From: Steven Rostedt Date: Wed, 13 Jul 2011 19:08:31 +0000 (-0400) Subject: ftrace: Update filter when tracing enabled in set_ftrace_filter() X-Git-Tag: firefly_0821_release~7541^2~1868 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=2ffe3ccf80eba0ac9ca71c41e7357d92f1c08fc3;p=firefly-linux-kernel-4.4.55.git ftrace: Update filter when tracing enabled in set_ftrace_filter() 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 Signed-off-by: Greg Kroah-Hartman --- diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c index 1eef6cf38d51..6b1e596bd3a0 100644 --- a/kernel/trace/ftrace.c +++ b/kernel/trace/ftrace.c @@ -2901,6 +2901,10 @@ ftrace_set_regex(struct ftrace_ops *ops, unsigned char *buf, int len, 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);