From: Ingo Molnar <mingo@elte.hu>
Date: Mon, 12 May 2008 19:20:41 +0000 (+0200)
Subject: tracing: add notrace to linkage.h
X-Git-Tag: v2.6.27-rc1~1102^2^2~1^2~155
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ffdc1a09ae7e2cbd714a446ee38a27f625b5f1c8;p=linux-2.6

tracing: add notrace to linkage.h

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>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---

diff --git a/include/linux/linkage.h b/include/linux/linkage.h
index 2119610b24..14f329c64b 100644
--- a/include/linux/linkage.h
+++ b/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