Commit 0f24f128 authored by Li Zefan's avatar Li Zefan Committed by Ingo Molnar
Browse files

tracing, slab: Define kmem_cache_alloc_notrace ifdef CONFIG_TRACING 



Define kmem_trace_alloc_{,node}_notrace() if CONFIG_TRACING is
enabled, otherwise perf-kmem will show wrong stats ifndef
CONFIG_KMEM_TRACE, because a kmalloc() memory allocation may
be traced by both trace_kmalloc() and trace_kmem_cache_alloc().

Signed-off-by: default avatarLi Zefan <lizf@cn.fujitsu.com>
Reviewed-by: default avatarPekka Enberg <penberg@cs.helsinki.fi>
Cc: Christoph Lameter <cl@linux-foundation.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: linux-mm@kvack.org <linux-mm@kvack.org>
Cc: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro>
LKML-Reference: <4B21F89A.7000801@cn.fujitsu.com>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent 12558038

include/linux/slab_def.h

+2 −2
Original line number Diff line number Diff line
@@ -110,7 +110,7 @@ extern struct cache_sizes malloc_sizes[]; 
void *kmem_cache_alloc(struct kmem_cache *, gfp_t);

void *__kmalloc(size_t size, gfp_t flags);



#ifdef CONFIG_KMEMTRACE

#ifdef CONFIG_TRACING

extern void *kmem_cache_alloc_notrace(struct kmem_cache *cachep, gfp_t flags);

extern size_t slab_buffer_size(struct kmem_cache *cachep);

#else
@@ -166,7 +166,7 @@ found: 
extern void *__kmalloc_node(size_t size, gfp_t flags, int node);

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



#ifdef CONFIG_KMEMTRACE

#ifdef CONFIG_TRACING

extern void *kmem_cache_alloc_node_notrace(struct kmem_cache *cachep,

					   gfp_t flags,

					   int nodeid);

include/linux/slub_def.h

+2 −2
Original line number Diff line number Diff line
@@ -217,7 +217,7 @@ static __always_inline struct kmem_cache *kmalloc_slab(size_t size) 
void *kmem_cache_alloc(struct kmem_cache *, gfp_t);

void *__kmalloc(size_t size, gfp_t flags);



#ifdef CONFIG_KMEMTRACE

#ifdef CONFIG_TRACING

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

#else

static __always_inline void *
@@ -266,7 +266,7 @@ static __always_inline void *kmalloc(size_t size, gfp_t flags) 
void *__kmalloc_node(size_t size, gfp_t flags, int node);

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



#ifdef CONFIG_KMEMTRACE

#ifdef CONFIG_TRACING

extern void *kmem_cache_alloc_node_notrace(struct kmem_cache *s,

					   gfp_t gfpflags,

					   int node);

mm/slab.c

+3 −3
Original line number Diff line number Diff line
@@ -490,7 +490,7 @@ static void **dbg_userword(struct kmem_cache *cachep, void *objp) 


#endif



#ifdef CONFIG_KMEMTRACE

#ifdef CONFIG_TRACING

size_t slab_buffer_size(struct kmem_cache *cachep)

{

	return cachep->buffer_size;
@@ -3558,7 +3558,7 @@ void *kmem_cache_alloc(struct kmem_cache *cachep, gfp_t flags) 
}

EXPORT_SYMBOL(kmem_cache_alloc);



#ifdef CONFIG_KMEMTRACE

#ifdef CONFIG_TRACING

void *kmem_cache_alloc_notrace(struct kmem_cache *cachep, gfp_t flags)

{

	return __cache_alloc(cachep, flags, __builtin_return_address(0));
@@ -3621,7 +3621,7 @@ void *kmem_cache_alloc_node(struct kmem_cache *cachep, gfp_t flags, int nodeid) 
}

EXPORT_SYMBOL(kmem_cache_alloc_node);



#ifdef CONFIG_KMEMTRACE

#ifdef CONFIG_TRACING

void *kmem_cache_alloc_node_notrace(struct kmem_cache *cachep,

				    gfp_t flags,

				    int nodeid)

mm/slub.c

+2 −2
Original line number Diff line number Diff line
@@ -1754,7 +1754,7 @@ void *kmem_cache_alloc(struct kmem_cache *s, gfp_t gfpflags) 
}

EXPORT_SYMBOL(kmem_cache_alloc);



#ifdef CONFIG_KMEMTRACE

#ifdef CONFIG_TRACING

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

{

	return slab_alloc(s, gfpflags, -1, _RET_IP_);
@@ -1775,7 +1775,7 @@ void *kmem_cache_alloc_node(struct kmem_cache *s, gfp_t gfpflags, int node) 
EXPORT_SYMBOL(kmem_cache_alloc_node);

#endif



#ifdef CONFIG_KMEMTRACE

#ifdef CONFIG_TRACING

void *kmem_cache_alloc_node_notrace(struct kmem_cache *s,

				    gfp_t gfpflags,

				    int node)

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