diff options
Diffstat (limited to 'kernel/timer.c')
| -rw-r--r-- | kernel/timer.c | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/kernel/timer.c b/kernel/timer.c index 7fada69..a61c093 100644 --- a/kernel/timer.c +++ b/kernel/timer.c @@ -1326,18 +1326,21 @@ static unsigned long cmp_next_hrtimer_event(unsigned long now, unsigned long get_next_timer_interrupt(unsigned long now) { struct tvec_base *base = __this_cpu_read(tvec_bases); - unsigned long expires; + unsigned long expires = now + NEXT_TIMER_MAX_DELTA; /* * Pretend that there is no timer pending if the cpu is offline. * Possible pending timers will be migrated later to an active cpu. */ if (cpu_is_offline(smp_processor_id())) - return now + NEXT_TIMER_MAX_DELTA; + return expires; + spin_lock(&base->lock); - if (time_before_eq(base->next_timer, base->timer_jiffies)) - base->next_timer = __next_timer_interrupt(base); - expires = base->next_timer; + if (base->active_timers) { + if (time_before_eq(base->next_timer, base->timer_jiffies)) + base->next_timer = __next_timer_interrupt(base); + expires = base->next_timer; + } spin_unlock(&base->lock); if (time_before_eq(expires, now)) |
