Notify runtime PM when the CPU is going to be powered off in the idle state. This allows for runtime PM suspend/resume of the CPU as well as its PM domain.
Cc: Daniel Lezcano <[email protected]> Cc: Lorenzo Pieralisi <[email protected]> Signed-off-by: Lina Iyer <[email protected]> --- drivers/cpuidle/cpuidle-arm.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/cpuidle/cpuidle-arm.c b/drivers/cpuidle/cpuidle-arm.c index 545069d..8e72a23 100644 --- a/drivers/cpuidle/cpuidle-arm.c +++ b/drivers/cpuidle/cpuidle-arm.c @@ -11,13 +11,16 @@ #define pr_fmt(fmt) "CPUidle arm: " fmt +#include <linux/cpu.h> #include <linux/cpuidle.h> #include <linux/cpumask.h> #include <linux/cpu_pm.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/of.h> +#include <linux/pm_runtime.h> #include <linux/slab.h> +#include <linux/rcupdate.h> #include <asm/cpuidle.h> @@ -45,6 +48,10 @@ static int arm_enter_idle_state(struct cpuidle_device *dev, ret = cpu_pm_enter(); if (!ret) { + struct device *cpu_dev = get_cpu_device(dev->cpu); + + RCU_NONIDLE(pm_runtime_put_sync_suspend(cpu_dev)); + /* * Pass idle state index to cpu_suspend which in turn will * call the CPU ops suspend protocol with idle index as a @@ -52,6 +59,7 @@ static int arm_enter_idle_state(struct cpuidle_device *dev, */ arm_cpuidle_suspend(idx); + RCU_NONIDLE(pm_runtime_get_sync(cpu_dev)); cpu_pm_exit(); } -- 2.1.4 -- To unsubscribe from this list: send the line "unsubscribe linux-arm-msm" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
