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authorChristoph Lameter <cl@linux.com>2011-04-15 14:48:15 -0500
committerPekka Enberg <penberg@kernel.org>2011-04-17 14:03:20 +0300
commitdc1fb7f43636754a4d06f7bdb8ea3269a7d71d6d (patch)
tree85d7cd2cc81d89805b9d3cc3c0ec89b5f6c357f9 /mm
parent01ad8a7bc226ddbbf90e4c15167d9e31a8d02930 (diff)
downloadop-kernel-dev-dc1fb7f43636754a4d06f7bdb8ea3269a7d71d6d.zip
op-kernel-dev-dc1fb7f43636754a4d06f7bdb8ea3269a7d71d6d.tar.gz
slub: Move node determination out of hotpath
If the node does not change then there is no need to recalculate the node from the page struct. So move the node determination into the places where we acquire a new slab page. Signed-off-by: Christoph Lameter <cl@linux.com> Signed-off-by: Pekka Enberg <penberg@kernel.org>
Diffstat (limited to 'mm')
-rw-r--r--mm/slub.c9
1 files changed, 5 insertions, 4 deletions
diff --git a/mm/slub.c b/mm/slub.c
index ab44368..301360b 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -1828,7 +1828,6 @@ load_freelist:
c->freelist = get_freepointer(s, object);
page->inuse = page->objects;
page->freelist = NULL;
- c->node = page_to_nid(page);
unlock_out:
slab_unlock(page);
@@ -1845,8 +1844,10 @@ another_slab:
new_slab:
page = get_partial(s, gfpflags, node);
if (page) {
- c->page = page;
stat(s, ALLOC_FROM_PARTIAL);
+load_from_page:
+ c->node = page_to_nid(page);
+ c->page = page;
goto load_freelist;
}
@@ -1867,8 +1868,8 @@ new_slab:
slab_lock(page);
__SetPageSlubFrozen(page);
- c->page = page;
- goto load_freelist;
+
+ goto load_from_page;
}
if (!(gfpflags & __GFP_NOWARN) && printk_ratelimit())
slab_out_of_memory(s, gfpflags, node);
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