linux-kernel - [PATCH] tracing: mark get_parent

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Message-ID: <49D458B1.5000703@cn.fujitsu.com>
Date:	Thu, 02 Apr 2009 14:18:25 +0800
From:	Lai Jiangshan <laijs@...fujitsu.com>
To:	Steven Rostedt <srostedt@...hat.com>
CC:	Ingo Molnar <mingo@...e.hu>, LKML <linux-kernel@...r.kernel.org>,
	Frederic Weisbecker <fweisbec@...il.com>
Subject: [PATCH] tracing: mark get_parent_ip() notrace


Impact: remove redundancy tracing log

When tracer is "function" or "function_graph", too much
"get_parent_ip" are recorded in ring_buffer.

Signed-off-by: Lai Jiangshan <laijs@...fujitsu.com>
---
diff --git a/kernel/sched.c b/kernel/sched.c
index 706517c..a0ec10c 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -4860,7 +4860,7 @@ void scheduler_tick(void)
 #endif
 }
 
-unsigned long get_parent_ip(unsigned long addr)
+notrace unsigned long get_parent_ip(unsigned long addr)
 {
 	if (in_lock_functions(addr)) {
 		addr = CALLER_ADDR2;


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