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>
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@ -59,7 +59,10 @@ struct kmem_cache {
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#endif
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#ifdef CONFIG_NUMA
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int defrag_ratio;
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/*
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* Defragmentation by allocating from a remote node.
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*/
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int remote_node_defrag_ratio;
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struct kmem_cache_node *node[MAX_NUMNODES];
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#endif
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#ifdef CONFIG_SMP
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17
mm/slub.c
17
mm/slub.c
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@ -1295,7 +1295,8 @@ static struct page *get_any_partial(struct kmem_cache *s, gfp_t flags)
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* expensive if we do it every time we are trying to find a slab
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* with available objects.
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*/
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if (!s->defrag_ratio || get_cycles() % 1024 > s->defrag_ratio)
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if (!s->remote_node_defrag_ratio ||
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get_cycles() % 1024 > s->remote_node_defrag_ratio)
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return NULL;
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zonelist = &NODE_DATA(slab_node(current->mempolicy))
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@ -2209,7 +2210,7 @@ static int kmem_cache_open(struct kmem_cache *s, gfp_t gfpflags,
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s->refcount = 1;
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#ifdef CONFIG_NUMA
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s->defrag_ratio = 100;
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s->remote_node_defrag_ratio = 100;
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#endif
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if (!init_kmem_cache_nodes(s, gfpflags & ~SLUB_DMA))
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goto error;
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@ -3847,21 +3848,21 @@ static ssize_t free_calls_show(struct kmem_cache *s, char *buf)
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SLAB_ATTR_RO(free_calls);
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#ifdef CONFIG_NUMA
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static ssize_t defrag_ratio_show(struct kmem_cache *s, char *buf)
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static ssize_t remote_node_defrag_ratio_show(struct kmem_cache *s, char *buf)
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{
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return sprintf(buf, "%d\n", s->defrag_ratio / 10);
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return sprintf(buf, "%d\n", s->remote_node_defrag_ratio / 10);
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}
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static ssize_t defrag_ratio_store(struct kmem_cache *s,
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static ssize_t remote_node_defrag_ratio_store(struct kmem_cache *s,
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const char *buf, size_t length)
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{
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int n = simple_strtoul(buf, NULL, 10);
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if (n < 100)
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s->defrag_ratio = n * 10;
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s->remote_node_defrag_ratio = n * 10;
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return length;
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}
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SLAB_ATTR(defrag_ratio);
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SLAB_ATTR(remote_node_defrag_ratio);
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#endif
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static struct attribute * slab_attrs[] = {
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@ -3892,7 +3893,7 @@ static struct attribute * slab_attrs[] = {
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&cache_dma_attr.attr,
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#endif
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#ifdef CONFIG_NUMA
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&defrag_ratio_attr.attr,
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&remote_node_defrag_ratio_attr.attr,
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#endif
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NULL
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};
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