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mm: vmstat: replace __count_zone_vm_events with a zone id equivalent

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This is partially a preparation patch for more vmstat work but it also
has the slight advantage that __count_zid_vm_events is cheaper to
calculate than __count_zone_vm_events().

Link: http://lkml.kernel.org/r/1467970510-21195-32-git-send-email-mgorman@techsingularity.net
Signed-off-by: Mel Gorman <mgorman@techsingularity.net>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Hillf Danton <hillf.zj@alibaba-inc.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Rik van Riel <riel@surriel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Mel Gorman 2016-07-28 15:46:56 -07:00 committed by Linus Torvalds
parent 3b8c0be43c
commit 16709d1de1
2 changed files with 3 additions and 4 deletions
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5
include/linux/vmstat.h
View file

@ -101,9 +101,8 @@ static inline void vm_events_fold_cpu(int cpu)
#define count_vm_vmacache_event(x) do {} while (0)
#endif
#define __count_zone_vm_events(item, zone, delta) \
__count_vm_events(item##_NORMAL - ZONE_NORMAL + \
zone_idx(zone), delta)
#define __count_zid_vm_events(item, zid, delta) \
__count_vm_events(item##_NORMAL - ZONE_NORMAL + zid, delta)
/*
* Zone and node-based page accounting with per cpu differentials.

2
mm/page_alloc.c
View file

@ -2616,7 +2616,7 @@ struct page *buffered_rmqueue(struct zone *preferred_zone,
get_pcppage_migratetype(page));
}
__count_zone_vm_events(PGALLOC, zone, 1 << order);
__count_zid_vm_events(PGALLOC, page_zonenum(page), 1 << order);
zone_statistics(preferred_zone, zone, gfp_flags);
local_irq_restore(flags);