diff options
| author | Christoph Lameter <clameter@sgi.com> | 2008-01-08 10:20:26 +0300 |
|---|---|---|
| committer | Christoph Lameter <clameter@sgi.com> | 2008-02-04 21:56:02 +0300 |
| commit | 9824601ead957a29e35d539e43266c003f7b085b (patch) | |
| tree | 13df23987102e39fce77d64f60e499401444a905 | |
| parent | f61396aed90acb033952531c522d1010f87e24f4 (diff) | |
| download | linux-9824601ead957a29e35d539e43266c003f7b085b.tar.xz | |
SLUB: rename defrag to remote_node_defrag_ratio
The NUMA defrag works by allocating objects from partial slabs on remote
nodes. Rename it to
remote_node_defrag_ratio
to be clear about this.
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
| -rw-r--r-- | include/linux/slub_def.h | 5 | ||||
| -rw-r--r-- | mm/slub.c | 17 |
2 files changed, 13 insertions, 9 deletions
diff --git a/include/linux/slub_def.h b/include/linux/slub_def.h index 40801e754afb..a06ee26193c2 100644 --- a/include/linux/slub_def.h +++ b/include/linux/slub_def.h @@ -59,7 +59,10 @@ struct kmem_cache { #endif #ifdef CONFIG_NUMA - int defrag_ratio; + /* + * Defragmentation by allocating from a remote node. + */ + int remote_node_defrag_ratio; struct kmem_cache_node *node[MAX_NUMNODES]; #endif #ifdef CONFIG_SMP diff --git a/mm/slub.c b/mm/slub.c index 9aa12b54ad1b..5146e2779c11 100644 --- a/mm/slub.c +++ b/mm/slub.c @@ -1295,7 +1295,8 @@ static struct page *get_any_partial(struct kmem_cache *s, gfp_t flags) * expensive if we do it every time we are trying to find a slab * with available objects. */ - if (!s->defrag_ratio || get_cycles() % 1024 > s->defrag_ratio) + if (!s->remote_node_defrag_ratio || + get_cycles() % 1024 > s->remote_node_defrag_ratio) return NULL; zonelist = &NODE_DATA(slab_node(current->mempolicy)) @@ -2209,7 +2210,7 @@ static int kmem_cache_open(struct kmem_cache *s, gfp_t gfpflags, s->refcount = 1; #ifdef CONFIG_NUMA - s->defrag_ratio = 100; + s->remote_node_defrag_ratio = 100; #endif if (!init_kmem_cache_nodes(s, gfpflags & ~SLUB_DMA)) goto error; @@ -3847,21 +3848,21 @@ static ssize_t free_calls_show(struct kmem_cache *s, char *buf) SLAB_ATTR_RO(free_calls); #ifdef CONFIG_NUMA -static ssize_t defrag_ratio_show(struct kmem_cache *s, char *buf) +static ssize_t remote_node_defrag_ratio_show(struct kmem_cache *s, char *buf) { - return sprintf(buf, "%d\n", s->defrag_ratio / 10); + return sprintf(buf, "%d\n", s->remote_node_defrag_ratio / 10); } -static ssize_t defrag_ratio_store(struct kmem_cache *s, +static ssize_t remote_node_defrag_ratio_store(struct kmem_cache *s, const char *buf, size_t length) { int n = simple_strtoul(buf, NULL, 10); if (n < 100) - s->defrag_ratio = n * 10; + s->remote_node_defrag_ratio = n * 10; return length; } -SLAB_ATTR(defrag_ratio); +SLAB_ATTR(remote_node_defrag_ratio); #endif static struct attribute * slab_attrs[] = { @@ -3892,7 +3893,7 @@ static struct attribute * slab_attrs[] = { &cache_dma_attr.attr, #endif #ifdef CONFIG_NUMA - &defrag_ratio_attr.attr, + &remote_node_defrag_ratio_attr.attr, #endif NULL }; |