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mm/vmstat.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/20200905084008.15748-1-linmiaohe@huawei.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Miaohe Lin 2020-10-15 20:07:36 -07:00 committed by Linus Torvalds
parent 11c9c7edae
commit 406100762a
1 changed files with 4 additions and 4 deletions
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8
mm/vmstat.c
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@ -325,7 +325,7 @@ void __mod_zone_page_state(struct zone *zone, enum zone_stat_item item,
t = __this_cpu_read(pcp->stat_threshold); 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); zone_page_state_add(x, zone, item);
x = 0; x = 0;
} }
@ -350,7 +350,7 @@ void __mod_node_page_state(struct pglist_data *pgdat, enum node_stat_item item,
t = __this_cpu_read(pcp->stat_threshold); 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); node_page_state_add(x, pgdat, item);
x = 0; x = 0;
} }
@ -511,7 +511,7 @@ static inline void mod_zone_state(struct zone *zone,
o = this_cpu_read(*p); o = this_cpu_read(*p);
n = delta + o; n = delta + o;
if (n > t || n < -t) { if (abs(n) > t) {
int os = overstep_mode * (t >> 1) ; int os = overstep_mode * (t >> 1) ;
/* Overflow must be added to zone counters */ /* Overflow must be added to zone counters */
@ -573,7 +573,7 @@ static inline void mod_node_state(struct pglist_data *pgdat,
o = this_cpu_read(*p); o = this_cpu_read(*p);
n = delta + o; n = delta + o;
if (n > t || n < -t) { if (abs(n) > t) {
int os = overstep_mode * (t >> 1) ; int os = overstep_mode * (t >> 1) ;
/* Overflow must be added to node counters */ /* Overflow must be added to node counters */