diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/clockchips.h | 4 | ||||
| -rw-r--r-- | include/linux/cpuidle.h | 34 |
2 files changed, 34 insertions, 4 deletions
diff --git a/include/linux/clockchips.h b/include/linux/clockchips.h index 8ae9a95ebf5b..9aac31d856f3 100644 --- a/include/linux/clockchips.h +++ b/include/linux/clockchips.h @@ -211,7 +211,7 @@ extern int tick_receive_broadcast(void); extern void tick_setup_hrtimer_broadcast(void); extern int tick_check_broadcast_expired(void); # else -static inline int tick_check_broadcast_expired(void) { return 0; } +static __always_inline int tick_check_broadcast_expired(void) { return 0; } static inline void tick_setup_hrtimer_broadcast(void) { } # endif @@ -219,7 +219,7 @@ static inline void tick_setup_hrtimer_broadcast(void) { } static inline void clockevents_suspend(void) { } static inline void clockevents_resume(void) { } -static inline int tick_check_broadcast_expired(void) { return 0; } +static __always_inline int tick_check_broadcast_expired(void) { return 0; } static inline void tick_setup_hrtimer_broadcast(void) { } #endif /* !CONFIG_GENERIC_CLOCKEVENTS */ diff --git a/include/linux/cpuidle.h b/include/linux/cpuidle.h index 0ddc11e44302..630c879143c7 100644 --- a/include/linux/cpuidle.h +++ b/include/linux/cpuidle.h @@ -14,6 +14,7 @@ #include <linux/percpu.h> #include <linux/list.h> #include <linux/hrtimer.h> +#include <linux/context_tracking.h> #define CPUIDLE_STATE_MAX 10 #define CPUIDLE_NAME_LEN 16 @@ -115,6 +116,35 @@ struct cpuidle_device { DECLARE_PER_CPU(struct cpuidle_device *, cpuidle_devices); DECLARE_PER_CPU(struct cpuidle_device, cpuidle_dev); +static __always_inline void ct_cpuidle_enter(void) +{ + lockdep_assert_irqs_disabled(); + /* + * Idle is allowed to (temporary) enable IRQs. It + * will return with IRQs disabled. + * + * Trace IRQs enable here, then switch off RCU, and have + * arch_cpu_idle() use raw_local_irq_enable(). Note that + * ct_idle_enter() relies on lockdep IRQ state, so switch that + * last -- this is very similar to the entry code. + */ + trace_hardirqs_on_prepare(); + lockdep_hardirqs_on_prepare(); + instrumentation_end(); + ct_idle_enter(); + lockdep_hardirqs_on(_RET_IP_); +} + +static __always_inline void ct_cpuidle_exit(void) +{ + /* + * Carefully undo the above. + */ + lockdep_hardirqs_off(_RET_IP_); + ct_idle_exit(); + instrumentation_begin(); +} + /**************************** * CPUIDLE DRIVER INTERFACE * ****************************/ @@ -289,9 +319,9 @@ extern s64 cpuidle_governor_latency_req(unsigned int cpu); if (!is_retention) \ __ret = cpu_pm_enter(); \ if (!__ret) { \ - ct_idle_enter(); \ + ct_cpuidle_enter(); \ __ret = low_level_idle_enter(state); \ - ct_idle_exit(); \ + ct_cpuidle_exit(); \ if (!is_retention) \ cpu_pm_exit(); \ } \ |