From: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Date: Thu, 23 Jul 2009 04:01:22 +0000 (+0800)
Subject: tracing/ksym_tracer: support quick clear for ksym_trace_filter -- v2
X-Git-Tag: v2.6.33-rc1~399^2~146^2~18
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=75e33751ca8bbb72dd6f1a74d2810ddc8cbe4bdf;p=pandora-kernel.git

tracing/ksym_tracer: support quick clear for ksym_trace_filter -- v2

It's rather boring to clear symbol one by one in ksym_trace_filter
file, so, this patch will let ksym_trace_filter file support quickly
clear all break points. We can write "0" to this file and it will clear
all symbols

for example:
 # cat ksym_trace_filter
 ksym_filter_head:rw-
 global_trace:rw-
 # echo 0 > ksym_trace_filter
 # cat ksym_trace_filter
 #

Changelog v1->v2:
Add other ways to clear all breakpoints by writing NULL or "*:---"
to ksym_trace_filter file base on K.Prasad's suggestion

Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
LKML-Reference: <4A67E092.3080202@cn.fujitsu.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
---

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