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

[Peter Zijlstra <peterz@xxxxxxxxxxxxx>]

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@xxxxxxxxxxxxx>
---
 arch/arm/mach-imx/cpuidle-imx6sx.c |    5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

--- 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",