diff options
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/sched/idle.c | 21 | ||||
| -rw-r--r-- | kernel/time/Kconfig | 5 |
2 files changed, 26 insertions, 0 deletions
diff --git a/kernel/sched/idle.c b/kernel/sched/idle.c index 31231925f1ec..31ad81153295 100644 --- a/kernel/sched/idle.c +++ b/kernel/sched/idle.c @@ -81,6 +81,25 @@ void __weak arch_cpu_idle(void) cpu_idle_force_poll = 1; } +#ifdef CONFIG_GENERIC_CLOCKEVENTS_BROADCAST_IDLE +DEFINE_STATIC_KEY_FALSE(arch_needs_tick_broadcast); + +static inline void cond_tick_broadcast_enter(void) +{ + if (static_branch_unlikely(&arch_needs_tick_broadcast)) + tick_broadcast_enter(); +} + +static inline void cond_tick_broadcast_exit(void) +{ + if (static_branch_unlikely(&arch_needs_tick_broadcast)) + tick_broadcast_exit(); +} +#else +static inline void cond_tick_broadcast_enter(void) { } +static inline void cond_tick_broadcast_exit(void) { } +#endif + /** * default_idle_call - Default CPU idle routine. * @@ -90,6 +109,7 @@ void __cpuidle default_idle_call(void) { instrumentation_begin(); if (!current_clr_polling_and_test()) { + cond_tick_broadcast_enter(); trace_cpu_idle(1, smp_processor_id()); stop_critical_timings(); @@ -99,6 +119,7 @@ void __cpuidle default_idle_call(void) start_critical_timings(); trace_cpu_idle(PWR_EVENT_EXIT, smp_processor_id()); + cond_tick_broadcast_exit(); } local_irq_enable(); instrumentation_end(); diff --git a/kernel/time/Kconfig b/kernel/time/Kconfig index bae8f11070be..fc3b1a06c981 100644 --- a/kernel/time/Kconfig +++ b/kernel/time/Kconfig @@ -39,6 +39,11 @@ config GENERIC_CLOCKEVENTS_BROADCAST bool depends on GENERIC_CLOCKEVENTS +# Handle broadcast in default_idle_call() +config GENERIC_CLOCKEVENTS_BROADCAST_IDLE + bool + depends on GENERIC_CLOCKEVENTS_BROADCAST + # Automatically adjust the min. reprogramming time for # clock event device config GENERIC_CLOCKEVENTS_MIN_ADJUST |