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SLUB: Replace __builtin_return_address(0) with _RET_IP_.
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This patch replaces __builtin_return_address(0) with _RET_IP_, since a
previous patch moved _RET_IP_ and _THIS_IP_ to include/linux/kernel.h and
they're widely available now. This makes for shorter and easier to read
code.

[penberg@cs.helsinki.fi: remove _RET_IP_ casts to void pointer]
Signed-off-by: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro>
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
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Eduard - Gabriel Munteanu authored and Pekka Enberg committed Nov 26, 2008
1 parent 210b5c0 commit ce71e27
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Showing 3 changed files with 32 additions and 32 deletions.
8 changes: 4 additions & 4 deletions include/linux/slab.h
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Original file line number Diff line number Diff line change
Expand Up @@ -253,9 +253,9 @@ static inline void *kmem_cache_alloc_node(struct kmem_cache *cachep,
* request comes from.
*/
#if defined(CONFIG_DEBUG_SLAB) || defined(CONFIG_SLUB)
extern void *__kmalloc_track_caller(size_t, gfp_t, void*);
extern void *__kmalloc_track_caller(size_t, gfp_t, unsigned long);
#define kmalloc_track_caller(size, flags) \
__kmalloc_track_caller(size, flags, __builtin_return_address(0))
__kmalloc_track_caller(size, flags, _RET_IP_)
#else
#define kmalloc_track_caller(size, flags) \
__kmalloc(size, flags)
Expand All @@ -271,10 +271,10 @@ extern void *__kmalloc_track_caller(size_t, gfp_t, void*);
* allocation request comes from.
*/
#if defined(CONFIG_DEBUG_SLAB) || defined(CONFIG_SLUB)
extern void *__kmalloc_node_track_caller(size_t, gfp_t, int, void *);
extern void *__kmalloc_node_track_caller(size_t, gfp_t, int, unsigned long);
#define kmalloc_node_track_caller(size, flags, node) \
__kmalloc_node_track_caller(size, flags, node, \
__builtin_return_address(0))
_RET_IP_)
#else
#define kmalloc_node_track_caller(size, flags, node) \
__kmalloc_node(size, flags, node)
Expand Down
8 changes: 4 additions & 4 deletions mm/slab.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -3686,9 +3686,9 @@ void *__kmalloc_node(size_t size, gfp_t flags, int node)
EXPORT_SYMBOL(__kmalloc_node);

void *__kmalloc_node_track_caller(size_t size, gfp_t flags,
int node, void *caller)
int node, unsigned long caller)
{
return __do_kmalloc_node(size, flags, node, caller);
return __do_kmalloc_node(size, flags, node, (void *)caller);
}
EXPORT_SYMBOL(__kmalloc_node_track_caller);
#else
Expand Down Expand Up @@ -3730,9 +3730,9 @@ void *__kmalloc(size_t size, gfp_t flags)
}
EXPORT_SYMBOL(__kmalloc);

void *__kmalloc_track_caller(size_t size, gfp_t flags, void *caller)
void *__kmalloc_track_caller(size_t size, gfp_t flags, unsigned long caller)
{
return __do_kmalloc(size, flags, caller);
return __do_kmalloc(size, flags, (void *)caller);
}
EXPORT_SYMBOL(__kmalloc_track_caller);

Expand Down
48 changes: 24 additions & 24 deletions mm/slub.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -182,7 +182,7 @@ static LIST_HEAD(slab_caches);
* Tracking user of a slab.
*/
struct track {
void *addr; /* Called from address */
unsigned long addr; /* Called from address */
int cpu; /* Was running on cpu */
int pid; /* Pid context */
unsigned long when; /* When did the operation occur */
Expand Down Expand Up @@ -371,7 +371,7 @@ static struct track *get_track(struct kmem_cache *s, void *object,
}

static void set_track(struct kmem_cache *s, void *object,
enum track_item alloc, void *addr)
enum track_item alloc, unsigned long addr)
{
struct track *p;

Expand All @@ -395,8 +395,8 @@ static void init_tracking(struct kmem_cache *s, void *object)
if (!(s->flags & SLAB_STORE_USER))
return;

set_track(s, object, TRACK_FREE, NULL);
set_track(s, object, TRACK_ALLOC, NULL);
set_track(s, object, TRACK_FREE, 0UL);
set_track(s, object, TRACK_ALLOC, 0UL);
}

static void print_track(const char *s, struct track *t)
Expand All @@ -405,7 +405,7 @@ static void print_track(const char *s, struct track *t)
return;

printk(KERN_ERR "INFO: %s in %pS age=%lu cpu=%u pid=%d\n",
s, t->addr, jiffies - t->when, t->cpu, t->pid);
s, (void *)t->addr, jiffies - t->when, t->cpu, t->pid);
}

static void print_tracking(struct kmem_cache *s, void *object)
Expand Down Expand Up @@ -870,7 +870,7 @@ static void setup_object_debug(struct kmem_cache *s, struct page *page,
}

static int alloc_debug_processing(struct kmem_cache *s, struct page *page,
void *object, void *addr)
void *object, unsigned long addr)
{
if (!check_slab(s, page))
goto bad;
Expand Down Expand Up @@ -910,7 +910,7 @@ static int alloc_debug_processing(struct kmem_cache *s, struct page *page,
}

static int free_debug_processing(struct kmem_cache *s, struct page *page,
void *object, void *addr)
void *object, unsigned long addr)
{
if (!check_slab(s, page))
goto fail;
Expand Down Expand Up @@ -1033,10 +1033,10 @@ static inline void setup_object_debug(struct kmem_cache *s,
struct page *page, void *object) {}

static inline int alloc_debug_processing(struct kmem_cache *s,
struct page *page, void *object, void *addr) { return 0; }
struct page *page, void *object, unsigned long addr) { return 0; }

static inline int free_debug_processing(struct kmem_cache *s,
struct page *page, void *object, void *addr) { return 0; }
struct page *page, void *object, unsigned long addr) { return 0; }

static inline int slab_pad_check(struct kmem_cache *s, struct page *page)
{ return 1; }
Expand Down Expand Up @@ -1503,8 +1503,8 @@ static inline int node_match(struct kmem_cache_cpu *c, int node)
* we need to allocate a new slab. This is the slowest path since it involves
* a call to the page allocator and the setup of a new slab.
*/
static void *__slab_alloc(struct kmem_cache *s,
gfp_t gfpflags, int node, void *addr, struct kmem_cache_cpu *c)
static void *__slab_alloc(struct kmem_cache *s, gfp_t gfpflags, int node,
unsigned long addr, struct kmem_cache_cpu *c)
{
void **object;
struct page *new;
Expand Down Expand Up @@ -1588,7 +1588,7 @@ static void *__slab_alloc(struct kmem_cache *s,
* Otherwise we can simply pick the next object from the lockless free list.
*/
static __always_inline void *slab_alloc(struct kmem_cache *s,
gfp_t gfpflags, int node, void *addr)
gfp_t gfpflags, int node, unsigned long addr)
{
void **object;
struct kmem_cache_cpu *c;
Expand Down Expand Up @@ -1617,14 +1617,14 @@ static __always_inline void *slab_alloc(struct kmem_cache *s,

void *kmem_cache_alloc(struct kmem_cache *s, gfp_t gfpflags)
{
return slab_alloc(s, gfpflags, -1, __builtin_return_address(0));
return slab_alloc(s, gfpflags, -1, _RET_IP_);
}
EXPORT_SYMBOL(kmem_cache_alloc);

#ifdef CONFIG_NUMA
void *kmem_cache_alloc_node(struct kmem_cache *s, gfp_t gfpflags, int node)
{
return slab_alloc(s, gfpflags, node, __builtin_return_address(0));
return slab_alloc(s, gfpflags, node, _RET_IP_);
}
EXPORT_SYMBOL(kmem_cache_alloc_node);
#endif
Expand All @@ -1638,7 +1638,7 @@ EXPORT_SYMBOL(kmem_cache_alloc_node);
* handling required then we can return immediately.
*/
static void __slab_free(struct kmem_cache *s, struct page *page,
void *x, void *addr, unsigned int offset)
void *x, unsigned long addr, unsigned int offset)
{
void *prior;
void **object = (void *)x;
Expand Down Expand Up @@ -1708,7 +1708,7 @@ static void __slab_free(struct kmem_cache *s, struct page *page,
* with all sorts of special processing.
*/
static __always_inline void slab_free(struct kmem_cache *s,
struct page *page, void *x, void *addr)
struct page *page, void *x, unsigned long addr)
{
void **object = (void *)x;
struct kmem_cache_cpu *c;
Expand All @@ -1735,7 +1735,7 @@ void kmem_cache_free(struct kmem_cache *s, void *x)

page = virt_to_head_page(x);

slab_free(s, page, x, __builtin_return_address(0));
slab_free(s, page, x, _RET_IP_);
}
EXPORT_SYMBOL(kmem_cache_free);

Expand Down Expand Up @@ -2663,7 +2663,7 @@ void *__kmalloc(size_t size, gfp_t flags)
if (unlikely(ZERO_OR_NULL_PTR(s)))
return s;

return slab_alloc(s, flags, -1, __builtin_return_address(0));
return slab_alloc(s, flags, -1, _RET_IP_);
}
EXPORT_SYMBOL(__kmalloc);

Expand Down Expand Up @@ -2691,7 +2691,7 @@ void *__kmalloc_node(size_t size, gfp_t flags, int node)
if (unlikely(ZERO_OR_NULL_PTR(s)))
return s;

return slab_alloc(s, flags, node, __builtin_return_address(0));
return slab_alloc(s, flags, node, _RET_IP_);
}
EXPORT_SYMBOL(__kmalloc_node);
#endif
Expand Down Expand Up @@ -2748,7 +2748,7 @@ void kfree(const void *x)
put_page(page);
return;
}
slab_free(page->slab, page, object, __builtin_return_address(0));
slab_free(page->slab, page, object, _RET_IP_);
}
EXPORT_SYMBOL(kfree);

Expand Down Expand Up @@ -3204,7 +3204,7 @@ static struct notifier_block __cpuinitdata slab_notifier = {

#endif

void *__kmalloc_track_caller(size_t size, gfp_t gfpflags, void *caller)
void *__kmalloc_track_caller(size_t size, gfp_t gfpflags, unsigned long caller)
{
struct kmem_cache *s;

Expand All @@ -3220,7 +3220,7 @@ void *__kmalloc_track_caller(size_t size, gfp_t gfpflags, void *caller)
}

void *__kmalloc_node_track_caller(size_t size, gfp_t gfpflags,
int node, void *caller)
int node, unsigned long caller)
{
struct kmem_cache *s;

Expand Down Expand Up @@ -3431,7 +3431,7 @@ static void resiliency_test(void) {};

struct location {
unsigned long count;
void *addr;
unsigned long addr;
long long sum_time;
long min_time;
long max_time;
Expand Down Expand Up @@ -3479,7 +3479,7 @@ static int add_location(struct loc_track *t, struct kmem_cache *s,
{
long start, end, pos;
struct location *l;
void *caddr;
unsigned long caddr;
unsigned long age = jiffies - track->when;

start = -1;
Expand Down

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