summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
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
parent01ad8a7bc226ddbbf90e4c15167d9e31a8d02930 (diff)
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>
-rw-r--r--mm/slub.c9
1 files changed, 5 insertions, 4 deletions
diff --git a/mm/slub.c b/mm/slub.c
index ab44368ed692..301360bc00c6 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);