diff options
Diffstat (limited to 'lib/flex_proportions.c')
| -rw-r--r-- | lib/flex_proportions.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/lib/flex_proportions.c b/lib/flex_proportions.c index e02a3883ae0..c785554f952 100644 --- a/lib/flex_proportions.c +++ b/lib/flex_proportions.c @@ -62,13 +62,18 @@ void fprop_global_destroy(struct fprop_global *p) */ bool fprop_new_period(struct fprop_global *p, int periods) { - u64 events = percpu_counter_sum(&p->events); + u64 events; + unsigned long flags; + local_irq_save(flags); + events = percpu_counter_sum(&p->events); /* * Don't do anything if there are no events. */ - if (events <= 1) + if (events <= 1) { + local_irq_restore(flags); return false; + } write_seqcount_begin(&p->sequence); if (periods < 64) events -= events >> periods; @@ -76,6 +81,7 @@ 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); return true; } |