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tracing, slab: Fix no callsite ifndef CONFIG_KMEMTRACE

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For slab, if CONFIG_KMEMTRACE and CONFIG_DEBUG_SLAB are not set,
__do_kmalloc() will not track callers:

 # ./perf record -f -a -R -e kmem:kmalloc
 ^C
 # ./perf trace
 ...
          perf-2204  [000]   147.376774: kmalloc: call_site=c0529d2d ...
          perf-2204  [000]   147.400997: kmalloc: call_site=c0529d2d ...
          Xorg-1461  [001]   147.405413: kmalloc: call_site=0 ...
          Xorg-1461  [001]   147.405609: kmalloc: call_site=0 ...
       konsole-1776  [001]   147.405786: kmalloc: call_site=0 ...

Signed-off-by: Li Zefan <[email protected]>
Reviewed-by: Pekka Enberg <[email protected]>
Cc: Christoph Lameter <[email protected]>
Cc: Steven Rostedt <[email protected]>
Cc: Frederic Weisbecker <[email protected]>
Cc: [email protected] <[email protected]>
Cc: Eduard - Gabriel Munteanu <[email protected]>
LKML-Reference: <[email protected]>
Signed-off-by: Ingo Molnar <[email protected]>
This commit is contained in:
Li Zefan 2009-12-11 15:45:50 +08:00 • committed by Ingo Molnar
commit 0bb38a5cde
1 changed files with 3 additions and 3 deletions
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6
mm/slab.c
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@ -3649,7 +3649,7 @@ __do_kmalloc_node(size_t size, gfp_t flags, int node, void *caller)
return ret;
}
#if defined(CONFIG_DEBUG_SLAB) || defined(CONFIG_KMEMTRACE)
#if defined(CONFIG_DEBUG_SLAB) || defined(CONFIG_TRACING)
void *__kmalloc_node(size_t size, gfp_t flags, int node)
{
return __do_kmalloc_node(size, flags, node,
@ -3669,7 +3669,7 @@ void *__kmalloc_node(size_t size, gfp_t flags, int node)
return __do_kmalloc_node(size, flags, node, NULL);
}
EXPORT_SYMBOL(__kmalloc_node);
#endif /* CONFIG_DEBUG_SLAB */
#endif /* CONFIG_DEBUG_SLAB || CONFIG_TRACING */
#endif /* CONFIG_NUMA */
/**
@ -3701,7 +3701,7 @@ static __always_inline void *__do_kmalloc(size_t size, gfp_t flags,
}
#if defined(CONFIG_DEBUG_SLAB) || defined(CONFIG_KMEMTRACE)
#if defined(CONFIG_DEBUG_SLAB) || defined(CONFIG_TRACING)
void *__kmalloc(size_t size, gfp_t flags)
{
return __do_kmalloc(size, flags, __builtin_return_address(0));