ftrace: Return EINVAL when writing invalid val to set_ftrace_filter

Browse source

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>

...

This commit is contained in:

Li Zefan 2009-12-08 11:15:11 +08:00 • committed by Frederic Weisbecker

parent 3b8e427381

commit 311d16da57

1 changed files with 16 additions and 6 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

22

kernel/trace/ftrace.c

View file