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slub: Add statistics for this_cmpxchg_double failures

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Add some statistics for debugging.

Signed-off-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
This commit is contained in:
Christoph Lameter
2011-03-22 13:35:00 -05:00
committed by Pekka Enberg
parent 2fd66c517d
commit 4fdccdfbb4
2 changed files with 3 additions and 1 deletions
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1
include/linux/slub_def.h
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@@ -32,6 +32,7 @@ enum stat_item {
DEACTIVATE_TO_TAIL, /* Cpu slab was moved to the tail of partials */
DEACTIVATE_REMOTE_FREES,/* Slab contained remotely freed objects */
ORDER_FALLBACK, /* Number of times fallback was necessary */
CMPXCHG_DOUBLE_CPU_FAIL,/* Failure of this_cpu_cmpxchg_double */
NR_SLUB_STAT_ITEMS };
struct kmem_cache_cpu {