diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/percpu_counter.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/lib/percpu_counter.c b/lib/percpu_counter.c index f7ac68c4c375..c9708db9b8d3 100644 --- a/lib/percpu_counter.c +++ b/lib/percpu_counter.c @@ -14,6 +14,20 @@ static LIST_HEAD(percpu_counters); static DEFINE_MUTEX(percpu_counters_lock); #endif +void percpu_counter_set(struct percpu_counter *fbc, s64 amount) +{ + int cpu; + + spin_lock(&fbc->lock); + for_each_possible_cpu(cpu) { + s32 *pcount = per_cpu_ptr(fbc->counters, cpu); + *pcount = 0; + } + fbc->count = amount; + spin_unlock(&fbc->lock); +} +EXPORT_SYMBOL(percpu_counter_set); + void __percpu_counter_add(struct percpu_counter *fbc, s64 amount, s32 batch) { s64 count; |