From: Li Zefan <lizf@cn.fujitsu.com>
Date: Tue, 8 Dec 2009 03:15:11 +0000 (+0800)
Subject: ftrace: Return EINVAL when writing invalid val to set_ftrace_filter
X-Git-Tag: v2.6.33-rc1~52^2~12
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=311d16da575f53c3367099579736c1d233efe0dc;p=pandora-kernel.git

ftrace: Return EINVAL when writing invalid val to set_ftrace_filter

Currently it doesn't warn user on invald value:

 # echo nonexist_symbol > set_ftrace_filter
or:
 # echo 'nonexist_symbol:mod:fuse' > set_ftrace_filter

Better make it return failure.

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
LKML-Reference: <4B1DC4BF.2070003@cn.fujitsu.com>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
---

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