Commit 40610076 authored by Miaohe Lin's avatar Miaohe Lin Committed by Linus Torvalds
Browse files

mm/vmstat.c: use helper macro abs() 



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

Signed-off-by: default avatarMiaohe Lin <linmiaohe@huawei.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Reviewed-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Link: https://lkml.kernel.org/r/20200905084008.15748-1-linmiaohe@huawei.com


Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 11c9c7ed

mm/vmstat.c

+4 −4
Original line number Diff line number Diff line
@@ -325,7 +325,7 @@ 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;

	}
@@ -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);



	if (unlikely(x > t || x < -t)) {

	if (unlikely(abs(x) > t)) {

		node_page_state_add(x, pgdat, item);

		x = 0;

	}
@@ -511,7 +511,7 @@ 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 */
@@ -573,7 +573,7 @@ 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 */