diff options
| author | Bob Liu <lliubbo@gmail.com> | 2011-08-04 11:02:33 +0200 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2011-11-22 08:09:41 -0800 |
| commit | 90459ce06f410b983540be56209c0abcbce23944 (patch) | |
| tree | de385624ae9bf2dc3c5bf0f54d97ac7db5241108 | |
| parent | f8f5ed7c996ad9426847ce09b828d415cb19bc06 (diff) | |
percpu: rename pcpu_mem_alloc to pcpu_mem_zalloc
Currently pcpu_mem_alloc() is implemented always return zeroed memory.
So rename it to make user like pcpu_get_pages_and_bitmap() know don't
reinit it.
Signed-off-by: Bob Liu <lliubbo@gmail.com>
Reviewed-by: Pekka Enberg <penberg@kernel.org>
Reviewed-by: Michal Hocko <mhocko@suse.cz>
Signed-off-by: Tejun Heo <tj@kernel.org>
| -rw-r--r-- | mm/percpu-vm.c | 5 | ||||
| -rw-r--r-- | mm/percpu.c | 17 |
2 files changed, 11 insertions, 11 deletions
diff --git a/mm/percpu-vm.c b/mm/percpu-vm.c index ea534960a04..29e3730d2ff 100644 --- a/mm/percpu-vm.c +++ b/mm/percpu-vm.c @@ -50,14 +50,13 @@ static struct page **pcpu_get_pages_and_bitmap(struct pcpu_chunk *chunk, if (!pages || !bitmap) { if (may_alloc && !pages) - pages = pcpu_mem_alloc(pages_size); + pages = pcpu_mem_zalloc(pages_size); if (may_alloc && !bitmap) - bitmap = pcpu_mem_alloc(bitmap_size); + bitmap = pcpu_mem_zalloc(bitmap_size); if (!pages || !bitmap) return NULL; } - memset(pages, 0, pages_size); bitmap_copy(bitmap, chunk->populated, pcpu_unit_pages); *bitmapp = bitmap; diff --git a/mm/percpu.c b/mm/percpu.c index bf80e55dbed..28c37a2e2de 100644 --- a/mm/percpu.c +++ b/mm/percpu.c @@ -273,11 +273,11 @@ static void __maybe_unused pcpu_next_pop(struct pcpu_chunk *chunk, (rs) = (re) + 1, pcpu_next_pop((chunk), &(rs), &(re), (end))) /** - * pcpu_mem_alloc - allocate memory + * pcpu_mem_zalloc - allocate memory * @size: bytes to allocate * * Allocate @size bytes. If @size is smaller than PAGE_SIZE, - * kzalloc() is used; otherwise, vmalloc() is used. The returned + * kzalloc() is used; otherwise, vzalloc() is used. The returned * memory is always zeroed. * * CONTEXT: @@ -286,7 +286,7 @@ static void __maybe_unused pcpu_next_pop(struct pcpu_chunk *chunk, * RETURNS: * Pointer to the allocated area on success, NULL on failure. */ -static void *pcpu_mem_alloc(size_t size) +static void *pcpu_mem_zalloc(size_t size) { if (WARN_ON_ONCE(!slab_is_available())) return NULL; @@ -302,7 +302,7 @@ static void *pcpu_mem_alloc(size_t size) * @ptr: memory to free * @size: size of the area * - * Free @ptr. @ptr should have been allocated using pcpu_mem_alloc(). + * Free @ptr. @ptr should have been allocated using pcpu_mem_zalloc(). */ static void pcpu_mem_free(void *ptr, size_t size) { @@ -384,7 +384,7 @@ static int pcpu_extend_area_map(struct pcpu_chunk *chunk, int new_alloc) size_t old_size = 0, new_size = new_alloc * sizeof(new[0]); unsigned long flags; - new = pcpu_mem_alloc(new_size); + new = pcpu_mem_zalloc(new_size); if (!new) return -ENOMEM; @@ -604,11 +604,12 @@ static struct pcpu_chunk *pcpu_alloc_chunk(void) { struct pcpu_chunk *chunk; - chunk = pcpu_mem_alloc(pcpu_chunk_struct_size); + chunk = pcpu_mem_zalloc(pcpu_chunk_struct_size); if (!chunk) return NULL; - chunk->map = pcpu_mem_alloc(PCPU_DFL_MAP_ALLOC * sizeof(chunk->map[0])); + chunk->map = pcpu_mem_zalloc(PCPU_DFL_MAP_ALLOC * + sizeof(chunk->map[0])); if (!chunk->map) { kfree(chunk); return NULL; @@ -1889,7 +1890,7 @@ void __init percpu_init_late(void) BUILD_BUG_ON(size > PAGE_SIZE); - map = pcpu_mem_alloc(size); + map = pcpu_mem_zalloc(size); BUG_ON(!map); spin_lock_irqsave(&pcpu_lock, flags); |