diff options
Diffstat (limited to 'kernel/time/hrtimer.c')
| -rw-r--r-- | kernel/time/hrtimer.c | 26 |
1 files changed, 6 insertions, 20 deletions
diff --git a/kernel/time/hrtimer.c b/kernel/time/hrtimer.c index 5a624f9c8408..a9ab67f3e5d5 100644 --- a/kernel/time/hrtimer.c +++ b/kernel/time/hrtimer.c @@ -154,26 +154,21 @@ struct hrtimer_clock_base *lock_hrtimer_base(const struct hrtimer *timer, } /* - * With HIGHRES=y we do not migrate the timer when it is expiring - * before the next event on the target cpu because we cannot reprogram - * the target cpu hardware and we would cause it to fire late. + * We do not migrate the timer when it is expiring before the next + * event on the target cpu. When high resolution is enabled, we cannot + * reprogram the target cpu hardware and we would cause it to fire + * late. To keep it simple, we handle the high resolution enabled and + * disabled case similar. * * Called with cpu_base->lock of target cpu held. */ static int hrtimer_check_target(struct hrtimer *timer, struct hrtimer_clock_base *new_base) { -#ifdef CONFIG_HIGH_RES_TIMERS ktime_t expires; - if (!new_base->cpu_base->hres_active) - return 0; - expires = ktime_sub(hrtimer_get_expires(timer), new_base->offset); return expires <= new_base->cpu_base->expires_next; -#else - return 0; -#endif } static inline @@ -657,14 +652,6 @@ static void hrtimer_reprogram(struct hrtimer *timer, } /* - * Initialize the high resolution related parts of cpu_base - */ -static inline void hrtimer_init_hres(struct hrtimer_cpu_base *base) -{ - base->expires_next = KTIME_MAX; -} - -/* * Retrigger next event is called after clock was set * * Called with interrupts disabled via on_each_cpu() @@ -729,7 +716,6 @@ static inline int hrtimer_reprogram(struct hrtimer *timer, { return 0; } -static inline void hrtimer_init_hres(struct hrtimer_cpu_base *base) { } static inline void retrigger_next_event(void *arg) { } #endif /* CONFIG_HIGH_RES_TIMERS */ @@ -1599,7 +1585,7 @@ int hrtimers_prepare_cpu(unsigned int cpu) cpu_base->cpu = cpu; cpu_base->hres_active = 0; - hrtimer_init_hres(cpu_base); + cpu_base->expires_next = KTIME_MAX; return 0; } |