Messages in this thread Patch in this message |  | | | Date | Wed, 01 Feb 2012 12:55:53 -0800 | | From | Greg KH <> | | Subject | [13/65] ftrace: Update filter when tracing enabled in set_ftrace_filter() |
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3.0-stable review patch. If anyone has any objections, please let me know.
------------------ From: Steven Rostedt <srostedt@redhat.com>
commit 072126f4529196f71a97960248bca54fd4554c2d upstream.
Currently, if set_ftrace_filter() is called when the ftrace_ops is active, the function filters will not be updated. They will only be updated when tracing is disabled and re-enabled.
Update the functions immediately during set_ftrace_filter().
Signed-off-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- kernel/trace/ftrace.c | 4 ++++ 1 file changed, 4 insertions(+) --- a/kernel/trace/ftrace.c +++ b/kernel/trace/ftrace.c @@ -2901,6 +2901,10 @@ ftrace_set_regex(struct ftrace_ops *ops, mutex_lock(&ftrace_lock); ret = ftrace_hash_move(ops, enable, orig_hash, hash); + if (!ret && ops->flags & FTRACE_OPS_FL_ENABLED + && ftrace_enabled) + ftrace_run_update_code(FTRACE_ENABLE_CALLS); + mutex_unlock(&ftrace_lock); mutex_unlock(&ftrace_regex_lock);
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