mm, slab: remove unused kmalloc_size()

The size of kmalloc can be obtained from kmalloc_info[], so remove
kmalloc_size() that will not be used anymore.

Link: http://lkml.kernel.org/r/1569241648-26908-3-git-send-email-lpf.vector@gmail.com
Signed-off-by: Pengfei Li <lpf.vector@gmail.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Acked-by: Roman Gushchin <guro@fb.com>
Acked-by: David Rientjes <rientjes@google.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Pekka Enberg <penberg@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/include/linux/slab.h b/include/linux/slab.h
index 4d2a2fa..877a95c 100644 (file)
--- a/include/linux/slab.h
+++ b/include/linux/slab.h
@@ -561,26 +561,6 @@ static __always_inline void *kmalloc(size_t size, gfp_t flags)
        return __kmalloc(size, flags);
 }
 
-/*
- * Determine size used for the nth kmalloc cache.
- * return size or 0 if a kmalloc cache for that
- * size does not exist
- */
-static __always_inline unsigned int kmalloc_size(unsigned int n)
-{
-#ifndef CONFIG_SLOB
-       if (n > 2)
-               return 1U << n;
-
-       if (n == 1 && KMALLOC_MIN_SIZE <= 32)
-               return 96;
-
-       if (n == 2 && KMALLOC_MIN_SIZE <= 64)
-               return 192;
-#endif
-       return 0;
-}
-
 static __always_inline void *kmalloc_node(size_t size, gfp_t flags, int node)
 {
 #ifndef CONFIG_SLOB

diff --git a/mm/slab.c b/mm/slab.c
index 66b3310..f1e1840 100644 (file)
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -1248,8 +1248,9 @@ void __init kmem_cache_init(void)
         */
        kmalloc_caches[KMALLOC_NORMAL][INDEX_NODE] = create_kmalloc_cache(
                                kmalloc_info[INDEX_NODE].name[KMALLOC_NORMAL],
-                               kmalloc_size(INDEX_NODE), ARCH_KMALLOC_FLAGS,
-                               0, kmalloc_size(INDEX_NODE));
+                               kmalloc_info[INDEX_NODE].size,
+                               ARCH_KMALLOC_FLAGS, 0,
+                               kmalloc_info[INDEX_NODE].size);
        slab_state = PARTIAL_NODE;
        setup_kmalloc_cache_index_table();
 

diff --git a/mm/slab_common.c b/mm/slab_common.c
index 68a8c29..b67cbe4 100644 (file)
--- a/mm/slab_common.c
+++ b/mm/slab_common.c
@@ -1286,11 +1286,10 @@ void __init create_kmalloc_caches(slab_flags_t flags)
                struct kmem_cache *s = kmalloc_caches[KMALLOC_NORMAL][i];
 
                if (s) {
-                       unsigned int size = kmalloc_size(i);
-
                        kmalloc_caches[KMALLOC_DMA][i] = create_kmalloc_cache(
                                kmalloc_info[i].name[KMALLOC_DMA],
-                               size, SLAB_CACHE_DMA | flags, 0, 0);
+                               kmalloc_info[i].size,
+                               SLAB_CACHE_DMA | flags, 0, 0);
                }
        }
 #endif