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| author | Christoph Lameter <cl@linux.com> | 2011-06-01 12:25:57 -0500 |
|---|---|---|
| committer | Pekka Enberg <penberg@kernel.org> | 2011-07-02 13:26:56 +0300 |
| commit | e36a2652d7d1ad97f7636a39bdd8654d296cc36b (patch) | |
| tree | fd01f6bf66b233e8e66a119ded39691914db7d7e /mm | |
| parent | fc59c05306fe1dcfa3fb8ba34ed45407fba4689c (diff) | |
| download | blackbird-op-linux-e36a2652d7d1ad97f7636a39bdd8654d296cc36b.tar.gz blackbird-op-linux-e36a2652d7d1ad97f7636a39bdd8654d296cc36b.zip | |
slub: Add statistics for the case that the current slab does not match the node
Slub reloads the per cpu slab if the page does not satisfy the NUMA condition. Track
those reloads since doing so has a performance impact.
Signed-off-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/slub.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/mm/slub.c b/mm/slub.c index 41a15c1d8068..e00b7732f556 100644 --- a/mm/slub.c +++ b/mm/slub.c @@ -1966,6 +1966,7 @@ static void *__slab_alloc(struct kmem_cache *s, gfp_t gfpflags, int node, goto new_slab; if (unlikely(!node_match(c, node))) { + stat(s, ALLOC_NODE_MISMATCH); deactivate_slab(s, c); goto new_slab; } @@ -4671,6 +4672,7 @@ STAT_ATTR(FREE_REMOVE_PARTIAL, free_remove_partial); STAT_ATTR(ALLOC_FROM_PARTIAL, alloc_from_partial); STAT_ATTR(ALLOC_SLAB, alloc_slab); STAT_ATTR(ALLOC_REFILL, alloc_refill); +STAT_ATTR(ALLOC_NODE_MISMATCH, alloc_node_mismatch); STAT_ATTR(FREE_SLAB, free_slab); STAT_ATTR(CPUSLAB_FLUSH, cpuslab_flush); STAT_ATTR(DEACTIVATE_FULL, deactivate_full); @@ -4730,6 +4732,7 @@ static struct attribute *slab_attrs[] = { &alloc_from_partial_attr.attr, &alloc_slab_attr.attr, &alloc_refill_attr.attr, + &alloc_node_mismatch_attr.attr, &free_slab_attr.attr, &cpuslab_flush_attr.attr, &deactivate_full_attr.attr, |
