diff options
Diffstat (limited to 'lib/flex_proportions.c')
| -rw-r--r-- | lib/flex_proportions.c | 12 |
1 files changed, 4 insertions, 8 deletions
diff --git a/lib/flex_proportions.c b/lib/flex_proportions.c index 53e7eb1dd76c..83332fefa6f4 100644 --- a/lib/flex_proportions.c +++ b/lib/flex_proportions.c @@ -63,18 +63,14 @@ void fprop_global_destroy(struct fprop_global *p) */ 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; - } + preempt_disable_nested(); write_seqcount_begin(&p->sequence); if (periods < 64) events -= events >> periods; @@ -82,7 +78,7 @@ bool fprop_new_period(struct fprop_global *p, int periods) percpu_counter_add(&p->events, -events); p->period += periods; write_seqcount_end(&p->sequence); - local_irq_restore(flags); + preempt_enable_nested(); return true; } |