ftrace: Update filter when tracing enabled in set_ftrace_filter()

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>

diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
index 853f6f0..a0dc0de 100644 (file)
--- a/kernel/trace/ftrace.c
+++ b/kernel/trace/ftrace.c
@@ -2869,6 +2869,10 @@ 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);