diff mbox series

[09/36] cpuidle,imx6: Push RCU-idle into driver

Message ID 20220608144516.489126887@infradead.org
State New
Headers show
Series cpuidle,rcu: Cleanup the mess | expand

Commit Message

Peter Zijlstra June 8, 2022, 2:27 p.m. UTC 
Doing RCU-idle outside the driver, only to then temporarily enable it
again, at least twice, before going idle is daft.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
---
 arch/arm/mach-imx/cpuidle-imx6sx.c |    5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)
diff mbox series

Patch

--- 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 cpui
 		cpu_pm_enter();
 		cpu_cluster_pm_enter();
 
+		rcu_idle_enter();
 		cpu_suspend(0, imx6sx_idle_finish);
+		rcu_idle_exit();
 
 		cpu_cluster_pm_exit();
 		cpu_pm_exit();
@@ -87,7 +89,8 @@  static struct cpuidle_driver imx6sx_cpui
 			 */
 			.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",