linux-kernel - [08/19] ftrace: annotate core code that should not be traced

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Date:	Sun, 10 Feb 2008 08:20:26 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	linux-kernel@...r.kernel.org
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@....com.au>,
	Steven Rostedt <rostedt@...dmis.org>
Subject: [08/19] ftrace: annotate core code that should not be traced

From: Arnaldo Carvalho de Melo <acme@...stprotocols.net>

Mark with "notrace" functions in core code that should not be
traced.  The "notrace" attribute will prevent gcc from adding
a call to ftrace on the annotated funtions.

Signed-off-by: Arnaldo Carvalho de Melo <acme@...stprotocols.net>
Signed-off-by: Steven Rostedt <srostedt@...hat.com>
Signed-off-by: Ingo Molnar <mingo@...e.hu>
---
 lib/smp_processor_id.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Index: linux/lib/smp_processor_id.c
===================================================================
--- linux.orig/lib/smp_processor_id.c
+++ linux/lib/smp_processor_id.c
@@ -7,7 +7,7 @@
 #include <linux/kallsyms.h>
 #include <linux/sched.h>
 
-unsigned int debug_smp_processor_id(void)
+notrace unsigned int debug_smp_processor_id(void)
 {
 	unsigned long preempt_count = preempt_count();
 	int this_cpu = raw_smp_processor_id();
--
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