diff options
| author | Peter Zijlstra <peterz@infradead.org> | 2023-01-12 20:43:22 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2023-01-13 11:46:40 +0100 |
| commit | b3f46658ce40a3467cda82f920dd9d5325ab0eaf (patch) | |
| tree | 456b2037fdda90ce136a781089651c085e252812 /arch/arm/mach-imx | |
| parent | e038f7b8028a1d1bc8ac82351c71ea538f19a879 (diff) | |
cpuidle, ARM/imx6: Push RCU-idle into driver
Doing RCU-idle outside the driver, only to then temporarily enable it
again, at least twice, before going idle is suboptimal.
Notably both cpu_pm_enter() and cpu_cluster_pm_enter() implicity
re-enable RCU.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Tested-by: Tony Lindgren <tony@atomide.com>
Tested-by: Ulf Hansson <ulf.hansson@linaro.org>
Reviewed-by: Frederic Weisbecker <frederic@kernel.org>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Link: https://lore.kernel.org/r/20230112195539.821714572@infradead.org
Diffstat (limited to 'arch/arm/mach-imx')
| -rw-r--r-- | arch/arm/mach-imx/cpuidle-imx6sx.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/arch/arm/mach-imx/cpuidle-imx6sx.c b/arch/arm/mach-imx/cpuidle-imx6sx.c index 74ea1720e3d8..1dc01f6b0f36 100644 --- a/arch/arm/mach-imx/cpuidle-imx6sx.c +++ b/arch/arm/mach-imx/cpuidle-imx6sx.c @@ -47,7 +47,9 @@ static int imx6sx_enter_wait(struct cpuidle_device *dev, cpu_pm_enter(); cpu_cluster_pm_enter(); + ct_idle_enter(); cpu_suspend(0, imx6sx_idle_finish); + ct_idle_exit(); cpu_cluster_pm_exit(); cpu_pm_exit(); @@ -87,7 +89,8 @@ static struct cpuidle_driver imx6sx_cpuidle_driver = { */ .exit_latency = 300, .target_residency = 500, - .flags = CPUIDLE_FLAG_TIMER_STOP, + .flags = CPUIDLE_FLAG_TIMER_STOP | + CPUIDLE_FLAG_RCU_IDLE, .enter = imx6sx_enter_wait, .name = "LOW-POWER-IDLE", .desc = "ARM power off", |