diff options
| author | Pengfei Li <lpf.vector@gmail.com> | 2019-11-30 17:49:21 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2019-12-01 06:29:17 -0800 |
| commit | cb5d9fb38c3434ab6276bac500dfffe78649400b (patch) | |
| tree | facea1916345b82392b8f6f5f8228db025302a4e /mm/slab.c | |
| parent | 2b211dc04cb7fa4a8f591c7f8f4ba5243d8733d9 (diff) | |
| download | lwn-cb5d9fb38c3434ab6276bac500dfffe78649400b.tar.gz lwn-cb5d9fb38c3434ab6276bac500dfffe78649400b.zip | |
mm, slab: make kmalloc_info[] contain all types of names
Patch series "mm, slab: Make kmalloc_info[] contain all types of names", v6.
There are three types of kmalloc, KMALLOC_NORMAL, KMALLOC_RECLAIM
and KMALLOC_DMA.
The name of KMALLOC_NORMAL is contained in kmalloc_info[].name,
but the names of KMALLOC_RECLAIM and KMALLOC_DMA are dynamically
generated by kmalloc_cache_name().
Patch1 predefines the names of all types of kmalloc to save
the time spent dynamically generating names.
These changes make sense, and the time spent by new_kmalloc_cache()
has been reduced by approximately 36.3%.
Time spent by new_kmalloc_cache()
(CPU cycles)
5.3-rc7 66264
5.3-rc7+patch 42188
This patch (of 3):
There are three types of kmalloc, KMALLOC_NORMAL, KMALLOC_RECLAIM and
KMALLOC_DMA.
The name of KMALLOC_NORMAL is contained in kmalloc_info[].name, but the
names of KMALLOC_RECLAIM and KMALLOC_DMA are dynamically generated by
kmalloc_cache_name().
This patch predefines the names of all types of kmalloc to save the time
spent dynamically generating names.
Besides, remove the kmalloc_cache_name() that is no longer used.
Link: http://lkml.kernel.org/r/1569241648-26908-2-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: Pekka Enberg <penberg@kernel.org>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/slab.c')
| -rw-r--r-- | mm/slab.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/slab.c b/mm/slab.c index 66e5d8032bae..66b3310b42b8 100644 --- a/mm/slab.c +++ b/mm/slab.c @@ -1247,7 +1247,7 @@ void __init kmem_cache_init(void) * structures first. Without this, further allocations will bug. */ kmalloc_caches[KMALLOC_NORMAL][INDEX_NODE] = create_kmalloc_cache( - kmalloc_info[INDEX_NODE].name, + kmalloc_info[INDEX_NODE].name[KMALLOC_NORMAL], kmalloc_size(INDEX_NODE), ARCH_KMALLOC_FLAGS, 0, kmalloc_size(INDEX_NODE)); slab_state = PARTIAL_NODE; |