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Message-ID: <4B21DD88.7080806@cn.fujitsu.com>
Date: Fri, 11 Dec 2009 13:50:00 +0800
From: Li Zefan <lizf@...fujitsu.com>
To: Ingo Molnar <mingo@...e.hu>
CC: Pekka Enberg <penberg@...helsinki.fi>,
Christoph Lameter <cl@...ux-foundation.org>,
Steven Rostedt <rostedt@...dmis.org>,
Frederic Weisbecker <fweisbec@...il.com>,
"linux-mm@...ck.org" <linux-mm@...ck.org>,
LKML <linux-kernel@...r.kernel.org>,
Eduard - Gabriel Munteanu <eduard.munteanu@...ux360.ro>
Subject: [PATCH 1/2] tracing: Define kmem_trace_alloc_notrace unconditionally
Always define kmem_trace_alloc_{,node}_notrace(), otherwise
perf-kmem will show wrong stats ifndef CONFIG_KMEMTRACE,
because a kmalloc() memory allocation may be traced by
both trace_kmalloc() and trace_kmem_cache_alloc().
Signed-off-by: Li Zefan <lizf@...fujitsu.com>
---
include/linux/slab_def.h | 24 ++----------------------
include/linux/slub_def.h | 27 +++------------------------
mm/slab.c | 12 ------------
mm/slub.c | 4 ----
4 files changed, 5 insertions(+), 62 deletions(-)
diff --git a/include/linux/slab_def.h b/include/linux/slab_def.h
index 850d057..1c9ce4b 100644
--- a/include/linux/slab_def.h
+++ b/include/linux/slab_def.h
@@ -109,21 +109,12 @@ extern struct cache_sizes malloc_sizes[];
void *kmem_cache_alloc(struct kmem_cache *, gfp_t);
void *__kmalloc(size_t size, gfp_t flags);
+void *kmem_cache_alloc_notrace(struct kmem_cache *cachep, gfp_t flags);
-#ifdef CONFIG_KMEMTRACE
-extern void *kmem_cache_alloc_notrace(struct kmem_cache *cachep, gfp_t flags);
-extern size_t slab_buffer_size(struct kmem_cache *cachep);
-#else
-static __always_inline void *
-kmem_cache_alloc_notrace(struct kmem_cache *cachep, gfp_t flags)
-{
- return kmem_cache_alloc(cachep, flags);
-}
static inline size_t slab_buffer_size(struct kmem_cache *cachep)
{
- return 0;
+ return cachep->buffer_size;
}
-#endif
static __always_inline void *kmalloc(size_t size, gfp_t flags)
{
@@ -165,20 +156,9 @@ found:
#ifdef CONFIG_NUMA
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
extern void *kmem_cache_alloc_node_notrace(struct kmem_cache *cachep,
gfp_t flags,
int nodeid);
-#else
-static __always_inline void *
-kmem_cache_alloc_node_notrace(struct kmem_cache *cachep,
- gfp_t flags,
- int nodeid)
-{
- return kmem_cache_alloc_node(cachep, flags, nodeid);
-}
-#endif
static __always_inline void *kmalloc_node(size_t size, gfp_t flags, int node)
{
diff --git a/include/linux/slub_def.h b/include/linux/slub_def.h
index 5ad70a6..5c5ca0c 100644
--- a/include/linux/slub_def.h
+++ b/include/linux/slub_def.h
@@ -215,18 +215,9 @@ static __always_inline struct kmem_cache *kmalloc_slab(size_t size)
#endif
void *kmem_cache_alloc(struct kmem_cache *, gfp_t);
+void *kmem_cache_alloc_notrace(struct kmem_cache *s, gfp_t gfpflags);
void *__kmalloc(size_t size, gfp_t flags);
-#ifdef CONFIG_KMEMTRACE
-extern void *kmem_cache_alloc_notrace(struct kmem_cache *s, gfp_t gfpflags);
-#else
-static __always_inline void *
-kmem_cache_alloc_notrace(struct kmem_cache *s, gfp_t gfpflags)
-{
- return kmem_cache_alloc(s, gfpflags);
-}
-#endif
-
static __always_inline void *kmalloc_large(size_t size, gfp_t flags)
{
unsigned int order = get_order(size);
@@ -265,20 +256,8 @@ static __always_inline void *kmalloc(size_t size, gfp_t flags)
#ifdef CONFIG_NUMA
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
-extern void *kmem_cache_alloc_node_notrace(struct kmem_cache *s,
- gfp_t gfpflags,
- int node);
-#else
-static __always_inline void *
-kmem_cache_alloc_node_notrace(struct kmem_cache *s,
- gfp_t gfpflags,
- int node)
-{
- return kmem_cache_alloc_node(s, gfpflags, node);
-}
-#endif
+void *kmem_cache_alloc_node_notrace(struct kmem_cache *s, gfp_t gfpflags,
+ int node);
static __always_inline void *kmalloc_node(size_t size, gfp_t flags, int node)
{
diff --git a/mm/slab.c b/mm/slab.c
index 7dfa481..e556380 100644
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -490,14 +490,6 @@ static void **dbg_userword(struct kmem_cache *cachep, void *objp)
#endif
-#ifdef CONFIG_KMEMTRACE
-size_t slab_buffer_size(struct kmem_cache *cachep)
-{
- return cachep->buffer_size;
-}
-EXPORT_SYMBOL(slab_buffer_size);
-#endif
-
/*
* Do not go above this order unless 0 objects fit into the slab.
*/
@@ -3558,13 +3550,11 @@ void *kmem_cache_alloc(struct kmem_cache *cachep, gfp_t flags)
}
EXPORT_SYMBOL(kmem_cache_alloc);
-#ifdef CONFIG_KMEMTRACE
void *kmem_cache_alloc_notrace(struct kmem_cache *cachep, gfp_t flags)
{
return __cache_alloc(cachep, flags, __builtin_return_address(0));
}
EXPORT_SYMBOL(kmem_cache_alloc_notrace);
-#endif
/**
* kmem_ptr_validate - check if an untrusted pointer might be a slab entry.
@@ -3621,7 +3611,6 @@ void *kmem_cache_alloc_node(struct kmem_cache *cachep, gfp_t flags, int nodeid)
}
EXPORT_SYMBOL(kmem_cache_alloc_node);
-#ifdef CONFIG_KMEMTRACE
void *kmem_cache_alloc_node_notrace(struct kmem_cache *cachep,
gfp_t flags,
int nodeid)
@@ -3630,7 +3619,6 @@ void *kmem_cache_alloc_node_notrace(struct kmem_cache *cachep,
__builtin_return_address(0));
}
EXPORT_SYMBOL(kmem_cache_alloc_node_notrace);
-#endif
static __always_inline void *
__do_kmalloc_node(size_t size, gfp_t flags, int node, void *caller)
diff --git a/mm/slub.c b/mm/slub.c
index 4996fc7..a1c8fe5 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -1754,13 +1754,11 @@ void *kmem_cache_alloc(struct kmem_cache *s, gfp_t gfpflags)
}
EXPORT_SYMBOL(kmem_cache_alloc);
-#ifdef CONFIG_KMEMTRACE
void *kmem_cache_alloc_notrace(struct kmem_cache *s, gfp_t gfpflags)
{
return slab_alloc(s, gfpflags, -1, _RET_IP_);
}
EXPORT_SYMBOL(kmem_cache_alloc_notrace);
-#endif
#ifdef CONFIG_NUMA
void *kmem_cache_alloc_node(struct kmem_cache *s, gfp_t gfpflags, int node)
@@ -1775,7 +1773,6 @@ void *kmem_cache_alloc_node(struct kmem_cache *s, gfp_t gfpflags, int node)
EXPORT_SYMBOL(kmem_cache_alloc_node);
#endif
-#ifdef CONFIG_KMEMTRACE
void *kmem_cache_alloc_node_notrace(struct kmem_cache *s,
gfp_t gfpflags,
int node)
@@ -1783,7 +1780,6 @@ void *kmem_cache_alloc_node_notrace(struct kmem_cache *s,
return slab_alloc(s, gfpflags, node, _RET_IP_);
}
EXPORT_SYMBOL(kmem_cache_alloc_node_notrace);
-#endif
/*
* Slow patch handling. This may still be called frequently since objects
--
1.6.3
--
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