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authorMel Gorman <mgorman@techsingularity.net>2016-05-19 17:13:27 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2016-05-19 19:12:14 -0700
commit060e74173f292fb3e0398b3dca8765568d195ff1 (patch)
tree2b7a8c91c724ee6e0c256cdc0e71b919fcc56712 /mm/vmstat.c
parentb9f00e147f27d86691f7f52a3c8126d25432477c (diff)
downloadop-kernel-dev-060e74173f292fb3e0398b3dca8765568d195ff1.zip
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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 'mm/vmstat.c')
-rw-r--r--mm/vmstat.c29
1 files changed, 0 insertions, 29 deletions
diff --git a/mm/vmstat.c b/mm/vmstat.c
index d585de2..f1a73bf 100644
--- a/mm/vmstat.c
+++ b/mm/vmstat.c
@@ -570,35 +570,6 @@ void drain_zonestat(struct zone *zone, struct per_cpu_pageset *pset)
#ifdef CONFIG_NUMA
/*
- * zonelist = the list of zones passed to the allocator
- * z = the zone from which the allocation occurred.
- *
- * Must be called with interrupts disabled.
- *
- * When __GFP_OTHER_NODE is set assume the node of the preferred
- * zone is the local node. This is useful for daemons who allocate
- * memory on behalf of other processes.
- */
-void zone_statistics(struct zone *preferred_zone, struct zone *z, gfp_t flags)
-{
- int local_nid = numa_node_id();
- enum zone_stat_item local_stat = NUMA_LOCAL;
-
- if (unlikely(flags & __GFP_OTHER_NODE)) {
- local_stat = NUMA_OTHER;
- local_nid = preferred_zone->node;
- }
-
- if (z->node == local_nid) {
- __inc_zone_state(z, NUMA_HIT);
- __inc_zone_state(z, local_stat);
- } else {
- __inc_zone_state(z, NUMA_MISS);
- __inc_zone_state(preferred_zone, NUMA_FOREIGN);
- }
-}
-
-/*
* Determine the per node value of a stat item.
*/
unsigned long node_page_state(int node, enum zone_stat_item item)
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