From: Shaohua Li <shaohua.li@intel.com>
Date: Fri, 11 Nov 2011 06:54:14 +0000 (+0800)
Subject: slub: add missed accounting
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=b13683d1cc14d1dd30b8e20f3ebea3f814ad029f;p=mv-sheeva.git

slub: add missed accounting

With per-cpu partial list, slab is added to partial list first and then moved
to node list. The __slab_free() code path for add/remove_partial is almost
deprecated(except for slub debug). But we forget to account add/remove_partial
when move per-cpu partial pages to node list, so the statistics for such events
are always 0. Add corresponding accounting.

This is against the patch "slub: use correct parameter to add a page to
partial list tail"

Acked-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
---

diff --git a/mm/slub.c b/mm/slub.c
index 4056d29e661..8284a206f48 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -1901,11 +1901,14 @@ static void unfreeze_partials(struct kmem_cache *s)
 			}
 
 			if (l != m) {
-				if (l == M_PARTIAL)
+				if (l == M_PARTIAL) {
 					remove_partial(n, page);
-				else
+					stat(s, FREE_REMOVE_PARTIAL);
+				} else {
 					add_partial(n, page,
 						DEACTIVATE_TO_TAIL);
+					stat(s, FREE_ADD_PARTIAL);
+				}
 
 				l = m;
 			}