Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-12-27 13:22:23 +00:00
Code Issues Packages Projects Releases Wiki Activity

slub: Remove node check in slab_free

Browse Source 
We can set the page pointing in the percpu structure to
NULL to have the same effect as setting c->node to NUMA_NO_NODE.

Gets rid of one check in slab_free() that was only used for
forcing the slab_free to the slowpath for debugging.

We still need to set c->node to NUMA_NO_NODE to force the
slab_alloc() fastpath to the slowpath in case of debugging.

Signed-off-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
This commit is contained in:
Christoph Lameter 2011-05-17 16:29:31 -05:00 committed by Pekka Enberg
parent bd07d87fd4
commit 442b06bcea
1 changed files with 3 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
mm/slub.c
View File

@ -1881,6 +1881,8 @@ debug:
page->inuse++;
page->freelist = get_freepointer(s, object);
deactivate_slab(s, c);
c->page = NULL;
c->node = NUMA_NO_NODE;
goto unlock_out;
}
@ -2112,7 +2114,7 @@ redo:
tid = c->tid;
barrier();
if (likely(page == c->page && c->node != NUMA_NO_NODE)) {
if (likely(page == c->page)) {
set_freepointer(s, object, c->freelist);
if (unlikely(!this_cpu_cmpxchg_double(