diff options
| author | Christoph Lameter <cl@linux.com> | 2012-09-05 00:18:32 +0000 |
|---|---|---|
| committer | Pekka Enberg <penberg@kernel.org> | 2012-09-05 12:00:36 +0300 |
| commit | 96d17b7be0a9849d381442030886211dbb2a7061 (patch) | |
| tree | b0d15ba6ffcc16732a76367fff194b8052da9fa2 /mm | |
| parent | cbb79694d592e9a76880f6ef6db8feccaeee1c32 (diff) | |
| download | linux-96d17b7be0a9849d381442030886211dbb2a7061.tar.bz2 | |
mm/sl[aou]b: Move sysfs_slab_add to common
Simplify locking by moving the slab_add_sysfs after all locks have been
dropped. Eases the upcoming move to provide sysfs support for all
allocators.
Reviewed-by: Glauber Costa <glommer@parallels.com>
Signed-off-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/slab.h | 3 | ||||
| -rw-r--r-- | mm/slab_common.c | 8 | ||||
| -rw-r--r-- | mm/slub.c | 15 |
3 files changed, 13 insertions, 13 deletions
diff --git a/mm/slab.h b/mm/slab.h index 84c28f451d2d..ec7b94429b99 100644 --- a/mm/slab.h +++ b/mm/slab.h @@ -39,10 +39,13 @@ struct kmem_cache *__kmem_cache_create(const char *name, size_t size, #ifdef CONFIG_SLUB struct kmem_cache *__kmem_cache_alias(const char *name, size_t size, size_t align, unsigned long flags, void (*ctor)(void *)); +extern int sysfs_slab_add(struct kmem_cache *s); #else static inline struct kmem_cache *__kmem_cache_alias(const char *name, size_t size, size_t align, unsigned long flags, void (*ctor)(void *)) { return NULL; } +static inline int sysfs_slab_add(struct kmem_cache *s) { return 0; } + #endif diff --git a/mm/slab_common.c b/mm/slab_common.c index adc42b01b25b..4f722084baed 100644 --- a/mm/slab_common.c +++ b/mm/slab_common.c @@ -152,6 +152,14 @@ out_locked: return NULL; } + if (s->refcount == 1) { + err = sysfs_slab_add(s); + if (err) + printk(KERN_WARNING "kmem_cache_create(%s) failed to" + " create sysfs entry. Error %d\n", + name, err); + } + return s; } EXPORT_SYMBOL(kmem_cache_create); diff --git a/mm/slub.c b/mm/slub.c index 64d445e7a27d..8d00fd78df23 100644 --- a/mm/slub.c +++ b/mm/slub.c @@ -202,12 +202,10 @@ struct track { enum track_item { TRACK_ALLOC, TRACK_FREE }; #ifdef CONFIG_SYSFS -static int sysfs_slab_add(struct kmem_cache *); static int sysfs_slab_alias(struct kmem_cache *, const char *); static void sysfs_slab_remove(struct kmem_cache *); #else -static inline int sysfs_slab_add(struct kmem_cache *s) { return 0; } static inline int sysfs_slab_alias(struct kmem_cache *s, const char *p) { return 0; } static inline void sysfs_slab_remove(struct kmem_cache *s) { } @@ -3955,16 +3953,7 @@ struct kmem_cache *__kmem_cache_create(const char *name, size_t size, if (s) { if (kmem_cache_open(s, name, size, align, flags, ctor)) { - int r; - - mutex_unlock(&slab_mutex); - r = sysfs_slab_add(s); - mutex_lock(&slab_mutex); - - if (!r) - return s; - - kmem_cache_close(s); + return s; } kmem_cache_free(kmem_cache, s); } @@ -5258,7 +5247,7 @@ static char *create_unique_id(struct kmem_cache *s) return name; } -static int sysfs_slab_add(struct kmem_cache *s) +int sysfs_slab_add(struct kmem_cache *s) { int err; const char *name; |