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| author |   Mel Gorman <mgorman@techsingularity.net> | 2016-05-19 17:13:27 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2016-05-19 19:12:14 -0700 |
| commit | 060e74173f292fb3e0398b3dca8765568d195ff1 (patch) | |
| tree | 2b7a8c91c724ee6e0c256cdc0e71b919fcc56712 /include | |
| parent | mm, page_alloc: reduce branches in zone_statistics (diff) | |
| download | linux-dev-060e74173f292fb3e0398b3dca8765568d195ff1.tar.xz linux-dev-060e74173f292fb3e0398b3dca8765568d195ff1.zip | |
mm, page_alloc: inline zone_statistics
zone_statistics has one call-site but it's a public function. Make it
static and inline.
The performance difference on a page allocator microbenchmark is;
4.6.0-rc2 4.6.0-rc2
statbranch-v1r20 statinline-v1r20
Min alloc-odr0-1 419.00 ( 0.00%) 412.00 ( 1.67%)
Min alloc-odr0-2 305.00 ( 0.00%) 301.00 ( 1.31%)
Min alloc-odr0-4 250.00 ( 0.00%) 247.00 ( 1.20%)
Min alloc-odr0-8 219.00 ( 0.00%) 215.00 ( 1.83%)
Min alloc-odr0-16 203.00 ( 0.00%) 199.00 ( 1.97%)
Min alloc-odr0-32 195.00 ( 0.00%) 191.00 ( 2.05%)
Min alloc-odr0-64 191.00 ( 0.00%) 187.00 ( 2.09%)
Min alloc-odr0-128 189.00 ( 0.00%) 185.00 ( 2.12%)
Min alloc-odr0-256 198.00 ( 0.00%) 193.00 ( 2.53%)
Min alloc-odr0-512 210.00 ( 0.00%) 207.00 ( 1.43%)
Min alloc-odr0-1024 216.00 ( 0.00%) 213.00 ( 1.39%)
Min alloc-odr0-2048 221.00 ( 0.00%) 220.00 ( 0.45%)
Min alloc-odr0-4096 227.00 ( 0.00%) 226.00 ( 0.44%)
Min alloc-odr0-8192 232.00 ( 0.00%) 229.00 ( 1.29%)
Min alloc-odr0-16384 232.00 ( 0.00%) 229.00 ( 1.29%)
Signed-off-by: Mel Gorman <mgorman@techsingularity.net>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/vmstat.h | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/include/linux/vmstat.h b/include/linux/vmstat.h index 02fce415b3d9..d2da8e053210 100644 --- a/include/linux/vmstat.h +++ b/include/linux/vmstat.h @@ -163,12 +163,10 @@ static inline unsigned long zone_page_state_snapshot(struct zone *zone, #ifdef CONFIG_NUMA extern unsigned long node_page_state(int node, enum zone_stat_item item); -extern void zone_statistics(struct zone *, struct zone *, gfp_t gfp); #else #define node_page_state(node, item) global_page_state(item) -#define zone_statistics(_zl, _z, gfp) do { } while (0) #endif /* CONFIG_NUMA */ |