tree de7780b1b6cff9c8f33c9de1240a0b19bea9aa94
parent ede55c9d78101fef0d8e620940a5163f14b02f29
author Li Zefan <lizf@cn.fujitsu.com> 1265787784 +0800
committer Steven Rostedt <rostedt@goodmis.org> 1265916758 -0500

ftrace: Allow to remove a single function from function graph filter

I don't see why we can only clear all functions from the filter.

After patching:

  # echo sys_open > set_graph_function
  # echo sys_close >> set_graph_function
  # cat set_graph_function
  sys_open
  sys_close
  # echo '!sys_close' >> set_graph_function
  # cat set_graph_function
  sys_open

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
LKML-Reference: <4B726388.2000408@cn.fujitsu.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>