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authorJoonsoo Kim <iamjoonsoo.kim@lge.com>2014-10-09 15:26:00 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2014-10-09 22:25:50 -0400
commit07f361b2bee38896df8be17d8c3f8af3f3610606 (patch)
tree11a32316c31f5b85551cfce61a5d99d08e1af55d /mm/slab_common.c
parent3aa24f519e48e0db0ccf198d1b766a61d9463ce6 (diff)
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mm/slab_common: move kmem_cache definition to internal header
We don't need to keep kmem_cache definition in include/linux/slab.h if we don't need to inline kmem_cache_size(). According to my code inspection, this function is only called at lc_create() in lib/lru_cache.c which may be called at initialization phase of something, so we don't need to inline it. Therfore, move it to slab_common.c and move kmem_cache definition to internal header. After this change, we can change kmem_cache definition easily without full kernel build. For instance, we can turn on/off CONFIG_SLUB_STATS without full kernel build. [akpm@linux-foundation.org: export kmem_cache_size() to modules] [rdunlap@infradead.org: add header files to fix kmemcheck.c build errors] Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com> Acked-by: Christoph Lameter <cl@linux.com> Cc: Pekka Enberg <penberg@kernel.org> Cc: David Rientjes <rientjes@google.com> Cc: Zhang Yanfei <zhangyanfei@cn.fujitsu.com> Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/slab_common.c')
-rw-r--r--mm/slab_common.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/mm/slab_common.c b/mm/slab_common.c
index cabb842..d7d8ffd 100644
--- a/mm/slab_common.c
+++ b/mm/slab_common.c
@@ -30,6 +30,15 @@ LIST_HEAD(slab_caches);
DEFINE_MUTEX(slab_mutex);
struct kmem_cache *kmem_cache;
+/*
+ * Determine the size of a slab object
+ */
+unsigned int kmem_cache_size(struct kmem_cache *s)
+{
+ return s->object_size;
+}
+EXPORT_SYMBOL(kmem_cache_size);
+
#ifdef CONFIG_DEBUG_VM
static int kmem_cache_sanity_check(const char *name, size_t size)
{
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