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yaml
---
r: 140581
b: refs/heads/master
c: 3eae2cb
h: refs/heads/master
i:
  140579: f8126fd
v: v3
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Eduard - Gabriel Munteanu authored and Pekka Enberg committed Dec 29, 2008
1 parent 152724c commit 97313f9
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Showing 3 changed files with 37 additions and 11 deletions.
2 changes: 1 addition & 1 deletion [refs]
Original file line number Diff line number Diff line change
@@ -1,2 +1,2 @@
---
refs/heads/master: 36555751c6751a5bdfd6d7bdf0648343bb1ef0de
refs/heads/master: 3eae2cb24a96509e0a38cc48dc1538a2826f4e33
9 changes: 5 additions & 4 deletions trunk/include/linux/slob_def.h
Original file line number Diff line number Diff line change
Expand Up @@ -3,14 +3,15 @@

void *kmem_cache_alloc_node(struct kmem_cache *, gfp_t flags, int node);

static inline void *kmem_cache_alloc(struct kmem_cache *cachep, gfp_t flags)
static __always_inline void *kmem_cache_alloc(struct kmem_cache *cachep,
gfp_t flags)
{
return kmem_cache_alloc_node(cachep, flags, -1);
}

void *__kmalloc_node(size_t size, gfp_t flags, int node);

static inline void *kmalloc_node(size_t size, gfp_t flags, int node)
static __always_inline void *kmalloc_node(size_t size, gfp_t flags, int node)
{
return __kmalloc_node(size, flags, node);
}
Expand All @@ -23,12 +24,12 @@ static inline void *kmalloc_node(size_t size, gfp_t flags, int node)
* kmalloc is the normal method of allocating memory
* in the kernel.
*/
static inline void *kmalloc(size_t size, gfp_t flags)
static __always_inline void *kmalloc(size_t size, gfp_t flags)
{
return __kmalloc_node(size, flags, -1);
}

static inline void *__kmalloc(size_t size, gfp_t flags)
static __always_inline void *__kmalloc(size_t size, gfp_t flags)
{
return kmalloc(size, flags);
}
Expand Down
37 changes: 31 additions & 6 deletions trunk/mm/slob.c
Original file line number Diff line number Diff line change
Expand Up @@ -65,6 +65,7 @@
#include <linux/module.h>
#include <linux/rcupdate.h>
#include <linux/list.h>
#include <linux/kmemtrace.h>
#include <asm/atomic.h>

/*
Expand Down Expand Up @@ -463,27 +464,38 @@ void *__kmalloc_node(size_t size, gfp_t gfp, int node)
{
unsigned int *m;
int align = max(ARCH_KMALLOC_MINALIGN, ARCH_SLAB_MINALIGN);
void *ret;

if (size < PAGE_SIZE - align) {
if (!size)
return ZERO_SIZE_PTR;

m = slob_alloc(size + align, gfp, align, node);

if (!m)
return NULL;
*m = size;
return (void *)m + align;
ret = (void *)m + align;

kmemtrace_mark_alloc_node(KMEMTRACE_TYPE_KMALLOC,
_RET_IP_, ret,
size, size + align, gfp, node);
} else {
void *ret;
unsigned int order = get_order(size);

ret = slob_new_page(gfp | __GFP_COMP, get_order(size), node);
ret = slob_new_page(gfp | __GFP_COMP, order, node);
if (ret) {
struct page *page;
page = virt_to_page(ret);
page->private = size;
}
return ret;

kmemtrace_mark_alloc_node(KMEMTRACE_TYPE_KMALLOC,
_RET_IP_, ret,
size, PAGE_SIZE << order, gfp, node);
}

return ret;
}
EXPORT_SYMBOL(__kmalloc_node);

Expand All @@ -501,6 +513,8 @@ void kfree(const void *block)
slob_free(m, *m + align);
} else
put_page(&sp->page);

kmemtrace_mark_free(KMEMTRACE_TYPE_KMALLOC, _RET_IP_, block);
}
EXPORT_SYMBOL(kfree);

Expand Down Expand Up @@ -569,10 +583,19 @@ void *kmem_cache_alloc_node(struct kmem_cache *c, gfp_t flags, int node)
{
void *b;

if (c->size < PAGE_SIZE)
if (c->size < PAGE_SIZE) {
b = slob_alloc(c->size, flags, c->align, node);
else
kmemtrace_mark_alloc_node(KMEMTRACE_TYPE_CACHE,
_RET_IP_, b, c->size,
SLOB_UNITS(c->size) * SLOB_UNIT,
flags, node);
} else {
b = slob_new_page(flags, get_order(c->size), node);
kmemtrace_mark_alloc_node(KMEMTRACE_TYPE_CACHE,
_RET_IP_, b, c->size,
PAGE_SIZE << get_order(c->size),
flags, node);
}

if (c->ctor)
c->ctor(b);
Expand Down Expand Up @@ -608,6 +631,8 @@ void kmem_cache_free(struct kmem_cache *c, void *b)
} else {
__kmem_cache_free(b, c->size);
}

kmemtrace_mark_free(KMEMTRACE_TYPE_CACHE, _RET_IP_, b);
}
EXPORT_SYMBOL(kmem_cache_free);

Expand Down

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