Commit 2154a336 authored by Christoph Lameter's avatar Christoph Lameter Committed by Pekka Enberg
Browse files

slub: Use a constant for a unspecified node. 



kmalloc_node() and friends can be passed a constant -1 to indicate
that no choice was made for the node from which the object needs to
come.

Use NUMA_NO_NODE instead of -1.

CC: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Signed-off-by: default avatarDavid Rientjes <rientjes@google.com>
Signed-off-by: default avatarChristoph Lameter <cl@linux-foundation.org>
Signed-off-by: default avatarPekka Enberg <penberg@cs.helsinki.fi>
parent 1c5474a6

mm/slub.c

+7 −7
Original line number Diff line number Diff line
@@ -1073,7 +1073,7 @@ static inline struct page *alloc_slab_page(gfp_t flags, int node, 


	flags |= __GFP_NOTRACK;



	if (node == -1)

	if (node == NUMA_NO_NODE)

		return alloc_pages(flags, order);

	else

		return alloc_pages_exact_node(node, flags, order);
@@ -1387,7 +1387,7 @@ static struct page *get_any_partial(struct kmem_cache *s, gfp_t flags) 
static struct page *get_partial(struct kmem_cache *s, gfp_t flags, int node)

{

	struct page *page;

	int searchnode = (node == -1) ? numa_node_id() : node;

	int searchnode = (node == NUMA_NO_NODE) ? numa_node_id() : node;



	page = get_partial_node(get_node(s, searchnode));

	if (page || (flags & __GFP_THISNODE))
@@ -1515,7 +1515,7 @@ static void flush_all(struct kmem_cache *s) 
static inline int node_match(struct kmem_cache_cpu *c, int node)

{

#ifdef CONFIG_NUMA

	if (node != -1 && c->node != node)

	if (node != NUMA_NO_NODE && c->node != node)

		return 0;

#endif

	return 1;
@@ -1727,7 +1727,7 @@ static __always_inline void *slab_alloc(struct kmem_cache *s, 


void *kmem_cache_alloc(struct kmem_cache *s, gfp_t gfpflags)

{

	void *ret = slab_alloc(s, gfpflags, -1, _RET_IP_);

	void *ret = slab_alloc(s, gfpflags, NUMA_NO_NODE, _RET_IP_);



	trace_kmem_cache_alloc(_RET_IP_, ret, s->objsize, s->size, gfpflags);
@@ -1738,7 +1738,7 @@ EXPORT_SYMBOL(kmem_cache_alloc); 
#ifdef CONFIG_TRACING

void *kmem_cache_alloc_notrace(struct kmem_cache *s, gfp_t gfpflags)

{

	return slab_alloc(s, gfpflags, -1, _RET_IP_);

	return slab_alloc(s, gfpflags, NUMA_NO_NODE, _RET_IP_);

}

EXPORT_SYMBOL(kmem_cache_alloc_notrace);

#endif
@@ -2728,7 +2728,7 @@ void *__kmalloc(size_t size, gfp_t flags) 
	if (unlikely(ZERO_OR_NULL_PTR(s)))

		return s;



	ret = slab_alloc(s, flags, -1, _RET_IP_);

	ret = slab_alloc(s, flags, NUMA_NO_NODE, _RET_IP_);



	trace_kmalloc(_RET_IP_, ret, size, s->size, flags);
@@ -3312,7 +3312,7 @@ void *__kmalloc_track_caller(size_t size, gfp_t gfpflags, unsigned long caller) 
	if (unlikely(ZERO_OR_NULL_PTR(s)))

		return s;



	ret = slab_alloc(s, gfpflags, -1, caller);

	ret = slab_alloc(s, gfpflags, NUMA_NO_NODE, caller);



	/* Honor the call site pointer we recieved. */

	trace_kmalloc(caller, ret, size, s->size, gfpflags);

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