diff mbox series

[022/181] mm/slub: fix missing ALLOC_SLOWPATH stat when bulk alloc

Message ID 20201013234843.Wq-xPj29u%akpm@linux-foundation.org (mailing list archive)
State New, archived
Headers show
Series [001/181] compiler-clang: add build check for clang 10.0.1 | expand

Commit Message

Andrew Morton Oct. 13, 2020, 11:48 p.m. UTC 
From: Abel Wu <wuyun.wu@huawei.com>
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@huawei.com
Signed-off-by: Abel Wu <wuyun.wu@huawei.com>
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>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/slub.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
diff mbox series

Patch

--- a/mm/slub.c~mm-slub-fix-missing-alloc_slowpath-stat-when-bulk-alloc
+++ a/mm/slub.c
@@ -2661,6 +2661,8 @@  static void *___slab_alloc(struct kmem_c
 	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);