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Commit 3b03117c authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge branch 'slub/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/slab-2.6 

* 'slub/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/slab-2.6:
  SLUB: Allow full duplication of kmalloc array for 390
  slub: move kmem_cache_node into it's own cacheline
parents fa7eadab 0f1f6942

include/linux/slub_def.h

+4 −7
Original line number Diff line number Diff line
@@ -75,12 +75,6 @@ struct kmem_cache { 
	int offset;		/* Free pointer offset. */

	struct kmem_cache_order_objects oo;



	/*

	 * Avoid an extra cache line for UP, SMP and for the node local to

	 * struct kmem_cache.

	 */

	struct kmem_cache_node local_node;



	/* Allocation and freeing of slabs */

	struct kmem_cache_order_objects max;

	struct kmem_cache_order_objects min;
@@ -102,6 +96,9 @@ struct kmem_cache { 
	 */

	int remote_node_defrag_ratio;

	struct kmem_cache_node *node[MAX_NUMNODES];

#else

	/* Avoid an extra cache line for UP */

	struct kmem_cache_node local_node;

#endif

};
@@ -140,7 +137,7 @@ struct kmem_cache { 
#ifdef CONFIG_ZONE_DMA

#define SLUB_DMA __GFP_DMA

/* Reserve extra caches for potential DMA use */

#define KMALLOC_CACHES (2 * SLUB_PAGE_SHIFT - 6)

#define KMALLOC_CACHES (2 * SLUB_PAGE_SHIFT)

#else

/* Disable DMA functionality */

#define SLUB_DMA (__force gfp_t)0

mm/slub.c

+11 −22
Original line number Diff line number Diff line
@@ -2137,7 +2137,7 @@ static void free_kmem_cache_nodes(struct kmem_cache *s) 


	for_each_node_state(node, N_NORMAL_MEMORY) {

		struct kmem_cache_node *n = s->node[node];

		if (n && n != &s->local_node)

		if (n)

			kmem_cache_free(kmalloc_caches, n);

		s->node[node] = NULL;

	}
@@ -2146,20 +2146,10 @@ static void free_kmem_cache_nodes(struct kmem_cache *s) 
static int init_kmem_cache_nodes(struct kmem_cache *s, gfp_t gfpflags)

{

	int node;

	int local_node;



	if (slab_state >= UP && (s < kmalloc_caches ||

			s >= kmalloc_caches + KMALLOC_CACHES))

		local_node = page_to_nid(virt_to_page(s));

	else

		local_node = 0;



	for_each_node_state(node, N_NORMAL_MEMORY) {

		struct kmem_cache_node *n;



		if (local_node == node)

			n = &s->local_node;

		else {

		if (slab_state == DOWN) {

			early_kmem_cache_node_alloc(gfpflags, node);

			continue;
@@ -2172,7 +2162,6 @@ static int init_kmem_cache_nodes(struct kmem_cache *s, gfp_t gfpflags) 
			return 0;

		}



		}

		s->node[node] = n;

		init_kmem_cache_node(n, s);

	}