From: Christoph Lameter <cl@linux.com>
To: Pekka Enberg <penberg@kernel.org>
Cc: Joonsoo Kim <js1304@gmail.com>,
Glauber Costa <glommer@parallels.com>,
linux-mm@kvack.org, David Rientjes <rientjes@google.com>
Subject: C13 [14/14] Move kmem_cache refcounting to common code
Date: Fri, 24 Aug 2012 16:17:38 +0000 [thread overview]
Message-ID: <00000139596cab0a-61fcd4d7-52b5-4e16-89de-57c8df4dc8a4-000000@email.amazonses.com> (raw)
In-Reply-To: <20120824160903.168122683@linux.com>
Get rid of the refcount stuff in the allocators and do that
part of kmem_cache management in the common code.
Signed-off-by: Christoph Lameter <cl@linux.com>
---
mm/slab.c | 1 -
mm/slab_common.c | 5 +++--
mm/slob.c | 2 --
mm/slub.c | 1 -
4 files changed, 3 insertions(+), 6 deletions(-)
Index: linux/mm/slab.c
===================================================================
--- linux.orig/mm/slab.c 2012-08-22 10:27:54.838388363 -0500
+++ linux/mm/slab.c 2012-08-22 10:28:31.658969127 -0500
@@ -2543,7 +2543,6 @@ __kmem_cache_create (struct kmem_cache *
*/
BUG_ON(ZERO_OR_NULL_PTR(cachep->slabp_cache));
}
- cachep->refcount = 1;
err = setup_cpu_cache(cachep, gfp);
if (err) {
Index: linux/mm/slab_common.c
===================================================================
--- linux.orig/mm/slab_common.c 2012-08-22 10:27:54.858388583 -0500
+++ linux/mm/slab_common.c 2012-08-22 10:28:31.658969127 -0500
@@ -125,11 +125,12 @@ struct kmem_cache *kmem_cache_create(con
}
err = __kmem_cache_create(s, flags);
- if (!err)
+ if (!err) {
+ s->refcount = 1;
list_add(&s->list, &slab_caches);
- else {
+ } else {
kfree(s->name);
kmem_cache_free(kmem_cache, s);
}
Index: linux/mm/slob.c
===================================================================
--- linux.orig/mm/slob.c 2012-08-22 10:27:54.846388442 -0500
+++ linux/mm/slob.c 2012-08-22 10:28:31.658969127 -0500
@@ -524,8 +524,6 @@ int __kmem_cache_create(struct kmem_cach
if (c->align < align)
c->align = align;
- kmemleak_alloc(c, sizeof(struct kmem_cache), 1, GFP_KERNEL);
- c->refcount = 1;
return 0;
}
Index: linux/mm/slub.c
===================================================================
--- linux.orig/mm/slub.c 2012-08-22 10:27:54.870388814 -0500
+++ linux/mm/slub.c 2012-08-22 10:28:31.662969186 -0500
@@ -3093,7 +3093,6 @@ static int kmem_cache_open(struct kmem_c
else
s->cpu_partial = 30;
- s->refcount = 1;
#ifdef CONFIG_NUMA
s->remote_node_defrag_ratio = 1000;
#endif
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next prev parent reply other threads:[~2012-08-24 16:17 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20120824160903.168122683@linux.com>
2012-08-24 16:10 ` C13 [05/14] Extract a common function for kmem_cache_destroy Christoph Lameter
2012-09-03 14:41 ` Glauber Costa
2012-09-03 15:26 ` Glauber Costa
2012-09-04 22:58 ` Christoph Lameter
2012-08-24 16:12 ` C13 [07/14] Move freeing of kmem_cache structure to common code Christoph Lameter
2012-09-03 14:51 ` Glauber Costa
2012-08-24 16:12 ` C13 [08/14] Get rid of __kmem_cache_destroy Christoph Lameter
2012-09-03 14:58 ` Glauber Costa
2012-09-04 22:39 ` Christoph Lameter
2012-09-05 8:25 ` Glauber Costa
2012-08-24 16:17 ` C13 [12/14] Move kmem_cache allocations into common code Christoph Lameter
2012-09-03 15:24 ` Glauber Costa
2012-08-24 16:17 ` C13 [11/14] Move sysfs_slab_add to common Christoph Lameter
2012-09-03 15:09 ` Glauber Costa
2012-08-24 16:17 ` C13 [03/14] Improve error handling in kmem_cache_create Christoph Lameter
2012-09-03 14:30 ` Glauber Costa
2012-08-24 16:17 ` C13 [04/14] Move list_add() to slab_common.c Christoph Lameter
2012-08-24 16:17 ` C13 [06/14] Always use the name "kmem_cache" for the slab cache with the kmem_cache structure Christoph Lameter
2012-08-24 16:17 ` C13 [10/14] Do slab aliasing call from common code Christoph Lameter
2012-08-24 16:17 ` C13 [09/14] Move duping of slab name to slab_common.c Christoph Lameter
2012-09-03 15:02 ` Glauber Costa
2012-08-24 16:17 ` C13 [01/14] slub: Add debugging to verify correct cache use on kmem_cache_free() Christoph Lameter
2012-09-03 14:26 ` Glauber Costa
2012-08-24 16:17 ` Christoph Lameter [this message]
2012-09-03 15:12 ` C13 [14/14] Move kmem_cache refcounting to common code Glauber Costa
2012-09-04 19:10 ` Christoph Lameter
2012-08-24 16:17 ` C13 [02/14] slub: Use kmem_cache for the kmem_cache structure Christoph Lameter
2012-09-03 14:27 ` Glauber Costa
2012-08-24 16:17 ` C13 [13/14] Shrink __kmem_cache_create() parameter lists Christoph Lameter
2012-09-03 15:33 ` Glauber Costa
2012-09-03 15:35 ` Glauber Costa
2012-09-04 22:48 ` Christoph Lameter
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