From: Christoph Lameter <cl@linux.com>
To: Glauber Costa <glommer@parallels.com>
Cc: Pekka Enberg <penberg@kernel.org>,
linux-mm@kvack.org, David Rientjes <rientjes@google.com>,
Joonsoo Kim <js1304@gmail.com>
Subject: Common [18/19] Move kmem_cache refcounting to common code
Date: Thu, 02 Aug 2012 15:15:24 -0500 [thread overview]
Message-ID: <20120802201540.570017751@linux.com> (raw)
In-Reply-To: 20120802201506.266817615@linux.com
[-- Attachment #1: refcount_move --]
[-- Type: text/plain, Size: 2109 bytes --]
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>
Index: linux-2.6/mm/slab.c
===================================================================
--- linux-2.6.orig/mm/slab.c 2012-08-02 14:26:36.299565690 -0500
+++ linux-2.6/mm/slab.c 2012-08-02 14:37:42.671454099 -0500
@@ -2533,7 +2533,6 @@
*/
BUG_ON(ZERO_OR_NULL_PTR(cachep->slabp_cache));
}
- cachep->refcount = 1;
r = setup_cpu_cache(cachep, gfp);
if (r) {
Index: linux-2.6/mm/slab_common.c
===================================================================
--- linux-2.6.orig/mm/slab_common.c 2012-08-02 14:36:43.000000000 -0500
+++ linux-2.6/mm/slab_common.c 2012-08-02 14:40:37.686580855 -0500
@@ -111,11 +111,12 @@
}
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);
}
@@ -195,6 +196,7 @@
if (!r) {
list_add(&s->list, &slab_caches);
+ s->refcount = 1;
return s;
}
}
Index: linux-2.6/mm/slob.c
===================================================================
--- linux-2.6.orig/mm/slob.c 2012-08-02 14:26:36.000000000 -0500
+++ linux-2.6/mm/slob.c 2012-08-02 14:37:42.671454099 -0500
@@ -524,8 +524,6 @@
if (c->align < align)
c->align = align;
- kmemleak_alloc(c, sizeof(struct kmem_cache), 1, GFP_KERNEL);
- c->refcount = 1;
return 0;
}
Index: linux-2.6/mm/slub.c
===================================================================
--- linux-2.6.orig/mm/slub.c 2012-08-02 14:26:36.299565690 -0500
+++ linux-2.6/mm/slub.c 2012-08-02 14:37:42.675454385 -0500
@@ -3086,7 +3086,6 @@
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:[~2012-08-02 20:15 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-02 20:15 Common [00/19] Sl[auo]b: Common code rework V9 Christoph Lameter
2012-08-02 20:15 ` Common [01/19] slub: Add debugging to verify correct cache use on kmem_cache_free() Christoph Lameter
2012-08-02 20:37 ` David Rientjes
2012-08-02 20:42 ` Christoph Lameter
2012-08-02 20:47 ` David Rientjes
2012-08-03 13:45 ` Christoph Lameter
2012-08-02 20:15 ` Common [02/19] slub: Use kmem_cache for the kmem_cache structure Christoph Lameter
2012-08-02 20:52 ` David Rientjes
2012-08-03 14:07 ` Christoph Lameter
2012-08-03 13:20 ` Glauber Costa
2012-08-03 13:52 ` Christoph Lameter
2012-08-03 13:53 ` Glauber Costa
2012-08-03 14:02 ` Christoph Lameter
2012-08-02 20:15 ` Common [03/19] Rename oops label Christoph Lameter
2012-08-02 20:45 ` David Rientjes
2012-08-02 20:15 ` Common [04/19] Improve error handling in kmem_cache_create Christoph Lameter
2012-08-02 20:58 ` David Rientjes
2012-08-02 20:15 ` Common [05/19] Move list_add() to slab_common.c Christoph Lameter
2012-08-02 21:18 ` David Rientjes
2012-08-02 20:15 ` Common [06/19] Extract a common function for kmem_cache_destroy Christoph Lameter
2012-08-02 20:15 ` Common [07/19] Always use the name "kmem_cache" for the slab cache with the kmem_cache structure Christoph Lameter
2012-08-02 20:15 ` Common [08/19] Move freeing of kmem_cache structure to common code Christoph Lameter
2012-08-02 20:15 ` Common [09/19] Get rid of __kmem_cache_destroy Christoph Lameter
2012-08-02 20:15 ` Common [10/19] Move duping of slab name to slab_common.c Christoph Lameter
2012-08-02 20:15 ` Common [11/19] Do slab aliasing call from common code Christoph Lameter
2012-08-02 20:15 ` Common [12/19] Move sysfs_slab_add to common Christoph Lameter
2012-08-02 20:15 ` Common [13/19] slub: Use a statically allocated kmem_cache boot structure for bootstrap Christoph Lameter
2012-08-02 20:15 ` Common [14/19] slub: Introduce function for opening boot caches Christoph Lameter
2012-08-02 20:15 ` Common [15/19] create common create_kmalloc_cache() Christoph Lameter
2012-08-02 20:15 ` Common [16/19] Move kmem_cache allocations into common code Christoph Lameter
2012-08-02 20:15 ` Common [17/19] Shrink __kmem_cache_create() parameter lists Christoph Lameter
2012-08-02 20:15 ` Christoph Lameter [this message]
2012-08-02 20:15 ` Common [19/19] Common alignment code Christoph Lameter
2012-08-03 13:09 ` Common [00/19] Sl[auo]b: Common code rework V9 Glauber Costa
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