* [06/19] tracing: add notrace to linkage.h
@ 2008-02-10 7:20 Ingo Molnar
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From: Ingo Molnar @ 2008-02-10 7:20 UTC (permalink / raw)
To: linux-kernel; +Cc: Linus Torvalds, Andrew Morton, Steven Rostedt
From: Ingo Molnar <mingo@elte.hu>
notrace signals that a function should not be traced. Most of the
time this is used by tracers to annotate code that cannot be
traced - it's in a volatile state (such as in user vdso context
or NMI context) or it's in the tracer internals.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
include/linux/linkage.h | 2 ++
1 file changed, 2 insertions(+)
Index: linux/include/linux/linkage.h
===================================================================
--- linux.orig/include/linux/linkage.h
+++ linux/include/linux/linkage.h
@@ -3,6 +3,8 @@
#include <asm/linkage.h>
+#define notrace __attribute__((no_instrument_function))
+
#ifdef __cplusplus
#define CPP_ASMLINKAGE extern "C"
#else
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2008-02-10 7:20 [06/19] tracing: add notrace to linkage.h Ingo Molnar
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