Commit 9f986d99 authored Oct 13, 2020 by Abel Wu Committed by Linus Torvalds Oct 13, 2020

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.

Signed-off-by: Abel Wu <wuyun.wu@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Pekka Enberg <penberg@kernel.org>
Acked-by: David Rientjes <rientjes@google.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Hewenliang <hewenliang4@huawei.com>
Cc: Hu Shiyuan <hushiyuan@huawei.com>
Link: http://lkml.kernel.org/r/20200811022427.1363-1-wuyun.wu@huawei.com


Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

parent c270cf30

mm/slub.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -2661,6 +2661,8 @@ static void ___slab_alloc(struct kmem_cache s, gfp_t gfpflags, int node,
		void *freelist;
		struct page *page;

		stat(s, ALLOC_SLOWPATH);

		page = c->page;
		if (!page) {
		/*
		@@ -2850,7 +2852,6 @@ 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);

Admin message