diff options
Diffstat (limited to 'drivers/cpuidle/cpuidle.c')
| -rw-r--r-- | drivers/cpuidle/cpuidle.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/cpuidle/cpuidle.c b/drivers/cpuidle/cpuidle.c index a5d9f2e470ea..33253930247f 100644 --- a/drivers/cpuidle/cpuidle.c +++ b/drivers/cpuidle/cpuidle.c @@ -112,7 +112,12 @@ int cpuidle_find_deepest_state(struct cpuidle_driver *drv, static void enter_freeze_proper(struct cpuidle_driver *drv, struct cpuidle_device *dev, int index) { - tick_freeze(); + /* + * trace_suspend_resume() called by tick_freeze() for the last CPU + * executing it contains RCU usage regarded as invalid in the idle + * context, so tell RCU about that. + */ + RCU_NONIDLE(tick_freeze()); /* * The state used here cannot be a "coupled" one, because the "coupled" * cpuidle mechanism enables interrupts and doing that with timekeeping @@ -123,7 +128,7 @@ static void enter_freeze_proper(struct cpuidle_driver *drv, WARN_ON(!irqs_disabled()); /* * timekeeping_resume() that will be called by tick_unfreeze() for the - * last CPU executing it calls functions containing RCU read-side + * first CPU executing it calls functions containing RCU read-side * critical sections, so tell RCU about that. */ RCU_NONIDLE(tick_unfreeze()); |
