diff options
| author | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2014-06-02 13:02:04 +0200 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2014-06-02 13:02:04 +0200 |
| commit | 28da5099700af743e2303b65b61c3a2bc1668ebc (patch) | |
| tree | ab7f2adb8d43939c4bcced1bfac3c6add57f9b1a /kernel | |
| parent | eb5a12a69ea8cd43f1d3887fe2559df35e0f1955 (diff) | |
| parent | 9051785f6928456db0692b8ca972778b9bf42099 (diff) | |
Merge branch 'pm-cpuidle'
* pm-cpuidle:
PM / suspend: Always use deepest C-state in the "freeze" sleep state
cpuidle / menu: move repeated correction factor check to init
cpuidle / menu: Return (-1) if there are no suitable states
cpuidle: Combine cpuidle_enabled() with cpuidle_select()
ARM: clps711x: Add cpuidle driver
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/power/suspend.c | 2 | ||||
| -rw-r--r-- | kernel/sched/idle.c | 20 |
2 files changed, 9 insertions, 13 deletions
diff --git a/kernel/power/suspend.c b/kernel/power/suspend.c index 8233cd4047d..155721f7f90 100644 --- a/kernel/power/suspend.c +++ b/kernel/power/suspend.c @@ -54,9 +54,11 @@ static void freeze_begin(void) static void freeze_enter(void) { + cpuidle_use_deepest_state(true); cpuidle_resume(); wait_event(suspend_freeze_wait_head, suspend_freeze_wake); cpuidle_pause(); + cpuidle_use_deepest_state(false); } void freeze_wake(void) diff --git a/kernel/sched/idle.c b/kernel/sched/idle.c index 8f4390a079c..a8f12247ce7 100644 --- a/kernel/sched/idle.c +++ b/kernel/sched/idle.c @@ -101,19 +101,13 @@ static int cpuidle_idle_call(void) rcu_idle_enter(); /* - * Check if the cpuidle framework is ready, otherwise fallback - * to the default arch specific idle method + * Ask the cpuidle framework to choose a convenient idle state. + * Fall back to the default arch specific idle method on errors. */ - ret = cpuidle_enabled(drv, dev); - - if (!ret) { - /* - * Ask the governor to choose an idle state it thinks - * it is convenient to go to. There is *always* a - * convenient idle state - */ - next_state = cpuidle_select(drv, dev); + next_state = cpuidle_select(drv, dev); + ret = next_state; + if (ret >= 0) { /* * The idle task must be scheduled, it is pointless to * go to idle, just update no idle residency and get @@ -140,7 +134,7 @@ static int cpuidle_idle_call(void) CLOCK_EVT_NOTIFY_BROADCAST_ENTER, &dev->cpu); - if (!ret) { + if (ret >= 0) { trace_cpu_idle_rcuidle(next_state, dev->cpu); /* @@ -175,7 +169,7 @@ static int cpuidle_idle_call(void) * We can't use the cpuidle framework, let's use the default * idle routine */ - if (ret) + if (ret < 0) arch_cpu_idle(); __current_set_polling(); |