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Merge branch 'for-4.11' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu

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Pull percpu update from Tejun Heo:
 "This contains just one minor cleanup patch which gets rid of an
  unnecessary irqsave/restore in the cpu dead callback"

* 'for-4.11' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu:
  percpu_counter: percpu_counter_hotcpu_callback() cleanup
This commit is contained in:
Linus Torvalds 2017-02-27 21:39:19 -08:00
commit fb15a78210
1 changed files with 2 additions and 3 deletions
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5
lib/percpu_counter.c
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@ -176,13 +176,12 @@ static int percpu_counter_cpu_dead(unsigned int cpu)
spin_lock_irq(&percpu_counters_lock);
list_for_each_entry(fbc, &percpu_counters, list) {
s32 *pcount;
unsigned long flags;
raw_spin_lock_irqsave(&fbc->lock, flags);
raw_spin_lock(&fbc->lock);
pcount = per_cpu_ptr(fbc->counters, cpu);
fbc->count += *pcount;
*pcount = 0;
raw_spin_unlock_irqrestore(&fbc->lock, flags);
raw_spin_unlock(&fbc->lock);
}
spin_unlock_irq(&percpu_counters_lock);
#endif