*/
bool fprop_new_period(struct fprop_global *p, int periods)
{
- s64 events;
- unsigned long flags;
+ s64 events = percpu_counter_sum(&p->events);
- local_irq_save(flags);
- events = percpu_counter_sum(&p->events);
/*
* Don't do anything if there are no events.
*/
- if (events <= 1) {
- local_irq_restore(flags);
+ if (events <= 1)
return false;
- }
write_seqcount_begin(&p->sequence);
if (periods < 64)
events -= events >> periods;
percpu_counter_add(&p->events, -events);
p->period += periods;
write_seqcount_end(&p->sequence);
- local_irq_restore(flags);
return true;
}