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lib/percpu_counter.c: use helper macro abs()

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Use helper macro abs() to simplify the "x >= t || x <= -t" cmp.

Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Link: https://lkml.kernel.org/r/20200927122746.5964-1-linmiaohe@huawei.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Miaohe Lin 2020-10-15 20:11:28 -07:00 committed by Linus Torvalds
parent 6ed9b92e29
commit 1d339638a9
1 changed files with 1 additions and 1 deletions
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lib/percpu_counter.c
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@ -85,7 +85,7 @@ void percpu_counter_add_batch(struct percpu_counter *fbc, s64 amount, s32 batch)
preempt_disable();
count = __this_cpu_read(*fbc->counters) + amount;
if (count >= batch || count <= -batch) {
if (abs(count) >= batch) {
unsigned long flags;
raw_spin_lock_irqsave(&fbc->lock, flags);
fbc->count += count;