOP and can be removed.
> > >
> > > Signed-off-by: Yong Zhang <yong.zhang0@gmail.com>
> > > Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
> >
> > Do you want to merge by yourself or shall I take it to sound git tree?
> > Since IRQF_DISABLED isn't used, it can be applied safely in 3.1-based
> > tree, right?
>
> Yes, please go ahead. I'll pick up the leftovers.
OK, I applied Yong's (fixed) patch now to sound git tree.
thanks,
Takashi
^ permalink raw reply
* [PATCH] ARM i.MX avic: convert to use generic irq chip
From: Hui Wang @ 2011-09-22 9:40 UTC (permalink / raw)
To: linux-arm-kernel
Convert i.MX avic irq handler to use generic irq chip. This not only
provides a cleanup implementation of irq chip handler, but also
implements suspend/resume interface with the help of generic irq chip
interface.
Change mxc_irq_chip to a new structure mxc_extra_irq to handle fiq
and priority functions.
Signed-off-by: Hui Wang <jason77.wang@gmail.com>
---
This patch is basing on imx-features branch of linux-pengu. Have
validated this patch on 31pdk and 35pdk platforms, while have no
chance to validate it on mx2 and mx1 platforms since we don't have
those hardwares.
The purpose of changing avic to use generic irq chip is because i
added suspend/resume functions for 35pdk, and generic irq chip
naturally has suspend/resume interface. If this patch can be
accepted, i will continue to send out those 35pdk pm patches.
arch/arm/plat-mxc/avic.c | 79 ++++++++++++++++++++++++++++------------
arch/arm/plat-mxc/irq-common.c | 21 ++++++-----
arch/arm/plat-mxc/irq-common.h | 3 +-
arch/arm/plat-mxc/tzic.c | 8 ++++-
4 files changed, 75 insertions(+), 36 deletions(-)
diff --git a/arch/arm/plat-mxc/avic.c b/arch/arm/plat-mxc/avic.c
index 55d2534..846636a 100644
--- a/arch/arm/plat-mxc/avic.c
+++ b/arch/arm/plat-mxc/avic.c
@@ -50,6 +50,8 @@
void __iomem *avic_base;
+static u32 avic_saved_mask_reg[2];
+
#ifdef CONFIG_MXC_IRQ_PRIOR
static int avic_irq_set_priority(unsigned char irq, unsigned char prio)
{
@@ -90,24 +92,8 @@ static int avic_set_irq_fiq(unsigned int irq, unsigned int type)
}
#endif /* CONFIG_FIQ */
-/* Disable interrupt number "irq" in the AVIC */
-static void mxc_mask_irq(struct irq_data *d)
-{
- __raw_writel(d->irq, avic_base + AVIC_INTDISNUM);
-}
-
-/* Enable interrupt number "irq" in the AVIC */
-static void mxc_unmask_irq(struct irq_data *d)
-{
- __raw_writel(d->irq, avic_base + AVIC_INTENNUM);
-}
-static struct mxc_irq_chip mxc_avic_chip = {
- .base = {
- .irq_ack = mxc_mask_irq,
- .irq_mask = mxc_mask_irq,
- .irq_unmask = mxc_unmask_irq,
- },
+static struct mxc_extra_irq avic_extra_irq = {
#ifdef CONFIG_MXC_IRQ_PRIOR
.set_priority = avic_irq_set_priority,
#endif
@@ -116,6 +102,56 @@ static struct mxc_irq_chip mxc_avic_chip = {
#endif
};
+
+#ifdef CONFIG_PM
+static void avic_irq_suspend(struct irq_data *d)
+{
+ struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
+ struct irq_chip_type *ct = gc->chip_types;
+ int idx = gc->irq_base >> 5;
+
+ avic_saved_mask_reg[idx] = __raw_readl(avic_base + ct->regs.mask);
+ __raw_writel(gc->wake_active, avic_base + ct->regs.mask);
+}
+
+static void avic_irq_resume(struct irq_data *d)
+{
+ struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
+ struct irq_chip_type *ct = gc->chip_types;
+ int idx = gc->irq_base >> 5;
+
+ __raw_writel(avic_saved_mask_reg[idx], avic_base + ct->regs.mask);
+}
+
+#else
+#define avic_irq_suspend NULL
+#define avic_irq_resume NULL
+#endif
+
+static __init void avic_init_gc(unsigned int irq_start)
+{
+ struct irq_chip_generic *gc;
+ struct irq_chip_type *ct;
+ int idx = irq_start >> 5;
+
+ gc = irq_alloc_generic_chip("mxc-avic", 1, irq_start, avic_base,
+ handle_level_irq);
+ gc->private = &avic_extra_irq;
+ gc->wake_enabled = IRQ_MSK(32);
+
+ ct = gc->chip_types;
+ ct->chip.irq_mask = irq_gc_mask_clr_bit;
+ ct->chip.irq_unmask = irq_gc_mask_set_bit;
+ ct->chip.irq_ack = irq_gc_mask_clr_bit;
+ ct->chip.irq_set_wake = irq_gc_set_wake;
+ ct->chip.irq_suspend = avic_irq_suspend;
+ ct->chip.irq_resume = avic_irq_resume;
+ ct->regs.mask = !idx ? AVIC_INTENABLEL : AVIC_INTENABLEH;
+ ct->regs.ack = ct->regs.mask;
+
+ irq_setup_generic_chip(gc, IRQ_MSK(32), 0, IRQ_NOREQUEST, 0);
+}
+
/*
* This function initializes the AVIC hardware and disables all the
* interrupts. It registers the interrupt enable and disable functions
@@ -140,11 +176,9 @@ void __init mxc_init_irq(void __iomem *irqbase)
/* all IRQ no FIQ */
__raw_writel(0, avic_base + AVIC_INTTYPEH);
__raw_writel(0, avic_base + AVIC_INTTYPEL);
- for (i = 0; i < AVIC_NUM_IRQS; i++) {
- irq_set_chip_and_handler(i, &mxc_avic_chip.base,
- handle_level_irq);
- set_irq_flags(i, IRQF_VALID);
- }
+
+ for (i = 0; i < AVIC_NUM_IRQS; i += 32)
+ avic_init_gc(i);
/* Set default priority value (0) for all IRQ's */
for (i = 0; i < 8; i++)
@@ -157,4 +191,3 @@ void __init mxc_init_irq(void __iomem *irqbase)
printk(KERN_INFO "MXC IRQ initialized\n");
}
-
diff --git a/arch/arm/plat-mxc/irq-common.c b/arch/arm/plat-mxc/irq-common.c
index 96953e2..b6e1145 100644
--- a/arch/arm/plat-mxc/irq-common.c
+++ b/arch/arm/plat-mxc/irq-common.c
@@ -23,17 +23,17 @@
int imx_irq_set_priority(unsigned char irq, unsigned char prio)
{
- struct mxc_irq_chip *chip;
- struct irq_chip *base;
+ struct irq_chip_generic *gc;
+ struct mxc_extra_irq *exirq;
int ret;
ret = -ENOSYS;
- base = irq_get_chip(irq);
- if (base) {
- chip = container_of(base, struct mxc_irq_chip, base);
- if (chip->set_priority)
- ret = chip->set_priority(irq, prio);
+ gc = irq_get_chip_data(irq);
+ if (gc && gc->private) {
+ exirq = gc->private;
+ if (exirq->set_priority)
+ ret = exirq->set_priority(irq, prio);
}
return ret;
@@ -43,15 +43,16 @@ EXPORT_SYMBOL(imx_irq_set_priority);
int mxc_set_irq_fiq(unsigned int irq, unsigned int type)
{
struct irq_chip_generic *gc;
- int (*set_irq_fiq)(unsigned int, unsigned int);
+ struct mxc_extra_irq *exirq;
int ret;
ret = -ENOSYS;
gc = irq_get_chip_data(irq);
if (gc && gc->private) {
- set_irq_fiq = gc->private;
- ret = set_irq_fiq(irq, type);
+ exirq = gc->private;
+ if (exirq->set_irq_fiq)
+ ret = exirq->set_irq_fiq(irq, type);
}
return ret;
diff --git a/arch/arm/plat-mxc/irq-common.h b/arch/arm/plat-mxc/irq-common.h
index 7203543..6ccb3a1 100644
--- a/arch/arm/plat-mxc/irq-common.h
+++ b/arch/arm/plat-mxc/irq-common.h
@@ -19,9 +19,8 @@
#ifndef __PLAT_MXC_IRQ_COMMON_H__
#define __PLAT_MXC_IRQ_COMMON_H__
-struct mxc_irq_chip
+struct mxc_extra_irq
{
- struct irq_chip base;
int (*set_priority)(unsigned char irq, unsigned char prio);
int (*set_irq_fiq)(unsigned int irq, unsigned int type);
};
diff --git a/arch/arm/plat-mxc/tzic.c b/arch/arm/plat-mxc/tzic.c
index f257fcc..a580750 100644
--- a/arch/arm/plat-mxc/tzic.c
+++ b/arch/arm/plat-mxc/tzic.c
@@ -74,6 +74,12 @@ static int tzic_set_irq_fiq(unsigned int irq, unsigned int type)
static unsigned int *wakeup_intr[4];
+static struct mxc_extra_irq tzic_extra_irq = {
+#ifdef CONFIG_FIQ
+ .set_irq_fiq = tzic_set_irq_fiq,
+#endif
+};
+
static __init void tzic_init_gc(unsigned int irq_start)
{
struct irq_chip_generic *gc;
@@ -82,7 +88,7 @@ static __init void tzic_init_gc(unsigned int irq_start)
gc = irq_alloc_generic_chip("tzic", 1, irq_start, tzic_base,
handle_level_irq);
- gc->private = tzic_set_irq_fiq;
+ gc->private = &tzic_extra_irq;
gc->wake_enabled = IRQ_MSK(32);
wakeup_intr[idx] = &gc->wake_active;
--
1.7.6
^ permalink raw reply related
* [PATCH V7 1/5] AHCI Add the AHCI SATA feature on the MX53 platforms
From: Hector Oron @ 2011-09-22 9:30 UTC (permalink / raw)
To: linux-arm-kernel
In-Reply-To: <CAMPhdO-f2RHtZ0RdV_wGZvohMT85Q3JzTePaD9w73shGpWkP6g@mail.gmail.com>
Hello,
Apologies for late reply.
2011/9/6 Eric Miao <eric.miao@linaro.org>:
> On Tue, Sep 6, 2011 at 1:46 AM, Hector Oron <hector.oron@gmail.com> wrote:
>> 2011/9/1 Richard Zhu <richard.zhu@linaro.org>:
>> Here is my complete dmesg. The system seems to work fine, it is a
>> 1.0TB WD10TPVT SATA disk in a case which provides eSATA and connected
>> to mx53 LOCO with eSATA-to-SATA cable.
> Is it possible that it's caused by this converter? Do you have a separate
> SATA power supply that could help test the disk directly connected to
> mx53loco?
I think I had a bad configuration setup for my kernel. I have rebuilt
3.1.0-rc6 from Sascha's master git with this patches and now SATA is
working properly I do not see any issue as I did. So, from my side all
is OK now, and I assume I had some missing or conflicting module
setup.
Kind regards and apologies for inconveniences,
--
?H?ctor Or?n ?-.. . -... .. .- -. ? -.. . ...- . .-.. --- .--. . .-.
^ permalink raw reply
* [PATCH 53/55] sound: irq: Remove IRQF_DISABLED
From: Yong Zhang @ 2011-09-22 8:59 UTC (permalink / raw)
To: linux-arm-kernel
In-Reply-To: <1316681962-8217-1-git-send-email-yong.zhang0@gmail.com>
Since commit [e58aa3d2: genirq: Run irq handlers with interrupts disabled],
We run all interrupt handlers with interrupts disabled
and we even check and yell when an interrupt handler
returns with interrupts enabled (see commit [b738a50a:
genirq: Warn when handler enables interrupts]).
So now this flag is a NOOP and can be removed.
Signed-off-by: Yong Zhang <yong.zhang0@gmail.com>
Acked-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
include/sound/initval.h | 2 +-
sound/arm/aaci.c | 2 +-
sound/arm/pxa2xx-ac97-lib.c | 2 +-
sound/drivers/ml403-ac97cr.c | 4 ++--
sound/drivers/mpu401/mpu401_uart.c | 2 +-
sound/drivers/mtpav.c | 2 +-
sound/drivers/serial-u16550.c | 2 +-
sound/isa/ad1816a/ad1816a_lib.c | 2 +-
sound/isa/es1688/es1688_lib.c | 2 +-
sound/isa/es18xx.c | 2 +-
sound/isa/gus/gus_main.c | 2 +-
sound/isa/gus/gusmax.c | 2 +-
sound/isa/gus/interwave.c | 2 +-
sound/isa/opl3sa2.c | 2 +-
sound/isa/opti9xx/opti92x-ad1848.c | 2 +-
sound/isa/sb/sb_common.c | 2 +-
sound/isa/wavefront/wavefront.c | 2 +-
sound/isa/wss/wss_lib.c | 2 +-
sound/mips/au1x00.c | 4 ++--
sound/pci/sis7019.c | 4 ++--
sound/ppc/snd_ps3.c | 2 +-
sound/soc/au1x/dma.c | 2 +-
sound/soc/codecs/tlv320dac33.c | 2 +-
sound/soc/nuc900/nuc900-pcm.c | 2 +-
sound/soc/samsung/ac97.c | 2 +-
sound/soc/sh/fsi.c | 2 +-
sound/soc/txx9/txx9aclc-ac97.c | 2 +-
sound/sparc/amd7930.c | 2 +-
28 files changed, 31 insertions(+), 31 deletions(-)
diff --git a/include/sound/initval.h b/include/sound/initval.h
index 1daa6df..f99a0d2 100644
--- a/include/sound/initval.h
+++ b/include/sound/initval.h
@@ -62,7 +62,7 @@ static int snd_legacy_find_free_irq(int *irq_table)
{
while (*irq_table != -1) {
if (!request_irq(*irq_table, snd_legacy_empty_irq_handler,
- IRQF_DISABLED | IRQF_PROBE_SHARED, "ALSA Test IRQ",
+ IRQF_PROBE_SHARED, "ALSA Test IRQ",
(void *) irq_table)) {
free_irq(*irq_table, (void *) irq_table);
return *irq_table;
diff --git a/sound/arm/aaci.c b/sound/arm/aaci.c
index d0cead3..e518d38 100644
--- a/sound/arm/aaci.c
+++ b/sound/arm/aaci.c
@@ -443,7 +443,7 @@ static int aaci_pcm_open(struct snd_pcm_substream *substream)
mutex_lock(&aaci->irq_lock);
if (!aaci->users++) {
ret = request_irq(aaci->dev->irq[0], aaci_irq,
- IRQF_SHARED | IRQF_DISABLED, DRIVER_NAME, aaci);
+ IRQF_SHARED, DRIVER_NAME, aaci);
if (ret != 0)
aaci->users--;
}
diff --git a/sound/arm/pxa2xx-ac97-lib.c b/sound/arm/pxa2xx-ac97-lib.c
index 88eec38..8ad6535 100644
--- a/sound/arm/pxa2xx-ac97-lib.c
+++ b/sound/arm/pxa2xx-ac97-lib.c
@@ -359,7 +359,7 @@ int __devinit pxa2xx_ac97_hw_probe(struct platform_device *dev)
if (ret)
goto err_clk2;
- ret = request_irq(IRQ_AC97, pxa2xx_ac97_irq, IRQF_DISABLED, "AC97", NULL);
+ ret = request_irq(IRQ_AC97, pxa2xx_ac97_irq, 0, "AC97", NULL);
if (ret < 0)
goto err_irq;
diff --git a/sound/drivers/ml403-ac97cr.c b/sound/drivers/ml403-ac97cr.c
index 5cfcb90..2c7a763 100644
--- a/sound/drivers/ml403-ac97cr.c
+++ b/sound/drivers/ml403-ac97cr.c
@@ -1153,7 +1153,7 @@ snd_ml403_ac97cr_create(struct snd_card *card, struct platform_device *pfdev,
"0x%x done\n", (unsigned int)ml403_ac97cr->port);
/* get irq */
irq = platform_get_irq(pfdev, 0);
- if (request_irq(irq, snd_ml403_ac97cr_irq, IRQF_DISABLED,
+ if (request_irq(irq, snd_ml403_ac97cr_irq, 0,
dev_name(&pfdev->dev), (void *)ml403_ac97cr)) {
snd_printk(KERN_ERR SND_ML403_AC97CR_DRIVER ": "
"unable to grab IRQ %d\n",
@@ -1166,7 +1166,7 @@ snd_ml403_ac97cr_create(struct snd_card *card, struct platform_device *pfdev,
"request (playback) irq %d done\n",
ml403_ac97cr->irq);
irq = platform_get_irq(pfdev, 1);
- if (request_irq(irq, snd_ml403_ac97cr_irq, IRQF_DISABLED,
+ if (request_irq(irq, snd_ml403_ac97cr_irq, 0,
dev_name(&pfdev->dev), (void *)ml403_ac97cr)) {
snd_printk(KERN_ERR SND_ML403_AC97CR_DRIVER ": "
"unable to grab IRQ %d\n",
diff --git a/sound/drivers/mpu401/mpu401_uart.c b/sound/drivers/mpu401/mpu401_uart.c
index 34df505..1cff331 100644
--- a/sound/drivers/mpu401/mpu401_uart.c
+++ b/sound/drivers/mpu401/mpu401_uart.c
@@ -578,7 +578,7 @@ int snd_mpu401_uart_new(struct snd_card *card, int device,
else
mpu->cport = port + 1;
if (irq >= 0) {
- if (request_irq(irq, snd_mpu401_uart_interrupt, IRQF_DISABLED,
+ if (request_irq(irq, snd_mpu401_uart_interrupt, 0,
"MPU401 UART", (void *) mpu)) {
snd_printk(KERN_ERR "mpu401_uart: "
"unable to grab IRQ %d\n", irq);
diff --git a/sound/drivers/mtpav.c b/sound/drivers/mtpav.c
index f50021c..7693079 100644
--- a/sound/drivers/mtpav.c
+++ b/sound/drivers/mtpav.c
@@ -590,7 +590,7 @@ static int __devinit snd_mtpav_get_ISA(struct mtpav * mcard)
return -EBUSY;
}
mcard->port = port;
- if (request_irq(irq, snd_mtpav_irqh, IRQF_DISABLED, "MOTU MTPAV", mcard)) {
+ if (request_irq(irq, snd_mtpav_irqh, 0, "MOTU MTPAV", mcard)) {
snd_printk(KERN_ERR "MTVAP IRQ %d busy\n", irq);
return -EBUSY;
}
diff --git a/sound/drivers/serial-u16550.c b/sound/drivers/serial-u16550.c
index 6c5bf58..85aad43 100644
--- a/sound/drivers/serial-u16550.c
+++ b/sound/drivers/serial-u16550.c
@@ -816,7 +816,7 @@ static int __devinit snd_uart16550_create(struct snd_card *card,
if (irq >= 0 && irq != SNDRV_AUTO_IRQ) {
if (request_irq(irq, snd_uart16550_interrupt,
- IRQF_DISABLED, "Serial MIDI", uart)) {
+ 0, "Serial MIDI", uart)) {
snd_printk(KERN_WARNING
"irq %d busy. Using Polling.\n", irq);
} else {
diff --git a/sound/isa/ad1816a/ad1816a_lib.c b/sound/isa/ad1816a/ad1816a_lib.c
index 05aef8b..177eed3 100644
--- a/sound/isa/ad1816a/ad1816a_lib.c
+++ b/sound/isa/ad1816a/ad1816a_lib.c
@@ -595,7 +595,7 @@ int __devinit snd_ad1816a_create(struct snd_card *card,
snd_ad1816a_free(chip);
return -EBUSY;
}
- if (request_irq(irq, snd_ad1816a_interrupt, IRQF_DISABLED, "AD1816A", (void *) chip)) {
+ if (request_irq(irq, snd_ad1816a_interrupt, 0, "AD1816A", (void *) chip)) {
snd_printk(KERN_ERR "ad1816a: can't grab IRQ %d\n", irq);
snd_ad1816a_free(chip);
return -EBUSY;
diff --git a/sound/isa/es1688/es1688_lib.c b/sound/isa/es1688/es1688_lib.c
index 0767620..d3eab6f 100644
--- a/sound/isa/es1688/es1688_lib.c
+++ b/sound/isa/es1688/es1688_lib.c
@@ -661,7 +661,7 @@ int snd_es1688_create(struct snd_card *card,
snd_printk(KERN_ERR "es1688: can't grab port 0x%lx\n", port + 4);
return -EBUSY;
}
- if (request_irq(irq, snd_es1688_interrupt, IRQF_DISABLED, "ES1688", (void *) chip)) {
+ if (request_irq(irq, snd_es1688_interrupt, 0, "ES1688", (void *) chip)) {
snd_printk(KERN_ERR "es1688: can't grab IRQ %d\n", irq);
return -EBUSY;
}
diff --git a/sound/isa/es18xx.c b/sound/isa/es18xx.c
index aeee8f8..bf6ad0b 100644
--- a/sound/isa/es18xx.c
+++ b/sound/isa/es18xx.c
@@ -1805,7 +1805,7 @@ static int __devinit snd_es18xx_new_device(struct snd_card *card,
return -EBUSY;
}
- if (request_irq(irq, snd_es18xx_interrupt, IRQF_DISABLED, "ES18xx",
+ if (request_irq(irq, snd_es18xx_interrupt, 0, "ES18xx",
(void *) card)) {
snd_es18xx_free(card);
snd_printk(KERN_ERR PFX "unable to grap IRQ %d\n", irq);
diff --git a/sound/isa/gus/gus_main.c b/sound/isa/gus/gus_main.c
index 12eb98f..3167e5a 100644
--- a/sound/isa/gus/gus_main.c
+++ b/sound/isa/gus/gus_main.c
@@ -180,7 +180,7 @@ int snd_gus_create(struct snd_card *card,
snd_gus_free(gus);
return -EBUSY;
}
- if (irq >= 0 && request_irq(irq, snd_gus_interrupt, IRQF_DISABLED, "GUS GF1", (void *) gus)) {
+ if (irq >= 0 && request_irq(irq, snd_gus_interrupt, 0, "GUS GF1", (void *) gus)) {
snd_printk(KERN_ERR "gus: can't grab irq %d\n", irq);
snd_gus_free(gus);
return -EBUSY;
diff --git a/sound/isa/gus/gusmax.c b/sound/isa/gus/gusmax.c
index 3e4a58b..c43faa0 100644
--- a/sound/isa/gus/gusmax.c
+++ b/sound/isa/gus/gusmax.c
@@ -291,7 +291,7 @@ static int __devinit snd_gusmax_probe(struct device *pdev, unsigned int dev)
goto _err;
}
- if (request_irq(xirq, snd_gusmax_interrupt, IRQF_DISABLED, "GUS MAX", (void *)maxcard)) {
+ if (request_irq(xirq, snd_gusmax_interrupt, 0, "GUS MAX", (void *)maxcard)) {
snd_printk(KERN_ERR PFX "unable to grab IRQ %d\n", xirq);
err = -EBUSY;
goto _err;
diff --git a/sound/isa/gus/interwave.c b/sound/isa/gus/interwave.c
index c7b80e4..5f869a3 100644
--- a/sound/isa/gus/interwave.c
+++ b/sound/isa/gus/interwave.c
@@ -684,7 +684,7 @@ static int __devinit snd_interwave_probe(struct snd_card *card, int dev)
if ((err = snd_gus_initialize(gus)) < 0)
return err;
- if (request_irq(xirq, snd_interwave_interrupt, IRQF_DISABLED,
+ if (request_irq(xirq, snd_interwave_interrupt, 0,
"InterWave", iwcard)) {
snd_printk(KERN_ERR PFX "unable to grab IRQ %d\n", xirq);
return -EBUSY;
diff --git a/sound/isa/opl3sa2.c b/sound/isa/opl3sa2.c
index de99f47..bbafb0b 100644
--- a/sound/isa/opl3sa2.c
+++ b/sound/isa/opl3sa2.c
@@ -667,7 +667,7 @@ static int __devinit snd_opl3sa2_probe(struct snd_card *card, int dev)
err = snd_opl3sa2_detect(card);
if (err < 0)
return err;
- err = request_irq(xirq, snd_opl3sa2_interrupt, IRQF_DISABLED,
+ err = request_irq(xirq, snd_opl3sa2_interrupt, 0,
"OPL3-SA2", card);
if (err) {
snd_printk(KERN_ERR PFX "can't grab IRQ %d\n", xirq);
diff --git a/sound/isa/opti9xx/opti92x-ad1848.c b/sound/isa/opti9xx/opti92x-ad1848.c
index 346e12b..6dbbfa7 100644
--- a/sound/isa/opti9xx/opti92x-ad1848.c
+++ b/sound/isa/opti9xx/opti92x-ad1848.c
@@ -892,7 +892,7 @@ static int __devinit snd_opti9xx_probe(struct snd_card *card)
#endif
#ifdef OPTi93X
error = request_irq(irq, snd_opti93x_interrupt,
- IRQF_DISABLED, DEV_NAME" - WSS", chip);
+ 0, DEV_NAME" - WSS", chip);
if (error < 0) {
snd_printk(KERN_ERR "opti9xx: can't grab IRQ %d\n", irq);
return error;
diff --git a/sound/isa/sb/sb_common.c b/sound/isa/sb/sb_common.c
index eae6c1c..d2e1921 100644
--- a/sound/isa/sb/sb_common.c
+++ b/sound/isa/sb/sb_common.c
@@ -240,7 +240,7 @@ int snd_sbdsp_create(struct snd_card *card,
if (request_irq(irq, irq_handler,
(hardware == SB_HW_ALS4000 ||
hardware == SB_HW_CS5530) ?
- IRQF_SHARED : IRQF_DISABLED,
+ IRQF_SHARED : 0,
"SoundBlaster", (void *) chip)) {
snd_printk(KERN_ERR "sb: can't grab irq %d\n", irq);
snd_sbdsp_free(chip);
diff --git a/sound/isa/wavefront/wavefront.c b/sound/isa/wavefront/wavefront.c
index 83f291d..8714297 100644
--- a/sound/isa/wavefront/wavefront.c
+++ b/sound/isa/wavefront/wavefront.c
@@ -418,7 +418,7 @@ snd_wavefront_probe (struct snd_card *card, int dev)
return -EBUSY;
}
if (request_irq(ics2115_irq[dev], snd_wavefront_ics2115_interrupt,
- IRQF_DISABLED, "ICS2115", acard)) {
+ 0, "ICS2115", acard)) {
snd_printk(KERN_ERR "unable to use ICS2115 IRQ %d\n", ics2115_irq[dev]);
return -EBUSY;
}
diff --git a/sound/isa/wss/wss_lib.c b/sound/isa/wss/wss_lib.c
index 2a42cc3..7277c5b 100644
--- a/sound/isa/wss/wss_lib.c
+++ b/sound/isa/wss/wss_lib.c
@@ -1833,7 +1833,7 @@ int snd_wss_create(struct snd_card *card,
}
chip->cport = cport;
if (!(hwshare & WSS_HWSHARE_IRQ))
- if (request_irq(irq, snd_wss_interrupt, IRQF_DISABLED,
+ if (request_irq(irq, snd_wss_interrupt, 0,
"WSS", (void *) chip)) {
snd_printk(KERN_ERR "wss: can't grab IRQ %d\n", irq);
snd_wss_free(chip);
diff --git a/sound/mips/au1x00.c b/sound/mips/au1x00.c
index 446cf97..7567ebd 100644
--- a/sound/mips/au1x00.c
+++ b/sound/mips/au1x00.c
@@ -465,13 +465,13 @@ snd_au1000_pcm_new(struct snd_au1000 *au1000)
flags = claim_dma_lock();
if ((au1000->stream[PLAYBACK]->dma = request_au1000_dma(DMA_ID_AC97C_TX,
- "AC97 TX", au1000_dma_interrupt, IRQF_DISABLED,
+ "AC97 TX", au1000_dma_interrupt, 0,
au1000->stream[PLAYBACK])) < 0) {
release_dma_lock(flags);
return -EBUSY;
}
if ((au1000->stream[CAPTURE]->dma = request_au1000_dma(DMA_ID_AC97C_RX,
- "AC97 RX", au1000_dma_interrupt, IRQF_DISABLED,
+ "AC97 RX", au1000_dma_interrupt, 0,
au1000->stream[CAPTURE])) < 0){
release_dma_lock(flags);
return -EBUSY;
diff --git a/sound/pci/sis7019.c b/sound/pci/sis7019.c
index bcf6152..5ffb20b 100644
--- a/sound/pci/sis7019.c
+++ b/sound/pci/sis7019.c
@@ -1234,7 +1234,7 @@ static int sis_resume(struct pci_dev *pci)
goto error;
}
- if (request_irq(pci->irq, sis_interrupt, IRQF_DISABLED|IRQF_SHARED,
+ if (request_irq(pci->irq, sis_interrupt, IRQF_SHARED,
KBUILD_MODNAME, sis)) {
printk(KERN_ERR "sis7019: unable to regain IRQ %d\n", pci->irq);
goto error;
@@ -1340,7 +1340,7 @@ static int __devinit sis_chip_create(struct snd_card *card,
if (rc)
goto error_out_cleanup;
- if (request_irq(pci->irq, sis_interrupt, IRQF_DISABLED|IRQF_SHARED,
+ if (request_irq(pci->irq, sis_interrupt, IRQF_SHARED,
KBUILD_MODNAME, sis)) {
printk(KERN_ERR "unable to allocate irq %d\n", sis->irq);
goto error_out_cleanup;
diff --git a/sound/ppc/snd_ps3.c b/sound/ppc/snd_ps3.c
index bc823a5..775bd95 100644
--- a/sound/ppc/snd_ps3.c
+++ b/sound/ppc/snd_ps3.c
@@ -845,7 +845,7 @@ static int __devinit snd_ps3_allocate_irq(void)
return ret;
}
- ret = request_irq(the_card.irq_no, snd_ps3_interrupt, IRQF_DISABLED,
+ ret = request_irq(the_card.irq_no, snd_ps3_interrupt, 0,
SND_PS3_DRIVER_NAME, &the_card);
if (ret) {
pr_info("%s: request_irq failed (%d)\n", __func__, ret);
diff --git a/sound/soc/au1x/dma.c b/sound/soc/au1x/dma.c
index 7aa5b76..177f713 100644
--- a/sound/soc/au1x/dma.c
+++ b/sound/soc/au1x/dma.c
@@ -211,7 +211,7 @@ static int alchemy_pcm_open(struct snd_pcm_substream *substream)
/* DMA setup */
name = (s == SNDRV_PCM_STREAM_PLAYBACK) ? "audio-tx" : "audio-rx";
ctx->stream[s].dma = request_au1000_dma(dmaids[s], name,
- au1000_dma_interrupt, IRQF_DISABLED,
+ au1000_dma_interrupt, 0,
&ctx->stream[s]);
set_dma_mode(ctx->stream[s].dma,
get_dma_mode(ctx->stream[s].dma) & ~DMA_NC);
diff --git a/sound/soc/codecs/tlv320dac33.c b/sound/soc/codecs/tlv320dac33.c
index faa5e9f..243d177 100644
--- a/sound/soc/codecs/tlv320dac33.c
+++ b/sound/soc/codecs/tlv320dac33.c
@@ -1431,7 +1431,7 @@ static int dac33_soc_probe(struct snd_soc_codec *codec)
/* Check if the IRQ number is valid and request it */
if (dac33->irq >= 0) {
ret = request_irq(dac33->irq, dac33_interrupt_handler,
- IRQF_TRIGGER_RISING | IRQF_DISABLED,
+ IRQF_TRIGGER_RISING,
codec->name, codec);
if (ret < 0) {
dev_err(codec->dev, "Could not request IRQ%d (%d)\n",
diff --git a/sound/soc/nuc900/nuc900-pcm.c b/sound/soc/nuc900/nuc900-pcm.c
index e46d551..865b288 100644
--- a/sound/soc/nuc900/nuc900-pcm.c
+++ b/sound/soc/nuc900/nuc900-pcm.c
@@ -268,7 +268,7 @@ static int nuc900_dma_open(struct snd_pcm_substream *substream)
nuc900_audio = nuc900_ac97_data;
if (request_irq(nuc900_audio->irq_num, nuc900_dma_interrupt,
- IRQF_DISABLED, "nuc900-dma", substream))
+ 0, "nuc900-dma", substream))
return -EBUSY;
runtime->private_data = nuc900_audio;
diff --git a/sound/soc/samsung/ac97.c b/sound/soc/samsung/ac97.c
index b4f9b00..41b387b 100644
--- a/sound/soc/samsung/ac97.c
+++ b/sound/soc/samsung/ac97.c
@@ -450,7 +450,7 @@ static __devinit int s3c_ac97_probe(struct platform_device *pdev)
}
ret = request_irq(irq_res->start, s3c_ac97_irq,
- IRQF_DISABLED, "AC97", NULL);
+ 0, "AC97", NULL);
if (ret < 0) {
dev_err(&pdev->dev, "ac97: interrupt request failed.\n");
goto err4;
diff --git a/sound/soc/sh/fsi.c b/sound/soc/sh/fsi.c
index 8e112cc..1493ebf 100644
--- a/sound/soc/sh/fsi.c
+++ b/sound/soc/sh/fsi.c
@@ -1285,7 +1285,7 @@ static int fsi_probe(struct platform_device *pdev)
pm_runtime_enable(&pdev->dev);
dev_set_drvdata(&pdev->dev, master);
- ret = request_irq(irq, &fsi_interrupt, IRQF_DISABLED,
+ ret = request_irq(irq, &fsi_interrupt, 0,
id_entry->name, master);
if (ret) {
dev_err(&pdev->dev, "irq request err\n");
diff --git a/sound/soc/txx9/txx9aclc-ac97.c b/sound/soc/txx9/txx9aclc-ac97.c
index 743d07b..a4e3f55 100644
--- a/sound/soc/txx9/txx9aclc-ac97.c
+++ b/sound/soc/txx9/txx9aclc-ac97.c
@@ -201,7 +201,7 @@ static int __devinit txx9aclc_ac97_dev_probe(struct platform_device *pdev)
if (!drvdata->base)
return -EBUSY;
err = devm_request_irq(&pdev->dev, irq, txx9aclc_ac97_irq,
- IRQF_DISABLED, dev_name(&pdev->dev), drvdata);
+ 0, dev_name(&pdev->dev), drvdata);
if (err < 0)
return err;
diff --git a/sound/sparc/amd7930.c b/sound/sparc/amd7930.c
index ad7d4d7..f036776 100644
--- a/sound/sparc/amd7930.c
+++ b/sound/sparc/amd7930.c
@@ -962,7 +962,7 @@ static int __devinit snd_amd7930_create(struct snd_card *card,
amd7930_idle(amd);
if (request_irq(irq, snd_amd7930_interrupt,
- IRQF_DISABLED | IRQF_SHARED, "amd7930", amd)) {
+ IRQF_SHARED, "amd7930", amd)) {
snd_printk(KERN_ERR "amd7930-%d: Unable to grab IRQ %d\n",
dev, irq);
snd_amd7930_free(amd);
--
1.7.4.1
^ permalink raw reply related
* [PATCH 51/55] watchdog: irq: Remove IRQF_DISABLED
From: Yong Zhang @ 2011-09-22 8:59 UTC (permalink / raw)
To: linux-arm-kernel
In-Reply-To: <1316681962-8217-1-git-send-email-yong.zhang0@gmail.com>
Since commit [e58aa3d2: genirq: Run irq handlers with interrupts disabled],
We run all interrupt handlers with interrupts disabled
and we even check and yell when an interrupt handler
returns with interrupts enabled (see commit [b738a50a:
genirq: Warn when handler enables interrupts]).
So now this flag is a NOOP and can be removed.
Signed-off-by: Yong Zhang <yong.zhang0@gmail.com>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
---
drivers/watchdog/coh901327_wdt.c | 2 +-
drivers/watchdog/eurotechwdt.c | 2 +-
drivers/watchdog/mpcore_wdt.c | 3 +--
drivers/watchdog/octeon-wdt-main.c | 2 +-
drivers/watchdog/sb_wdog.c | 4 ++--
drivers/watchdog/wdt.c | 2 +-
drivers/watchdog/wdt_pci.c | 2 +-
7 files changed, 8 insertions(+), 9 deletions(-)
diff --git a/drivers/watchdog/coh901327_wdt.c b/drivers/watchdog/coh901327_wdt.c
index 9291506..03f449a 100644
--- a/drivers/watchdog/coh901327_wdt.c
+++ b/drivers/watchdog/coh901327_wdt.c
@@ -429,7 +429,7 @@ static int __init coh901327_probe(struct platform_device *pdev)
writew(U300_WDOG_SR_RESET_STATUS_RESET, virtbase + U300_WDOG_SR);
irq = platform_get_irq(pdev, 0);
- if (request_irq(irq, coh901327_interrupt, IRQF_DISABLED,
+ if (request_irq(irq, coh901327_interrupt, 0,
DRV_NAME " Bark", pdev)) {
ret = -EIO;
goto out_no_irq;
diff --git a/drivers/watchdog/eurotechwdt.c b/drivers/watchdog/eurotechwdt.c
index f1d1da6..41018d4 100644
--- a/drivers/watchdog/eurotechwdt.c
+++ b/drivers/watchdog/eurotechwdt.c
@@ -427,7 +427,7 @@ static int __init eurwdt_init(void)
{
int ret;
- ret = request_irq(irq, eurwdt_interrupt, IRQF_DISABLED, "eurwdt", NULL);
+ ret = request_irq(irq, eurwdt_interrupt, 0, "eurwdt", NULL);
if (ret) {
printk(KERN_ERR "eurwdt: IRQ %d is not free.\n", irq);
goto out;
diff --git a/drivers/watchdog/mpcore_wdt.c b/drivers/watchdog/mpcore_wdt.c
index 4dc3102..82ccd36 100644
--- a/drivers/watchdog/mpcore_wdt.c
+++ b/drivers/watchdog/mpcore_wdt.c
@@ -367,8 +367,7 @@ static int __devinit mpcore_wdt_probe(struct platform_device *dev)
goto err_misc;
}
- ret = request_irq(wdt->irq, mpcore_wdt_fire, IRQF_DISABLED,
- "mpcore_wdt", wdt);
+ ret = request_irq(wdt->irq, mpcore_wdt_fire, 0, "mpcore_wdt", wdt);
if (ret) {
dev_printk(KERN_ERR, wdt->dev,
"cannot register IRQ%d for watchdog\n", wdt->irq);
diff --git a/drivers/watchdog/octeon-wdt-main.c b/drivers/watchdog/octeon-wdt-main.c
index 945ee83..6019087 100644
--- a/drivers/watchdog/octeon-wdt-main.c
+++ b/drivers/watchdog/octeon-wdt-main.c
@@ -402,7 +402,7 @@ static void octeon_wdt_setup_interrupt(int cpu)
irq = OCTEON_IRQ_WDOG0 + core;
if (request_irq(irq, octeon_wdt_poke_irq,
- IRQF_DISABLED, "octeon_wdt", octeon_wdt_poke_irq))
+ 0, "octeon_wdt", octeon_wdt_poke_irq))
panic("octeon_wdt: Couldn't obtain irq %d", irq);
cpumask_set_cpu(cpu, &irq_enabled_cpus);
diff --git a/drivers/watchdog/sb_wdog.c b/drivers/watchdog/sb_wdog.c
index f31493e..b01a30e 100644
--- a/drivers/watchdog/sb_wdog.c
+++ b/drivers/watchdog/sb_wdog.c
@@ -300,7 +300,7 @@ static int __init sbwdog_init(void)
* get the resources
*/
- ret = request_irq(1, sbwdog_interrupt, IRQF_DISABLED | IRQF_SHARED,
+ ret = request_irq(1, sbwdog_interrupt, IRQF_SHARED,
ident.identity, (void *)user_dog);
if (ret) {
printk(KERN_ERR "%s: failed to request irq 1 - %d\n",
@@ -350,7 +350,7 @@ void platform_wd_setup(void)
{
int ret;
- ret = request_irq(1, sbwdog_interrupt, IRQF_DISABLED | IRQF_SHARED,
+ ret = request_irq(1, sbwdog_interrupt, IRQF_SHARED,
"Kernel Watchdog", IOADDR(A_SCD_WDOG_CFG_0));
if (ret) {
printk(KERN_CRIT
diff --git a/drivers/watchdog/wdt.c b/drivers/watchdog/wdt.c
index bb03e15..d2ef002 100644
--- a/drivers/watchdog/wdt.c
+++ b/drivers/watchdog/wdt.c
@@ -612,7 +612,7 @@ static int __init wdt_init(void)
goto out;
}
- ret = request_irq(irq, wdt_interrupt, IRQF_DISABLED, "wdt501p", NULL);
+ ret = request_irq(irq, wdt_interrupt, 0, "wdt501p", NULL);
if (ret) {
printk(KERN_ERR "wdt: IRQ %d is not free.\n", irq);
goto outreg;
diff --git a/drivers/watchdog/wdt_pci.c b/drivers/watchdog/wdt_pci.c
index 172dad6..e0fc3baa 100644
--- a/drivers/watchdog/wdt_pci.c
+++ b/drivers/watchdog/wdt_pci.c
@@ -643,7 +643,7 @@ static int __devinit wdtpci_init_one(struct pci_dev *dev,
irq = dev->irq;
io = pci_resource_start(dev, 2);
- if (request_irq(irq, wdtpci_interrupt, IRQF_DISABLED | IRQF_SHARED,
+ if (request_irq(irq, wdtpci_interrupt, IRQF_SHARED,
"wdt_pci", &wdtpci_miscdev)) {
printk(KERN_ERR PFX "IRQ %d is not free\n", irq);
goto out_reg;
--
1.7.4.1
^ permalink raw reply related
* [PATCH 49/55] video: irq: Remove IRQF_DISABLED
From: Yong Zhang @ 2011-09-22 8:59 UTC (permalink / raw)
To: linux-arm-kernel
In-Reply-To: <1316681962-8217-1-git-send-email-yong.zhang0@gmail.com>
Since commit [e58aa3d2: genirq: Run irq handlers with interrupts disabled],
We run all interrupt handlers with interrupts disabled
and we even check and yell when an interrupt handler
returns with interrupts enabled (see commit [b738a50a:
genirq: Warn when handler enables interrupts]).
So now this flag is a NOOP and can be removed.
Signed-off-by: Yong Zhang <yong.zhang0@gmail.com>
Acked-by: David Brown <davidb@codeaurora.org>
---
drivers/video/au1200fb.c | 2 +-
drivers/video/bf54x-lq043fb.c | 2 +-
drivers/video/bfin-lq035q1-fb.c | 2 +-
drivers/video/bfin-t350mcqb-fb.c | 2 +-
drivers/video/bfin_adv7393fb.c | 2 +-
drivers/video/mb862xx/mb862xxfbdrv.c | 4 ++--
drivers/video/msm/mddi.c | 2 +-
drivers/video/msm/mdp.c | 2 +-
drivers/video/nuc900fb.c | 2 +-
drivers/video/omap2/displays/panel-taal.c | 2 +-
drivers/video/ps3fb.c | 2 +-
drivers/video/pxa3xx-gcu.c | 2 +-
drivers/video/pxafb.c | 2 +-
drivers/video/s3c2410fb.c | 2 +-
drivers/video/sa1100fb.c | 3 +--
drivers/video/sh_mobile_lcdcfb.c | 2 +-
drivers/video/tmiofb.c | 2 +-
drivers/video/vt8500lcdfb.c | 2 +-
18 files changed, 19 insertions(+), 20 deletions(-)
diff --git a/drivers/video/au1200fb.c b/drivers/video/au1200fb.c
index a19a40e..7200559 100644
--- a/drivers/video/au1200fb.c
+++ b/drivers/video/au1200fb.c
@@ -1673,7 +1673,7 @@ static int __devinit au1200fb_drv_probe(struct platform_device *dev)
/* Now hook interrupt too */
irq = platform_get_irq(dev, 0);
ret = request_irq(irq, au1200fb_handle_irq,
- IRQF_DISABLED | IRQF_SHARED, "lcd", (void *)dev);
+ IRQF_SHARED, "lcd", (void *)dev);
if (ret) {
print_err("fail to request interrupt line %d (err: %d)",
irq, ret);
diff --git a/drivers/video/bf54x-lq043fb.c b/drivers/video/bf54x-lq043fb.c
index 2464b91..56720fb 100644
--- a/drivers/video/bf54x-lq043fb.c
+++ b/drivers/video/bf54x-lq043fb.c
@@ -633,7 +633,7 @@ static int __devinit bfin_bf54x_probe(struct platform_device *pdev)
goto out7;
}
- if (request_irq(info->irq, bfin_bf54x_irq_error, IRQF_DISABLED,
+ if (request_irq(info->irq, bfin_bf54x_irq_error, 0,
"PPI ERROR", info) < 0) {
printk(KERN_ERR DRIVER_NAME
": unable to request PPI ERROR IRQ\n");
diff --git a/drivers/video/bfin-lq035q1-fb.c b/drivers/video/bfin-lq035q1-fb.c
index 23b6c4b..c633068 100644
--- a/drivers/video/bfin-lq035q1-fb.c
+++ b/drivers/video/bfin-lq035q1-fb.c
@@ -695,7 +695,7 @@ static int __devinit bfin_lq035q1_probe(struct platform_device *pdev)
goto out7;
}
- ret = request_irq(info->irq, bfin_lq035q1_irq_error, IRQF_DISABLED,
+ ret = request_irq(info->irq, bfin_lq035q1_irq_error, 0,
DRIVER_NAME" PPI ERROR", info);
if (ret < 0) {
dev_err(&pdev->dev, "unable to request PPI ERROR IRQ\n");
diff --git a/drivers/video/bfin-t350mcqb-fb.c b/drivers/video/bfin-t350mcqb-fb.c
index d8de29f..d5e1267 100644
--- a/drivers/video/bfin-t350mcqb-fb.c
+++ b/drivers/video/bfin-t350mcqb-fb.c
@@ -529,7 +529,7 @@ static int __devinit bfin_t350mcqb_probe(struct platform_device *pdev)
goto out7;
}
- ret = request_irq(info->irq, bfin_t350mcqb_irq_error, IRQF_DISABLED,
+ ret = request_irq(info->irq, bfin_t350mcqb_irq_error, 0,
"PPI ERROR", info);
if (ret < 0) {
printk(KERN_ERR DRIVER_NAME
diff --git a/drivers/video/bfin_adv7393fb.c b/drivers/video/bfin_adv7393fb.c
index 8486f54..811dd7f 100644
--- a/drivers/video/bfin_adv7393fb.c
+++ b/drivers/video/bfin_adv7393fb.c
@@ -481,7 +481,7 @@ static int __devinit bfin_adv7393_fb_probe(struct i2c_client *client,
goto out_4;
}
- if (request_irq(IRQ_PPI_ERROR, ppi_irq_error, IRQF_DISABLED,
+ if (request_irq(IRQ_PPI_ERROR, ppi_irq_error, 0,
"PPI ERROR", fbdev) < 0) {
dev_err(&client->dev, "unable to request PPI ERROR IRQ\n");
ret = -EFAULT;
diff --git a/drivers/video/mb862xx/mb862xxfbdrv.c b/drivers/video/mb862xx/mb862xxfbdrv.c
index 12a634a..11a7a33 100644
--- a/drivers/video/mb862xx/mb862xxfbdrv.c
+++ b/drivers/video/mb862xx/mb862xxfbdrv.c
@@ -738,7 +738,7 @@ static int __devinit of_platform_mb862xx_probe(struct platform_device *ofdev)
if (mb862xx_gdc_init(par))
goto io_unmap;
- if (request_irq(par->irq, mb862xx_intr, IRQF_DISABLED,
+ if (request_irq(par->irq, mb862xx_intr, 0,
DRV_NAME, (void *)par)) {
dev_err(dev, "Cannot request irq\n");
goto io_unmap;
@@ -1074,7 +1074,7 @@ static int __devinit mb862xx_pci_probe(struct pci_dev *pdev,
if (mb862xx_pci_gdc_init(par))
goto io_unmap;
- if (request_irq(par->irq, mb862xx_intr, IRQF_DISABLED | IRQF_SHARED,
+ if (request_irq(par->irq, mb862xx_intr, IRQF_SHARED,
DRV_NAME, (void *)par)) {
dev_err(dev, "Cannot request irq\n");
goto io_unmap;
diff --git a/drivers/video/msm/mddi.c b/drivers/video/msm/mddi.c
index 178b072..4527cbf 100644
--- a/drivers/video/msm/mddi.c
+++ b/drivers/video/msm/mddi.c
@@ -715,7 +715,7 @@ static int __devinit mddi_probe(struct platform_device *pdev)
mddi->int_enable = 0;
mddi_writel(mddi->int_enable, INTEN);
- ret = request_irq(mddi->irq, mddi_isr, IRQF_DISABLED, "mddi",
+ ret = request_irq(mddi->irq, mddi_isr, 0, "mddi",
&mddi->client_data);
if (ret) {
printk(KERN_ERR "mddi: failed to request enable irq!\n");
diff --git a/drivers/video/msm/mdp.c b/drivers/video/msm/mdp.c
index 2750ed2..cb2ddf1 100644
--- a/drivers/video/msm/mdp.c
+++ b/drivers/video/msm/mdp.c
@@ -426,7 +426,7 @@ int mdp_probe(struct platform_device *pdev)
goto error_get_clk;
}
- ret = request_irq(mdp->irq, mdp_isr, IRQF_DISABLED, "msm_mdp", mdp);
+ ret = request_irq(mdp->irq, mdp_isr, 0, "msm_mdp", mdp);
if (ret)
goto error_request_irq;
disable_irq(mdp->irq);
diff --git a/drivers/video/nuc900fb.c b/drivers/video/nuc900fb.c
index 37dd850..d1fbbd8 100644
--- a/drivers/video/nuc900fb.c
+++ b/drivers/video/nuc900fb.c
@@ -587,7 +587,7 @@ static int __devinit nuc900fb_probe(struct platform_device *pdev)
fbinfo->flags = FBINFO_FLAG_DEFAULT;
fbinfo->pseudo_palette = &fbi->pseudo_pal;
- ret = request_irq(irq, nuc900fb_irqhandler, IRQF_DISABLED,
+ ret = request_irq(irq, nuc900fb_irqhandler, 0,
pdev->name, fbinfo);
if (ret) {
dev_err(&pdev->dev, "cannot register irq handler %d -err %d\n",
diff --git a/drivers/video/omap2/displays/panel-taal.c b/drivers/video/omap2/displays/panel-taal.c
index 7f91002..80c3f6a 100644
--- a/drivers/video/omap2/displays/panel-taal.c
+++ b/drivers/video/omap2/displays/panel-taal.c
@@ -1034,7 +1034,7 @@ static int taal_probe(struct omap_dss_device *dssdev)
gpio_direction_input(gpio);
r = request_irq(gpio_to_irq(gpio), taal_te_isr,
- IRQF_DISABLED | IRQF_TRIGGER_RISING,
+ IRQF_TRIGGER_RISING,
"taal vsync", dssdev);
if (r) {
diff --git a/drivers/video/ps3fb.c b/drivers/video/ps3fb.c
index 65560a1..213fbbc 100644
--- a/drivers/video/ps3fb.c
+++ b/drivers/video/ps3fb.c
@@ -1082,7 +1082,7 @@ static int __devinit ps3fb_probe(struct ps3_system_bus_device *dev)
}
retval = request_irq(ps3fb.irq_no, ps3fb_vsync_interrupt,
- IRQF_DISABLED, DEVICE_NAME, &dev->core);
+ 0, DEVICE_NAME, &dev->core);
if (retval) {
dev_err(&dev->core, "%s: request_irq failed %d\n", __func__,
retval);
diff --git a/drivers/video/pxa3xx-gcu.c b/drivers/video/pxa3xx-gcu.c
index d8de557..1ed8b36 100644
--- a/drivers/video/pxa3xx-gcu.c
+++ b/drivers/video/pxa3xx-gcu.c
@@ -676,7 +676,7 @@ pxa3xx_gcu_probe(struct platform_device *dev)
}
ret = request_irq(irq, pxa3xx_gcu_handle_irq,
- IRQF_DISABLED, DRV_NAME, priv);
+ 0, DRV_NAME, priv);
if (ret) {
dev_err(&dev->dev, "request_irq failed\n");
ret = -EBUSY;
diff --git a/drivers/video/pxafb.c b/drivers/video/pxafb.c
index 0f4e8c9..e89778f 100644
--- a/drivers/video/pxafb.c
+++ b/drivers/video/pxafb.c
@@ -2191,7 +2191,7 @@ static int __devinit pxafb_probe(struct platform_device *dev)
goto failed_free_mem;
}
- ret = request_irq(irq, pxafb_handle_irq, IRQF_DISABLED, "LCD", fbi);
+ ret = request_irq(irq, pxafb_handle_irq, 0, "LCD", fbi);
if (ret) {
dev_err(&dev->dev, "request_irq failed: %d\n", ret);
ret = -EBUSY;
diff --git a/drivers/video/s3c2410fb.c b/drivers/video/s3c2410fb.c
index 798144a..ee4c0df 100644
--- a/drivers/video/s3c2410fb.c
+++ b/drivers/video/s3c2410fb.c
@@ -910,7 +910,7 @@ static int __devinit s3c24xxfb_probe(struct platform_device *pdev,
for (i = 0; i < 256; i++)
info->palette_buffer[i] = PALETTE_BUFF_CLEAR;
- ret = request_irq(irq, s3c2410fb_irq, IRQF_DISABLED, pdev->name, info);
+ ret = request_irq(irq, s3c2410fb_irq, 0, pdev->name, info);
if (ret) {
dev_err(&pdev->dev, "cannot get irq %d - err %d\n", irq, ret);
ret = -EBUSY;
diff --git a/drivers/video/sa1100fb.c b/drivers/video/sa1100fb.c
index e8b76d6..98d55d0 100644
--- a/drivers/video/sa1100fb.c
+++ b/drivers/video/sa1100fb.c
@@ -1457,8 +1457,7 @@ static int __devinit sa1100fb_probe(struct platform_device *pdev)
if (ret)
goto failed;
- ret = request_irq(irq, sa1100fb_handle_irq, IRQF_DISABLED,
- "LCD", fbi);
+ ret = request_irq(irq, sa1100fb_handle_irq, 0, "LCD", fbi);
if (ret) {
printk(KERN_ERR "sa1100fb: request_irq failed: %d\n", ret);
goto failed;
diff --git a/drivers/video/sh_mobile_lcdcfb.c b/drivers/video/sh_mobile_lcdcfb.c
index 4636f9d..facffc2 100644
--- a/drivers/video/sh_mobile_lcdcfb.c
+++ b/drivers/video/sh_mobile_lcdcfb.c
@@ -1577,7 +1577,7 @@ static int __devinit sh_mobile_lcdc_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, priv);
- error = request_irq(i, sh_mobile_lcdc_irq, IRQF_DISABLED,
+ error = request_irq(i, sh_mobile_lcdc_irq, 0,
dev_name(&pdev->dev), priv);
if (error) {
dev_err(&pdev->dev, "unable to request irq\n");
diff --git a/drivers/video/tmiofb.c b/drivers/video/tmiofb.c
index cd1c4dc..8e4a446 100644
--- a/drivers/video/tmiofb.c
+++ b/drivers/video/tmiofb.c
@@ -744,7 +744,7 @@ static int __devinit tmiofb_probe(struct platform_device *dev)
goto err_ioremap_vram;
}
- retval = request_irq(irq, &tmiofb_irq, IRQF_DISABLED,
+ retval = request_irq(irq, &tmiofb_irq, 0,
dev_name(&dev->dev), info);
if (retval)
diff --git a/drivers/video/vt8500lcdfb.c b/drivers/video/vt8500lcdfb.c
index c13c246..777c21d 100644
--- a/drivers/video/vt8500lcdfb.c
+++ b/drivers/video/vt8500lcdfb.c
@@ -355,7 +355,7 @@ static int __devinit vt8500lcd_probe(struct platform_device *pdev)
goto failed_free_palette;
}
- ret = request_irq(irq, vt8500lcd_handle_irq, IRQF_DISABLED, "LCD", fbi);
+ ret = request_irq(irq, vt8500lcd_handle_irq, 0, "LCD", fbi);
if (ret) {
dev_err(&pdev->dev, "request_irq failed: %d\n", ret);
ret = -EBUSY;
--
1.7.4.1
^ permalink raw reply related
* [PATCH 46/55] rtc: irq: Remove IRQF_DISABLED
From: Yong Zhang @ 2011-09-22 8:59 UTC (permalink / raw)
To: linux-arm-kernel
In-Reply-To: <1316681962-8217-1-git-send-email-yong.zhang0@gmail.com>
Since commit [e58aa3d2: genirq: Run irq handlers with interrupts disabled],
We run all interrupt handlers with interrupts disabled
and we even check and yell when an interrupt handler
returns with interrupts enabled (see commit [b738a50a:
genirq: Warn when handler enables interrupts]).
So now this flag is a NOOP and can be removed.
Signed-off-by: Yong Zhang <yong.zhang0@gmail.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Wan ZongShun <mcuos.com@gmail.com>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
---
drivers/rtc/rtc-at91sam9.c | 2 +-
drivers/rtc/rtc-cmos.c | 2 +-
drivers/rtc/rtc-coh901331.c | 2 +-
drivers/rtc/rtc-davinci.c | 2 +-
drivers/rtc/rtc-ds1511.c | 2 +-
drivers/rtc/rtc-ds1553.c | 2 +-
drivers/rtc/rtc-lpc32xx.c | 2 +-
drivers/rtc/rtc-mpc5121.c | 4 ++--
drivers/rtc/rtc-mrst.c | 2 +-
drivers/rtc/rtc-mv.c | 2 +-
drivers/rtc/rtc-nuc900.c | 2 +-
drivers/rtc/rtc-omap.c | 4 ++--
drivers/rtc/rtc-pl030.c | 2 +-
drivers/rtc/rtc-pl031.c | 2 +-
drivers/rtc/rtc-puv3.c | 4 ++--
drivers/rtc/rtc-pxa.c | 4 ++--
drivers/rtc/rtc-s3c.c | 4 ++--
drivers/rtc/rtc-sa1100.c | 4 ++--
drivers/rtc/rtc-sh.c | 8 ++++----
drivers/rtc/rtc-stk17ta8.c | 2 +-
drivers/rtc/rtc-tx4939.c | 2 +-
drivers/rtc/rtc-vr41xx.c | 4 ++--
22 files changed, 32 insertions(+), 32 deletions(-)
diff --git a/drivers/rtc/rtc-at91sam9.c b/drivers/rtc/rtc-at91sam9.c
index a3ad957..0c09e8f 100644
--- a/drivers/rtc/rtc-at91sam9.c
+++ b/drivers/rtc/rtc-at91sam9.c
@@ -331,7 +331,7 @@ static int __init at91_rtc_probe(struct platform_device *pdev)
/* register irq handler after we know what name we'll use */
ret = request_irq(AT91_ID_SYS, at91_rtc_interrupt,
- IRQF_DISABLED | IRQF_SHARED,
+ IRQF_SHARED,
dev_name(&rtc->rtcdev->dev), rtc);
if (ret) {
dev_dbg(&pdev->dev, "can't share IRQ %d?\n", AT91_ID_SYS);
diff --git a/drivers/rtc/rtc-cmos.c b/drivers/rtc/rtc-cmos.c
index 05beb6c..66d3b14 100644
--- a/drivers/rtc/rtc-cmos.c
+++ b/drivers/rtc/rtc-cmos.c
@@ -714,7 +714,7 @@ cmos_do_probe(struct device *dev, struct resource *ports, int rtc_irq)
rtc_cmos_int_handler = cmos_interrupt;
retval = request_irq(rtc_irq, rtc_cmos_int_handler,
- IRQF_DISABLED, dev_name(&cmos_rtc.rtc->dev),
+ 0, dev_name(&cmos_rtc.rtc->dev),
cmos_rtc.rtc);
if (retval < 0) {
dev_dbg(dev, "IRQ %d is already in use\n", rtc_irq);
diff --git a/drivers/rtc/rtc-coh901331.c b/drivers/rtc/rtc-coh901331.c
index 80f9c88..a5b8a0c 100644
--- a/drivers/rtc/rtc-coh901331.c
+++ b/drivers/rtc/rtc-coh901331.c
@@ -199,7 +199,7 @@ static int __init coh901331_probe(struct platform_device *pdev)
}
rtap->irq = platform_get_irq(pdev, 0);
- if (request_irq(rtap->irq, coh901331_interrupt, IRQF_DISABLED,
+ if (request_irq(rtap->irq, coh901331_interrupt, 0,
"RTC COH 901 331 Alarm", rtap)) {
ret = -EIO;
goto out_no_irq;
diff --git a/drivers/rtc/rtc-davinci.c b/drivers/rtc/rtc-davinci.c
index 755e1fe..14c2109 100644
--- a/drivers/rtc/rtc-davinci.c
+++ b/drivers/rtc/rtc-davinci.c
@@ -542,7 +542,7 @@ static int __init davinci_rtc_probe(struct platform_device *pdev)
rtcss_write(davinci_rtc, 0, PRTCSS_RTC_CCTRL);
ret = request_irq(davinci_rtc->irq, davinci_rtc_interrupt,
- IRQF_DISABLED, "davinci_rtc", davinci_rtc);
+ 0, "davinci_rtc", davinci_rtc);
if (ret < 0) {
dev_err(dev, "unable to register davinci RTC interrupt\n");
goto fail4;
diff --git a/drivers/rtc/rtc-ds1511.c b/drivers/rtc/rtc-ds1511.c
index 586c244..bbc7c86 100644
--- a/drivers/rtc/rtc-ds1511.c
+++ b/drivers/rtc/rtc-ds1511.c
@@ -532,7 +532,7 @@ ds1511_rtc_probe(struct platform_device *pdev)
if (pdata->irq > 0) {
rtc_read(RTC_CMD1);
if (devm_request_irq(&pdev->dev, pdata->irq, ds1511_interrupt,
- IRQF_DISABLED | IRQF_SHARED, pdev->name, pdev) < 0) {
+ IRQF_SHARED, pdev->name, pdev) < 0) {
dev_warn(&pdev->dev, "interrupt not available.\n");
pdata->irq = 0;
diff --git a/drivers/rtc/rtc-ds1553.c b/drivers/rtc/rtc-ds1553.c
index 1350029..1ef2718 100644
--- a/drivers/rtc/rtc-ds1553.c
+++ b/drivers/rtc/rtc-ds1553.c
@@ -320,7 +320,7 @@ static int __devinit ds1553_rtc_probe(struct platform_device *pdev)
writeb(0, ioaddr + RTC_INTERRUPTS);
if (devm_request_irq(&pdev->dev, pdata->irq,
ds1553_rtc_interrupt,
- IRQF_DISABLED, pdev->name, pdev) < 0) {
+ 0, pdev->name, pdev) < 0) {
dev_warn(&pdev->dev, "interrupt not available.\n");
pdata->irq = 0;
}
diff --git a/drivers/rtc/rtc-lpc32xx.c b/drivers/rtc/rtc-lpc32xx.c
index ae16250..ba11a19 100644
--- a/drivers/rtc/rtc-lpc32xx.c
+++ b/drivers/rtc/rtc-lpc32xx.c
@@ -287,7 +287,7 @@ static int __devinit lpc32xx_rtc_probe(struct platform_device *pdev)
if (rtc->irq >= 0) {
if (devm_request_irq(&pdev->dev, rtc->irq,
lpc32xx_rtc_alarm_interrupt,
- IRQF_DISABLED, pdev->name, rtc) < 0) {
+ 0, pdev->name, rtc) < 0) {
dev_warn(&pdev->dev, "Can't request interrupt.\n");
rtc->irq = -1;
} else {
diff --git a/drivers/rtc/rtc-mpc5121.c b/drivers/rtc/rtc-mpc5121.c
index da60915..3a683fd 100644
--- a/drivers/rtc/rtc-mpc5121.c
+++ b/drivers/rtc/rtc-mpc5121.c
@@ -327,7 +327,7 @@ static int __devinit mpc5121_rtc_probe(struct platform_device *op)
dev_set_drvdata(&op->dev, rtc);
rtc->irq = irq_of_parse_and_map(op->dev.of_node, 1);
- err = request_irq(rtc->irq, mpc5121_rtc_handler, IRQF_DISABLED,
+ err = request_irq(rtc->irq, mpc5121_rtc_handler, 0,
"mpc5121-rtc", &op->dev);
if (err) {
dev_err(&op->dev, "%s: could not request irq: %i\n",
@@ -337,7 +337,7 @@ static int __devinit mpc5121_rtc_probe(struct platform_device *op)
rtc->irq_periodic = irq_of_parse_and_map(op->dev.of_node, 0);
err = request_irq(rtc->irq_periodic, mpc5121_rtc_handler_upd,
- IRQF_DISABLED, "mpc5121-rtc_upd", &op->dev);
+ 0, "mpc5121-rtc_upd", &op->dev);
if (err) {
dev_err(&op->dev, "%s: could not request irq: %i\n",
__func__, rtc->irq_periodic);
diff --git a/drivers/rtc/rtc-mrst.c b/drivers/rtc/rtc-mrst.c
index d335448..507f00e 100644
--- a/drivers/rtc/rtc-mrst.c
+++ b/drivers/rtc/rtc-mrst.c
@@ -363,7 +363,7 @@ vrtc_mrst_do_probe(struct device *dev, struct resource *iomem, int rtc_irq)
if (rtc_irq) {
retval = request_irq(rtc_irq, mrst_rtc_irq,
- IRQF_DISABLED, dev_name(&mrst_rtc.rtc->dev),
+ 0, dev_name(&mrst_rtc.rtc->dev),
mrst_rtc.rtc);
if (retval < 0) {
dev_dbg(dev, "IRQ %d is already in use, err %d\n",
diff --git a/drivers/rtc/rtc-mv.c b/drivers/rtc/rtc-mv.c
index 768e2ed..1300962 100644
--- a/drivers/rtc/rtc-mv.c
+++ b/drivers/rtc/rtc-mv.c
@@ -273,7 +273,7 @@ static int __devinit mv_rtc_probe(struct platform_device *pdev)
if (pdata->irq >= 0) {
writel(0, pdata->ioaddr + RTC_ALARM_INTERRUPT_MASK_REG_OFFS);
if (devm_request_irq(&pdev->dev, pdata->irq, mv_rtc_interrupt,
- IRQF_DISABLED | IRQF_SHARED,
+ IRQF_SHARED,
pdev->name, pdata) < 0) {
dev_warn(&pdev->dev, "interrupt not available.\n");
pdata->irq = -1;
diff --git a/drivers/rtc/rtc-nuc900.c b/drivers/rtc/rtc-nuc900.c
index 781068d..b790109 100644
--- a/drivers/rtc/rtc-nuc900.c
+++ b/drivers/rtc/rtc-nuc900.c
@@ -269,7 +269,7 @@ static int __devinit nuc900_rtc_probe(struct platform_device *pdev)
nuc900_rtc->irq_num = platform_get_irq(pdev, 0);
if (request_irq(nuc900_rtc->irq_num, nuc900_rtc_interrupt,
- IRQF_DISABLED, "nuc900rtc", nuc900_rtc)) {
+ 0, "nuc900rtc", nuc900_rtc)) {
dev_err(&pdev->dev, "NUC900 RTC request irq failed\n");
err = -EBUSY;
goto fail4;
diff --git a/drivers/rtc/rtc-omap.c b/drivers/rtc/rtc-omap.c
index 7789002..0b614e3 100644
--- a/drivers/rtc/rtc-omap.c
+++ b/drivers/rtc/rtc-omap.c
@@ -348,14 +348,14 @@ static int __init omap_rtc_probe(struct platform_device *pdev)
rtc_write(OMAP_RTC_STATUS_ALARM, OMAP_RTC_STATUS_REG);
/* handle periodic and alarm irqs */
- if (request_irq(omap_rtc_timer, rtc_irq, IRQF_DISABLED,
+ if (request_irq(omap_rtc_timer, rtc_irq, 0,
dev_name(&rtc->dev), rtc)) {
pr_debug("%s: RTC timer interrupt IRQ%d already claimed\n",
pdev->name, omap_rtc_timer);
goto fail1;
}
if ((omap_rtc_timer != omap_rtc_alarm) &&
- (request_irq(omap_rtc_alarm, rtc_irq, IRQF_DISABLED,
+ (request_irq(omap_rtc_alarm, rtc_irq, 0,
dev_name(&rtc->dev), rtc))) {
pr_debug("%s: RTC alarm interrupt IRQ%d already claimed\n",
pdev->name, omap_rtc_alarm);
diff --git a/drivers/rtc/rtc-pl030.c b/drivers/rtc/rtc-pl030.c
index 1d28d44..c5afd6f 100644
--- a/drivers/rtc/rtc-pl030.c
+++ b/drivers/rtc/rtc-pl030.c
@@ -123,7 +123,7 @@ static int pl030_probe(struct amba_device *dev, const struct amba_id *id)
amba_set_drvdata(dev, rtc);
- ret = request_irq(dev->irq[0], pl030_interrupt, IRQF_DISABLED,
+ ret = request_irq(dev->irq[0], pl030_interrupt, 0,
"rtc-pl030", rtc);
if (ret)
goto err_irq;
diff --git a/drivers/rtc/rtc-pl031.c b/drivers/rtc/rtc-pl031.c
index ff1b84b..d2df59d 100644
--- a/drivers/rtc/rtc-pl031.c
+++ b/drivers/rtc/rtc-pl031.c
@@ -352,7 +352,7 @@ static int pl031_probe(struct amba_device *adev, const struct amba_id *id)
}
if (request_irq(adev->irq[0], pl031_interrupt,
- IRQF_DISABLED, "rtc-pl031", ldata)) {
+ 0, "rtc-pl031", ldata)) {
ret = -EIO;
goto out_no_irq;
}
diff --git a/drivers/rtc/rtc-puv3.c b/drivers/rtc/rtc-puv3.c
index b3eba3c..378fe4b 100644
--- a/drivers/rtc/rtc-puv3.c
+++ b/drivers/rtc/rtc-puv3.c
@@ -164,7 +164,7 @@ static int puv3_rtc_open(struct device *dev)
int ret;
ret = request_irq(puv3_rtc_alarmno, puv3_rtc_alarmirq,
- IRQF_DISABLED, "pkunity-rtc alarm", rtc_dev);
+ 0, "pkunity-rtc alarm", rtc_dev);
if (ret) {
dev_err(dev, "IRQ%d error %d\n", puv3_rtc_alarmno, ret);
@@ -172,7 +172,7 @@ static int puv3_rtc_open(struct device *dev)
}
ret = request_irq(puv3_rtc_tickno, puv3_rtc_tickirq,
- IRQF_DISABLED, "pkunity-rtc tick", rtc_dev);
+ 0, "pkunity-rtc tick", rtc_dev);
if (ret) {
dev_err(dev, "IRQ%d error %d\n", puv3_rtc_tickno, ret);
diff --git a/drivers/rtc/rtc-pxa.c b/drivers/rtc/rtc-pxa.c
index fc9f499..0075c8f 100644
--- a/drivers/rtc/rtc-pxa.c
+++ b/drivers/rtc/rtc-pxa.c
@@ -174,14 +174,14 @@ static int pxa_rtc_open(struct device *dev)
struct pxa_rtc *pxa_rtc = dev_get_drvdata(dev);
int ret;
- ret = request_irq(pxa_rtc->irq_1Hz, pxa_rtc_irq, IRQF_DISABLED,
+ ret = request_irq(pxa_rtc->irq_1Hz, pxa_rtc_irq, 0,
"rtc 1Hz", dev);
if (ret < 0) {
dev_err(dev, "can't get irq %i, err %d\n", pxa_rtc->irq_1Hz,
ret);
goto err_irq_1Hz;
}
- ret = request_irq(pxa_rtc->irq_Alrm, pxa_rtc_irq, IRQF_DISABLED,
+ ret = request_irq(pxa_rtc->irq_Alrm, pxa_rtc_irq, 0,
"rtc Alrm", dev);
if (ret < 0) {
dev_err(dev, "can't get irq %i, err %d\n", pxa_rtc->irq_Alrm,
diff --git a/drivers/rtc/rtc-s3c.c b/drivers/rtc/rtc-s3c.c
index 7639ab9..9a073aa 100644
--- a/drivers/rtc/rtc-s3c.c
+++ b/drivers/rtc/rtc-s3c.c
@@ -536,14 +536,14 @@ static int __devinit s3c_rtc_probe(struct platform_device *pdev)
s3c_rtc_setfreq(&pdev->dev, 1);
ret = request_irq(s3c_rtc_alarmno, s3c_rtc_alarmirq,
- IRQF_DISABLED, "s3c2410-rtc alarm", rtc);
+ 0, "s3c2410-rtc alarm", rtc);
if (ret) {
dev_err(&pdev->dev, "IRQ%d error %d\n", s3c_rtc_alarmno, ret);
goto err_alarm_irq;
}
ret = request_irq(s3c_rtc_tickno, s3c_rtc_tickirq,
- IRQF_DISABLED, "s3c2410-rtc tick", rtc);
+ 0, "s3c2410-rtc tick", rtc);
if (ret) {
dev_err(&pdev->dev, "IRQ%d error %d\n", s3c_rtc_tickno, ret);
free_irq(s3c_rtc_alarmno, rtc);
diff --git a/drivers/rtc/rtc-sa1100.c b/drivers/rtc/rtc-sa1100.c
index 0b40bb8..7ca247e 100644
--- a/drivers/rtc/rtc-sa1100.c
+++ b/drivers/rtc/rtc-sa1100.c
@@ -161,13 +161,13 @@ static int sa1100_rtc_open(struct device *dev)
struct platform_device *plat_dev = to_platform_device(dev);
struct rtc_device *rtc = platform_get_drvdata(plat_dev);
- ret = request_irq(IRQ_RTC1Hz, sa1100_rtc_interrupt, IRQF_DISABLED,
+ ret = request_irq(IRQ_RTC1Hz, sa1100_rtc_interrupt, 0,
"rtc 1Hz", dev);
if (ret) {
dev_err(dev, "IRQ %d already in use.\n", IRQ_RTC1Hz);
goto fail_ui;
}
- ret = request_irq(IRQ_RTCAlrm, sa1100_rtc_interrupt, IRQF_DISABLED,
+ ret = request_irq(IRQ_RTCAlrm, sa1100_rtc_interrupt, 0,
"rtc Alrm", dev);
if (ret) {
dev_err(dev, "IRQ %d already in use.\n", IRQ_RTCAlrm);
diff --git a/drivers/rtc/rtc-sh.c b/drivers/rtc/rtc-sh.c
index 6ac55fd..e55a763 100644
--- a/drivers/rtc/rtc-sh.c
+++ b/drivers/rtc/rtc-sh.c
@@ -666,7 +666,7 @@ static int __init sh_rtc_probe(struct platform_device *pdev)
if (rtc->carry_irq <= 0) {
/* register shared periodic/carry/alarm irq */
ret = request_irq(rtc->periodic_irq, sh_rtc_shared,
- IRQF_DISABLED, "sh-rtc", rtc);
+ 0, "sh-rtc", rtc);
if (unlikely(ret)) {
dev_err(&pdev->dev,
"request IRQ failed with %d, IRQ %d\n", ret,
@@ -676,7 +676,7 @@ static int __init sh_rtc_probe(struct platform_device *pdev)
} else {
/* register periodic/carry/alarm irqs */
ret = request_irq(rtc->periodic_irq, sh_rtc_periodic,
- IRQF_DISABLED, "sh-rtc period", rtc);
+ 0, "sh-rtc period", rtc);
if (unlikely(ret)) {
dev_err(&pdev->dev,
"request period IRQ failed with %d, IRQ %d\n",
@@ -685,7 +685,7 @@ static int __init sh_rtc_probe(struct platform_device *pdev)
}
ret = request_irq(rtc->carry_irq, sh_rtc_interrupt,
- IRQF_DISABLED, "sh-rtc carry", rtc);
+ 0, "sh-rtc carry", rtc);
if (unlikely(ret)) {
dev_err(&pdev->dev,
"request carry IRQ failed with %d, IRQ %d\n",
@@ -695,7 +695,7 @@ static int __init sh_rtc_probe(struct platform_device *pdev)
}
ret = request_irq(rtc->alarm_irq, sh_rtc_alarm,
- IRQF_DISABLED, "sh-rtc alarm", rtc);
+ 0, "sh-rtc alarm", rtc);
if (unlikely(ret)) {
dev_err(&pdev->dev,
"request alarm IRQ failed with %d, IRQ %d\n",
diff --git a/drivers/rtc/rtc-stk17ta8.c b/drivers/rtc/rtc-stk17ta8.c
index ed3e9b5..5e9adec 100644
--- a/drivers/rtc/rtc-stk17ta8.c
+++ b/drivers/rtc/rtc-stk17ta8.c
@@ -329,7 +329,7 @@ static int __devinit stk17ta8_rtc_probe(struct platform_device *pdev)
writeb(0, ioaddr + RTC_INTERRUPTS);
if (devm_request_irq(&pdev->dev, pdata->irq,
stk17ta8_rtc_interrupt,
- IRQF_DISABLED | IRQF_SHARED,
+ IRQF_SHARED,
pdev->name, pdev) < 0) {
dev_warn(&pdev->dev, "interrupt not available.\n");
pdata->irq = 0;
diff --git a/drivers/rtc/rtc-tx4939.c b/drivers/rtc/rtc-tx4939.c
index aac0ffe..a12bfac 100644
--- a/drivers/rtc/rtc-tx4939.c
+++ b/drivers/rtc/rtc-tx4939.c
@@ -266,7 +266,7 @@ static int __init tx4939_rtc_probe(struct platform_device *pdev)
spin_lock_init(&pdata->lock);
tx4939_rtc_cmd(pdata->rtcreg, TX4939_RTCCTL_COMMAND_NOP);
if (devm_request_irq(&pdev->dev, irq, tx4939_rtc_interrupt,
- IRQF_DISABLED, pdev->name, &pdev->dev) < 0)
+ 0, pdev->name, &pdev->dev) < 0)
return -EBUSY;
rtc = rtc_device_register(pdev->name, &pdev->dev,
&tx4939_rtc_ops, THIS_MODULE);
diff --git a/drivers/rtc/rtc-vr41xx.c b/drivers/rtc/rtc-vr41xx.c
index c5698cd..6aef17d 100644
--- a/drivers/rtc/rtc-vr41xx.c
+++ b/drivers/rtc/rtc-vr41xx.c
@@ -333,7 +333,7 @@ static int __devinit rtc_probe(struct platform_device *pdev)
goto err_device_unregister;
}
- retval = request_irq(aie_irq, elapsedtime_interrupt, IRQF_DISABLED,
+ retval = request_irq(aie_irq, elapsedtime_interrupt, 0,
"elapsed_time", pdev);
if (retval < 0)
goto err_device_unregister;
@@ -342,7 +342,7 @@ static int __devinit rtc_probe(struct platform_device *pdev)
if (pie_irq <= 0)
goto err_free_irq;
- retval = request_irq(pie_irq, rtclong1_interrupt, IRQF_DISABLED,
+ retval = request_irq(pie_irq, rtclong1_interrupt, 0,
"rtclong1", pdev);
if (retval < 0)
goto err_free_irq;
--
1.7.4.1
^ permalink raw reply related
* [PATCH 32/55] i2c: irq: Remove IRQF_DISABLED
From: Yong Zhang @ 2011-09-22 8:58 UTC (permalink / raw)
To: linux-arm-kernel
In-Reply-To: <1316681962-8217-1-git-send-email-yong.zhang0@gmail.com>
Since commit [e58aa3d2: genirq: Run irq handlers with interrupts disabled],
We run all interrupt handlers with interrupts disabled
and we even check and yell when an interrupt handler
returns with interrupts enabled (see commit [b738a50a:
genirq: Warn when handler enables interrupts]).
So now this flag is a NOOP and can be removed.
Signed-off-by: Yong Zhang <yong.zhang0@gmail.com>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Barry Song <21cnbao@gmail.com>
---
drivers/i2c/busses/i2c-bfin-twi.c | 4 ++--
drivers/i2c/busses/i2c-designware.c | 2 +-
drivers/i2c/busses/i2c-highlander.c | 2 +-
drivers/i2c/busses/i2c-nomadik.c | 2 +-
drivers/i2c/busses/i2c-nuc900.c | 2 +-
drivers/i2c/busses/i2c-pmcmsp.c | 2 +-
drivers/i2c/busses/i2c-s3c2410.c | 2 +-
drivers/i2c/busses/i2c-sh7760.c | 2 +-
drivers/i2c/busses/i2c-sh_mobile.c | 2 +-
drivers/i2c/busses/i2c-stu300.c | 2 +-
10 files changed, 11 insertions(+), 11 deletions(-)
diff --git a/drivers/i2c/busses/i2c-bfin-twi.c b/drivers/i2c/busses/i2c-bfin-twi.c
index cbc98ae..cdb59e5 100644
--- a/drivers/i2c/busses/i2c-bfin-twi.c
+++ b/drivers/i2c/busses/i2c-bfin-twi.c
@@ -631,7 +631,7 @@ static int i2c_bfin_twi_resume(struct platform_device *pdev)
struct bfin_twi_iface *iface = platform_get_drvdata(pdev);
int rc = request_irq(iface->irq, bfin_twi_interrupt_entry,
- IRQF_DISABLED, pdev->name, iface);
+ 0, pdev->name, iface);
if (rc) {
dev_err(&pdev->dev, "Can't get IRQ %d !\n", iface->irq);
return -ENODEV;
@@ -702,7 +702,7 @@ static int i2c_bfin_twi_probe(struct platform_device *pdev)
}
rc = request_irq(iface->irq, bfin_twi_interrupt_entry,
- IRQF_DISABLED, pdev->name, iface);
+ 0, pdev->name, iface);
if (rc) {
dev_err(&pdev->dev, "Can't get IRQ %d !\n", iface->irq);
rc = -ENODEV;
diff --git a/drivers/i2c/busses/i2c-designware.c b/drivers/i2c/busses/i2c-designware.c
index 1b42b50..2ac1903 100644
--- a/drivers/i2c/busses/i2c-designware.c
+++ b/drivers/i2c/busses/i2c-designware.c
@@ -755,7 +755,7 @@ static int __devinit dw_i2c_probe(struct platform_device *pdev)
i2c_dw_init(dev);
writel(0, dev->base + DW_IC_INTR_MASK); /* disable IRQ */
- r = request_irq(dev->irq, i2c_dw_isr, IRQF_DISABLED, pdev->name, dev);
+ r = request_irq(dev->irq, i2c_dw_isr, 0, pdev->name, dev);
if (r) {
dev_err(&pdev->dev, "failure requesting irq %i\n", dev->irq);
goto err_iounmap;
diff --git a/drivers/i2c/busses/i2c-highlander.c b/drivers/i2c/busses/i2c-highlander.c
index 3876a24..63bb1cc 100644
--- a/drivers/i2c/busses/i2c-highlander.c
+++ b/drivers/i2c/busses/i2c-highlander.c
@@ -387,7 +387,7 @@ static int __devinit highlander_i2c_probe(struct platform_device *pdev)
dev->irq = 0;
if (dev->irq) {
- ret = request_irq(dev->irq, highlander_i2c_irq, IRQF_DISABLED,
+ ret = request_irq(dev->irq, highlander_i2c_irq, 0,
pdev->name, dev);
if (unlikely(ret))
goto err_unmap;
diff --git a/drivers/i2c/busses/i2c-nomadik.c b/drivers/i2c/busses/i2c-nomadik.c
index b228e09..40702e8 100644
--- a/drivers/i2c/busses/i2c-nomadik.c
+++ b/drivers/i2c/busses/i2c-nomadik.c
@@ -935,7 +935,7 @@ static int __devinit nmk_i2c_probe(struct platform_device *pdev)
}
dev->irq = platform_get_irq(pdev, 0);
- ret = request_irq(dev->irq, i2c_irq_handler, IRQF_DISABLED,
+ ret = request_irq(dev->irq, i2c_irq_handler, 0,
DRIVER_NAME, dev);
if (ret) {
dev_err(&pdev->dev, "cannot claim the irq %d\n", dev->irq);
diff --git a/drivers/i2c/busses/i2c-nuc900.c b/drivers/i2c/busses/i2c-nuc900.c
index 7243426..835e47b 100644
--- a/drivers/i2c/busses/i2c-nuc900.c
+++ b/drivers/i2c/busses/i2c-nuc900.c
@@ -610,7 +610,7 @@ static int __devinit nuc900_i2c_probe(struct platform_device *pdev)
goto err_iomap;
}
- ret = request_irq(i2c->irq, nuc900_i2c_irq, IRQF_DISABLED | IRQF_SHARED,
+ ret = request_irq(i2c->irq, nuc900_i2c_irq, IRQF_SHARED,
dev_name(&pdev->dev), i2c);
if (ret != 0) {
diff --git a/drivers/i2c/busses/i2c-pmcmsp.c b/drivers/i2c/busses/i2c-pmcmsp.c
index dfa7ae9..127051b 100644
--- a/drivers/i2c/busses/i2c-pmcmsp.c
+++ b/drivers/i2c/busses/i2c-pmcmsp.c
@@ -306,7 +306,7 @@ static int __devinit pmcmsptwi_probe(struct platform_device *pldev)
pmcmsptwi_data.irq = platform_get_irq(pldev, 0);
if (pmcmsptwi_data.irq) {
rc = request_irq(pmcmsptwi_data.irq, &pmcmsptwi_interrupt,
- IRQF_SHARED | IRQF_DISABLED | IRQF_SAMPLE_RANDOM,
+ IRQF_SHARED | IRQF_SAMPLE_RANDOM,
pldev->name, &pmcmsptwi_data);
if (rc == 0) {
/*
diff --git a/drivers/i2c/busses/i2c-s3c2410.c b/drivers/i2c/busses/i2c-s3c2410.c
index 9c00ad1..2754cef 100644
--- a/drivers/i2c/busses/i2c-s3c2410.c
+++ b/drivers/i2c/busses/i2c-s3c2410.c
@@ -980,7 +980,7 @@ static int s3c24xx_i2c_probe(struct platform_device *pdev)
goto err_iomap;
}
- ret = request_irq(i2c->irq, s3c24xx_i2c_irq, IRQF_DISABLED,
+ ret = request_irq(i2c->irq, s3c24xx_i2c_irq, 0,
dev_name(&pdev->dev), i2c);
if (ret != 0) {
diff --git a/drivers/i2c/busses/i2c-sh7760.c b/drivers/i2c/busses/i2c-sh7760.c
index 4cd0a1d..a67132b 100644
--- a/drivers/i2c/busses/i2c-sh7760.c
+++ b/drivers/i2c/busses/i2c-sh7760.c
@@ -503,7 +503,7 @@ static int __devinit sh7760_i2c_probe(struct platform_device *pdev)
}
OUT32(id, I2CCCR, ret);
- if (request_irq(id->irq, sh7760_i2c_irq, IRQF_DISABLED,
+ if (request_irq(id->irq, sh7760_i2c_irq, 0,
SH7760_I2C_DEVNAME, id)) {
dev_err(&pdev->dev, "cannot get irq %d\n", id->irq);
ret = -EBUSY;
diff --git a/drivers/i2c/busses/i2c-sh_mobile.c b/drivers/i2c/busses/i2c-sh_mobile.c
index f633a53..675c969 100644
--- a/drivers/i2c/busses/i2c-sh_mobile.c
+++ b/drivers/i2c/busses/i2c-sh_mobile.c
@@ -543,7 +543,7 @@ static int sh_mobile_i2c_hook_irqs(struct platform_device *dev, int hook)
while ((res = platform_get_resource(dev, IORESOURCE_IRQ, k))) {
for (n = res->start; hook && n <= res->end; n++) {
- if (request_irq(n, sh_mobile_i2c_isr, IRQF_DISABLED,
+ if (request_irq(n, sh_mobile_i2c_isr, 0,
dev_name(&dev->dev), dev)) {
for (n--; n >= res->start; n--)
free_irq(n, dev);
diff --git a/drivers/i2c/busses/i2c-stu300.c b/drivers/i2c/busses/i2c-stu300.c
index 9987961..4d44af1 100644
--- a/drivers/i2c/busses/i2c-stu300.c
+++ b/drivers/i2c/busses/i2c-stu300.c
@@ -916,7 +916,7 @@ stu300_probe(struct platform_device *pdev)
}
dev->irq = platform_get_irq(pdev, 0);
- if (request_irq(dev->irq, stu300_irh, IRQF_DISABLED,
+ if (request_irq(dev->irq, stu300_irh, 0,
NAME, dev)) {
ret = -EIO;
goto err_no_irq;
--
1.7.4.1
^ permalink raw reply related
* [PATCH 30/55] dmaengine: irq: Remove IRQF_DISABLED
From: Yong Zhang @ 2011-09-22 8:58 UTC (permalink / raw)
To: linux-arm-kernel
In-Reply-To: <1316681962-8217-1-git-send-email-yong.zhang0@gmail.com>
Since commit [e58aa3d2: genirq: Run irq handlers with interrupts disabled],
We run all interrupt handlers with interrupts disabled
and we even check and yell when an interrupt handler
returns with interrupts enabled (see commit [b738a50a:
genirq: Warn when handler enables interrupts]).
So now this flag is a NOOP and can be removed.
Signed-off-by: Yong Zhang <yong.zhang0@gmail.com>
Acked-by: Vinod Koul <vinod.koul@linux.intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
---
drivers/dma/amba-pl08x.c | 2 +-
drivers/dma/coh901318.c | 2 +-
drivers/dma/shdma.c | 4 ++--
3 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/dma/amba-pl08x.c b/drivers/dma/amba-pl08x.c
index b7cbd1a..896a119 100644
--- a/drivers/dma/amba-pl08x.c
+++ b/drivers/dma/amba-pl08x.c
@@ -1919,7 +1919,7 @@ static int pl08x_probe(struct amba_device *adev, const struct amba_id *id)
writel(0x000000FF, pl08x->base + PL080_ERR_CLEAR);
writel(0x000000FF, pl08x->base + PL080_TC_CLEAR);
- ret = request_irq(adev->irq[0], pl08x_irq, IRQF_DISABLED,
+ ret = request_irq(adev->irq[0], pl08x_irq, 0,
DRIVER_NAME, pl08x);
if (ret) {
dev_err(&adev->dev, "%s failed to request interrupt %d\n",
diff --git a/drivers/dma/coh901318.c b/drivers/dma/coh901318.c
index 4234f41..1dd9455 100644
--- a/drivers/dma/coh901318.c
+++ b/drivers/dma/coh901318.c
@@ -1506,7 +1506,7 @@ static int __init coh901318_probe(struct platform_device *pdev)
if (irq < 0)
goto err_no_irq;
- err = request_irq(irq, dma_irq_handler, IRQF_DISABLED,
+ err = request_irq(irq, dma_irq_handler, 0,
"coh901318", base);
if (err) {
dev_crit(&pdev->dev,
diff --git a/drivers/dma/shdma.c b/drivers/dma/shdma.c
index 7f49235..8c137d2 100644
--- a/drivers/dma/shdma.c
+++ b/drivers/dma/shdma.c
@@ -1106,7 +1106,7 @@ static void sh_dmae_chan_remove(struct sh_dmae_device *shdev)
static int __init sh_dmae_probe(struct platform_device *pdev)
{
struct sh_dmae_pdata *pdata = pdev->dev.platform_data;
- unsigned long irqflags = IRQF_DISABLED,
+ unsigned long irqflags = 0,
chan_flag[SH_DMAC_MAX_CHANNELS] = {};
int errirq, chan_irq[SH_DMAC_MAX_CHANNELS];
int err, i, irq_cnt = 0, irqres = 0, irq_cap = 0;
@@ -1266,7 +1266,7 @@ static int __init sh_dmae_probe(struct platform_device *pdev)
IORESOURCE_IRQ_SHAREABLE)
chan_flag[irq_cnt] = IRQF_SHARED;
else
- chan_flag[irq_cnt] = IRQF_DISABLED;
+ chan_flag[irq_cnt] = 0;
dev_dbg(&pdev->dev,
"Found IRQ %d for channel %d\n",
i, irq_cnt);
--
1.7.4.1
^ permalink raw reply related
* [PATCH 24/55] SCSI: irq: Remove IRQF_DISABLED
From: Yong Zhang @ 2011-09-22 8:58 UTC (permalink / raw)
To: linux-arm-kernel
In-Reply-To: <1316681962-8217-1-git-send-email-yong.zhang0@gmail.com>
Since commit [e58aa3d2: genirq: Run irq handlers with interrupts disabled],
We run all interrupt handlers with interrupts disabled
and we even check and yell when an interrupt handler
returns with interrupts enabled (see commit [b738a50a:
genirq: Warn when handler enables interrupts]).
So now this flag is a NOOP and can be removed.
Signed-off-by: Yong Zhang <yong.zhang0@gmail.com>
---
drivers/scsi/NCR5380.c | 2 +-
drivers/scsi/aacraid/rx.c | 2 +-
drivers/scsi/aacraid/sa.c | 2 +-
drivers/scsi/aacraid/src.c | 2 +-
drivers/scsi/aha152x.c | 4 ++--
drivers/scsi/aic7xxx_old.c | 2 +-
drivers/scsi/arm/acornscsi.c | 2 +-
drivers/scsi/arm/cumana_1.c | 2 +-
drivers/scsi/arm/cumana_2.c | 2 +-
drivers/scsi/arm/powertec.c | 2 +-
drivers/scsi/dtc.c | 2 +-
drivers/scsi/eata.c | 2 +-
drivers/scsi/eata_pio.c | 4 ++--
drivers/scsi/g_NCR5380.c | 2 +-
drivers/scsi/gdth.c | 6 +++---
drivers/scsi/hpsa.c | 4 ++--
drivers/scsi/ibmvscsi/ibmvstgt.c | 2 +-
drivers/scsi/in2000.c | 2 +-
drivers/scsi/initio.c | 2 +-
drivers/scsi/pas16.c | 2 +-
drivers/scsi/pm8001/pm8001_init.c | 4 +---
drivers/scsi/t128.c | 2 +-
drivers/scsi/u14-34f.c | 2 +-
drivers/scsi/wd7000.c | 2 +-
24 files changed, 29 insertions(+), 31 deletions(-)
diff --git a/drivers/scsi/NCR5380.c b/drivers/scsi/NCR5380.c
index 165e4dd86..9f6de17 100644
--- a/drivers/scsi/NCR5380.c
+++ b/drivers/scsi/NCR5380.c
@@ -584,7 +584,7 @@ static int __init __maybe_unused NCR5380_probe_irq(struct Scsi_Host *instance,
NCR5380_setup(instance);
for (trying_irqs = i = 0, mask = 1; i < 16; ++i, mask <<= 1)
- if ((mask & possible) && (request_irq(i, &probe_intr, IRQF_DISABLED, "NCR-probe", NULL) == 0))
+ if ((mask & possible) && (request_irq(i, &probe_intr, 0, "NCR-probe", NULL) == 0))
trying_irqs |= mask;
timeout = jiffies + (250 * HZ / 1000);
diff --git a/drivers/scsi/aacraid/rx.c b/drivers/scsi/aacraid/rx.c
index ce530f1..d1e2a2a 100644
--- a/drivers/scsi/aacraid/rx.c
+++ b/drivers/scsi/aacraid/rx.c
@@ -645,7 +645,7 @@ int _aac_rx_init(struct aac_dev *dev)
aac_adapter_comm(dev, dev->comm_interface);
dev->msi = aac_msi && !pci_enable_msi(dev->pdev);
if (request_irq(dev->pdev->irq, dev->a_ops.adapter_intr,
- IRQF_SHARED|IRQF_DISABLED, "aacraid", dev) < 0) {
+ IRQF_SHARED, "aacraid", dev) < 0) {
if (dev->msi)
pci_disable_msi(dev->pdev);
printk(KERN_ERR "%s%d: Interrupt unavailable.\n",
diff --git a/drivers/scsi/aacraid/sa.c b/drivers/scsi/aacraid/sa.c
index e5d4457..c3e1f6b 100644
--- a/drivers/scsi/aacraid/sa.c
+++ b/drivers/scsi/aacraid/sa.c
@@ -386,7 +386,7 @@ int aac_sa_init(struct aac_dev *dev)
if(aac_init_adapter(dev) == NULL)
goto error_irq;
if (request_irq(dev->pdev->irq, dev->a_ops.adapter_intr,
- IRQF_SHARED|IRQF_DISABLED,
+ IRQF_SHARED,
"aacraid", (void *)dev ) < 0) {
printk(KERN_WARNING "%s%d: Interrupt unavailable.\n",
name, instance);
diff --git a/drivers/scsi/aacraid/src.c b/drivers/scsi/aacraid/src.c
index 957595a..68374e4 100644
--- a/drivers/scsi/aacraid/src.c
+++ b/drivers/scsi/aacraid/src.c
@@ -565,7 +565,7 @@ int aac_src_init(struct aac_dev *dev)
dev->msi = aac_msi && !pci_enable_msi(dev->pdev);
if (request_irq(dev->pdev->irq, dev->a_ops.adapter_intr,
- IRQF_SHARED|IRQF_DISABLED, "aacraid", dev) < 0) {
+ IRQF_SHARED, "aacraid", dev) < 0) {
if (dev->msi)
pci_disable_msi(dev->pdev);
diff --git a/drivers/scsi/aha152x.c b/drivers/scsi/aha152x.c
index f17c92c..46e7a53 100644
--- a/drivers/scsi/aha152x.c
+++ b/drivers/scsi/aha152x.c
@@ -858,7 +858,7 @@ struct Scsi_Host *aha152x_probe_one(struct aha152x_setup *setup)
SETPORT(SIMODE0, 0);
SETPORT(SIMODE1, 0);
- if( request_irq(shpnt->irq, swintr, IRQF_DISABLED|IRQF_SHARED, "aha152x", shpnt) ) {
+ if( request_irq(shpnt->irq, swintr, IRQF_SHARED, "aha152x", shpnt) ) {
printk(KERN_ERR "aha152x%d: irq %d busy.\n", shpnt->host_no, shpnt->irq);
goto out_host_put;
}
@@ -892,7 +892,7 @@ struct Scsi_Host *aha152x_probe_one(struct aha152x_setup *setup)
SETPORT(SSTAT0, 0x7f);
SETPORT(SSTAT1, 0xef);
- if ( request_irq(shpnt->irq, intr, IRQF_DISABLED|IRQF_SHARED, "aha152x", shpnt) ) {
+ if ( request_irq(shpnt->irq, intr, IRQF_SHARED, "aha152x", shpnt) ) {
printk(KERN_ERR "aha152x%d: failed to reassign irq %d.\n", shpnt->host_no, shpnt->irq);
goto out_host_put;
}
diff --git a/drivers/scsi/aic7xxx_old.c b/drivers/scsi/aic7xxx_old.c
index 5b212f0..c3499dd 100644
--- a/drivers/scsi/aic7xxx_old.c
+++ b/drivers/scsi/aic7xxx_old.c
@@ -8306,7 +8306,7 @@ aic7xxx_register(struct scsi_host_template *template, struct aic7xxx_host *p,
"aic7xxx", p));
if (result < 0)
{
- result = (request_irq(p->irq, do_aic7xxx_isr, IRQF_DISABLED | IRQF_SHARED,
+ result = (request_irq(p->irq, do_aic7xxx_isr, IRQF_SHARED,
"aic7xxx", p));
}
}
diff --git a/drivers/scsi/arm/acornscsi.c b/drivers/scsi/arm/acornscsi.c
index c454e44..d58ea8e 100644
--- a/drivers/scsi/arm/acornscsi.c
+++ b/drivers/scsi/arm/acornscsi.c
@@ -2997,7 +2997,7 @@ acornscsi_probe(struct expansion_card *ec, const struct ecard_id *id)
ec->irqaddr = ashost->fast + INT_REG;
ec->irqmask = 0x0a;
- ret = request_irq(host->irq, acornscsi_intr, IRQF_DISABLED, "acornscsi", ashost);
+ ret = request_irq(host->irq, acornscsi_intr, 0, "acornscsi", ashost);
if (ret) {
printk(KERN_CRIT "scsi%d: IRQ%d not free: %d\n",
host->host_no, ashost->scsi.irq, ret);
diff --git a/drivers/scsi/arm/cumana_1.c b/drivers/scsi/arm/cumana_1.c
index a3398fe..c5f46ba 100644
--- a/drivers/scsi/arm/cumana_1.c
+++ b/drivers/scsi/arm/cumana_1.c
@@ -264,7 +264,7 @@ cumanascsi1_probe(struct expansion_card *ec, const struct ecard_id *id)
goto out_unmap;
}
- ret = request_irq(host->irq, cumanascsi_intr, IRQF_DISABLED,
+ ret = request_irq(host->irq, cumanascsi_intr, 0,
"CumanaSCSI-1", host);
if (ret) {
printk("scsi%d: IRQ%d not free: %d\n",
diff --git a/drivers/scsi/arm/cumana_2.c b/drivers/scsi/arm/cumana_2.c
index 547987b..084ed7b 100644
--- a/drivers/scsi/arm/cumana_2.c
+++ b/drivers/scsi/arm/cumana_2.c
@@ -456,7 +456,7 @@ cumanascsi2_probe(struct expansion_card *ec, const struct ecard_id *id)
goto out_free;
ret = request_irq(ec->irq, cumanascsi_2_intr,
- IRQF_DISABLED, "cumanascsi2", info);
+ 0, "cumanascsi2", info);
if (ret) {
printk("scsi%d: IRQ%d not free: %d\n",
host->host_no, ec->irq, ret);
diff --git a/drivers/scsi/arm/powertec.c b/drivers/scsi/arm/powertec.c
index 9274c06..49ac0c2 100644
--- a/drivers/scsi/arm/powertec.c
+++ b/drivers/scsi/arm/powertec.c
@@ -369,7 +369,7 @@ powertecscsi_probe(struct expansion_card *ec, const struct ecard_id *id)
goto out_free;
ret = request_irq(ec->irq, powertecscsi_intr,
- IRQF_DISABLED, "powertec", info);
+ 0, "powertec", info);
if (ret) {
printk("scsi%d: IRQ%d not free: %d\n",
host->host_no, ec->irq, ret);
diff --git a/drivers/scsi/dtc.c b/drivers/scsi/dtc.c
index c2677ba..c77c820 100644
--- a/drivers/scsi/dtc.c
+++ b/drivers/scsi/dtc.c
@@ -277,7 +277,7 @@ found:
/* With interrupts enabled, it will sometimes hang when doing heavy
* reads. So better not enable them until I finger it out. */
if (instance->irq != SCSI_IRQ_NONE)
- if (request_irq(instance->irq, dtc_intr, IRQF_DISABLED,
+ if (request_irq(instance->irq, dtc_intr, 0,
"dtc", instance)) {
printk(KERN_ERR "scsi%d : IRQ%d not free, interrupts disabled\n", instance->host_no, instance->irq);
instance->irq = SCSI_IRQ_NONE;
diff --git a/drivers/scsi/eata.c b/drivers/scsi/eata.c
index 94de889..bc2e02e 100644
--- a/drivers/scsi/eata.c
+++ b/drivers/scsi/eata.c
@@ -1221,7 +1221,7 @@ static int port_detect(unsigned long port_base, unsigned int j,
/* Board detected, allocate its IRQ */
if (request_irq(irq, do_interrupt_handler,
- IRQF_DISABLED | ((subversion == ESA) ? IRQF_SHARED : 0),
+ ((subversion == ESA) ? IRQF_SHARED : 0),
driver_name, (void *)&sha[j])) {
printk("%s: unable to allocate IRQ %u, detaching.\n", name,
irq);
diff --git a/drivers/scsi/eata_pio.c b/drivers/scsi/eata_pio.c
index d5f8362..dcc9820 100644
--- a/drivers/scsi/eata_pio.c
+++ b/drivers/scsi/eata_pio.c
@@ -723,7 +723,7 @@ static int register_pio_HBA(long base, struct get_conf *gc, struct pci_dev *pdev
return 0;
if (!reg_IRQ[gc->IRQ]) { /* Interrupt already registered ? */
- if (!request_irq(gc->IRQ, do_eata_pio_int_handler, IRQF_DISABLED, "EATA-PIO", sh)) {
+ if (!request_irq(gc->IRQ, do_eata_pio_int_handler, 0, "EATA-PIO", sh)) {
reg_IRQ[gc->IRQ]++;
if (!gc->IRQ_TR)
reg_IRQL[gc->IRQ] = 1; /* IRQ is edge triggered */
@@ -957,7 +957,7 @@ static int eata_pio_detect(struct scsi_host_template *tpnt)
for (i = 0; i <= MAXIRQ; i++)
if (reg_IRQ[i])
- request_irq(i, do_eata_pio_int_handler, IRQF_DISABLED, "EATA-PIO", NULL);
+ request_irq(i, do_eata_pio_int_handler, 0, "EATA-PIO", NULL);
HBA_ptr = first_HBA;
diff --git a/drivers/scsi/g_NCR5380.c b/drivers/scsi/g_NCR5380.c
index 81182ba..72cf40f 100644
--- a/drivers/scsi/g_NCR5380.c
+++ b/drivers/scsi/g_NCR5380.c
@@ -462,7 +462,7 @@ int __init generic_NCR5380_detect(struct scsi_host_template * tpnt)
if (instance->irq != SCSI_IRQ_NONE)
if (request_irq(instance->irq, generic_NCR5380_intr,
- IRQF_DISABLED, "NCR5380", instance)) {
+ 0, "NCR5380", instance)) {
printk(KERN_WARNING "scsi%d : IRQ%d not free, interrupts disabled\n", instance->host_no, instance->irq);
instance->irq = SCSI_IRQ_NONE;
}
diff --git a/drivers/scsi/gdth.c b/drivers/scsi/gdth.c
index 3242bca..045cc61 100644
--- a/drivers/scsi/gdth.c
+++ b/drivers/scsi/gdth.c
@@ -4718,7 +4718,7 @@ static int __init gdth_isa_probe_one(u32 isa_bios)
printk("Configuring GDT-ISA HA at BIOS 0x%05X IRQ %u DRQ %u\n",
isa_bios, ha->irq, ha->drq);
- error = request_irq(ha->irq, gdth_interrupt, IRQF_DISABLED, "gdth", ha);
+ error = request_irq(ha->irq, gdth_interrupt, 0, "gdth", ha);
if (error) {
printk("GDT-ISA: Unable to allocate IRQ\n");
goto out_host_put;
@@ -4850,7 +4850,7 @@ static int __init gdth_eisa_probe_one(u16 eisa_slot)
printk("Configuring GDT-EISA HA at Slot %d IRQ %u\n",
eisa_slot >> 12, ha->irq);
- error = request_irq(ha->irq, gdth_interrupt, IRQF_DISABLED, "gdth", ha);
+ error = request_irq(ha->irq, gdth_interrupt, 0, "gdth", ha);
if (error) {
printk("GDT-EISA: Unable to allocate IRQ\n");
goto out_host_put;
@@ -4987,7 +4987,7 @@ static int __devinit gdth_pci_probe_one(gdth_pci_str *pcistr,
ha->irq);
error = request_irq(ha->irq, gdth_interrupt,
- IRQF_DISABLED|IRQF_SHARED, "gdth", ha);
+ IRQF_SHARED, "gdth", ha);
if (error) {
printk("GDT-PCI: Unable to allocate IRQ\n");
goto out_host_put;
diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c
index b200b73..444ea3b 100644
--- a/drivers/scsi/hpsa.c
+++ b/drivers/scsi/hpsa.c
@@ -4025,10 +4025,10 @@ static int hpsa_request_irq(struct ctlr_info *h,
if (h->msix_vector || h->msi_vector)
rc = request_irq(h->intr[h->intr_mode], msixhandler,
- IRQF_DISABLED, h->devname, h);
+ 0, h->devname, h);
else
rc = request_irq(h->intr[h->intr_mode], intxhandler,
- IRQF_DISABLED, h->devname, h);
+ 0, h->devname, h);
if (rc) {
dev_err(&h->pdev->dev, "unable to get irq %d for %s\n",
h->intr[h->intr_mode], h->devname);
diff --git a/drivers/scsi/ibmvscsi/ibmvstgt.c b/drivers/scsi/ibmvscsi/ibmvstgt.c
index 2256bab..41d42f2 100644
--- a/drivers/scsi/ibmvscsi/ibmvstgt.c
+++ b/drivers/scsi/ibmvscsi/ibmvstgt.c
@@ -589,7 +589,7 @@ static int crq_queue_create(struct crq_queue *queue, struct srp_target *target)
}
err = request_irq(vport->dma_dev->irq, &ibmvstgt_interrupt,
- IRQF_DISABLED, "ibmvstgt", target);
+ 0, "ibmvstgt", target);
if (err)
goto req_irq_failed;
diff --git a/drivers/scsi/in2000.c b/drivers/scsi/in2000.c
index 112f1be..1efb20b 100644
--- a/drivers/scsi/in2000.c
+++ b/drivers/scsi/in2000.c
@@ -2016,7 +2016,7 @@ static int __init in2000_detect(struct scsi_host_template * tpnt)
write1_io(0, IO_FIFO_READ); /* start fifo out in read mode */
write1_io(0, IO_INTR_MASK); /* allow all ints */
x = int_tab[(switches & (SW_INT0 | SW_INT1)) >> SW_INT_SHIFT];
- if (request_irq(x, in2000_intr, IRQF_DISABLED, "in2000", instance)) {
+ if (request_irq(x, in2000_intr, 0, "in2000", instance)) {
printk("in2000_detect: Unable to allocate IRQ.\n");
detect_count--;
continue;
diff --git a/drivers/scsi/initio.c b/drivers/scsi/initio.c
index dd741bc..4c80c7d 100644
--- a/drivers/scsi/initio.c
+++ b/drivers/scsi/initio.c
@@ -2931,7 +2931,7 @@ static int initio_probe_one(struct pci_dev *pdev,
shost->base = host->addr;
shost->sg_tablesize = TOTAL_SG_ENTRY;
- error = request_irq(pdev->irq, i91u_intr, IRQF_DISABLED|IRQF_SHARED, "i91u", shost);
+ error = request_irq(pdev->irq, i91u_intr, IRQF_SHARED, "i91u", shost);
if (error < 0) {
printk(KERN_WARNING "initio: Unable to request IRQ %d\n", pdev->irq);
goto out_free_scbs;
diff --git a/drivers/scsi/pas16.c b/drivers/scsi/pas16.c
index f2018b4..e75d43d 100644
--- a/drivers/scsi/pas16.c
+++ b/drivers/scsi/pas16.c
@@ -453,7 +453,7 @@ int __init pas16_detect(struct scsi_host_template * tpnt)
instance->irq = NCR5380_probe_irq(instance, PAS16_IRQS);
if (instance->irq != SCSI_IRQ_NONE)
- if (request_irq(instance->irq, pas16_intr, IRQF_DISABLED,
+ if (request_irq(instance->irq, pas16_intr, 0,
"pas16", instance)) {
printk("scsi%d : IRQ%d not free, interrupts disabled\n",
instance->host_no, instance->irq);
diff --git a/drivers/scsi/pm8001/pm8001_init.c b/drivers/scsi/pm8001/pm8001_init.c
index 172cefb..d148ba3 100644
--- a/drivers/scsi/pm8001/pm8001_init.c
+++ b/drivers/scsi/pm8001/pm8001_init.c
@@ -553,12 +553,10 @@ static u32 pm8001_setup_msix(struct pm8001_hba_info *pm8001_ha,
{
u32 i = 0, j = 0;
u32 number_of_intr = 1;
- int flag = 0;
u32 max_entry;
int rc;
max_entry = sizeof(pm8001_ha->msix_entries) /
sizeof(pm8001_ha->msix_entries[0]);
- flag |= IRQF_DISABLED;
for (i = 0; i < max_entry ; i++)
pm8001_ha->msix_entries[i].entry = i;
rc = pci_enable_msix(pm8001_ha->pdev, pm8001_ha->msix_entries,
@@ -567,7 +565,7 @@ static u32 pm8001_setup_msix(struct pm8001_hba_info *pm8001_ha,
if (!rc) {
for (i = 0; i < number_of_intr; i++) {
if (request_irq(pm8001_ha->msix_entries[i].vector,
- irq_handler, flag, DRV_NAME,
+ irq_handler, 0, DRV_NAME,
SHOST_TO_SAS_HA(pm8001_ha->shost))) {
for (j = 0; j < i; j++)
free_irq(
diff --git a/drivers/scsi/t128.c b/drivers/scsi/t128.c
index 041eaaa..d9142a2 100644
--- a/drivers/scsi/t128.c
+++ b/drivers/scsi/t128.c
@@ -259,7 +259,7 @@ found:
instance->irq = NCR5380_probe_irq(instance, T128_IRQS);
if (instance->irq != SCSI_IRQ_NONE)
- if (request_irq(instance->irq, t128_intr, IRQF_DISABLED, "t128",
+ if (request_irq(instance->irq, t128_intr, 0, "t128",
instance)) {
printk("scsi%d : IRQ%d not free, interrupts disabled\n",
instance->host_no, instance->irq);
diff --git a/drivers/scsi/u14-34f.c b/drivers/scsi/u14-34f.c
index 90e104d..5c50f9c 100644
--- a/drivers/scsi/u14-34f.c
+++ b/drivers/scsi/u14-34f.c
@@ -874,7 +874,7 @@ static int port_detect \
/* Board detected, allocate its IRQ */
if (request_irq(irq, do_interrupt_handler,
- IRQF_DISABLED | ((subversion == ESA) ? IRQF_SHARED : 0),
+ ((subversion == ESA) ? IRQF_SHARED : 0),
driver_name, (void *) &sha[j])) {
printk("%s: unable to allocate IRQ %u, detaching.\n", name, irq);
goto freelock;
diff --git a/drivers/scsi/wd7000.c b/drivers/scsi/wd7000.c
index 9ee0afe..8cab246 100644
--- a/drivers/scsi/wd7000.c
+++ b/drivers/scsi/wd7000.c
@@ -1253,7 +1253,7 @@ static int wd7000_init(Adapter * host)
return 0;
- if (request_irq(host->irq, wd7000_intr, IRQF_DISABLED, "wd7000", host)) {
+ if (request_irq(host->irq, wd7000_intr, 0, "wd7000", host)) {
printk("wd7000_init: can't get IRQ %d.\n", host->irq);
return (0);
}
--
1.7.4.1
^ permalink raw reply related
* parallel load of modules on an ARM multicore
From: Catalin Marinas @ 2011-09-22 8:52 UTC (permalink / raw)
To: linux-arm-kernel
In-Reply-To: <20110922072959.GA6897@mvista.com>
Hi George,
On 22 September 2011 08:29, George G. Davis <gdavis@mvista.com> wrote:
> On Mon, Jun 20, 2011 at 03:43:27PM +0200, EXTERNAL Waechtler Peter (Fa. TCP, CM-AI/PJ-CF31) wrote:
>> I'm getting unexpected results from loading several modules - some
>> of them in parallel - on an ARM11 MPcore system.
...
> In case anyone missed the subtlety, this report was for an ARM11 MPCore system
> with CONFIG_PREEMPT enabled. ?I've also been looking into this and various other
> memory corruption issues on ARM11 MPCore with CONFIG_PREEMPT enabled and have
> come to the conclusion that CONFIG_PREEMPT is broken on ARM11 MPCore.
>
> I added the following instrumentation in 3.1.0-rc4ish to watch for
> process migration in a few places of interest:
...
> Now with sufficient system stress, I get the following recurring problems
> (it's a 3-core system : ):
>
> load_module:2858: cpu was 0 but is now 1, memory corruption is possible
> load_module:2858: cpu was 0 but is now 2, memory corruption is possible
> load_module:2858: cpu was 1 but is now 0, memory corruption is possible
> load_module:2858: cpu was 1 but is now 2, memory corruption is possible
> load_module:2858: cpu was 2 but is now 0, memory corruption is possible
> load_module:2858: cpu was 2 but is now 1, memory corruption is possible
> pte_alloc_one:100: cpu was 0 but is now 1, memory corruption is possible
> pte_alloc_one:100: cpu was 0 but is now 2, memory corruption is possible
> pte_alloc_one:100: cpu was 1 but is now 0, memory corruption is possible
> pte_alloc_one:100: cpu was 1 but is now 2, memory corruption is possible
> pte_alloc_one:100: cpu was 2 but is now 0, memory corruption is possible
> pte_alloc_one:100: cpu was 2 but is now 1, memory corruption is possible
> pte_alloc_one_kernel:74: cpu was 2 but is now 1, memory corruption is possible
>
> With sufficient stress and extended run time, the system will eventually
> hang or oops with non-sensical oops traces - machine state does not
> make sense relative to the code excuting at the time of the oops.
I think your analysis is valid and these places are not safe with
CONFIG_PREEMPT enabled.
> The interesting point here is that each of the above contain critical
> sections in which ARM11 MPCore memory is inconsistent, i.e. cache on
> CPU A contains modified entries but then migration occurs and the
> cache is flushed on CPU B yet those cache ops called in the above
> cases do not implement ARM11 MPCore RWFO workarounds.
I agree, my follow-up patch to implement lazy cache flushing on
ARM11MPCore was meant for other uses (like drivers not calling
flush_dcache_page), I never had PREEMPT in mind.
> Furthermore,
> the current ARM11 MPCore RWFO workarounds for DMA et al are unsafe
> as well for the CONFIG_PREEMPT case because, again, process migration
> can occur during DMA cache maintance operations in between RWFO and
> cache op instructions resulting in memory inconsistencies for the
> DMA case - a very narrow but real window.
Yes, that's correct.
> So what's the recommendation, don't use CONFIG_PREEMPT on ARM11 MPCore?
>
> Are there any known fixes for CONFIG_PREEMPT on ARM11 MPCore if it
> is indeed broken as it appears?
The scenarios you have described look valid to me. I think for now we
can say that ARM11MPCore and PREEMPT don't go well together. This can
be fixed though by making sure that cache maintenance places with the
RWFO trick have the preemption disabled. But the RWFO has some
performance impact as well, so I would only use it where absolutely
necessary. In this case, I would just disable PREEMPT.
--
Catalin
^ permalink raw reply
* [RFC PATCH V6 4/4] cpuidle: Single/Global registration of idle states
From: Deepthi Dharwar @ 2011-09-22 8:34 UTC (permalink / raw)
To: linux-arm-kernel
In-Reply-To: <20110922082840.10520.85895.stgit@localhost6.localdomain6>
This patch makes the cpuidle_states structure global (single copy)
instead of per-cpu. The statistics needed on per-cpu basis
by the governor are kept per-cpu. This simplifies the cpuidle
subsystem as state registration is done by single cpu only.
Having single copy of cpuidle_states saves memory. Rare case
of asymmetric C-states can be handled within the cpuidle driver
and architectures such as POWER do not have asymmetric C-states.
ToDo:
====
Handle the case when idle states may change at run time
and acpi_processor_cst_has_changed() routine is called in a
better way than the current solution in this patch.
In this current solution where global registration is implemented,
the boot cpu on x86 would disable all the devices, repopulate the
states and later enable all the devices, irrespective of the cpu
that would receive the notification first.
Reference:
https://lkml.org/lkml/2011/4/25/83
Signed-off-by: Deepthi Dharwar <deepthi@linux.vnet.ibm.com>
Signed-off-by: Trinabh Gupta <g.trinabh@gmail.com>
---
arch/arm/mach-at91/cpuidle.c | 31 +++--
arch/arm/mach-davinci/cpuidle.c | 39 ++++---
arch/arm/mach-exynos4/cpuidle.c | 23 ++--
arch/arm/mach-kirkwood/cpuidle.c | 30 +++--
arch/arm/mach-omap2/cpuidle34xx.c | 73 ++++++++-----
arch/sh/kernel/cpu/shmobile/cpuidle.c | 18 ++-
drivers/acpi/processor_driver.c | 20 +--
drivers/acpi/processor_idle.c | 191 +++++++++++++++++++++++++++++----
drivers/cpuidle/cpuidle.c | 45 ++------
drivers/cpuidle/driver.c | 25 ++++
drivers/cpuidle/governors/ladder.c | 28 +++--
drivers/cpuidle/governors/menu.c | 20 ++-
drivers/cpuidle/sysfs.c | 3 -
drivers/idle/intel_idle.c | 80 +++++++++++---
include/acpi/processor.h | 1
include/linux/cpuidle.h | 19 ++-
16 files changed, 439 insertions(+), 207 deletions(-)
diff --git a/arch/arm/mach-at91/cpuidle.c b/arch/arm/mach-at91/cpuidle.c
index 4696a0d..93178f6 100644
--- a/arch/arm/mach-at91/cpuidle.c
+++ b/arch/arm/mach-at91/cpuidle.c
@@ -33,6 +33,7 @@ static struct cpuidle_driver at91_idle_driver = {
/* Actual code that puts the SoC in different idle states */
static int at91_enter_idle(struct cpuidle_device *dev,
+ struct cpuidle_driver *drv,
int index)
{
struct timeval before, after;
@@ -64,27 +65,29 @@ static int at91_enter_idle(struct cpuidle_device *dev,
static int at91_init_cpuidle(void)
{
struct cpuidle_device *device;
-
- cpuidle_register_driver(&at91_idle_driver);
+ struct cpuidle_driver *driver = &at91_idle_driver;
device = &per_cpu(at91_cpuidle_device, smp_processor_id());
device->state_count = AT91_MAX_STATES;
+ driver->state_count = AT91_MAX_STATES;
/* Wait for interrupt state */
- device->states[0].enter = at91_enter_idle;
- device->states[0].exit_latency = 1;
- device->states[0].target_residency = 10000;
- device->states[0].flags = CPUIDLE_FLAG_TIME_VALID;
- strcpy(device->states[0].name, "WFI");
- strcpy(device->states[0].desc, "Wait for interrupt");
+ driver->states[0].enter = at91_enter_idle;
+ driver->states[0].exit_latency = 1;
+ driver->states[0].target_residency = 10000;
+ driver->states[0].flags = CPUIDLE_FLAG_TIME_VALID;
+ strcpy(driver->states[0].name, "WFI");
+ strcpy(driver->states[0].desc, "Wait for interrupt");
/* Wait for interrupt and RAM self refresh state */
- device->states[1].enter = at91_enter_idle;
- device->states[1].exit_latency = 10;
- device->states[1].target_residency = 10000;
- device->states[1].flags = CPUIDLE_FLAG_TIME_VALID;
- strcpy(device->states[1].name, "RAM_SR");
- strcpy(device->states[1].desc, "WFI and RAM Self Refresh");
+ driver->states[1].enter = at91_enter_idle;
+ driver->states[1].exit_latency = 10;
+ driver->states[1].target_residency = 10000;
+ driver->states[1].flags = CPUIDLE_FLAG_TIME_VALID;
+ strcpy(driver->states[1].name, "RAM_SR");
+ strcpy(driver->states[1].desc, "WFI and RAM Self Refresh");
+
+ cpuidle_register_driver(&at91_idle_driver);
if (cpuidle_register_device(device)) {
printk(KERN_ERR "at91_init_cpuidle: Failed registering\n");
diff --git a/arch/arm/mach-davinci/cpuidle.c b/arch/arm/mach-davinci/cpuidle.c
index f2d2f34..dbeeccd 100644
--- a/arch/arm/mach-davinci/cpuidle.c
+++ b/arch/arm/mach-davinci/cpuidle.c
@@ -78,6 +78,7 @@ static struct davinci_ops davinci_states[DAVINCI_CPUIDLE_MAX_STATES] = {
/* Actual code that puts the SoC in different idle states */
static int davinci_enter_idle(struct cpuidle_device *dev,
+ struct cpuidle_driver *drv,
int index)
{
struct cpuidle_state_usage *state_usage = &dev->states_usage[index];
@@ -109,6 +110,7 @@ static int __init davinci_cpuidle_probe(struct platform_device *pdev)
{
int ret;
struct cpuidle_device *device;
+ struct cpuidle_driver *driver = &davinci_idle_driver;
struct davinci_cpuidle_config *pdata = pdev->dev.platform_data;
device = &per_cpu(davinci_cpuidle_device, smp_processor_id());
@@ -120,32 +122,33 @@ static int __init davinci_cpuidle_probe(struct platform_device *pdev)
ddr2_reg_base = pdata->ddr2_ctlr_base;
- ret = cpuidle_register_driver(&davinci_idle_driver);
- if (ret) {
- dev_err(&pdev->dev, "failed to register driver\n");
- return ret;
- }
-
/* Wait for interrupt state */
- device->states[0].enter = davinci_enter_idle;
- device->states[0].exit_latency = 1;
- device->states[0].target_residency = 10000;
- device->states[0].flags = CPUIDLE_FLAG_TIME_VALID;
- strcpy(device->states[0].name, "WFI");
- strcpy(device->states[0].desc, "Wait for interrupt");
+ driver->states[0].enter = davinci_enter_idle;
+ driver->states[0].exit_latency = 1;
+ driver->states[0].target_residency = 10000;
+ driver->states[0].flags = CPUIDLE_FLAG_TIME_VALID;
+ strcpy(driver->states[0].name, "WFI");
+ strcpy(driver->states[0].desc, "Wait for interrupt");
/* Wait for interrupt and DDR self refresh state */
- device->states[1].enter = davinci_enter_idle;
- device->states[1].exit_latency = 10;
- device->states[1].target_residency = 10000;
- device->states[1].flags = CPUIDLE_FLAG_TIME_VALID;
- strcpy(device->states[1].name, "DDR SR");
- strcpy(device->states[1].desc, "WFI and DDR Self Refresh");
+ driver->states[1].enter = davinci_enter_idle;
+ driver->states[1].exit_latency = 10;
+ driver->states[1].target_residency = 10000;
+ driver->states[1].flags = CPUIDLE_FLAG_TIME_VALID;
+ strcpy(driver->states[1].name, "DDR SR");
+ strcpy(driver->states[1].desc, "WFI and DDR Self Refresh");
if (pdata->ddr2_pdown)
davinci_states[1].flags |= DAVINCI_CPUIDLE_FLAGS_DDR2_PWDN;
cpuidle_set_statedata(&device->states_usage[1], &davinci_states[1]);
device->state_count = DAVINCI_CPUIDLE_MAX_STATES;
+ driver->state_count = DAVINCI_CPUIDLE_MAX_STATES;
+
+ ret = cpuidle_register_driver(&davinci_idle_driver);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to register driver\n");
+ return ret;
+ }
ret = cpuidle_register_device(device);
if (ret) {
diff --git a/arch/arm/mach-exynos4/cpuidle.c b/arch/arm/mach-exynos4/cpuidle.c
index ea026e7..35f6502 100644
--- a/arch/arm/mach-exynos4/cpuidle.c
+++ b/arch/arm/mach-exynos4/cpuidle.c
@@ -16,6 +16,7 @@
#include <asm/proc-fns.h>
static int exynos4_enter_idle(struct cpuidle_device *dev,
+ struct cpuidle_driver *drv,
int index);
static struct cpuidle_state exynos4_cpuidle_set[] = {
@@ -37,6 +38,7 @@ static struct cpuidle_driver exynos4_idle_driver = {
};
static int exynos4_enter_idle(struct cpuidle_device *dev,
+ struct cpuidle_driver *drv,
int index)
{
struct timeval before, after;
@@ -60,22 +62,23 @@ static int __init exynos4_init_cpuidle(void)
{
int i, max_cpuidle_state, cpu_id;
struct cpuidle_device *device;
-
+ struct cpuidle_driver *drv = &exynos4_idle_driver;
+
+ /* Setup cpuidle driver */
+ drv->state_count = (sizeof(exynos4_cpuidle_set) /
+ sizeof(struct cpuidle_state));
+ max_cpuidle_state = drv->state_count;
+ for (i = 0; i < max_cpuidle_state; i++) {
+ memcpy(&drv->states[i], &exynos4_cpuidle_set[i],
+ sizeof(struct cpuidle_state));
+ }
cpuidle_register_driver(&exynos4_idle_driver);
for_each_cpu(cpu_id, cpu_online_mask) {
device = &per_cpu(exynos4_cpuidle_device, cpu_id);
device->cpu = cpu_id;
- device->state_count = (sizeof(exynos4_cpuidle_set) /
- sizeof(struct cpuidle_state));
-
- max_cpuidle_state = device->state_count;
-
- for (i = 0; i < max_cpuidle_state; i++) {
- memcpy(&device->states[i], &exynos4_cpuidle_set[i],
- sizeof(struct cpuidle_state));
- }
+ device->state_count = drv->state_count;
if (cpuidle_register_device(device)) {
printk(KERN_ERR "CPUidle register device failed\n,");
diff --git a/arch/arm/mach-kirkwood/cpuidle.c b/arch/arm/mach-kirkwood/cpuidle.c
index 358dd80..ffd690d 100644
--- a/arch/arm/mach-kirkwood/cpuidle.c
+++ b/arch/arm/mach-kirkwood/cpuidle.c
@@ -32,6 +32,7 @@ static DEFINE_PER_CPU(struct cpuidle_device, kirkwood_cpuidle_device);
/* Actual code that puts the SoC in different idle states */
static int kirkwood_enter_idle(struct cpuidle_device *dev,
+ struct cpuidle_driver *drv,
int index)
{
struct timeval before, after;
@@ -68,28 +69,29 @@ static int kirkwood_enter_idle(struct cpuidle_device *dev,
static int kirkwood_init_cpuidle(void)
{
struct cpuidle_device *device;
-
- cpuidle_register_driver(&kirkwood_idle_driver);
+ struct cpuidle_driver *driver = &kirkwood_idle_driver;
device = &per_cpu(kirkwood_cpuidle_device, smp_processor_id());
device->state_count = KIRKWOOD_MAX_STATES;
+ driver->state_count = KIRKWOOD_MAX_STATES;
/* Wait for interrupt state */
- device->states[0].enter = kirkwood_enter_idle;
- device->states[0].exit_latency = 1;
- device->states[0].target_residency = 10000;
- device->states[0].flags = CPUIDLE_FLAG_TIME_VALID;
- strcpy(device->states[0].name, "WFI");
- strcpy(device->states[0].desc, "Wait for interrupt");
+ driver->states[0].enter = kirkwood_enter_idle;
+ driver->states[0].exit_latency = 1;
+ driver->states[0].target_residency = 10000;
+ driver->states[0].flags = CPUIDLE_FLAG_TIME_VALID;
+ strcpy(driver->states[0].name, "WFI");
+ strcpy(driver->states[0].desc, "Wait for interrupt");
/* Wait for interrupt and DDR self refresh state */
- device->states[1].enter = kirkwood_enter_idle;
- device->states[1].exit_latency = 10;
- device->states[1].target_residency = 10000;
- device->states[1].flags = CPUIDLE_FLAG_TIME_VALID;
- strcpy(device->states[1].name, "DDR SR");
- strcpy(device->states[1].desc, "WFI and DDR Self Refresh");
+ driver->states[1].enter = kirkwood_enter_idle;
+ driver->states[1].exit_latency = 10;
+ driver->states[1].target_residency = 10000;
+ driver->states[1].flags = CPUIDLE_FLAG_TIME_VALID;
+ strcpy(driver->states[1].name, "DDR SR");
+ strcpy(driver->states[1].desc, "WFI and DDR Self Refresh");
+ cpuidle_register_driver(&kirkwood_idle_driver);
if (cpuidle_register_device(device)) {
printk(KERN_ERR "kirkwood_init_cpuidle: Failed registering\n");
return -EIO;
diff --git a/arch/arm/mach-omap2/cpuidle34xx.c b/arch/arm/mach-omap2/cpuidle34xx.c
index d3fce7b..1fe35c2 100644
--- a/arch/arm/mach-omap2/cpuidle34xx.c
+++ b/arch/arm/mach-omap2/cpuidle34xx.c
@@ -88,12 +88,14 @@ static int _cpuidle_deny_idle(struct powerdomain *pwrdm,
/**
* omap3_enter_idle - Programs OMAP3 to enter the specified state
* @dev: cpuidle device
+ * @drv: cpuidle driver
* @index: the index of state to be entered
*
* Called from the CPUidle framework to program the device to the
* specified target state selected by the governor.
*/
static int omap3_enter_idle(struct cpuidle_device *dev,
+ struct cpuidle_driver *drv,
int index)
{
struct omap3_idle_statedata *cx =
@@ -148,6 +150,7 @@ return_sleep_time:
/**
* next_valid_state - Find next valid C-state
* @dev: cpuidle device
+ * @drv: cpuidle driver
* @index: Index of currently selected c-state
*
* If the state corresponding to index is valid, index is returned back
@@ -158,10 +161,11 @@ return_sleep_time:
* if it satisfies the enable_off_mode condition.
*/
static int next_valid_state(struct cpuidle_device *dev,
+ struct cpuidle_driver *drv,
int index)
{
struct cpuidle_state_usage *curr_usage = &dev->states_usage[index];
- struct cpuidle_state *curr = &dev->states[index];
+ struct cpuidle_state *curr = &drv->states[index];
struct omap3_idle_statedata *cx = cpuidle_get_statedata(curr_usage);
u32 mpu_deepest_state = PWRDM_POWER_RET;
u32 core_deepest_state = PWRDM_POWER_RET;
@@ -188,7 +192,7 @@ static int next_valid_state(struct cpuidle_device *dev,
/* Reach the current state starting at highest C-state */
for (; idx >= 0; idx--) {
- if (&dev->states[idx] == curr) {
+ if (&drv->states[idx] == curr) {
next_index = idx;
break;
}
@@ -224,12 +228,14 @@ static int next_valid_state(struct cpuidle_device *dev,
/**
* omap3_enter_idle_bm - Checks for any bus activity
* @dev: cpuidle device
+ * @drv: cpuidle driver
* @index: array index of target state to be programmed
*
* This function checks for any pending activity and then programs
* the device to the specified or a safer state.
*/
static int omap3_enter_idle_bm(struct cpuidle_device *dev,
+ struct cpuidle_driver *drv,
int index)
{
int new_state_idx;
@@ -238,7 +244,7 @@ static int omap3_enter_idle_bm(struct cpuidle_device *dev,
int ret;
if (!omap3_can_sleep()) {
- new_state_idx = dev->safe_state_index;
+ new_state_idx = drv->safe_state_index;
goto select_state;
}
@@ -248,7 +254,7 @@ static int omap3_enter_idle_bm(struct cpuidle_device *dev,
*/
cam_state = pwrdm_read_pwrst(cam_pd);
if (cam_state == PWRDM_POWER_ON) {
- new_state_idx = dev->safe_state_index;
+ new_state_idx = drv->safe_state_index;
goto select_state;
}
@@ -275,10 +281,10 @@ static int omap3_enter_idle_bm(struct cpuidle_device *dev,
if (per_next_state != per_saved_state)
pwrdm_set_next_pwrst(per_pd, per_next_state);
- new_state_idx = next_valid_state(dev, index);
+ new_state_idx = next_valid_state(dev, drv, index);
select_state:
- ret = omap3_enter_idle(dev, new_state_idx);
+ ret = omap3_enter_idle(dev, drv, new_state_idx);
/* Restore original PER state if it was modified */
if (per_next_state != per_saved_state)
@@ -311,22 +317,30 @@ struct cpuidle_driver omap3_idle_driver = {
.owner = THIS_MODULE,
};
-/* Helper to fill the C-state common data and register the driver_data */
-static inline struct omap3_idle_statedata *_fill_cstate(
- struct cpuidle_device *dev,
+/* Helper to fill the C-state common data*/
+static inline void _fill_cstate(struct cpuidle_driver *drv,
int idx, const char *descr)
{
- struct omap3_idle_statedata *cx = &omap3_idle_data[idx];
- struct cpuidle_state *state = &dev->states[idx];
- struct cpuidle_state_usage *state_usage = &dev->states_usage[idx];
+ struct cpuidle_state *state = &drv->states[idx];
state->exit_latency = cpuidle_params_table[idx].exit_latency;
state->target_residency = cpuidle_params_table[idx].target_residency;
state->flags = CPUIDLE_FLAG_TIME_VALID;
state->enter = omap3_enter_idle_bm;
- cx->valid = cpuidle_params_table[idx].valid;
sprintf(state->name, "C%d", idx + 1);
strncpy(state->desc, descr, CPUIDLE_DESC_LEN);
+
+}
+
+/* Helper to register the driver_data */
+static inline struct omap3_idle_statedata *_fill_cstate_usage(
+ struct cpuidle_device *dev,
+ int idx)
+{
+ struct omap3_idle_statedata *cx = &omap3_idle_data[idx];
+ struct cpuidle_state_usage *state_usage = &dev->states_usage[idx];
+
+ cx->valid = cpuidle_params_table[idx].valid;
cpuidle_set_statedata(state_usage, cx);
return cx;
@@ -341,6 +355,7 @@ static inline struct omap3_idle_statedata *_fill_cstate(
int __init omap3_idle_init(void)
{
struct cpuidle_device *dev;
+ struct cpuidle_driver *drv = &omap3_idle_driver;
struct omap3_idle_statedata *cx;
mpu_pd = pwrdm_lookup("mpu_pwrdm");
@@ -348,45 +363,52 @@ int __init omap3_idle_init(void)
per_pd = pwrdm_lookup("per_pwrdm");
cam_pd = pwrdm_lookup("cam_pwrdm");
- cpuidle_register_driver(&omap3_idle_driver);
+
+ drv->safe_state_index = -1;
dev = &per_cpu(omap3_idle_dev, smp_processor_id());
- dev->safe_state_index = -1;
/* C1 . MPU WFI + Core active */
- cx = _fill_cstate(dev, 0, "MPU ON + CORE ON");
- (&dev->states[0])->enter = omap3_enter_idle;
- dev->safe_state_index = 0;
+ _fill_cstate(drv, 0, "MPU ON + CORE ON");
+ (&drv->states[0])->enter = omap3_enter_idle;
+ drv->safe_state_index = 0;
+ cx = _fill_cstate_usage(dev, 0);
cx->valid = 1; /* C1 is always valid */
cx->mpu_state = PWRDM_POWER_ON;
cx->core_state = PWRDM_POWER_ON;
/* C2 . MPU WFI + Core inactive */
- cx = _fill_cstate(dev, 1, "MPU ON + CORE ON");
+ _fill_cstate(drv, 1, "MPU ON + CORE ON");
+ cx = _fill_cstate_usage(dev, 1);
cx->mpu_state = PWRDM_POWER_ON;
cx->core_state = PWRDM_POWER_ON;
/* C3 . MPU CSWR + Core inactive */
- cx = _fill_cstate(dev, 2, "MPU RET + CORE ON");
+ _fill_cstate(drv, 2, "MPU RET + CORE ON");
+ cx = _fill_cstate_usage(dev, 2);
cx->mpu_state = PWRDM_POWER_RET;
cx->core_state = PWRDM_POWER_ON;
/* C4 . MPU OFF + Core inactive */
- cx = _fill_cstate(dev, 3, "MPU OFF + CORE ON");
+ _fill_cstate(drv, 3, "MPU OFF + CORE ON");
+ cx = _fill_cstate_usage(dev, 3);
cx->mpu_state = PWRDM_POWER_OFF;
cx->core_state = PWRDM_POWER_ON;
/* C5 . MPU RET + Core RET */
- cx = _fill_cstate(dev, 4, "MPU RET + CORE RET");
+ _fill_cstate(drv, 4, "MPU RET + CORE RET");
+ cx = _fill_cstate_usage(dev, 4);
cx->mpu_state = PWRDM_POWER_RET;
cx->core_state = PWRDM_POWER_RET;
/* C6 . MPU OFF + Core RET */
- cx = _fill_cstate(dev, 5, "MPU OFF + CORE RET");
+ _fill_cstate(drv, 5, "MPU OFF + CORE RET");
+ cx = _fill_cstate_usage(dev, 5);
cx->mpu_state = PWRDM_POWER_OFF;
cx->core_state = PWRDM_POWER_RET;
/* C7 . MPU OFF + Core OFF */
- cx = _fill_cstate(dev, 6, "MPU OFF + CORE OFF");
+ _fill_cstate(drv, 6, "MPU OFF + CORE OFF");
+ cx = _fill_cstate_usage(dev, 6);
/*
* Erratum i583: implementation for ES rev < Es1.2 on 3630. We cannot
* enable OFF mode in a stable form for previous revisions.
@@ -400,6 +422,9 @@ int __init omap3_idle_init(void)
cx->mpu_state = PWRDM_POWER_OFF;
cx->core_state = PWRDM_POWER_OFF;
+ drv->state_count = OMAP3_NUM_STATES;
+ cpuidle_register_driver(&omap3_idle_driver);
+
dev->state_count = OMAP3_NUM_STATES;
if (cpuidle_register_device(dev)) {
printk(KERN_ERR "%s: CPUidle register device failed\n",
diff --git a/arch/sh/kernel/cpu/shmobile/cpuidle.c b/arch/sh/kernel/cpu/shmobile/cpuidle.c
index 7be50d4c..ad1012a 100644
--- a/arch/sh/kernel/cpu/shmobile/cpuidle.c
+++ b/arch/sh/kernel/cpu/shmobile/cpuidle.c
@@ -25,6 +25,7 @@ static unsigned long cpuidle_mode[] = {
};
static int cpuidle_sleep_enter(struct cpuidle_device *dev,
+ struct cpuidle_driver *drv,
int index)
{
unsigned long allowed_mode = arch_hwblk_sleep_mode();
@@ -64,19 +65,19 @@ static struct cpuidle_driver cpuidle_driver = {
void sh_mobile_setup_cpuidle(void)
{
struct cpuidle_device *dev = &cpuidle_dev;
+ struct cpuidle_driver *drv = &cpuidle_driver;
struct cpuidle_state *state;
int i;
- cpuidle_register_driver(&cpuidle_driver);
for (i = 0; i < CPUIDLE_STATE_MAX; i++) {
- dev->states[i].name[0] = '\0';
- dev->states[i].desc[0] = '\0';
+ drv->states[i].name[0] = '\0';
+ drv->states[i].desc[0] = '\0';
}
i = CPUIDLE_DRIVER_STATE_START;
- state = &dev->states[i++];
+ state = &drv->states[i++];
snprintf(state->name, CPUIDLE_NAME_LEN, "C1");
strncpy(state->desc, "SuperH Sleep Mode", CPUIDLE_DESC_LEN);
state->exit_latency = 1;
@@ -86,10 +87,10 @@ void sh_mobile_setup_cpuidle(void)
state->flags |= CPUIDLE_FLAG_TIME_VALID;
state->enter = cpuidle_sleep_enter;
- dev->safe_state_index = i-1;
+ drv->safe_state_index = i-1;
if (sh_mobile_sleep_supported & SUSP_SH_SF) {
- state = &dev->states[i++];
+ state = &drv->states[i++];
snprintf(state->name, CPUIDLE_NAME_LEN, "C2");
strncpy(state->desc, "SuperH Sleep Mode [SF]",
CPUIDLE_DESC_LEN);
@@ -102,7 +103,7 @@ void sh_mobile_setup_cpuidle(void)
}
if (sh_mobile_sleep_supported & SUSP_SH_STANDBY) {
- state = &dev->states[i++];
+ state = &drv->states[i++];
snprintf(state->name, CPUIDLE_NAME_LEN, "C3");
strncpy(state->desc, "SuperH Mobile Standby Mode [SF]",
CPUIDLE_DESC_LEN);
@@ -114,7 +115,10 @@ void sh_mobile_setup_cpuidle(void)
state->enter = cpuidle_sleep_enter;
}
+ drv->state_count = i;
dev->state_count = i;
+ cpuidle_register_driver(&cpuidle_driver);
+
cpuidle_register_device(dev);
}
diff --git a/drivers/acpi/processor_driver.c b/drivers/acpi/processor_driver.c
index a4e0f1b..9d7bc9f 100644
--- a/drivers/acpi/processor_driver.c
+++ b/drivers/acpi/processor_driver.c
@@ -426,7 +426,7 @@ static int acpi_cpu_soft_notify(struct notifier_block *nfb,
if (action == CPU_ONLINE && pr) {
acpi_processor_ppc_has_changed(pr, 0);
- acpi_processor_cst_has_changed(pr);
+ acpi_processor_hotplug(pr);
acpi_processor_reevaluate_tstate(pr, action);
acpi_processor_tstate_has_changed(pr);
}
@@ -503,8 +503,7 @@ static int __cpuinit acpi_processor_add(struct acpi_device *device)
acpi_processor_get_throttling_info(pr);
acpi_processor_get_limit_info(pr);
-
- if (cpuidle_get_driver() == &acpi_idle_driver)
+ if (!cpuidle_get_driver() || cpuidle_get_driver() == &acpi_idle_driver)
acpi_processor_power_init(pr, device);
pr->cdev = thermal_cooling_device_register("Processor", device,
@@ -800,17 +799,9 @@ static int __init acpi_processor_init(void)
memset(&errata, 0, sizeof(errata));
- if (!cpuidle_register_driver(&acpi_idle_driver)) {
- printk(KERN_DEBUG "ACPI: %s registered with cpuidle\n",
- acpi_idle_driver.name);
- } else {
- printk(KERN_DEBUG "ACPI: acpi_idle yielding to %s\n",
- cpuidle_get_driver()->name);
- }
-
result = acpi_bus_register_driver(&acpi_processor_driver);
if (result < 0)
- goto out_cpuidle;
+ return result;
acpi_processor_install_hotplug_notify();
@@ -821,11 +812,6 @@ static int __init acpi_processor_init(void)
acpi_processor_throttling_init();
return 0;
-
-out_cpuidle:
- cpuidle_unregister_driver(&acpi_idle_driver);
-
- return result;
}
static void __exit acpi_processor_exit(void)
diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c
index b98c752..24fe3af 100644
--- a/drivers/acpi/processor_idle.c
+++ b/drivers/acpi/processor_idle.c
@@ -741,11 +741,13 @@ static inline void acpi_idle_do_entry(struct acpi_processor_cx *cx)
/**
* acpi_idle_enter_c1 - enters an ACPI C1 state-type
* @dev: the target CPU
+ * @drv: cpuidle driver containing cpuidle state info
* @index: index of target state
*
* This is equivalent to the HALT instruction.
*/
-static int acpi_idle_enter_c1(struct cpuidle_device *dev, int index)
+static int acpi_idle_enter_c1(struct cpuidle_device *dev,
+ struct cpuidle_driver *drv, int index)
{
ktime_t kt1, kt2;
s64 idle_time;
@@ -787,9 +789,11 @@ static int acpi_idle_enter_c1(struct cpuidle_device *dev, int index)
/**
* acpi_idle_enter_simple - enters an ACPI state without BM handling
* @dev: the target CPU
+ * @drv: cpuidle driver with cpuidle state information
* @index: the index of suggested state
*/
-static int acpi_idle_enter_simple(struct cpuidle_device *dev, int index)
+static int acpi_idle_enter_simple(struct cpuidle_device *dev,
+ struct cpuidle_driver *drv, int index)
{
struct acpi_processor *pr;
struct cpuidle_state_usage *state_usage = &dev->states_usage[index];
@@ -869,11 +873,13 @@ static DEFINE_SPINLOCK(c3_lock);
/**
* acpi_idle_enter_bm - enters C3 with proper BM handling
* @dev: the target CPU
+ * @drv: cpuidle driver containing state data
* @index: the index of suggested state
*
* If BM is detected, the deepest non-C3 idle state is entered instead.
*/
-static int acpi_idle_enter_bm(struct cpuidle_device *dev, int index)
+static int acpi_idle_enter_bm(struct cpuidle_device *dev,
+ struct cpuidle_driver *drv, int index)
{
struct acpi_processor *pr;
struct cpuidle_state_usage *state_usage = &dev->states_usage[index];
@@ -896,9 +902,9 @@ static int acpi_idle_enter_bm(struct cpuidle_device *dev, int index)
}
if (!cx->bm_sts_skip && acpi_idle_bm_check()) {
- if (dev->safe_state_index >= 0) {
- return dev->states[dev->safe_state_index].enter(dev,
- dev->safe_state_index);
+ if (drv->safe_state_index >= 0) {
+ return drv->states[drv->safe_state_index].enter(dev,
+ drv, drv->safe_state_index);
} else {
local_irq_disable();
acpi_safe_halt();
@@ -993,14 +999,15 @@ struct cpuidle_driver acpi_idle_driver = {
};
/**
- * acpi_processor_setup_cpuidle - prepares and configures CPUIDLE
+ * acpi_processor_setup_cpuidle_cx - prepares and configures CPUIDLE
+ * device i.e. per-cpu data
+ *
* @pr: the ACPI processor
*/
-static int acpi_processor_setup_cpuidle(struct acpi_processor *pr)
+static int acpi_processor_setup_cpuidle_cx(struct acpi_processor *pr)
{
int i, count = CPUIDLE_DRIVER_STATE_START;
struct acpi_processor_cx *cx;
- struct cpuidle_state *state;
struct cpuidle_state_usage *state_usage;
struct cpuidle_device *dev = &pr->power.dev;
@@ -1012,18 +1019,12 @@ static int acpi_processor_setup_cpuidle(struct acpi_processor *pr)
}
dev->cpu = pr->id;
- dev->safe_state_index = -1;
- for (i = 0; i < CPUIDLE_STATE_MAX; i++) {
- dev->states[i].name[0] = '\0';
- dev->states[i].desc[0] = '\0';
- }
if (max_cstate == 0)
max_cstate = 1;
for (i = 1; i < ACPI_PROCESSOR_MAX_POWER && i <= max_cstate; i++) {
cx = &pr->power.states[i];
- state = &dev->states[count];
state_usage = &dev->states_usage[count];
if (!cx->valid)
@@ -1035,8 +1036,64 @@ static int acpi_processor_setup_cpuidle(struct acpi_processor *pr)
!(acpi_gbl_FADT.flags & ACPI_FADT_C2_MP_SUPPORTED))
continue;
#endif
+
cpuidle_set_statedata(state_usage, cx);
+ count++;
+ if (count == CPUIDLE_STATE_MAX)
+ break;
+ }
+
+ dev->state_count = count;
+
+ if (!count)
+ return -EINVAL;
+
+ return 0;
+}
+
+/**
+ * acpi_processor_setup_cpuidle states- prepares and configures cpuidle
+ * global state data i.e. idle routines
+ *
+ * @pr: the ACPI processor
+ */
+static int acpi_processor_setup_cpuidle_states(struct acpi_processor *pr)
+{
+ int i, count = CPUIDLE_DRIVER_STATE_START;
+ struct acpi_processor_cx *cx;
+ struct cpuidle_state *state;
+ struct cpuidle_driver *drv = &acpi_idle_driver;
+
+ if (!pr->flags.power_setup_done)
+ return -EINVAL;
+
+ if (pr->flags.power == 0)
+ return -EINVAL;
+
+ drv->safe_state_index = -1;
+ for (i = 0; i < CPUIDLE_STATE_MAX; i++) {
+ drv->states[i].name[0] = '\0';
+ drv->states[i].desc[0] = '\0';
+ }
+
+ if (max_cstate == 0)
+ max_cstate = 1;
+
+ for (i = 1; i < ACPI_PROCESSOR_MAX_POWER && i <= max_cstate; i++) {
+ cx = &pr->power.states[i];
+
+ if (!cx->valid)
+ continue;
+
+#ifdef CONFIG_HOTPLUG_CPU
+ if ((cx->type != ACPI_STATE_C1) && (num_online_cpus() > 1) &&
+ !pr->flags.has_cst &&
+ !(acpi_gbl_FADT.flags & ACPI_FADT_C2_MP_SUPPORTED))
+ continue;
+#endif
+
+ state = &drv->states[count];
snprintf(state->name, CPUIDLE_NAME_LEN, "C%d", i);
strncpy(state->desc, cx->desc, CPUIDLE_DESC_LEN);
state->exit_latency = cx->latency;
@@ -1049,13 +1106,13 @@ static int acpi_processor_setup_cpuidle(struct acpi_processor *pr)
state->flags |= CPUIDLE_FLAG_TIME_VALID;
state->enter = acpi_idle_enter_c1;
- dev->safe_state_index = count;
+ drv->safe_state_index = count;
break;
case ACPI_STATE_C2:
state->flags |= CPUIDLE_FLAG_TIME_VALID;
state->enter = acpi_idle_enter_simple;
- dev->safe_state_index = count;
+ drv->safe_state_index = count;
break;
case ACPI_STATE_C3:
@@ -1071,7 +1128,7 @@ static int acpi_processor_setup_cpuidle(struct acpi_processor *pr)
break;
}
- dev->state_count = count;
+ drv->state_count = count;
if (!count)
return -EINVAL;
@@ -1079,7 +1136,7 @@ static int acpi_processor_setup_cpuidle(struct acpi_processor *pr)
return 0;
}
-int acpi_processor_cst_has_changed(struct acpi_processor *pr)
+int acpi_processor_hotplug(struct acpi_processor *pr)
{
int ret = 0;
@@ -1100,7 +1157,7 @@ int acpi_processor_cst_has_changed(struct acpi_processor *pr)
cpuidle_disable_device(&pr->power.dev);
acpi_processor_get_power_info(pr);
if (pr->flags.power) {
- acpi_processor_setup_cpuidle(pr);
+ acpi_processor_setup_cpuidle_cx(pr);
ret = cpuidle_enable_device(&pr->power.dev);
}
cpuidle_resume_and_unlock();
@@ -1108,10 +1165,72 @@ int acpi_processor_cst_has_changed(struct acpi_processor *pr)
return ret;
}
+int acpi_processor_cst_has_changed(struct acpi_processor *pr)
+{
+ int cpu;
+ struct acpi_processor *_pr;
+
+ if (disabled_by_idle_boot_param())
+ return 0;
+
+ if (!pr)
+ return -EINVAL;
+
+ if (nocst)
+ return -ENODEV;
+
+ if (!pr->flags.power_setup_done)
+ return -ENODEV;
+
+ /*
+ * FIXME: Design the ACPI notification to make it once per
+ * system instead of once per-cpu. This condition is a hack
+ * to make the code that updates C-States be called once.
+ */
+
+ if (smp_processor_id() == 0 &&
+ cpuidle_get_driver() == &acpi_idle_driver) {
+
+ cpuidle_pause_and_lock();
+ /* Protect against cpu-hotplug */
+ get_online_cpus();
+
+ /* Disable all cpuidle devices */
+ for_each_online_cpu(cpu) {
+ _pr = per_cpu(processors, cpu);
+ if (!_pr || !_pr->flags.power_setup_done)
+ continue;
+ cpuidle_disable_device(&_pr->power.dev);
+ }
+
+ /* Populate Updated C-state information */
+ acpi_processor_setup_cpuidle_states(pr);
+
+ /* Enable all cpuidle devices */
+ for_each_online_cpu(cpu) {
+ _pr = per_cpu(processors, cpu);
+ if (!_pr || !_pr->flags.power_setup_done)
+ continue;
+ acpi_processor_get_power_info(_pr);
+ if (_pr->flags.power) {
+ acpi_processor_setup_cpuidle_cx(_pr);
+ cpuidle_enable_device(&_pr->power.dev);
+ }
+ }
+ put_online_cpus();
+ cpuidle_resume_and_unlock();
+ }
+
+ return 0;
+}
+
+static int acpi_processor_registered;
+
int __cpuinit acpi_processor_power_init(struct acpi_processor *pr,
struct acpi_device *device)
{
acpi_status status = 0;
+ int retval;
static int first_run;
if (disabled_by_idle_boot_param())
@@ -1148,9 +1267,26 @@ int __cpuinit acpi_processor_power_init(struct acpi_processor *pr,
* platforms that only support C1.
*/
if (pr->flags.power) {
- acpi_processor_setup_cpuidle(pr);
- if (cpuidle_register_device(&pr->power.dev))
- return -EIO;
+ /* Register acpi_idle_driver if not already registered */
+ if (!acpi_processor_registered) {
+ acpi_processor_setup_cpuidle_states(pr);
+ retval = cpuidle_register_driver(&acpi_idle_driver);
+ if (retval)
+ return retval;
+ printk(KERN_DEBUG "ACPI: %s registered with cpuidle\n",
+ acpi_idle_driver.name);
+ }
+ /* Register per-cpu cpuidle_device. Cpuidle driver
+ * must already be registered before registering device
+ */
+ acpi_processor_setup_cpuidle_cx(pr);
+ retval = cpuidle_register_device(&pr->power.dev);
+ if (retval) {
+ if (acpi_processor_registered == 0)
+ cpuidle_unregister_driver(&acpi_idle_driver);
+ return retval;
+ }
+ acpi_processor_registered++;
}
return 0;
}
@@ -1161,8 +1297,13 @@ int acpi_processor_power_exit(struct acpi_processor *pr,
if (disabled_by_idle_boot_param())
return 0;
- cpuidle_unregister_device(&pr->power.dev);
- pr->flags.power_setup_done = 0;
+ if (pr->flags.power) {
+ cpuidle_unregister_device(&pr->power.dev);
+ acpi_processor_registered--;
+ if (acpi_processor_registered == 0)
+ cpuidle_unregister_driver(&acpi_idle_driver);
+ }
+ pr->flags.power_setup_done = 0;
return 0;
}
diff --git a/drivers/cpuidle/cpuidle.c b/drivers/cpuidle/cpuidle.c
index 7127e92..7a57b11 100644
--- a/drivers/cpuidle/cpuidle.c
+++ b/drivers/cpuidle/cpuidle.c
@@ -61,6 +61,7 @@ static int __cpuidle_register_device(struct cpuidle_device *dev);
int cpuidle_idle_call(void)
{
struct cpuidle_device *dev = __this_cpu_read(cpuidle_devices);
+ struct cpuidle_driver *drv = cpuidle_get_driver();
struct cpuidle_state *target_state;
int next_state, entered_state;
@@ -84,18 +85,18 @@ int cpuidle_idle_call(void)
#endif
/* ask the governor for the next state */
- next_state = cpuidle_curr_governor->select(dev);
+ next_state = cpuidle_curr_governor->select(drv, dev);
if (need_resched()) {
local_irq_enable();
return 0;
}
- target_state = &dev->states[next_state];
+ target_state = &drv->states[next_state];
trace_power_start(POWER_CSTATE, next_state, dev->cpu);
trace_cpu_idle(next_state, dev->cpu);
- entered_state = target_state->enter(dev, next_state);
+ entered_state = target_state->enter(dev, drv, next_state);
trace_power_end(dev->cpu);
trace_cpu_idle(PWR_EVENT_EXIT, dev->cpu);
@@ -163,7 +164,8 @@ void cpuidle_resume_and_unlock(void)
EXPORT_SYMBOL_GPL(cpuidle_resume_and_unlock);
#ifdef CONFIG_ARCH_HAS_CPU_RELAX
-static int poll_idle(struct cpuidle_device *dev, int index)
+static int poll_idle(struct cpuidle_device *dev,
+ struct cpuidle_driver *drv, int index)
{
ktime_t t1, t2;
s64 diff;
@@ -183,12 +185,9 @@ static int poll_idle(struct cpuidle_device *dev, int index)
return index;
}
-static void poll_idle_init(struct cpuidle_device *dev)
+static void poll_idle_init(struct cpuidle_driver *drv)
{
- struct cpuidle_state *state = &dev->states[0];
- struct cpuidle_state_usage *state_usage = &dev->states_usage[0];
-
- cpuidle_set_statedata(state_usage, NULL);
+ struct cpuidle_state *state = &drv->states[0];
snprintf(state->name, CPUIDLE_NAME_LEN, "POLL");
snprintf(state->desc, CPUIDLE_DESC_LEN, "CPUIDLE CORE POLL IDLE");
@@ -199,7 +198,7 @@ static void poll_idle_init(struct cpuidle_device *dev)
state->enter = poll_idle;
}
#else
-static void poll_idle_init(struct cpuidle_device *dev) {}
+static void poll_idle_init(struct cpuidle_driver *drv) {}
#endif /* CONFIG_ARCH_HAS_CPU_RELAX */
/**
@@ -226,13 +225,13 @@ int cpuidle_enable_device(struct cpuidle_device *dev)
return ret;
}
- poll_idle_init(dev);
+ poll_idle_init(cpuidle_get_driver());
if ((ret = cpuidle_add_state_sysfs(dev)))
return ret;
if (cpuidle_curr_governor->enable &&
- (ret = cpuidle_curr_governor->enable(dev)))
+ (ret = cpuidle_curr_governor->enable(cpuidle_get_driver(), dev)))
goto fail_sysfs;
for (i = 0; i < dev->state_count; i++) {
@@ -273,7 +272,7 @@ void cpuidle_disable_device(struct cpuidle_device *dev)
dev->enabled = 0;
if (cpuidle_curr_governor->disable)
- cpuidle_curr_governor->disable(dev);
+ cpuidle_curr_governor->disable(cpuidle_get_driver(), dev);
cpuidle_remove_state_sysfs(dev);
enabled_devices--;
@@ -301,26 +300,6 @@ static int __cpuidle_register_device(struct cpuidle_device *dev)
init_completion(&dev->kobj_unregister);
- /*
- * cpuidle driver should set the dev->power_specified bit
- * before registering the device if the driver provides
- * power_usage numbers.
- *
- * For those devices whose ->power_specified is not set,
- * we fill in power_usage with decreasing values as the
- * cpuidle code has an implicit assumption that state Cn
- * uses less power than C(n-1).
- *
- * With CONFIG_ARCH_HAS_CPU_RELAX, C0 is already assigned
- * an power value of -1. So we use -2, -3, etc, for other
- * c-states.
- */
- if (!dev->power_specified) {
- int i;
- for (i = CPUIDLE_DRIVER_STATE_START; i < dev->state_count; i++)
- dev->states[i].power_usage = -1 - i;
- }
-
per_cpu(cpuidle_devices, dev->cpu) = dev;
list_add(&dev->device_list, &cpuidle_detected_devices);
if ((ret = cpuidle_add_sysfs(sys_dev))) {
diff --git a/drivers/cpuidle/driver.c b/drivers/cpuidle/driver.c
index 3f7e3ce..284d7af 100644
--- a/drivers/cpuidle/driver.c
+++ b/drivers/cpuidle/driver.c
@@ -17,6 +17,30 @@
static struct cpuidle_driver *cpuidle_curr_driver;
DEFINE_SPINLOCK(cpuidle_driver_lock);
+static void __cpuidle_register_driver(struct cpuidle_driver *drv)
+{
+ int i;
+ /*
+ * cpuidle driver should set the drv->power_specified bit
+ * before registering if the driver provides
+ * power_usage numbers.
+ *
+ * If power_specified is not set,
+ * we fill in power_usage with decreasing values as the
+ * cpuidle code has an implicit assumption that state Cn
+ * uses less power than C(n-1).
+ *
+ * With CONFIG_ARCH_HAS_CPU_RELAX, C0 is already assigned
+ * an power value of -1. So we use -2, -3, etc, for other
+ * c-states.
+ */
+ if (!drv->power_specified) {
+ for (i = CPUIDLE_DRIVER_STATE_START; i < drv->state_count; i++)
+ drv->states[i].power_usage = -1 - i;
+ }
+}
+
+
/**
* cpuidle_register_driver - registers a driver
* @drv: the driver
@@ -34,6 +58,7 @@ int cpuidle_register_driver(struct cpuidle_driver *drv)
spin_unlock(&cpuidle_driver_lock);
return -EBUSY;
}
+ __cpuidle_register_driver(drv);
cpuidle_curr_driver = drv;
spin_unlock(&cpuidle_driver_lock);
diff --git a/drivers/cpuidle/governors/ladder.c b/drivers/cpuidle/governors/ladder.c
index 6a686a7..ef6b9e4 100644
--- a/drivers/cpuidle/governors/ladder.c
+++ b/drivers/cpuidle/governors/ladder.c
@@ -60,9 +60,11 @@ static inline void ladder_do_selection(struct ladder_device *ldev,
/**
* ladder_select_state - selects the next state to enter
+ * @drv: cpuidle driver
* @dev: the CPU
*/
-static int ladder_select_state(struct cpuidle_device *dev)
+static int ladder_select_state(struct cpuidle_driver *drv,
+ struct cpuidle_device *dev)
{
struct ladder_device *ldev = &__get_cpu_var(ladder_devices);
struct ladder_device_state *last_state;
@@ -77,15 +79,17 @@ static int ladder_select_state(struct cpuidle_device *dev)
last_state = &ldev->states[last_idx];
- if (dev->states[last_idx].flags & CPUIDLE_FLAG_TIME_VALID)
- last_residency = cpuidle_get_last_residency(dev) - dev->states[last_idx].exit_latency;
+ if (drv->states[last_idx].flags & CPUIDLE_FLAG_TIME_VALID) {
+ last_residency = cpuidle_get_last_residency(dev) - \
+ drv->states[last_idx].exit_latency;
+ }
else
last_residency = last_state->threshold.promotion_time + 1;
/* consider promotion */
- if (last_idx < dev->state_count - 1 &&
+ if (last_idx < drv->state_count - 1 &&
last_residency > last_state->threshold.promotion_time &&
- dev->states[last_idx + 1].exit_latency <= latency_req) {
+ drv->states[last_idx + 1].exit_latency <= latency_req) {
last_state->stats.promotion_count++;
last_state->stats.demotion_count = 0;
if (last_state->stats.promotion_count >= last_state->threshold.promotion_count) {
@@ -96,11 +100,11 @@ static int ladder_select_state(struct cpuidle_device *dev)
/* consider demotion */
if (last_idx > CPUIDLE_DRIVER_STATE_START &&
- dev->states[last_idx].exit_latency > latency_req) {
+ drv->states[last_idx].exit_latency > latency_req) {
int i;
for (i = last_idx - 1; i > CPUIDLE_DRIVER_STATE_START; i--) {
- if (dev->states[i].exit_latency <= latency_req)
+ if (drv->states[i].exit_latency <= latency_req)
break;
}
ladder_do_selection(ldev, last_idx, i);
@@ -123,9 +127,11 @@ static int ladder_select_state(struct cpuidle_device *dev)
/**
* ladder_enable_device - setup for the governor
+ * @drv: cpuidle driver
* @dev: the CPU
*/
-static int ladder_enable_device(struct cpuidle_device *dev)
+static int ladder_enable_device(struct cpuidle_driver *drv,
+ struct cpuidle_device *dev)
{
int i;
struct ladder_device *ldev = &per_cpu(ladder_devices, dev->cpu);
@@ -134,8 +140,8 @@ static int ladder_enable_device(struct cpuidle_device *dev)
ldev->last_state_idx = CPUIDLE_DRIVER_STATE_START;
- for (i = 0; i < dev->state_count; i++) {
- state = &dev->states[i];
+ for (i = 0; i < drv->state_count; i++) {
+ state = &drv->states[i];
lstate = &ldev->states[i];
lstate->stats.promotion_count = 0;
@@ -144,7 +150,7 @@ static int ladder_enable_device(struct cpuidle_device *dev)
lstate->threshold.promotion_count = PROMOTION_COUNT;
lstate->threshold.demotion_count = DEMOTION_COUNT;
- if (i < dev->state_count - 1)
+ if (i < drv->state_count - 1)
lstate->threshold.promotion_time = state->exit_latency;
if (i > 0)
lstate->threshold.demotion_time = state->exit_latency;
diff --git a/drivers/cpuidle/governors/menu.c b/drivers/cpuidle/governors/menu.c
index af724e8..bcbe881 100644
--- a/drivers/cpuidle/governors/menu.c
+++ b/drivers/cpuidle/governors/menu.c
@@ -182,7 +182,7 @@ static inline int performance_multiplier(void)
static DEFINE_PER_CPU(struct menu_device, menu_devices);
-static void menu_update(struct cpuidle_device *dev);
+static void menu_update(struct cpuidle_driver *drv, struct cpuidle_device *dev);
/* This implements DIV_ROUND_CLOSEST but avoids 64 bit division */
static u64 div_round64(u64 dividend, u32 divisor)
@@ -228,9 +228,10 @@ static void detect_repeating_patterns(struct menu_device *data)
/**
* menu_select - selects the next idle state to enter
+ * @drv: cpuidle driver containing state data
* @dev: the CPU
*/
-static int menu_select(struct cpuidle_device *dev)
+static int menu_select(struct cpuidle_driver *drv, struct cpuidle_device *dev)
{
struct menu_device *data = &__get_cpu_var(menu_devices);
int latency_req = pm_qos_request(PM_QOS_CPU_DMA_LATENCY);
@@ -240,7 +241,7 @@ static int menu_select(struct cpuidle_device *dev)
struct timespec t;
if (data->needs_update) {
- menu_update(dev);
+ menu_update(drv, dev);
data->needs_update = 0;
}
@@ -285,8 +286,8 @@ static int menu_select(struct cpuidle_device *dev)
* Find the idle state with the lowest power while satisfying
* our constraints.
*/
- for (i = CPUIDLE_DRIVER_STATE_START; i < dev->state_count; i++) {
- struct cpuidle_state *s = &dev->states[i];
+ for (i = CPUIDLE_DRIVER_STATE_START; i < drv->state_count; i++) {
+ struct cpuidle_state *s = &drv->states[i];
if (s->target_residency > data->predicted_us)
continue;
@@ -323,14 +324,15 @@ static void menu_reflect(struct cpuidle_device *dev, int index)
/**
* menu_update - attempts to guess what happened after entry
+ * @drv: cpuidle driver containing state data
* @dev: the CPU
*/
-static void menu_update(struct cpuidle_device *dev)
+static void menu_update(struct cpuidle_driver *drv, struct cpuidle_device *dev)
{
struct menu_device *data = &__get_cpu_var(menu_devices);
int last_idx = data->last_state_idx;
unsigned int last_idle_us = cpuidle_get_last_residency(dev);
- struct cpuidle_state *target = &dev->states[last_idx];
+ struct cpuidle_state *target = &drv->states[last_idx];
unsigned int measured_us;
u64 new_factor;
@@ -384,9 +386,11 @@ static void menu_update(struct cpuidle_device *dev)
/**
* menu_enable_device - scans a CPU's states and does setup
+ * @drv: cpuidle driver
* @dev: the CPU
*/
-static int menu_enable_device(struct cpuidle_device *dev)
+static int menu_enable_device(struct cpuidle_driver *drv,
+ struct cpuidle_device *dev)
{
struct menu_device *data = &per_cpu(menu_devices, dev->cpu);
diff --git a/drivers/cpuidle/sysfs.c b/drivers/cpuidle/sysfs.c
index 8a1ace1..1e756e1 100644
--- a/drivers/cpuidle/sysfs.c
+++ b/drivers/cpuidle/sysfs.c
@@ -322,13 +322,14 @@ int cpuidle_add_state_sysfs(struct cpuidle_device *device)
{
int i, ret = -ENOMEM;
struct cpuidle_state_kobj *kobj;
+ struct cpuidle_driver *drv = cpuidle_get_driver();
/* state statistics */
for (i = 0; i < device->state_count; i++) {
kobj = kzalloc(sizeof(struct cpuidle_state_kobj), GFP_KERNEL);
if (!kobj)
goto error_state;
- kobj->state = &device->states[i];
+ kobj->state = &drv->states[i];
kobj->state_usage = &device->states_usage[i];
init_completion(&kobj->kobj_unregister);
diff --git a/drivers/idle/intel_idle.c b/drivers/idle/intel_idle.c
index 3aa8d4c..5be9d59 100644
--- a/drivers/idle/intel_idle.c
+++ b/drivers/idle/intel_idle.c
@@ -81,7 +81,8 @@ static unsigned int mwait_substates;
static unsigned int lapic_timer_reliable_states = (1 << 1); /* Default to only C1 */
static struct cpuidle_device __percpu *intel_idle_cpuidle_devices;
-static int intel_idle(struct cpuidle_device *dev, int index);
+static int intel_idle(struct cpuidle_device *dev,
+ struct cpuidle_driver *drv, int index);
static struct cpuidle_state *cpuidle_state_table;
@@ -227,13 +228,15 @@ static int get_driver_data(int cstate)
/**
* intel_idle
* @dev: cpuidle_device
+ * @drv: cpuidle driver
* @index: index of cpuidle state
*
*/
-static int intel_idle(struct cpuidle_device *dev, int index)
+static int intel_idle(struct cpuidle_device *dev,
+ struct cpuidle_driver *drv, int index)
{
unsigned long ecx = 1; /* break on interrupt flag */
- struct cpuidle_state *state = &dev->states[index];
+ struct cpuidle_state *state = &drv->states[index];
struct cpuidle_state_usage *state_usage = &dev->states_usage[index];
unsigned long eax = (unsigned long)cpuidle_get_statedata(state_usage);
unsigned int cstate;
@@ -420,6 +423,60 @@ static void intel_idle_cpuidle_devices_uninit(void)
return;
}
/*
+ * intel_idle_cpuidle_driver_init()
+ * allocate, initialize cpuidle_states
+ */
+static int intel_idle_cpuidle_driver_init(void)
+{
+ int cstate;
+ struct cpuidle_driver *drv = &intel_idle_driver;
+
+ drv->state_count = 1;
+
+ for (cstate = 1; cstate < MWAIT_MAX_NUM_CSTATES; ++cstate) {
+ int num_substates;
+
+ if (cstate > max_cstate) {
+ printk(PREFIX "max_cstate %d reached\n",
+ max_cstate);
+ break;
+ }
+
+ /* does the state exist in CPUID.MWAIT? */
+ num_substates = (mwait_substates >> ((cstate) * 4))
+ & MWAIT_SUBSTATE_MASK;
+ if (num_substates == 0)
+ continue;
+ /* is the state not enabled? */
+ if (cpuidle_state_table[cstate].enter == NULL) {
+ /* does the driver not know about the state? */
+ if (*cpuidle_state_table[cstate].name == '\0')
+ pr_debug(PREFIX "unaware of model 0x%x"
+ " MWAIT %d please"
+ " contact lenb at kernel.org",
+ boot_cpu_data.x86_model, cstate);
+ continue;
+ }
+
+ if ((cstate > 2) &&
+ !boot_cpu_has(X86_FEATURE_NONSTOP_TSC))
+ mark_tsc_unstable("TSC halts in idle"
+ " states deeper than C2");
+
+ drv->states[drv->state_count] = /* structure copy */
+ cpuidle_state_table[cstate];
+
+ drv->state_count += 1;
+ }
+
+ if (auto_demotion_disable_flags)
+ smp_call_function(auto_demotion_disable, NULL, 1);
+
+ return 0;
+}
+
+
+/*
* intel_idle_cpuidle_devices_init()
* allocate, initialize, register cpuidle_devices
*/
@@ -453,23 +510,9 @@ static int intel_idle_cpuidle_devices_init(void)
continue;
/* is the state not enabled? */
if (cpuidle_state_table[cstate].enter == NULL) {
- /* does the driver not know about the state? */
- if (*cpuidle_state_table[cstate].name == '\0')
- pr_debug(PREFIX "unaware of model 0x%x"
- " MWAIT %d please"
- " contact lenb at kernel.org",
- boot_cpu_data.x86_model, cstate);
continue;
}
- if ((cstate > 2) &&
- !boot_cpu_has(X86_FEATURE_NONSTOP_TSC))
- mark_tsc_unstable("TSC halts in idle"
- " states deeper than C2");
-
- dev->states[dev->state_count] = /* structure copy */
- cpuidle_state_table[cstate];
-
dev->states_usage[dev->state_count].driver_data =
(void *)get_driver_data(cstate);
@@ -484,8 +527,6 @@ static int intel_idle_cpuidle_devices_init(void)
return -EIO;
}
}
- if (auto_demotion_disable_flags)
- smp_call_function(auto_demotion_disable, NULL, 1);
return 0;
}
@@ -503,6 +544,7 @@ static int __init intel_idle_init(void)
if (retval)
return retval;
+ intel_idle_cpuidle_driver_init();
retval = cpuidle_register_driver(&intel_idle_driver);
if (retval) {
printk(KERN_DEBUG PREFIX "intel_idle yielding to %s",
diff --git a/include/acpi/processor.h b/include/acpi/processor.h
index 67055f1..610f6fb 100644
--- a/include/acpi/processor.h
+++ b/include/acpi/processor.h
@@ -329,6 +329,7 @@ extern void acpi_processor_throttling_init(void);
int acpi_processor_power_init(struct acpi_processor *pr,
struct acpi_device *device);
int acpi_processor_cst_has_changed(struct acpi_processor *pr);
+int acpi_processor_hotplug(struct acpi_processor *pr);
int acpi_processor_power_exit(struct acpi_processor *pr,
struct acpi_device *device);
int acpi_processor_suspend(struct acpi_device * device, pm_message_t state);
diff --git a/include/linux/cpuidle.h b/include/linux/cpuidle.h
index 0156540..c904188 100644
--- a/include/linux/cpuidle.h
+++ b/include/linux/cpuidle.h
@@ -22,6 +22,7 @@
#define CPUIDLE_DESC_LEN 32
struct cpuidle_device;
+struct cpuidle_driver;
/****************************
@@ -45,6 +46,7 @@ struct cpuidle_state {
unsigned int target_residency; /* in US */
int (*enter) (struct cpuidle_device *dev,
+ struct cpuidle_driver *drv,
int index);
};
@@ -83,12 +85,10 @@ struct cpuidle_state_kobj {
struct cpuidle_device {
unsigned int registered:1;
unsigned int enabled:1;
- unsigned int power_specified:1;
unsigned int cpu;
int last_residency;
int state_count;
- struct cpuidle_state states[CPUIDLE_STATE_MAX];
struct cpuidle_state_usage states_usage[CPUIDLE_STATE_MAX];
struct cpuidle_state_kobj *kobjs[CPUIDLE_STATE_MAX];
@@ -96,7 +96,6 @@ struct cpuidle_device {
struct kobject kobj;
struct completion kobj_unregister;
void *governor_data;
- int safe_state_index;
};
DECLARE_PER_CPU(struct cpuidle_device *, cpuidle_devices);
@@ -120,6 +119,11 @@ static inline int cpuidle_get_last_residency(struct cpuidle_device *dev)
struct cpuidle_driver {
char name[CPUIDLE_NAME_LEN];
struct module *owner;
+
+ unsigned int power_specified:1;
+ struct cpuidle_state states[CPUIDLE_STATE_MAX];
+ int state_count;
+ int safe_state_index;
};
#ifdef CONFIG_CPU_IDLE
@@ -166,10 +170,13 @@ struct cpuidle_governor {
struct list_head governor_list;
unsigned int rating;
- int (*enable) (struct cpuidle_device *dev);
- void (*disable) (struct cpuidle_device *dev);
+ int (*enable) (struct cpuidle_driver *drv,
+ struct cpuidle_device *dev);
+ void (*disable) (struct cpuidle_driver *drv,
+ struct cpuidle_device *dev);
- int (*select) (struct cpuidle_device *dev);
+ int (*select) (struct cpuidle_driver *drv,
+ struct cpuidle_device *dev);
void (*reflect) (struct cpuidle_device *dev, int index);
struct module *owner;
^ permalink raw reply related
* [RFC PATCH V6 3/4] cpuidle: Split cpuidle_state structure and move per-cpu statistics fields
From: Deepthi Dharwar @ 2011-09-22 8:32 UTC (permalink / raw)
To: linux-arm-kernel
In-Reply-To: <20110922082840.10520.85895.stgit@localhost6.localdomain6>
This is the first step towards global registration of cpuidle
states. The statistics used primarily by the governor are per-cpu
and have to be split from rest of the fields inside cpuidle_state,
which would be made global i.e. single copy. The driver_data field
is also per-cpu and moved.
Signed-off-by: Deepthi Dharwar <deepthi@linux.vnet.ibm.com>
Signed-off-by: Trinabh Gupta <g.trinabh@gmail.com>
---
arch/arm/mach-davinci/cpuidle.c | 5 ++--
arch/arm/mach-omap2/cpuidle34xx.c | 13 ++++++----
drivers/acpi/processor_idle.c | 25 ++++++++++----------
drivers/cpuidle/cpuidle.c | 11 +++++----
drivers/cpuidle/sysfs.c | 19 ++++++++++-----
drivers/idle/intel_idle.c | 46 +++++++++++++++++++++++++++----------
include/linux/cpuidle.h | 25 ++++++++++++--------
7 files changed, 90 insertions(+), 54 deletions(-)
diff --git a/arch/arm/mach-davinci/cpuidle.c b/arch/arm/mach-davinci/cpuidle.c
index ca8582a..f2d2f34 100644
--- a/arch/arm/mach-davinci/cpuidle.c
+++ b/arch/arm/mach-davinci/cpuidle.c
@@ -80,7 +80,8 @@ static struct davinci_ops davinci_states[DAVINCI_CPUIDLE_MAX_STATES] = {
static int davinci_enter_idle(struct cpuidle_device *dev,
int index)
{
- struct davinci_ops *ops = cpuidle_get_statedata(&dev->states[index]);
+ struct cpuidle_state_usage *state_usage = &dev->states_usage[index];
+ struct davinci_ops *ops = cpuidle_get_statedata(state_usage);
struct timeval before, after;
int idle_time;
@@ -142,7 +143,7 @@ static int __init davinci_cpuidle_probe(struct platform_device *pdev)
strcpy(device->states[1].desc, "WFI and DDR Self Refresh");
if (pdata->ddr2_pdown)
davinci_states[1].flags |= DAVINCI_CPUIDLE_FLAGS_DDR2_PWDN;
- cpuidle_set_statedata(&device->states[1], &davinci_states[1]);
+ cpuidle_set_statedata(&device->states_usage[1], &davinci_states[1]);
device->state_count = DAVINCI_CPUIDLE_MAX_STATES;
diff --git a/arch/arm/mach-omap2/cpuidle34xx.c b/arch/arm/mach-omap2/cpuidle34xx.c
index 58425c7..d3fce7b 100644
--- a/arch/arm/mach-omap2/cpuidle34xx.c
+++ b/arch/arm/mach-omap2/cpuidle34xx.c
@@ -97,7 +97,7 @@ static int omap3_enter_idle(struct cpuidle_device *dev,
int index)
{
struct omap3_idle_statedata *cx =
- cpuidle_get_statedata(&dev->states[index]);
+ cpuidle_get_statedata(&dev->states_usage[index]);
struct timespec ts_preidle, ts_postidle, ts_idle;
u32 mpu_state = cx->mpu_state, core_state = cx->core_state;
int idle_time;
@@ -160,8 +160,9 @@ return_sleep_time:
static int next_valid_state(struct cpuidle_device *dev,
int index)
{
+ struct cpuidle_state_usage *curr_usage = &dev->states_usage[index];
struct cpuidle_state *curr = &dev->states[index];
- struct omap3_idle_statedata *cx = cpuidle_get_statedata(curr);
+ struct omap3_idle_statedata *cx = cpuidle_get_statedata(curr_usage);
u32 mpu_deepest_state = PWRDM_POWER_RET;
u32 core_deepest_state = PWRDM_POWER_RET;
int next_index = -1;
@@ -202,7 +203,7 @@ static int next_valid_state(struct cpuidle_device *dev,
*/
idx--;
for (; idx >= 0; idx--) {
- cx = cpuidle_get_statedata(&dev->states[idx]);
+ cx = cpuidle_get_statedata(&dev->states_usage[idx]);
if ((cx->valid) &&
(cx->mpu_state >= mpu_deepest_state) &&
(cx->core_state >= core_deepest_state)) {
@@ -231,7 +232,6 @@ static int next_valid_state(struct cpuidle_device *dev,
static int omap3_enter_idle_bm(struct cpuidle_device *dev,
int index)
{
- struct cpuidle_state *state = &dev->states[index];
int new_state_idx;
u32 core_next_state, per_next_state = 0, per_saved_state = 0, cam_state;
struct omap3_idle_statedata *cx;
@@ -264,7 +264,7 @@ static int omap3_enter_idle_bm(struct cpuidle_device *dev,
* Prevent PER off if CORE is not in retention or off as this
* would disable PER wakeups completely.
*/
- cx = cpuidle_get_statedata(state);
+ cx = cpuidle_get_statedata(&dev->states_usage[index]);
core_next_state = cx->core_state;
per_next_state = per_saved_state = pwrdm_read_next_pwrst(per_pd);
if ((per_next_state == PWRDM_POWER_OFF) &&
@@ -318,6 +318,7 @@ static inline struct omap3_idle_statedata *_fill_cstate(
{
struct omap3_idle_statedata *cx = &omap3_idle_data[idx];
struct cpuidle_state *state = &dev->states[idx];
+ struct cpuidle_state_usage *state_usage = &dev->states_usage[idx];
state->exit_latency = cpuidle_params_table[idx].exit_latency;
state->target_residency = cpuidle_params_table[idx].target_residency;
@@ -326,7 +327,7 @@ static inline struct omap3_idle_statedata *_fill_cstate(
cx->valid = cpuidle_params_table[idx].valid;
sprintf(state->name, "C%d", idx + 1);
strncpy(state->desc, descr, CPUIDLE_DESC_LEN);
- cpuidle_set_statedata(state, cx);
+ cpuidle_set_statedata(state_usage, cx);
return cx;
}
diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c
index 9cd08ce..b98c752 100644
--- a/drivers/acpi/processor_idle.c
+++ b/drivers/acpi/processor_idle.c
@@ -745,14 +745,13 @@ static inline void acpi_idle_do_entry(struct acpi_processor_cx *cx)
*
* This is equivalent to the HALT instruction.
*/
-static int acpi_idle_enter_c1(struct cpuidle_device *dev,
- int index)
+static int acpi_idle_enter_c1(struct cpuidle_device *dev, int index)
{
ktime_t kt1, kt2;
s64 idle_time;
struct acpi_processor *pr;
- struct cpuidle_state *state = &dev->states[index];
- struct acpi_processor_cx *cx = cpuidle_get_statedata(state);
+ struct cpuidle_state_usage *state_usage = &dev->states_usage[index];
+ struct acpi_processor_cx *cx = cpuidle_get_statedata(state_usage);
pr = __this_cpu_read(processors);
dev->last_residency = 0;
@@ -790,12 +789,11 @@ static int acpi_idle_enter_c1(struct cpuidle_device *dev,
* @dev: the target CPU
* @index: the index of suggested state
*/
-static int acpi_idle_enter_simple(struct cpuidle_device *dev,
- int index)
+static int acpi_idle_enter_simple(struct cpuidle_device *dev, int index)
{
struct acpi_processor *pr;
- struct cpuidle_state *state = &dev->states[index];
- struct acpi_processor_cx *cx = cpuidle_get_statedata(state);
+ struct cpuidle_state_usage *state_usage = &dev->states_usage[index];
+ struct acpi_processor_cx *cx = cpuidle_get_statedata(state_usage);
ktime_t kt1, kt2;
s64 idle_time_ns;
s64 idle_time;
@@ -875,12 +873,11 @@ static DEFINE_SPINLOCK(c3_lock);
*
* If BM is detected, the deepest non-C3 idle state is entered instead.
*/
-static int acpi_idle_enter_bm(struct cpuidle_device *dev,
- int index)
+static int acpi_idle_enter_bm(struct cpuidle_device *dev, int index)
{
struct acpi_processor *pr;
- struct cpuidle_state *state = &dev->states[index];
- struct acpi_processor_cx *cx = cpuidle_get_statedata(state);
+ struct cpuidle_state_usage *state_usage = &dev->states_usage[index];
+ struct acpi_processor_cx *cx = cpuidle_get_statedata(state_usage);
ktime_t kt1, kt2;
s64 idle_time_ns;
s64 idle_time;
@@ -1004,6 +1001,7 @@ static int acpi_processor_setup_cpuidle(struct acpi_processor *pr)
int i, count = CPUIDLE_DRIVER_STATE_START;
struct acpi_processor_cx *cx;
struct cpuidle_state *state;
+ struct cpuidle_state_usage *state_usage;
struct cpuidle_device *dev = &pr->power.dev;
if (!pr->flags.power_setup_done)
@@ -1026,6 +1024,7 @@ static int acpi_processor_setup_cpuidle(struct acpi_processor *pr)
for (i = 1; i < ACPI_PROCESSOR_MAX_POWER && i <= max_cstate; i++) {
cx = &pr->power.states[i];
state = &dev->states[count];
+ state_usage = &dev->states_usage[count];
if (!cx->valid)
continue;
@@ -1036,7 +1035,7 @@ static int acpi_processor_setup_cpuidle(struct acpi_processor *pr)
!(acpi_gbl_FADT.flags & ACPI_FADT_C2_MP_SUPPORTED))
continue;
#endif
- cpuidle_set_statedata(state, cx);
+ cpuidle_set_statedata(state_usage, cx);
snprintf(state->name, CPUIDLE_NAME_LEN, "C%d", i);
strncpy(state->desc, cx->desc, CPUIDLE_DESC_LEN);
diff --git a/drivers/cpuidle/cpuidle.c b/drivers/cpuidle/cpuidle.c
index f66bcf9..7127e92 100644
--- a/drivers/cpuidle/cpuidle.c
+++ b/drivers/cpuidle/cpuidle.c
@@ -105,9 +105,9 @@ int cpuidle_idle_call(void)
/* This can be moved to within driver enter routine
* but that results in multiple copies of same code.
*/
- dev->states[entered_state].time +=
+ dev->states_usage[entered_state].time +=
(unsigned long long)dev->last_residency;
- dev->states[entered_state].usage++;
+ dev->states_usage[entered_state].usage++;
}
/* give the governor an opportunity to reflect on the outcome */
@@ -186,8 +186,9 @@ static int poll_idle(struct cpuidle_device *dev, int index)
static void poll_idle_init(struct cpuidle_device *dev)
{
struct cpuidle_state *state = &dev->states[0];
+ struct cpuidle_state_usage *state_usage = &dev->states_usage[0];
- cpuidle_set_statedata(state, NULL);
+ cpuidle_set_statedata(state_usage, NULL);
snprintf(state->name, CPUIDLE_NAME_LEN, "POLL");
snprintf(state->desc, CPUIDLE_DESC_LEN, "CPUIDLE CORE POLL IDLE");
@@ -235,8 +236,8 @@ int cpuidle_enable_device(struct cpuidle_device *dev)
goto fail_sysfs;
for (i = 0; i < dev->state_count; i++) {
- dev->states[i].usage = 0;
- dev->states[i].time = 0;
+ dev->states_usage[i].usage = 0;
+ dev->states_usage[i].time = 0;
}
dev->last_residency = 0;
diff --git a/drivers/cpuidle/sysfs.c b/drivers/cpuidle/sysfs.c
index be7917ec..8a1ace1 100644
--- a/drivers/cpuidle/sysfs.c
+++ b/drivers/cpuidle/sysfs.c
@@ -216,7 +216,8 @@ static struct kobj_type ktype_cpuidle = {
struct cpuidle_state_attr {
struct attribute attr;
- ssize_t (*show)(struct cpuidle_state *, char *);
+ ssize_t (*show)(struct cpuidle_state *, \
+ struct cpuidle_state_usage *, char *);
ssize_t (*store)(struct cpuidle_state *, const char *, size_t);
};
@@ -224,19 +225,22 @@ struct cpuidle_state_attr {
static struct cpuidle_state_attr attr_##_name = __ATTR(_name, 0444, show, NULL)
#define define_show_state_function(_name) \
-static ssize_t show_state_##_name(struct cpuidle_state *state, char *buf) \
+static ssize_t show_state_##_name(struct cpuidle_state *state, \
+ struct cpuidle_state_usage *state_usage, char *buf) \
{ \
return sprintf(buf, "%u\n", state->_name);\
}
#define define_show_state_ull_function(_name) \
-static ssize_t show_state_##_name(struct cpuidle_state *state, char *buf) \
+static ssize_t show_state_##_name(struct cpuidle_state *state, \
+ struct cpuidle_state_usage *state_usage, char *buf) \
{ \
- return sprintf(buf, "%llu\n", state->_name);\
+ return sprintf(buf, "%llu\n", state_usage->_name);\
}
#define define_show_state_str_function(_name) \
-static ssize_t show_state_##_name(struct cpuidle_state *state, char *buf) \
+static ssize_t show_state_##_name(struct cpuidle_state *state, \
+ struct cpuidle_state_usage *state_usage, char *buf) \
{ \
if (state->_name[0] == '\0')\
return sprintf(buf, "<null>\n");\
@@ -269,16 +273,18 @@ static struct attribute *cpuidle_state_default_attrs[] = {
#define kobj_to_state_obj(k) container_of(k, struct cpuidle_state_kobj, kobj)
#define kobj_to_state(k) (kobj_to_state_obj(k)->state)
+#define kobj_to_state_usage(k) (kobj_to_state_obj(k)->state_usage)
#define attr_to_stateattr(a) container_of(a, struct cpuidle_state_attr, attr)
static ssize_t cpuidle_state_show(struct kobject * kobj,
struct attribute * attr ,char * buf)
{
int ret = -EIO;
struct cpuidle_state *state = kobj_to_state(kobj);
+ struct cpuidle_state_usage *state_usage = kobj_to_state_usage(kobj);
struct cpuidle_state_attr * cattr = attr_to_stateattr(attr);
if (cattr->show)
- ret = cattr->show(state, buf);
+ ret = cattr->show(state, state_usage, buf);
return ret;
}
@@ -323,6 +329,7 @@ int cpuidle_add_state_sysfs(struct cpuidle_device *device)
if (!kobj)
goto error_state;
kobj->state = &device->states[i];
+ kobj->state_usage = &device->states_usage[i];
init_completion(&kobj->kobj_unregister);
ret = kobject_init_and_add(&kobj->kobj, &ktype_state_cpuidle, &device->kobj,
diff --git a/drivers/idle/intel_idle.c b/drivers/idle/intel_idle.c
index a1c888d..3aa8d4c 100644
--- a/drivers/idle/intel_idle.c
+++ b/drivers/idle/intel_idle.c
@@ -109,7 +109,6 @@ static struct cpuidle_state nehalem_cstates[MWAIT_MAX_NUM_CSTATES] = {
{ /* MWAIT C1 */
.name = "C1-NHM",
.desc = "MWAIT 0x00",
- .driver_data = (void *) 0x00,
.flags = CPUIDLE_FLAG_TIME_VALID,
.exit_latency = 3,
.target_residency = 6,
@@ -117,7 +116,6 @@ static struct cpuidle_state nehalem_cstates[MWAIT_MAX_NUM_CSTATES] = {
{ /* MWAIT C2 */
.name = "C3-NHM",
.desc = "MWAIT 0x10",
- .driver_data = (void *) 0x10,
.flags = CPUIDLE_FLAG_TIME_VALID | CPUIDLE_FLAG_TLB_FLUSHED,
.exit_latency = 20,
.target_residency = 80,
@@ -125,7 +123,6 @@ static struct cpuidle_state nehalem_cstates[MWAIT_MAX_NUM_CSTATES] = {
{ /* MWAIT C3 */
.name = "C6-NHM",
.desc = "MWAIT 0x20",
- .driver_data = (void *) 0x20,
.flags = CPUIDLE_FLAG_TIME_VALID | CPUIDLE_FLAG_TLB_FLUSHED,
.exit_latency = 200,
.target_residency = 800,
@@ -137,7 +134,6 @@ static struct cpuidle_state snb_cstates[MWAIT_MAX_NUM_CSTATES] = {
{ /* MWAIT C1 */
.name = "C1-SNB",
.desc = "MWAIT 0x00",
- .driver_data = (void *) 0x00,
.flags = CPUIDLE_FLAG_TIME_VALID,
.exit_latency = 1,
.target_residency = 1,
@@ -145,7 +141,6 @@ static struct cpuidle_state snb_cstates[MWAIT_MAX_NUM_CSTATES] = {
{ /* MWAIT C2 */
.name = "C3-SNB",
.desc = "MWAIT 0x10",
- .driver_data = (void *) 0x10,
.flags = CPUIDLE_FLAG_TIME_VALID | CPUIDLE_FLAG_TLB_FLUSHED,
.exit_latency = 80,
.target_residency = 211,
@@ -153,7 +148,6 @@ static struct cpuidle_state snb_cstates[MWAIT_MAX_NUM_CSTATES] = {
{ /* MWAIT C3 */
.name = "C6-SNB",
.desc = "MWAIT 0x20",
- .driver_data = (void *) 0x20,
.flags = CPUIDLE_FLAG_TIME_VALID | CPUIDLE_FLAG_TLB_FLUSHED,
.exit_latency = 104,
.target_residency = 345,
@@ -161,7 +155,6 @@ static struct cpuidle_state snb_cstates[MWAIT_MAX_NUM_CSTATES] = {
{ /* MWAIT C4 */
.name = "C7-SNB",
.desc = "MWAIT 0x30",
- .driver_data = (void *) 0x30,
.flags = CPUIDLE_FLAG_TIME_VALID | CPUIDLE_FLAG_TLB_FLUSHED,
.exit_latency = 109,
.target_residency = 345,
@@ -173,7 +166,6 @@ static struct cpuidle_state atom_cstates[MWAIT_MAX_NUM_CSTATES] = {
{ /* MWAIT C1 */
.name = "C1-ATM",
.desc = "MWAIT 0x00",
- .driver_data = (void *) 0x00,
.flags = CPUIDLE_FLAG_TIME_VALID,
.exit_latency = 1,
.target_residency = 4,
@@ -181,7 +173,6 @@ static struct cpuidle_state atom_cstates[MWAIT_MAX_NUM_CSTATES] = {
{ /* MWAIT C2 */
.name = "C2-ATM",
.desc = "MWAIT 0x10",
- .driver_data = (void *) 0x10,
.flags = CPUIDLE_FLAG_TIME_VALID,
.exit_latency = 20,
.target_residency = 80,
@@ -190,7 +181,6 @@ static struct cpuidle_state atom_cstates[MWAIT_MAX_NUM_CSTATES] = {
{ /* MWAIT C4 */
.name = "C4-ATM",
.desc = "MWAIT 0x30",
- .driver_data = (void *) 0x30,
.flags = CPUIDLE_FLAG_TIME_VALID | CPUIDLE_FLAG_TLB_FLUSHED,
.exit_latency = 100,
.target_residency = 400,
@@ -199,13 +189,41 @@ static struct cpuidle_state atom_cstates[MWAIT_MAX_NUM_CSTATES] = {
{ /* MWAIT C6 */
.name = "C6-ATM",
.desc = "MWAIT 0x52",
- .driver_data = (void *) 0x52,
.flags = CPUIDLE_FLAG_TIME_VALID | CPUIDLE_FLAG_TLB_FLUSHED,
.exit_latency = 140,
.target_residency = 560,
.enter = &intel_idle },
};
+static int get_driver_data(int cstate)
+{
+ int driver_data;
+ switch (cstate) {
+
+ case 1: /* MWAIT C1 */
+ driver_data = 0x00;
+ break;
+ case 2: /* MWAIT C2 */
+ driver_data = 0x10;
+ break;
+ case 3: /* MWAIT C3 */
+ driver_data = 0x20;
+ break;
+ case 4: /* MWAIT C4 */
+ driver_data = 0x30;
+ break;
+ case 5: /* MWAIT C5 */
+ driver_data = 0x40;
+ break;
+ case 6: /* MWAIT C6 */
+ driver_data = 0x52;
+ break;
+ default:
+ driver_data = 0x00;
+ }
+ return driver_data;
+}
+
/**
* intel_idle
* @dev: cpuidle_device
@@ -216,7 +234,8 @@ static int intel_idle(struct cpuidle_device *dev, int index)
{
unsigned long ecx = 1; /* break on interrupt flag */
struct cpuidle_state *state = &dev->states[index];
- unsigned long eax = (unsigned long)cpuidle_get_statedata(state);
+ struct cpuidle_state_usage *state_usage = &dev->states_usage[index];
+ unsigned long eax = (unsigned long)cpuidle_get_statedata(state_usage);
unsigned int cstate;
ktime_t kt_before, kt_after;
s64 usec_delta;
@@ -451,6 +470,9 @@ static int intel_idle_cpuidle_devices_init(void)
dev->states[dev->state_count] = /* structure copy */
cpuidle_state_table[cstate];
+ dev->states_usage[dev->state_count].driver_data =
+ (void *)get_driver_data(cstate);
+
dev->state_count += 1;
}
diff --git a/include/linux/cpuidle.h b/include/linux/cpuidle.h
index c6d85cf..0156540 100644
--- a/include/linux/cpuidle.h
+++ b/include/linux/cpuidle.h
@@ -28,19 +28,22 @@ struct cpuidle_device;
* CPUIDLE DEVICE INTERFACE *
****************************/
+struct cpuidle_state_usage {
+ void *driver_data;
+
+ unsigned long long usage;
+ unsigned long long time; /* in US */
+};
+
struct cpuidle_state {
char name[CPUIDLE_NAME_LEN];
char desc[CPUIDLE_DESC_LEN];
- void *driver_data;
unsigned int flags;
unsigned int exit_latency; /* in US */
unsigned int power_usage; /* in mW */
unsigned int target_residency; /* in US */
- unsigned long long usage;
- unsigned long long time; /* in US */
-
int (*enter) (struct cpuidle_device *dev,
int index);
};
@@ -52,26 +55,27 @@ struct cpuidle_state {
/**
* cpuidle_get_statedata - retrieves private driver state data
- * @state: the state
+ * @st_usage: the state usage statistics
*/
-static inline void * cpuidle_get_statedata(struct cpuidle_state *state)
+static inline void *cpuidle_get_statedata(struct cpuidle_state_usage *st_usage)
{
- return state->driver_data;
+ return st_usage->driver_data;
}
/**
* cpuidle_set_statedata - stores private driver state data
- * @state: the state
+ * @st_usage: the state usage statistics
* @data: the private data
*/
static inline void
-cpuidle_set_statedata(struct cpuidle_state *state, void *data)
+cpuidle_set_statedata(struct cpuidle_state_usage *st_usage, void *data)
{
- state->driver_data = data;
+ st_usage->driver_data = data;
}
struct cpuidle_state_kobj {
struct cpuidle_state *state;
+ struct cpuidle_state_usage *state_usage;
struct completion kobj_unregister;
struct kobject kobj;
};
@@ -85,6 +89,7 @@ struct cpuidle_device {
int last_residency;
int state_count;
struct cpuidle_state states[CPUIDLE_STATE_MAX];
+ struct cpuidle_state_usage states_usage[CPUIDLE_STATE_MAX];
struct cpuidle_state_kobj *kobjs[CPUIDLE_STATE_MAX];
struct list_head device_list;
^ permalink raw reply related
* [RFC PATCH V6 2/4] cpuidle: Remove CPUIDLE_FLAG_IGNORE and dev->prepare()
From: Deepthi Dharwar @ 2011-09-22 8:31 UTC (permalink / raw)
To: linux-arm-kernel
In-Reply-To: <20110922082840.10520.85895.stgit@localhost6.localdomain6>
The cpuidle_device->prepare() mechanism causes updates to the
cpuidle_state[].flags, setting and clearing CPUIDLE_FLAG_IGNORE
to tell the governor not to chose a state on a per-cpu basis at
run-time. State demotion is now handled by the driver and it returns
the actual state entered. Hence, this mechanism is not required.
Also this removes per-cpu flags from cpuidle_state enabling
it to be made global.
Ref: https://lkml.org/lkml/2011/3/25/52
Signed-off-by: Deepthi Dharwar <deepthi@linux.vnet.ibm>
Signed-off-by: Trinabh Gupta <g.trinabh@gmail.com>
---
drivers/cpuidle/cpuidle.c | 10 ----------
drivers/cpuidle/governors/menu.c | 2 --
include/linux/cpuidle.h | 3 ---
3 files changed, 0 insertions(+), 15 deletions(-)
diff --git a/drivers/cpuidle/cpuidle.c b/drivers/cpuidle/cpuidle.c
index 88bd121..f66bcf9 100644
--- a/drivers/cpuidle/cpuidle.c
+++ b/drivers/cpuidle/cpuidle.c
@@ -83,16 +83,6 @@ int cpuidle_idle_call(void)
hrtimer_peek_ahead_timers();
#endif
- /*
- * Call the device's prepare function before calling the
- * governor's select function. ->prepare gives the device's
- * cpuidle driver a chance to update any dynamic information
- * of its cpuidle states for the current idle period, e.g.
- * state availability, latencies, residencies, etc.
- */
- if (dev->prepare)
- dev->prepare(dev);
-
/* ask the governor for the next state */
next_state = cpuidle_curr_governor->select(dev);
if (need_resched()) {
diff --git a/drivers/cpuidle/governors/menu.c b/drivers/cpuidle/governors/menu.c
index e4b200c..af724e8 100644
--- a/drivers/cpuidle/governors/menu.c
+++ b/drivers/cpuidle/governors/menu.c
@@ -288,8 +288,6 @@ static int menu_select(struct cpuidle_device *dev)
for (i = CPUIDLE_DRIVER_STATE_START; i < dev->state_count; i++) {
struct cpuidle_state *s = &dev->states[i];
- if (s->flags & CPUIDLE_FLAG_IGNORE)
- continue;
if (s->target_residency > data->predicted_us)
continue;
if (s->exit_latency > latency_req)
diff --git a/include/linux/cpuidle.h b/include/linux/cpuidle.h
index 8da811b..c6d85cf 100644
--- a/include/linux/cpuidle.h
+++ b/include/linux/cpuidle.h
@@ -47,7 +47,6 @@ struct cpuidle_state {
/* Idle State Flags */
#define CPUIDLE_FLAG_TIME_VALID (0x01) /* is residency time measurable? */
-#define CPUIDLE_FLAG_IGNORE (0x100) /* ignore during this idle period */
#define CPUIDLE_DRIVER_FLAGS_MASK (0xFFFF0000)
@@ -93,8 +92,6 @@ struct cpuidle_device {
struct completion kobj_unregister;
void *governor_data;
int safe_state_index;
-
- int (*prepare) (struct cpuidle_device *dev);
};
DECLARE_PER_CPU(struct cpuidle_device *, cpuidle_devices);
^ permalink raw reply related
* [RFC PATCH V6 1/4] cpuidle: Move dev->last_residency update to driver enter routine; remove dev->last_state
From: Deepthi Dharwar @ 2011-09-22 8:30 UTC (permalink / raw)
To: linux-arm-kernel
In-Reply-To: <20110922082840.10520.85895.stgit@localhost6.localdomain6>
Cpuidle governor only suggests the state to enter using the
governor->select() interface, but allows the low level driver to
override the recommended state. The actual entered state
may be different because of software or hardware demotion. Software
demotion is done by the back-end cpuidle driver and can be accounted
correctly. Current cpuidle code uses last_state field to capture the
actual state entered and based on that updates the statistics for the
state entered.
Ideally the driver enter routine should update the counters,
and it should return the state actually entered rather than the time
spent there. The generic cpuidle code should simply handle where
the counters live in the sysfs namespace, not updating the counters.
Reference:
https://lkml.org/lkml/2011/3/25/52
To Do :
======
Russell King pointed out that in (V5) of this patch in
arch/arm/mach-at91/cpuidle.c, AT91 pieces may be broken.
In at91_enter_idle() routine, folks need to fix the two
consecutive asm() statements by combining
it to one as per the GCC reference manual.
Reference:
https://lkml.org/lkml/2011/6/6/273
Signed-off-by: Deepthi Dharwar <deepthi@linux.vnet.ibm.com>
Signed-off-by: Trinabh Gupta <g.trinabh@gmail.com>
---
arch/arm/mach-at91/cpuidle.c | 10 +++-
arch/arm/mach-davinci/cpuidle.c | 9 +++-
arch/arm/mach-exynos4/cpuidle.c | 7 ++-
arch/arm/mach-kirkwood/cpuidle.c | 12 ++++-
arch/arm/mach-omap2/cpuidle34xx.c | 67 +++++++++++++++++------------
arch/sh/kernel/cpu/shmobile/cpuidle.c | 12 +++--
drivers/acpi/processor_idle.c | 75 ++++++++++++++++++++++-----------
drivers/cpuidle/cpuidle.c | 32 +++++++-------
drivers/cpuidle/governors/ladder.c | 13 ++++++
drivers/cpuidle/governors/menu.c | 7 ++-
drivers/idle/intel_idle.c | 12 ++++-
include/linux/cpuidle.h | 7 +--
12 files changed, 164 insertions(+), 99 deletions(-)
diff --git a/arch/arm/mach-at91/cpuidle.c b/arch/arm/mach-at91/cpuidle.c
index 1cfeac1..4696a0d 100644
--- a/arch/arm/mach-at91/cpuidle.c
+++ b/arch/arm/mach-at91/cpuidle.c
@@ -33,7 +33,7 @@ static struct cpuidle_driver at91_idle_driver = {
/* Actual code that puts the SoC in different idle states */
static int at91_enter_idle(struct cpuidle_device *dev,
- struct cpuidle_state *state)
+ int index)
{
struct timeval before, after;
int idle_time;
@@ -41,10 +41,10 @@ static int at91_enter_idle(struct cpuidle_device *dev,
local_irq_disable();
do_gettimeofday(&before);
- if (state == &dev->states[0])
+ if (index == 0)
/* Wait for interrupt state */
cpu_do_idle();
- else if (state == &dev->states[1]) {
+ else if (index == 1) {
asm("b 1f; .align 5; 1:");
asm("mcr p15, 0, r0, c7, c10, 4"); /* drain write buffer */
saved_lpr = sdram_selfrefresh_enable();
@@ -55,7 +55,9 @@ static int at91_enter_idle(struct cpuidle_device *dev,
local_irq_enable();
idle_time = (after.tv_sec - before.tv_sec) * USEC_PER_SEC +
(after.tv_usec - before.tv_usec);
- return idle_time;
+
+ dev->last_residency = idle_time;
+ return index;
}
/* Initialize CPU idle by registering the idle states */
diff --git a/arch/arm/mach-davinci/cpuidle.c b/arch/arm/mach-davinci/cpuidle.c
index bd59f31..ca8582a 100644
--- a/arch/arm/mach-davinci/cpuidle.c
+++ b/arch/arm/mach-davinci/cpuidle.c
@@ -78,9 +78,9 @@ static struct davinci_ops davinci_states[DAVINCI_CPUIDLE_MAX_STATES] = {
/* Actual code that puts the SoC in different idle states */
static int davinci_enter_idle(struct cpuidle_device *dev,
- struct cpuidle_state *state)
+ int index)
{
- struct davinci_ops *ops = cpuidle_get_statedata(state);
+ struct davinci_ops *ops = cpuidle_get_statedata(&dev->states[index]);
struct timeval before, after;
int idle_time;
@@ -98,7 +98,10 @@ static int davinci_enter_idle(struct cpuidle_device *dev,
local_irq_enable();
idle_time = (after.tv_sec - before.tv_sec) * USEC_PER_SEC +
(after.tv_usec - before.tv_usec);
- return idle_time;
+
+ dev->last_residency = idle_time;
+
+ return index;
}
static int __init davinci_cpuidle_probe(struct platform_device *pdev)
diff --git a/arch/arm/mach-exynos4/cpuidle.c b/arch/arm/mach-exynos4/cpuidle.c
index bf7e96f..ea026e7 100644
--- a/arch/arm/mach-exynos4/cpuidle.c
+++ b/arch/arm/mach-exynos4/cpuidle.c
@@ -16,7 +16,7 @@
#include <asm/proc-fns.h>
static int exynos4_enter_idle(struct cpuidle_device *dev,
- struct cpuidle_state *state);
+ int index);
static struct cpuidle_state exynos4_cpuidle_set[] = {
[0] = {
@@ -37,7 +37,7 @@ static struct cpuidle_driver exynos4_idle_driver = {
};
static int exynos4_enter_idle(struct cpuidle_device *dev,
- struct cpuidle_state *state)
+ int index)
{
struct timeval before, after;
int idle_time;
@@ -52,7 +52,8 @@ static int exynos4_enter_idle(struct cpuidle_device *dev,
idle_time = (after.tv_sec - before.tv_sec) * USEC_PER_SEC +
(after.tv_usec - before.tv_usec);
- return idle_time;
+ dev->last_residency = idle_time;
+ return index;
}
static int __init exynos4_init_cpuidle(void)
diff --git a/arch/arm/mach-kirkwood/cpuidle.c b/arch/arm/mach-kirkwood/cpuidle.c
index f68d33f..358dd80 100644
--- a/arch/arm/mach-kirkwood/cpuidle.c
+++ b/arch/arm/mach-kirkwood/cpuidle.c
@@ -32,17 +32,17 @@ static DEFINE_PER_CPU(struct cpuidle_device, kirkwood_cpuidle_device);
/* Actual code that puts the SoC in different idle states */
static int kirkwood_enter_idle(struct cpuidle_device *dev,
- struct cpuidle_state *state)
+ int index)
{
struct timeval before, after;
int idle_time;
local_irq_disable();
do_gettimeofday(&before);
- if (state == &dev->states[0])
+ if (index == 0)
/* Wait for interrupt state */
cpu_do_idle();
- else if (state == &dev->states[1]) {
+ else if (index == 1) {
/*
* Following write will put DDR in self refresh.
* Note that we have 256 cycles before DDR puts it
@@ -57,7 +57,11 @@ static int kirkwood_enter_idle(struct cpuidle_device *dev,
local_irq_enable();
idle_time = (after.tv_sec - before.tv_sec) * USEC_PER_SEC +
(after.tv_usec - before.tv_usec);
- return idle_time;
+
+ /* Update last residency */
+ dev->last_residency = idle_time;
+
+ return index;
}
/* Initialize CPU idle by registering the idle states */
diff --git a/arch/arm/mach-omap2/cpuidle34xx.c b/arch/arm/mach-omap2/cpuidle34xx.c
index 4bf6e6e..58425c7 100644
--- a/arch/arm/mach-omap2/cpuidle34xx.c
+++ b/arch/arm/mach-omap2/cpuidle34xx.c
@@ -88,17 +88,19 @@ static int _cpuidle_deny_idle(struct powerdomain *pwrdm,
/**
* omap3_enter_idle - Programs OMAP3 to enter the specified state
* @dev: cpuidle device
- * @state: The target state to be programmed
+ * @index: the index of state to be entered
*
* Called from the CPUidle framework to program the device to the
* specified target state selected by the governor.
*/
static int omap3_enter_idle(struct cpuidle_device *dev,
- struct cpuidle_state *state)
+ int index)
{
- struct omap3_idle_statedata *cx = cpuidle_get_statedata(state);
+ struct omap3_idle_statedata *cx =
+ cpuidle_get_statedata(&dev->states[index]);
struct timespec ts_preidle, ts_postidle, ts_idle;
u32 mpu_state = cx->mpu_state, core_state = cx->core_state;
+ int idle_time;
/* Used to keep track of the total time in idle */
getnstimeofday(&ts_preidle);
@@ -113,7 +115,7 @@ static int omap3_enter_idle(struct cpuidle_device *dev,
goto return_sleep_time;
/* Deny idle for C1 */
- if (state == &dev->states[0]) {
+ if (index == 0) {
pwrdm_for_each_clkdm(mpu_pd, _cpuidle_deny_idle);
pwrdm_for_each_clkdm(core_pd, _cpuidle_deny_idle);
}
@@ -122,7 +124,7 @@ static int omap3_enter_idle(struct cpuidle_device *dev,
omap_sram_idle();
/* Re-allow idle for C1 */
- if (state == &dev->states[0]) {
+ if (index == 0) {
pwrdm_for_each_clkdm(mpu_pd, _cpuidle_allow_idle);
pwrdm_for_each_clkdm(core_pd, _cpuidle_allow_idle);
}
@@ -134,28 +136,35 @@ return_sleep_time:
local_irq_enable();
local_fiq_enable();
- return ts_idle.tv_nsec / NSEC_PER_USEC + ts_idle.tv_sec * USEC_PER_SEC;
+ idle_time = ts_idle.tv_nsec / NSEC_PER_USEC + ts_idle.tv_sec * \
+ USEC_PER_SEC;
+
+ /* Update cpuidle counters */
+ dev->last_residency = idle_time;
+
+ return index;
}
/**
* next_valid_state - Find next valid C-state
* @dev: cpuidle device
- * @state: Currently selected C-state
+ * @index: Index of currently selected c-state
*
- * If the current state is valid, it is returned back to the caller.
- * Else, this function searches for a lower c-state which is still
- * valid.
+ * If the state corresponding to index is valid, index is returned back
+ * to the caller. Else, this function searches for a lower c-state which is
+ * still valid (as defined in omap3_power_states[]) and returns its index.
*
* A state is valid if the 'valid' field is enabled and
* if it satisfies the enable_off_mode condition.
*/
-static struct cpuidle_state *next_valid_state(struct cpuidle_device *dev,
- struct cpuidle_state *curr)
+static int next_valid_state(struct cpuidle_device *dev,
+ int index)
{
- struct cpuidle_state *next = NULL;
+ struct cpuidle_state *curr = &dev->states[index];
struct omap3_idle_statedata *cx = cpuidle_get_statedata(curr);
u32 mpu_deepest_state = PWRDM_POWER_RET;
u32 core_deepest_state = PWRDM_POWER_RET;
+ int next_index = -1;
if (enable_off_mode) {
mpu_deepest_state = PWRDM_POWER_OFF;
@@ -172,20 +181,20 @@ static struct cpuidle_state *next_valid_state(struct cpuidle_device *dev,
if ((cx->valid) &&
(cx->mpu_state >= mpu_deepest_state) &&
(cx->core_state >= core_deepest_state)) {
- return curr;
+ return index;
} else {
int idx = OMAP3_NUM_STATES - 1;
/* Reach the current state starting at highest C-state */
for (; idx >= 0; idx--) {
if (&dev->states[idx] == curr) {
- next = &dev->states[idx];
+ next_index = idx;
break;
}
}
/* Should never hit this condition */
- WARN_ON(next == NULL);
+ WARN_ON(next_index == -1);
/*
* Drop to next valid state.
@@ -197,37 +206,39 @@ static struct cpuidle_state *next_valid_state(struct cpuidle_device *dev,
if ((cx->valid) &&
(cx->mpu_state >= mpu_deepest_state) &&
(cx->core_state >= core_deepest_state)) {
- next = &dev->states[idx];
+ next_index = idx;
break;
}
}
/*
* C1 is always valid.
- * So, no need to check for 'next==NULL' outside this loop.
+ * So, no need to check for 'next_index == -1' outside
+ * this loop.
*/
}
- return next;
+ return next_index;
}
/**
* omap3_enter_idle_bm - Checks for any bus activity
* @dev: cpuidle device
- * @state: The target state to be programmed
+ * @index: array index of target state to be programmed
*
* This function checks for any pending activity and then programs
* the device to the specified or a safer state.
*/
static int omap3_enter_idle_bm(struct cpuidle_device *dev,
- struct cpuidle_state *state)
+ int index)
{
- struct cpuidle_state *new_state;
+ struct cpuidle_state *state = &dev->states[index];
+ int new_state_idx;
u32 core_next_state, per_next_state = 0, per_saved_state = 0, cam_state;
struct omap3_idle_statedata *cx;
int ret;
if (!omap3_can_sleep()) {
- new_state = dev->safe_state;
+ new_state_idx = dev->safe_state_index;
goto select_state;
}
@@ -237,7 +248,7 @@ static int omap3_enter_idle_bm(struct cpuidle_device *dev,
*/
cam_state = pwrdm_read_pwrst(cam_pd);
if (cam_state == PWRDM_POWER_ON) {
- new_state = dev->safe_state;
+ new_state_idx = dev->safe_state_index;
goto select_state;
}
@@ -264,11 +275,10 @@ static int omap3_enter_idle_bm(struct cpuidle_device *dev,
if (per_next_state != per_saved_state)
pwrdm_set_next_pwrst(per_pd, per_next_state);
- new_state = next_valid_state(dev, state);
+ new_state_idx = next_valid_state(dev, index);
select_state:
- dev->last_state = new_state;
- ret = omap3_enter_idle(dev, new_state);
+ ret = omap3_enter_idle(dev, new_state_idx);
/* Restore original PER state if it was modified */
if (per_next_state != per_saved_state)
@@ -339,11 +349,12 @@ int __init omap3_idle_init(void)
cpuidle_register_driver(&omap3_idle_driver);
dev = &per_cpu(omap3_idle_dev, smp_processor_id());
+ dev->safe_state_index = -1;
/* C1 . MPU WFI + Core active */
cx = _fill_cstate(dev, 0, "MPU ON + CORE ON");
(&dev->states[0])->enter = omap3_enter_idle;
- dev->safe_state = &dev->states[0];
+ dev->safe_state_index = 0;
cx->valid = 1; /* C1 is always valid */
cx->mpu_state = PWRDM_POWER_ON;
cx->core_state = PWRDM_POWER_ON;
diff --git a/arch/sh/kernel/cpu/shmobile/cpuidle.c b/arch/sh/kernel/cpu/shmobile/cpuidle.c
index e4469e72..7be50d4c 100644
--- a/arch/sh/kernel/cpu/shmobile/cpuidle.c
+++ b/arch/sh/kernel/cpu/shmobile/cpuidle.c
@@ -25,11 +25,11 @@ static unsigned long cpuidle_mode[] = {
};
static int cpuidle_sleep_enter(struct cpuidle_device *dev,
- struct cpuidle_state *state)
+ int index)
{
unsigned long allowed_mode = arch_hwblk_sleep_mode();
ktime_t before, after;
- int requested_state = state - &dev->states[0];
+ int requested_state = index;
int allowed_state;
int k;
@@ -46,11 +46,13 @@ static int cpuidle_sleep_enter(struct cpuidle_device *dev,
*/
k = min_t(int, allowed_state, requested_state);
- dev->last_state = &dev->states[k];
before = ktime_get();
sh_mobile_call_standby(cpuidle_mode[k]);
after = ktime_get();
- return ktime_to_ns(ktime_sub(after, before)) >> 10;
+
+ dev->last_residency = (int)ktime_to_ns(ktime_sub(after, before)) >> 10;
+
+ return k;
}
static struct cpuidle_device cpuidle_dev;
@@ -84,7 +86,7 @@ void sh_mobile_setup_cpuidle(void)
state->flags |= CPUIDLE_FLAG_TIME_VALID;
state->enter = cpuidle_sleep_enter;
- dev->safe_state = state;
+ dev->safe_state_index = i-1;
if (sh_mobile_sleep_supported & SUSP_SH_SF) {
state = &dev->states[i++];
diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c
index 431ab11..9cd08ce 100644
--- a/drivers/acpi/processor_idle.c
+++ b/drivers/acpi/processor_idle.c
@@ -741,22 +741,24 @@ static inline void acpi_idle_do_entry(struct acpi_processor_cx *cx)
/**
* acpi_idle_enter_c1 - enters an ACPI C1 state-type
* @dev: the target CPU
- * @state: the state data
+ * @index: index of target state
*
* This is equivalent to the HALT instruction.
*/
static int acpi_idle_enter_c1(struct cpuidle_device *dev,
- struct cpuidle_state *state)
+ int index)
{
ktime_t kt1, kt2;
s64 idle_time;
struct acpi_processor *pr;
+ struct cpuidle_state *state = &dev->states[index];
struct acpi_processor_cx *cx = cpuidle_get_statedata(state);
pr = __this_cpu_read(processors);
+ dev->last_residency = 0;
if (unlikely(!pr))
- return 0;
+ return -EINVAL;
local_irq_disable();
@@ -764,7 +766,7 @@ static int acpi_idle_enter_c1(struct cpuidle_device *dev,
if (acpi_idle_suspend) {
local_irq_enable();
cpu_relax();
- return 0;
+ return -EINVAL;
}
lapic_timer_state_broadcast(pr, cx, 1);
@@ -773,37 +775,46 @@ static int acpi_idle_enter_c1(struct cpuidle_device *dev,
kt2 = ktime_get_real();
idle_time = ktime_to_us(ktime_sub(kt2, kt1));
+ /* Update device last_residency*/
+ dev->last_residency = (int)idle_time;
+
local_irq_enable();
cx->usage++;
lapic_timer_state_broadcast(pr, cx, 0);
- return idle_time;
+ return index;
}
/**
* acpi_idle_enter_simple - enters an ACPI state without BM handling
* @dev: the target CPU
- * @state: the state data
+ * @index: the index of suggested state
*/
static int acpi_idle_enter_simple(struct cpuidle_device *dev,
- struct cpuidle_state *state)
+ int index)
{
struct acpi_processor *pr;
+ struct cpuidle_state *state = &dev->states[index];
struct acpi_processor_cx *cx = cpuidle_get_statedata(state);
ktime_t kt1, kt2;
s64 idle_time_ns;
s64 idle_time;
pr = __this_cpu_read(processors);
+ dev->last_residency = 0;
if (unlikely(!pr))
- return 0;
-
- if (acpi_idle_suspend)
- return(acpi_idle_enter_c1(dev, state));
+ return -EINVAL;
local_irq_disable();
+ if (acpi_idle_suspend) {
+ local_irq_enable();
+ cpu_relax();
+ return -EINVAL;
+ }
+
+
if (cx->entry_method != ACPI_CSTATE_FFH) {
current_thread_info()->status &= ~TS_POLLING;
/*
@@ -815,7 +826,7 @@ static int acpi_idle_enter_simple(struct cpuidle_device *dev,
if (unlikely(need_resched())) {
current_thread_info()->status |= TS_POLLING;
local_irq_enable();
- return 0;
+ return -EINVAL;
}
}
@@ -837,6 +848,9 @@ static int acpi_idle_enter_simple(struct cpuidle_device *dev,
idle_time = idle_time_ns;
do_div(idle_time, NSEC_PER_USEC);
+ /* Update device last_residency*/
+ dev->last_residency = (int)idle_time;
+
/* Tell the scheduler how much we idled: */
sched_clock_idle_wakeup_event(idle_time_ns);
@@ -848,7 +862,7 @@ static int acpi_idle_enter_simple(struct cpuidle_device *dev,
lapic_timer_state_broadcast(pr, cx, 0);
cx->time += idle_time;
- return idle_time;
+ return index;
}
static int c3_cpu_count;
@@ -857,14 +871,15 @@ static DEFINE_SPINLOCK(c3_lock);
/**
* acpi_idle_enter_bm - enters C3 with proper BM handling
* @dev: the target CPU
- * @state: the state data
+ * @index: the index of suggested state
*
* If BM is detected, the deepest non-C3 idle state is entered instead.
*/
static int acpi_idle_enter_bm(struct cpuidle_device *dev,
- struct cpuidle_state *state)
+ int index)
{
struct acpi_processor *pr;
+ struct cpuidle_state *state = &dev->states[index];
struct acpi_processor_cx *cx = cpuidle_get_statedata(state);
ktime_t kt1, kt2;
s64 idle_time_ns;
@@ -872,22 +887,26 @@ static int acpi_idle_enter_bm(struct cpuidle_device *dev,
pr = __this_cpu_read(processors);
+ dev->last_residency = 0;
if (unlikely(!pr))
- return 0;
+ return -EINVAL;
- if (acpi_idle_suspend)
- return(acpi_idle_enter_c1(dev, state));
+
+ if (acpi_idle_suspend) {
+ cpu_relax();
+ return -EINVAL;
+ }
if (!cx->bm_sts_skip && acpi_idle_bm_check()) {
- if (dev->safe_state) {
- dev->last_state = dev->safe_state;
- return dev->safe_state->enter(dev, dev->safe_state);
+ if (dev->safe_state_index >= 0) {
+ return dev->states[dev->safe_state_index].enter(dev,
+ dev->safe_state_index);
} else {
local_irq_disable();
acpi_safe_halt();
local_irq_enable();
- return 0;
+ return -EINVAL;
}
}
@@ -904,7 +923,7 @@ static int acpi_idle_enter_bm(struct cpuidle_device *dev,
if (unlikely(need_resched())) {
current_thread_info()->status |= TS_POLLING;
local_irq_enable();
- return 0;
+ return -EINVAL;
}
}
@@ -954,6 +973,9 @@ static int acpi_idle_enter_bm(struct cpuidle_device *dev,
idle_time = idle_time_ns;
do_div(idle_time, NSEC_PER_USEC);
+ /* Update device last_residency*/
+ dev->last_residency = (int)idle_time;
+
/* Tell the scheduler how much we idled: */
sched_clock_idle_wakeup_event(idle_time_ns);
@@ -965,7 +987,7 @@ static int acpi_idle_enter_bm(struct cpuidle_device *dev,
lapic_timer_state_broadcast(pr, cx, 0);
cx->time += idle_time;
- return idle_time;
+ return index;
}
struct cpuidle_driver acpi_idle_driver = {
@@ -992,6 +1014,7 @@ static int acpi_processor_setup_cpuidle(struct acpi_processor *pr)
}
dev->cpu = pr->id;
+ dev->safe_state_index = -1;
for (i = 0; i < CPUIDLE_STATE_MAX; i++) {
dev->states[i].name[0] = '\0';
dev->states[i].desc[0] = '\0';
@@ -1027,13 +1050,13 @@ static int acpi_processor_setup_cpuidle(struct acpi_processor *pr)
state->flags |= CPUIDLE_FLAG_TIME_VALID;
state->enter = acpi_idle_enter_c1;
- dev->safe_state = state;
+ dev->safe_state_index = count;
break;
case ACPI_STATE_C2:
state->flags |= CPUIDLE_FLAG_TIME_VALID;
state->enter = acpi_idle_enter_simple;
- dev->safe_state = state;
+ dev->safe_state_index = count;
break;
case ACPI_STATE_C3:
diff --git a/drivers/cpuidle/cpuidle.c b/drivers/cpuidle/cpuidle.c
index d4c5423..88bd121 100644
--- a/drivers/cpuidle/cpuidle.c
+++ b/drivers/cpuidle/cpuidle.c
@@ -62,7 +62,7 @@ int cpuidle_idle_call(void)
{
struct cpuidle_device *dev = __this_cpu_read(cpuidle_devices);
struct cpuidle_state *target_state;
- int next_state;
+ int next_state, entered_state;
if (off)
return -ENODEV;
@@ -102,26 +102,27 @@ int cpuidle_idle_call(void)
target_state = &dev->states[next_state];
- /* enter the state and update stats */
- dev->last_state = target_state;
-
trace_power_start(POWER_CSTATE, next_state, dev->cpu);
trace_cpu_idle(next_state, dev->cpu);
- dev->last_residency = target_state->enter(dev, target_state);
+ entered_state = target_state->enter(dev, next_state);
trace_power_end(dev->cpu);
trace_cpu_idle(PWR_EVENT_EXIT, dev->cpu);
- if (dev->last_state)
- target_state = dev->last_state;
-
- target_state->time += (unsigned long long)dev->last_residency;
- target_state->usage++;
+ if (entered_state >= 0) {
+ /* Update cpuidle counters */
+ /* This can be moved to within driver enter routine
+ * but that results in multiple copies of same code.
+ */
+ dev->states[entered_state].time +=
+ (unsigned long long)dev->last_residency;
+ dev->states[entered_state].usage++;
+ }
/* give the governor an opportunity to reflect on the outcome */
if (cpuidle_curr_governor->reflect)
- cpuidle_curr_governor->reflect(dev);
+ cpuidle_curr_governor->reflect(dev, entered_state);
return 0;
}
@@ -172,11 +173,10 @@ void cpuidle_resume_and_unlock(void)
EXPORT_SYMBOL_GPL(cpuidle_resume_and_unlock);
#ifdef CONFIG_ARCH_HAS_CPU_RELAX
-static int poll_idle(struct cpuidle_device *dev, struct cpuidle_state *st)
+static int poll_idle(struct cpuidle_device *dev, int index)
{
ktime_t t1, t2;
s64 diff;
- int ret;
t1 = ktime_get();
local_irq_enable();
@@ -188,8 +188,9 @@ static int poll_idle(struct cpuidle_device *dev, struct cpuidle_state *st)
if (diff > INT_MAX)
diff = INT_MAX;
- ret = (int) diff;
- return ret;
+ dev->last_residency = (int) diff;
+
+ return index;
}
static void poll_idle_init(struct cpuidle_device *dev)
@@ -248,7 +249,6 @@ int cpuidle_enable_device(struct cpuidle_device *dev)
dev->states[i].time = 0;
}
dev->last_residency = 0;
- dev->last_state = NULL;
smp_wmb();
diff --git a/drivers/cpuidle/governors/ladder.c b/drivers/cpuidle/governors/ladder.c
index 12c9890..6a686a7 100644
--- a/drivers/cpuidle/governors/ladder.c
+++ b/drivers/cpuidle/governors/ladder.c
@@ -153,11 +153,24 @@ static int ladder_enable_device(struct cpuidle_device *dev)
return 0;
}
+/**
+ * ladder_reflect - update the correct last_state_idx
+ * @dev: the CPU
+ * @index: the index of actual state entered
+ */
+static void ladder_reflect(struct cpuidle_device *dev, int index)
+{
+ struct ladder_device *ldev = &__get_cpu_var(ladder_devices);
+ if (index > 0)
+ ldev->last_state_idx = index;
+}
+
static struct cpuidle_governor ladder_governor = {
.name = "ladder",
.rating = 10,
.enable = ladder_enable_device,
.select = ladder_select_state,
+ .reflect = ladder_reflect,
.owner = THIS_MODULE,
};
diff --git a/drivers/cpuidle/governors/menu.c b/drivers/cpuidle/governors/menu.c
index c47f3d0..e4b200c 100644
--- a/drivers/cpuidle/governors/menu.c
+++ b/drivers/cpuidle/governors/menu.c
@@ -310,14 +310,17 @@ static int menu_select(struct cpuidle_device *dev)
/**
* menu_reflect - records that data structures need update
* @dev: the CPU
+ * @index: the index of actual entered state
*
* NOTE: it's important to be fast here because this operation will add to
* the overall exit latency.
*/
-static void menu_reflect(struct cpuidle_device *dev)
+static void menu_reflect(struct cpuidle_device *dev, int index)
{
struct menu_device *data = &__get_cpu_var(menu_devices);
- data->needs_update = 1;
+ data->last_state_idx = index;
+ if (index >= 0)
+ data->needs_update = 1;
}
/**
diff --git a/drivers/idle/intel_idle.c b/drivers/idle/intel_idle.c
index a46dddf..a1c888d 100644
--- a/drivers/idle/intel_idle.c
+++ b/drivers/idle/intel_idle.c
@@ -81,7 +81,7 @@ static unsigned int mwait_substates;
static unsigned int lapic_timer_reliable_states = (1 << 1); /* Default to only C1 */
static struct cpuidle_device __percpu *intel_idle_cpuidle_devices;
-static int intel_idle(struct cpuidle_device *dev, struct cpuidle_state *state);
+static int intel_idle(struct cpuidle_device *dev, int index);
static struct cpuidle_state *cpuidle_state_table;
@@ -209,12 +209,13 @@ static struct cpuidle_state atom_cstates[MWAIT_MAX_NUM_CSTATES] = {
/**
* intel_idle
* @dev: cpuidle_device
- * @state: cpuidle state
+ * @index: index of cpuidle state
*
*/
-static int intel_idle(struct cpuidle_device *dev, struct cpuidle_state *state)
+static int intel_idle(struct cpuidle_device *dev, int index)
{
unsigned long ecx = 1; /* break on interrupt flag */
+ struct cpuidle_state *state = &dev->states[index];
unsigned long eax = (unsigned long)cpuidle_get_statedata(state);
unsigned int cstate;
ktime_t kt_before, kt_after;
@@ -256,7 +257,10 @@ static int intel_idle(struct cpuidle_device *dev, struct cpuidle_state *state)
if (!(lapic_timer_reliable_states & (1 << (cstate))))
clockevents_notify(CLOCK_EVT_NOTIFY_BROADCAST_EXIT, &cpu);
- return usec_delta;
+ /* Update cpuidle counters */
+ dev->last_residency = (int)usec_delta;
+
+ return index;
}
static void __setup_broadcast_timer(void *arg)
diff --git a/include/linux/cpuidle.h b/include/linux/cpuidle.h
index b51629e..8da811b 100644
--- a/include/linux/cpuidle.h
+++ b/include/linux/cpuidle.h
@@ -42,7 +42,7 @@ struct cpuidle_state {
unsigned long long time; /* in US */
int (*enter) (struct cpuidle_device *dev,
- struct cpuidle_state *state);
+ int index);
};
/* Idle State Flags */
@@ -87,13 +87,12 @@ struct cpuidle_device {
int state_count;
struct cpuidle_state states[CPUIDLE_STATE_MAX];
struct cpuidle_state_kobj *kobjs[CPUIDLE_STATE_MAX];
- struct cpuidle_state *last_state;
struct list_head device_list;
struct kobject kobj;
struct completion kobj_unregister;
void *governor_data;
- struct cpuidle_state *safe_state;
+ int safe_state_index;
int (*prepare) (struct cpuidle_device *dev);
};
@@ -169,7 +168,7 @@ struct cpuidle_governor {
void (*disable) (struct cpuidle_device *dev);
int (*select) (struct cpuidle_device *dev);
- void (*reflect) (struct cpuidle_device *dev);
+ void (*reflect) (struct cpuidle_device *dev, int index);
struct module *owner;
};
^ permalink raw reply related
* [RFC PATCH V6 0/4] cpuidle: Global registration of idle states with per-cpu statistics
From: Deepthi Dharwar @ 2011-09-22 8:28 UTC (permalink / raw)
To: linux-arm-kernel
The following patch series implements global registration of cpuidle
states, and also has the necessary data structure changes to
accommodate the per-cpu writable members of the cpuidle_states
structure.
This patch series had been in discussion earlier and
following are the links to the previous discussions.
v1 --> https://lkml.org/lkml/2011/3/22/161
v2 --> https://lkml.org/lkml/2011/1/13/98
v3 --> https://lkml.org/lkml/2011/2/8/73
v4 --> https://lkml.org/lkml/2011/4/28/312
v5 --> https://lkml.org/lkml/2011/6/6/259
Changes from previous version (V5):
Rebased the series to 3.1-rc7
Tests done:
1. Compile tested for ARM using the following configs: da8xx_omapl_defconfig,
exynos4_defconfig, kirkwood_defconfig, omap2plus_defconfig,
at91rm9200_defconfig
2. Boot tested on x86 nehalem with multiple C-states for both intel_idle
and acpi_idle drivers.
3. Boot tested on T60p thinkpad that has T2600 cpu with multiple C-states.
Also tested the case when there is dynamic changes in C-states
AC <-> Battery Power switch.
Brief description of the patches:
Core change in this series is to split the cpuidle_device structure
into two parts, i.e global and per-cpu basis.
The per-cpu pieces are mostly generic statistics that can be independent
of current running driver. As a result of these changes, there is single
copy of cpuidle_states structure and single registration done by one
cpu. The low level driver is free to set per-cpu driver data on
each cpu if needed using the cpuidle_set_statedata() as the case
today. Only in very rare cases asymmetric C-states exist which can be
handled within the cpuidle driver. Most architectures do not have
asymmetric C-states.
First two patches in the series facilitate splitting of cpuidle_states
and cpuidle_device structure and next two patches do the actual split,
change the API's and make existing code follow the changed API.
[1/4] - Move the idle residency accounting part from cpuidle.c to
the respective low level drivers, so that the accounting can
be accurately maintained if the driver decides to demote the
chosen (suggested) by the governor.
[2/4] - removes the cpuidle_device()->prepare API since is is not
widely used and the only use case was to allow software
demotion using CPUIDLE_FLAG_IGNORE flag. Both these
functions can be absorbed within the cpuidle back-end
driver ad hence deprecating the prepare routine and the
CPUIDLE_FLAG_IGNORE flag.
- Ref: https://lkml.org/lkml/2011/3/25/52
[3/4] - Splits the usage statistics (read/write) part out of
cpuidle_state structure, so that the states can become read
only and hence made global.
[4/4] - Most APIs will now need to pass pointer to both global
cpuidle_driver and per-cpu cpuidle_device structure.
arch/arm/mach-at91/cpuidle.c | 41 +++--
arch/arm/mach-davinci/cpuidle.c | 51 ++++---
arch/arm/mach-exynos4/cpuidle.c | 30 ++--
arch/arm/mach-kirkwood/cpuidle.c | 42 +++---
arch/arm/mach-omap2/cpuidle34xx.c | 133 +++++++++++------
arch/sh/kernel/cpu/shmobile/cpuidle.c | 28 ++--
drivers/acpi/processor_driver.c | 20 ---
drivers/acpi/processor_idle.c | 251 +++++++++++++++++++++++++++------
drivers/cpuidle/cpuidle.c | 86 ++++-------
drivers/cpuidle/driver.c | 25 +++
drivers/cpuidle/governors/ladder.c | 41 ++++-
drivers/cpuidle/governors/menu.c | 29 ++--
drivers/cpuidle/sysfs.c | 22 ++-
drivers/idle/intel_idle.c | 130 +++++++++++++----
include/acpi/processor.h | 1
include/linux/cpuidle.h | 52 ++++---
16 files changed, 650 insertions(+), 332 deletions(-)
--
Thanks
-Deepthi
^ permalink raw reply
* [PATCH] dmaengine: delete redundant chan_id and chancnt initialization in dma drivers
From: Russell King - ARM Linux @ 2011-09-22 8:22 UTC (permalink / raw)
To: linux-arm-kernel
In-Reply-To: <CAGsJ_4zURv1_zJ0rwZawa8VSOw0kT9U4-cCCj2Q4-BhV1pdTHA@mail.gmail.com>
On Thu, Sep 22, 2011 at 08:08:44AM +0800, Barry Song wrote:
> actually i don't like the way dmaengine core handles chan_id. in my
> opinion, every dmac only needs to tell dmaengine core the chan_base.
> then dmaengine core set the id in a global scale.
Think about where we're heading with DT - with the description of the
hardware setup. We're no longer interested in a global number from
0 to N. We're more interested in per-device numbering.
^ permalink raw reply
* [PATCH 1/3] arm/tegra: Move EN_VDD_1V05_GPIO to board-harmony.h
From: Russell King - ARM Linux @ 2011-09-22 8:11 UTC (permalink / raw)
To: linux-arm-kernel
In-Reply-To: <CAOesGMisOtEQpcS-hHi-3brpYzJr-UiB6b71c+bwkesPDk9iuA@mail.gmail.com>
On Wed, Sep 21, 2011 at 01:16:49PM -0700, Olof Johansson wrote:
> Works for me. Or I could stage it in a topic branch that would be
> merged after Russell's GPIO tree.
Holding stuff off from being merged doesn't work. If you have the
following commit structure:
A---...-----M1-B-C-M2
+---A1-B1-C1' /
+-A2-B2-C2-------'
Now, lets say A2 depends on C1. Merely delaying the stuff so that M2
happens after M1 is insufficient to ensure git state doesn't break.
When bisecting, its entirely possible that the bisect algorithm may
chose B2 as a potential test candidate. At that point you end up with
A2, but without C1.
The only way to solve this is to have A2 following on from C1 - which
of course requires A1..C1 to be declared stable and either pulled into
your local tree or for A2..C2 to be submitted to the same tree which
A1..C1 are already in.
^ permalink raw reply
* [PATCH v5 09/15] OMAP2+: UART: Add runtime pm support for omap-serial driver
From: Govindraj @ 2011-09-22 7:55 UTC (permalink / raw)
To: linux-arm-kernel
In-Reply-To: <CACVXFVMpvF5foA1asLYE5WbvHQ3b_eXaBpiMT7Q1h0KHDGLSCg@mail.gmail.com>
On Thu, Sep 22, 2011 at 1:18 PM, Ming Lei <tom.leiming@gmail.com> wrote:
> Hi,
>
> On Wed, Sep 21, 2011 at 8:13 PM, Govindraj.R <govindraj.raja@ti.com> wrote:
>> Adapts omap-serial driver to use pm_runtime API's.
>
>> ? ? ? ?console_unlock();
>>
>> - ? ? ? if ((cpu_is_omap34xx() && bdata->pads) ||
>> - ? ? ? ? ? ? ? (pdata->wk_en && pdata->wk_mask))
>> + ? ? ? if ((cpu_is_omap34xx() && bdata->pads))
>> ? ? ? ? ? ? ? ?device_init_wakeup(&pdev->dev, true);
>
> Just a bit curious, why doesn't the code enable wakeup at default
> on omap4, which will disable runtime pm of serial port on omap4.
>
yes sure will add for omap4.
> I have tested your patches on omap4 panda(enable wakeup at
> default manually), runtime pm of serial port 2 can work well and
> remote wakeup too.
>
Thanks, for testing.
--
Govindraj.R
^ permalink raw reply
page: next (older) | prev (newer) | latest
- recent:[subjects (threaded)|topics (new)|topics (active)]
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox