[PATCH v3 49/51] cpuidle, arch: Mark all regular cpuidle_state::enter methods __cpuidle

Peter Zijlstra
Thu, 12 Jan 2023 19:44:03 -0000

For all cpuidle drivers that do not use CPUIDLE_FLAG_RCU_IDLE (iow,
the simple ones) make sure all the functions are marked __cpuidle.

( due to lack of noinstr validation on these platforms it is entirely
  possible this isn't complete )

Signed-off-by: Peter Zijlstra (Intel) <peterz at infradead.org>
---
 arch/arm/kernel/cpuidle.c           |    4 ++--
 arch/arm/mach-davinci/cpuidle.c     |    4 ++--
 arch/arm/mach-imx/cpuidle-imx5.c    |    4 ++--
 arch/arm/mach-imx/cpuidle-imx6sl.c  |    4 ++--
 arch/arm/mach-imx/cpuidle-imx7ulp.c |    4 ++--
 arch/arm/mach-s3c/cpuidle-s3c64xx.c |    5 ++---
 arch/mips/kernel/idle.c             |    6 +++---
 7 files changed, 15 insertions(+), 16 deletions(-)

--- a/arch/arm/kernel/cpuidle.c
+++ b/arch/arm/kernel/cpuidle.c
@@ -26,8 +26,8 @@ static struct cpuidle_ops cpuidle_ops[NR
  *
  * Returns the index passed as parameter
  */
-int arm_cpuidle_simple_enter(struct cpuidle_device *dev,
-		struct cpuidle_driver *drv, int index)
+__cpuidle int arm_cpuidle_simple_enter(struct cpuidle_device *dev, struct
+				       cpuidle_driver *drv, int index)
 {
 	cpu_do_idle();

--- a/arch/arm/mach-davinci/cpuidle.c
+++ b/arch/arm/mach-davinci/cpuidle.c
@@ -44,8 +44,8 @@ static void davinci_save_ddr_power(int e
 }

 /* 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)
+static __cpuidle int davinci_enter_idle(struct cpuidle_device *dev,
+					struct cpuidle_driver *drv, int index)
 {
 	davinci_save_ddr_power(1, ddr2_pdown);
 	cpu_do_idle();
--- a/arch/arm/mach-imx/cpuidle-imx5.c
+++ b/arch/arm/mach-imx/cpuidle-imx5.c
@@ -8,8 +8,8 @@
 #include <asm/system_misc.h>
 #include "cpuidle.h"

-static int imx5_cpuidle_enter(struct cpuidle_device *dev,
-			      struct cpuidle_driver *drv, int index)
+static __cpuidle int imx5_cpuidle_enter(struct cpuidle_device *dev,
+					struct cpuidle_driver *drv, int index)
 {
 	arm_pm_idle();
 	return index;
--- a/arch/arm/mach-imx/cpuidle-imx6sl.c
+++ b/arch/arm/mach-imx/cpuidle-imx6sl.c
@@ -11,8 +11,8 @@
 #include "common.h"
 #include "cpuidle.h"

-static int imx6sl_enter_wait(struct cpuidle_device *dev,
-			    struct cpuidle_driver *drv, int index)
+static __cpuidle int imx6sl_enter_wait(struct cpuidle_device *dev,
+				       struct cpuidle_driver *drv, int index)
 {
 	imx6_set_lpm(WAIT_UNCLOCKED);
 	/*
--- a/arch/arm/mach-imx/cpuidle-imx7ulp.c
+++ b/arch/arm/mach-imx/cpuidle-imx7ulp.c
@@ -12,8 +12,8 @@
 #include "common.h"
 #include "cpuidle.h"

-static int imx7ulp_enter_wait(struct cpuidle_device *dev,
-			    struct cpuidle_driver *drv, int index)
+static __cpuidle int imx7ulp_enter_wait(struct cpuidle_device *dev,
+					struct cpuidle_driver *drv, int index)
 {
 	if (index == 1)
 		imx7ulp_set_lpm(ULP_PM_WAIT);
--- a/arch/arm/mach-s3c/cpuidle-s3c64xx.c
+++ b/arch/arm/mach-s3c/cpuidle-s3c64xx.c
@@ -19,9 +19,8 @@
 #include "regs-sys-s3c64xx.h"
 #include "regs-syscon-power-s3c64xx.h"

-static int s3c64xx_enter_idle(struct cpuidle_device *dev,
-			      struct cpuidle_driver *drv,
-			      int index)
+static __cpuidle int s3c64xx_enter_idle(struct cpuidle_device *dev,
+					struct cpuidle_driver *drv, int index)
 {
 	unsigned long tmp;

--- a/arch/mips/kernel/idle.c
+++ b/arch/mips/kernel/idle.c
@@ -241,7 +241,7 @@ void __init check_wait(void)
 	}
 }

-void arch_cpu_idle(void)
+__cpuidle void arch_cpu_idle(void)
 {
 	if (cpu_wait)
 		cpu_wait();
@@ -249,8 +249,8 @@ void arch_cpu_idle(void)

 #ifdef CONFIG_CPU_IDLE

-int mips_cpuidle_wait_enter(struct cpuidle_device *dev,
-			    struct cpuidle_driver *drv, int index)
+__cpuidle int mips_cpuidle_wait_enter(struct cpuidle_device *dev,
+				      struct cpuidle_driver *drv, int index)
 {
 	arch_cpu_idle();
 	return index;