On (20/02/14 11:28), Sergey Senozhatsky wrote:

On (20/02/12 22:01), Peter Zijlstra wrote:

quoted

Since perf is now able to deal with !rcu_is_watching() contexts,
remove the restraint.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
---
 kernel/trace/trace_event_perf.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/kernel/trace/trace_event_perf.c
+++ b/kernel/trace/trace_event_perf.c

@@ -477,7 +477,7 @@ static int perf_ftrace_function_register
 {
 	struct ftrace_ops *ops = &event->ftrace_ops;
 
-	ops->flags   = FTRACE_OPS_FL_RCU;
+	ops->flags   = 0;

FTRACE_OPS_FL_ENABLED?

No, never mind.

	-ss