summaryrefslogtreecommitdiffstats
path: root/mm/slab.c
diff options
context:
space:
mode:
Diffstat (limited to 'mm/slab.c')
-rw-r--r--mm/slab.c45
1 files changed, 31 insertions, 14 deletions
diff --git a/mm/slab.c b/mm/slab.c
index ec660d8..771cc09 100644
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -583,7 +583,7 @@ static inline struct array_cache *ac_data(kmem_cache_t *cachep)
return cachep->array[smp_processor_id()];
}
-static inline kmem_cache_t *kmem_find_general_cachep(size_t size, int gfpflags)
+static inline kmem_cache_t *__find_general_cachep(size_t size, int gfpflags)
{
struct cache_sizes *csizep = malloc_sizes;
@@ -607,6 +607,12 @@ static inline kmem_cache_t *kmem_find_general_cachep(size_t size, int gfpflags)
return csizep->cs_cachep;
}
+kmem_cache_t *kmem_find_general_cachep(size_t size, int gfpflags)
+{
+ return __find_general_cachep(size, gfpflags);
+}
+EXPORT_SYMBOL(kmem_find_general_cachep);
+
/* Cal the num objs, wastage, and bytes left over for a given slab size. */
static void cache_estimate(unsigned long gfporder, size_t size, size_t align,
int flags, size_t *left_over, unsigned int *num)
@@ -672,14 +678,11 @@ static struct array_cache *alloc_arraycache(int cpu, int entries,
int memsize = sizeof(void*)*entries+sizeof(struct array_cache);
struct array_cache *nc = NULL;
- if (cpu != -1) {
- kmem_cache_t *cachep;
- cachep = kmem_find_general_cachep(memsize, GFP_KERNEL);
- if (cachep)
- nc = kmem_cache_alloc_node(cachep, cpu_to_node(cpu));
- }
- if (!nc)
+ if (cpu == -1)
nc = kmalloc(memsize, GFP_KERNEL);
+ else
+ nc = kmalloc_node(memsize, GFP_KERNEL, cpu_to_node(cpu));
+
if (nc) {
nc->avail = 0;
nc->limit = entries;
@@ -2361,7 +2364,7 @@ out:
* and can sleep. And it will allocate memory on the given node, which
* can improve the performance for cpu bound structures.
*/
-void *kmem_cache_alloc_node(kmem_cache_t *cachep, int nodeid)
+void *kmem_cache_alloc_node(kmem_cache_t *cachep, int flags, int nodeid)
{
int loop;
void *objp;
@@ -2393,7 +2396,7 @@ void *kmem_cache_alloc_node(kmem_cache_t *cachep, int nodeid)
spin_unlock_irq(&cachep->spinlock);
local_irq_disable();
- if (!cache_grow(cachep, GFP_KERNEL, nodeid)) {
+ if (!cache_grow(cachep, flags, nodeid)) {
local_irq_enable();
return NULL;
}
@@ -2435,6 +2438,16 @@ got_slabp:
}
EXPORT_SYMBOL(kmem_cache_alloc_node);
+void *kmalloc_node(size_t size, int flags, int node)
+{
+ kmem_cache_t *cachep;
+
+ cachep = kmem_find_general_cachep(size, flags);
+ if (unlikely(cachep == NULL))
+ return NULL;
+ return kmem_cache_alloc_node(cachep, flags, node);
+}
+EXPORT_SYMBOL(kmalloc_node);
#endif
/**
@@ -2462,7 +2475,12 @@ void *__kmalloc(size_t size, unsigned int __nocast flags)
{
kmem_cache_t *cachep;
- cachep = kmem_find_general_cachep(size, flags);
+ /* If you want to save a few bytes .text space: replace
+ * __ with kmem_.
+ * Then kmalloc uses the uninlined functions instead of the inline
+ * functions.
+ */
+ cachep = __find_general_cachep(size, flags);
if (unlikely(cachep == NULL))
return NULL;
return __cache_alloc(cachep, flags);
@@ -2489,9 +2507,8 @@ void *__alloc_percpu(size_t size, size_t align)
for (i = 0; i < NR_CPUS; i++) {
if (!cpu_possible(i))
continue;
- pdata->ptrs[i] = kmem_cache_alloc_node(
- kmem_find_general_cachep(size, GFP_KERNEL),
- cpu_to_node(i));
+ pdata->ptrs[i] = kmalloc_node(size, GFP_KERNEL,
+ cpu_to_node(i));
if (!pdata->ptrs[i])
goto unwind_oom;
OpenPOWER on IntegriCloud