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

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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>

...

This commit is contained in:

Li Zefan 2010-02-10 15:43:04 +08:00 • committed by Steven Rostedt

parent ede55c9d78

commit c7c6b1fe9f

2 changed files with 33 additions and 21 deletions

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51

kernel/trace/ftrace.c

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3

kernel/trace/trace.h

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