[PATCH 1/9] perf/arm: Move 32-bit PMU drivers to drivers/perf/

Rob Herring (Arm)
2024-06-07T20:32:26Z

It is preferred to put drivers under drivers/ rather than under arch/.
The PMU drivers also depend on arm_pmu.c, so it's better to place them
all together.

Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
---
arch/arm/kernel/Makefile | 2 --
drivers/perf/Kconfig | 12 ++++++++++++
drivers/perf/Makefile | 3 +++
arch/arm/kernel/perf_event_v6.c => drivers/perf/arm_v6_pmu.c | 3 ---
arch/arm/kernel/perf_event_v7.c => drivers/perf/arm_v7_pmu.c | 3 ---
.../perf_event_xscale.c => drivers/perf/arm_xscale_pmu.c | 3 ---
6 files changed, 15 insertions(+), 11 deletions(-)

diff --git a/arch/arm/kernel/Makefile b/arch/arm/kernel/Makefile
index 89a77e3f51d2..aaae31b8c4a5 100644
--- a/arch/arm/kernel/Makefile
+++ b/arch/arm/kernel/Makefile
@@ -78,8 +78,6 @@ obj-$(CONFIG_CPU_XSC3) += xscale-cp0.o
obj-$(CONFIG_CPU_MOHAWK) += xscale-cp0.o
obj-$(CONFIG_IWMMXT) += iwmmxt.o
obj-$(CONFIG_PERF_EVENTS) += perf_regs.o perf_callchain.o
-obj-$(CONFIG_HW_PERF_EVENTS) += perf_event_xscale.o perf_event_v6.o \
- perf_event_v7.o
AFLAGS_iwmmxt.o := -Wa,-mcpu=iwmmxt
obj-$(CONFIG_ARM_CPU_TOPOLOGY) += topology.o
obj-$(CONFIG_VDSO) += vdso.o
diff --git a/drivers/perf/Kconfig b/drivers/perf/Kconfig
index 7526a9e714fa..aa9530b4064f 100644
--- a/drivers/perf/Kconfig
+++ b/drivers/perf/Kconfig
@@ -56,6 +56,18 @@ config ARM_PMU
Say y if you want to use CPU performance monitors on ARM-based
systems.

+config ARM_V6_PMU
+ depends on ARM_PMU && (CPU_V6 || CPU_V6K)
+ def_bool y
+
+config ARM_V7_PMU
+ depends on ARM_PMU && CPU_V7
+ def_bool y
+
+config ARM_XSCALE_PMU
+ depends on ARM_PMU && CPU_XSCALE
+ def_bool y
+
config RISCV_PMU
depends on RISCV
bool "RISC-V PMU framework"
diff --git a/drivers/perf/Makefile b/drivers/perf/Makefile
index 29b1c28203ef..d43df81d52f7 100644
--- a/drivers/perf/Makefile
+++ b/drivers/perf/Makefile
@@ -6,6 +6,9 @@ obj-$(CONFIG_ARM_DSU_PMU) += arm_dsu_pmu.o
obj-$(CONFIG_ARM_PMU) += arm_pmu.o arm_pmu_platform.o
obj-$(CONFIG_ARM_PMU_ACPI) += arm_pmu_acpi.o
obj-$(CONFIG_ARM_PMUV3) += arm_pmuv3.o
+obj-$(CONFIG_ARM_V6_PMU) += arm_v6_pmu.o
+obj-$(CONFIG_ARM_V7_PMU) += arm_v7_pmu.o
+obj-$(CONFIG_ARM_XSCALE_PMU) += arm_xscale_pmu.o
obj-$(CONFIG_ARM_SMMU_V3_PMU) += arm_smmuv3_pmu.o
obj-$(CONFIG_FSL_IMX8_DDR_PMU) += fsl_imx8_ddr_perf.o
obj-$(CONFIG_FSL_IMX9_DDR_PMU) += fsl_imx9_ddr_perf.o
diff --git a/arch/arm/kernel/perf_event_v6.c b/drivers/perf/arm_v6_pmu.c
similarity index 99%
rename from arch/arm/kernel/perf_event_v6.c
rename to drivers/perf/arm_v6_pmu.c
index d9fd53841591..f7593843bb85 100644
--- a/arch/arm/kernel/perf_event_v6.c
+++ b/drivers/perf/arm_v6_pmu.c
@@ -31,8 +31,6 @@
* enable the interrupt.
*/

-#if defined(CONFIG_CPU_V6) || defined(CONFIG_CPU_V6K)
-
#include <asm/cputype.h>
#include <asm/irq_regs.h>

@@ -445,4 +443,3 @@ static struct platform_driver armv6_pmu_driver = {
};

builtin_platform_driver(armv6_pmu_driver);
-#endif /* CONFIG_CPU_V6 || CONFIG_CPU_V6K */
diff --git a/arch/arm/kernel/perf_event_v7.c b/drivers/perf/arm_v7_pmu.c
similarity index 99%
rename from arch/arm/kernel/perf_event_v7.c
rename to drivers/perf/arm_v7_pmu.c
index a3322e2b3ea4..fdd936fbd188 100644
--- a/arch/arm/kernel/perf_event_v7.c
+++ b/drivers/perf/arm_v7_pmu.c
@@ -17,8 +17,6 @@
* counter and all 4 performance counters together can be reset separately.
*/

-#ifdef CONFIG_CPU_V7
-
#include <asm/cp15.h>
#include <asm/cputype.h>
#include <asm/irq_regs.h>
@@ -2002,4 +2000,3 @@ static struct platform_driver armv7_pmu_driver = {
};

builtin_platform_driver(armv7_pmu_driver);
-#endif /* CONFIG_CPU_V7 */
diff --git a/arch/arm/kernel/perf_event_xscale.c b/drivers/perf/arm_xscale_pmu.c
similarity index 99%
rename from arch/arm/kernel/perf_event_xscale.c
rename to drivers/perf/arm_xscale_pmu.c
index 7a2ba1c689a7..3d8b72d6b37f 100644
--- a/arch/arm/kernel/perf_event_xscale.c
+++ b/drivers/perf/arm_xscale_pmu.c
@@ -13,8 +13,6 @@
* PMU structures.
*/

-#ifdef CONFIG_CPU_XSCALE
-
#include <asm/cputype.h>
#include <asm/irq_regs.h>

@@ -745,4 +743,3 @@ static struct platform_driver xscale_pmu_driver = {
};

builtin_platform_driver(xscale_pmu_driver);
-#endif /* CONFIG_CPU_XSCALE */

--
2.43.0