[PATCH 03/10] mm, slab: Remove silly function slab_buffer_size()

[Ezequiel Garcia <elezegarcia@gmail.com>]

This function is seldom used, and can be simply replaced with cachep->size.

Cc: Pekka Enberg <penberg@kernel.org>
Signed-off-by: Ezequiel Garcia <elezegarcia@gmail.com>
---
 include/linux/slab_def.h |    5 -----
 mm/slab.c                |   12 ++----------
 2 files changed, 2 insertions(+), 15 deletions(-)

diff --git a/include/linux/slab_def.h b/include/linux/slab_def.h
index 36d7031..604ebc8 100644
--- a/include/linux/slab_def.h
+++ b/include/linux/slab_def.h
@@ -113,17 +113,12 @@ void *__kmalloc(size_t size, gfp_t flags);
 #ifdef CONFIG_TRACING
 extern void *kmem_cache_alloc_trace(size_t size,
 				    struct kmem_cache *cachep, gfp_t flags);
-extern size_t slab_buffer_size(struct kmem_cache *cachep);
 #else
 static __always_inline void *
 kmem_cache_alloc_trace(size_t size, struct kmem_cache *cachep, gfp_t flags)
 {
 	return kmem_cache_alloc(cachep, flags);
 }
-static inline size_t slab_buffer_size(struct kmem_cache *cachep)
-{
-	return 0;
-}
 #endif
 
 static __always_inline void *kmalloc(size_t size, gfp_t flags)
diff --git a/mm/slab.c b/mm/slab.c
index 3b4587b..53e41de 100644
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -498,14 +498,6 @@ static void **dbg_userword(struct kmem_cache *cachep, void *objp)
 
 #endif
 
-#ifdef CONFIG_TRACING
-size_t slab_buffer_size(struct kmem_cache *cachep)
-{
-	return cachep->size;
-}
-EXPORT_SYMBOL(slab_buffer_size);
-#endif
-
 /*
  * Do not go above this order unless 0 objects fit into the slab or
  * overridden on the command line.
@@ -3849,7 +3841,7 @@ kmem_cache_alloc_trace(size_t size, struct kmem_cache *cachep, gfp_t flags)
 	ret = __cache_alloc(cachep, flags, __builtin_return_address(0));
 
 	trace_kmalloc(_RET_IP_, ret,
-		      size, slab_buffer_size(cachep), flags);
+		      size, cachep->size, flags);
 	return ret;
 }
 EXPORT_SYMBOL(kmem_cache_alloc_trace);
@@ -3880,7 +3872,7 @@ void *kmem_cache_alloc_node_trace(size_t size,
 	ret = __cache_alloc_node(cachep, flags, nodeid,
 				  __builtin_return_address(0));
 	trace_kmalloc_node(_RET_IP_, ret,
-			   size, slab_buffer_size(cachep),
+			   size, cachep->size,
 			   flags, nodeid);
 	return ret;
 }
-- 
1.7.8.6