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| author | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2015-05-10 01:18:46 +0200 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2015-05-14 21:37:47 +0200 |
| commit | 827a5aefc542b8fb17c00de06118e5cd0e3800f2 (patch) | |
| tree | 5728ec6fb8a0b67057e35d131ed2a2d7d67b2a69 /kernel/sched | |
| parent | faad38492814112e3e7ce94d90123bbe301fff33 (diff) | |
| download | linux-827a5aefc542b8fb17c00de06118e5cd0e3800f2.tar.bz2 | |
sched / idle: Call default_idle_call() from cpuidle_enter_state()
The check of the cpuidle_enter() return value against -EBUSY
made in call_cpuidle() will not be necessary any more if
cpuidle_enter_state() calls default_idle_call() directly when it
is about to return -EBUSY, so make that happen and eliminate the
check.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Preeti U Murthy <preeti@linux.vnet.ibm.com>
Tested-by: Preeti U Murthy <preeti@linux.vnet.ibm.com>
Tested-by: Sudeep Holla <sudeep.holla@arm.com>
Acked-by: Kevin Hilman <khilman@linaro.org>
Diffstat (limited to 'kernel/sched')
| -rw-r--r-- | kernel/sched/idle.c | 20 |
1 files changed, 7 insertions, 13 deletions
diff --git a/kernel/sched/idle.c b/kernel/sched/idle.c index 5d9f549fffa8..594275ed2620 100644 --- a/kernel/sched/idle.c +++ b/kernel/sched/idle.c @@ -76,12 +76,13 @@ void __weak arch_cpu_idle(void) local_irq_enable(); } -static void default_idle_call(void) +/** + * default_idle_call - Default CPU idle routine. + * + * To use when the cpuidle framework cannot be used. + */ +void default_idle_call(void) { - /* - * We can't use the cpuidle framework, let's use the default idle - * routine. - */ if (current_clr_polling_and_test()) local_irq_enable(); else @@ -91,8 +92,6 @@ static void default_idle_call(void) static int call_cpuidle(struct cpuidle_driver *drv, struct cpuidle_device *dev, int next_state) { - int entered_state; - /* Fall back to the default arch idle method on errors. */ if (next_state < 0) { default_idle_call(); @@ -114,12 +113,7 @@ static int call_cpuidle(struct cpuidle_driver *drv, struct cpuidle_device *dev, * This function will block until an interrupt occurs and will take * care of re-enabling the local interrupts */ - entered_state = cpuidle_enter(drv, dev, next_state); - - if (entered_state == -EBUSY) - default_idle_call(); - - return entered_state; + return cpuidle_enter(drv, dev, next_state); } /** |