* [PATCH] percpu_counter: Use helper macro abs()
@ 2020-09-27 12:27 Miaohe Lin
0 siblings, 0 replies; only message in thread
From: Miaohe Lin @ 2020-09-27 12:27 UTC (permalink / raw)
To: akpm, feng.tang; +Cc: linux-kernel, linmiaohe
Use helper macro abs() to simplify the "x >= t || x <= -t" cmp.
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
---
lib/percpu_counter.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/lib/percpu_counter.c b/lib/percpu_counter.c
index a2345de90e93..35aba0bd2bed 100644
--- a/lib/percpu_counter.c
+++ b/lib/percpu_counter.c
@@ -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;
--
2.19.1
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2020-09-27 12:27 [PATCH] percpu_counter: Use helper macro abs() Miaohe Lin
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