The patch titled
Subject: mm/slub: fix missing ALLOC_SLOWPATH stat when bulk alloc
has been added to the -mm tree. Its filename is
mm-slub-fix-missing-alloc_slowpath-stat-when-bulk-alloc.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-slub-fix-missing-alloc_slowpath-stat-when-bulk-alloc.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-slub-fix-missing-alloc_slowpath-stat-when-bulk-alloc.patch
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------------------------------------------------------
From: Abel Wu <wuyun.wu@xxxxxxxxxx>
Subject: mm/slub: fix missing ALLOC_SLOWPATH stat when bulk alloc
The ALLOC_SLOWPATH statistics is missing in bulk allocation now. Fix it
by doing statistics in alloc slow path.
Link: http://lkml.kernel.org/r/20200811022427.1363-1-wuyun.wu@xxxxxxxxxx
Signed-off-by: Abel Wu <wuyun.wu@xxxxxxxxxx>
Reviewed-by: Pekka Enberg <penberg@xxxxxxxxxx>
Acked-by: David Rientjes <rientjes@xxxxxxxxxx>
Cc: Christoph Lameter <cl@xxxxxxxxx>
Cc: Joonsoo Kim <iamjoonsoo.kim@xxxxxxx>
Cc: Hewenliang <hewenliang4@xxxxxxxxxx>
Cc: Hu Shiyuan <hushiyuan@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/slub.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/mm/slub.c~mm-slub-fix-missing-alloc_slowpath-stat-when-bulk-alloc
+++ a/mm/slub.c
@@ -2666,6 +2666,8 @@ static void *___slab_alloc(struct kmem_c
void *freelist;
struct page *page;
+ stat(s, ALLOC_SLOWPATH);
+
page = c->page;
if (!page) {
/*
@@ -2855,7 +2857,6 @@ redo:
page = c->page;
if (unlikely(!object || !node_match(page, node))) {
object = __slab_alloc(s, gfpflags, node, addr, c);
- stat(s, ALLOC_SLOWPATH);
} else {
void *next_object = get_freepointer_safe(s, object);
_
Patches currently in -mm which might be from wuyun.wu@xxxxxxxxxx are
mm-slub-branch-optimization-in-free-slowpath.patch
mm-slub-fix-missing-alloc_slowpath-stat-when-bulk-alloc.patch
