* [PATCH] mm: vmstat: Use helper macro abs()
@ 2020-09-05 8:40 Miaohe Lin
0 siblings, 0 replies; only message in thread
From: Miaohe Lin @ 2020-09-05 8:40 UTC (permalink / raw)
To: akpm; +Cc: linux-mm, linux-kernel, linmiaohe
Use helper macro abs() to simplify the "x > t || x < -t" cmp.
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
---
mm/vmstat.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/mm/vmstat.c b/mm/vmstat.c
index 06fd13ebc2b8..648c2d6ddce2 100644
--- a/mm/vmstat.c
+++ b/mm/vmstat.c
@@ -329,7 +329,7 @@ void __mod_zone_page_state(struct zone *zone, enum zone_stat_item item,
t = __this_cpu_read(pcp->stat_threshold);
- if (unlikely(x > t || x < -t)) {
+ if (unlikely(abs(x) > t)) {
zone_page_state_add(x, zone, item);
x = 0;
}
@@ -354,7 +354,7 @@ void __mod_node_page_state(struct pglist_data *pgdat, enum node_stat_item item,
t = __this_cpu_read(pcp->stat_threshold);
- if (unlikely(x > t || x < -t)) {
+ if (unlikely(abs(x) > t)) {
node_page_state_add(x, pgdat, item);
x = 0;
}
@@ -515,7 +515,7 @@ static inline void mod_zone_state(struct zone *zone,
o = this_cpu_read(*p);
n = delta + o;
- if (n > t || n < -t) {
+ if (abs(n) > t) {
int os = overstep_mode * (t >> 1) ;
/* Overflow must be added to zone counters */
@@ -577,7 +577,7 @@ static inline void mod_node_state(struct pglist_data *pgdat,
o = this_cpu_read(*p);
n = delta + o;
- if (n > t || n < -t) {
+ if (abs(n) > t) {
int os = overstep_mode * (t >> 1) ;
/* Overflow must be added to node counters */
--
2.19.1
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2020-09-05 8:40 [PATCH] mm: vmstat: Use helper macro abs() Miaohe Lin
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