From: Peter Zijlstra ops->flags _should_ be 0 at this point, so setting the flag using bitwise or is a bit daft. Link: http://lkml.kernel.org/r/20171011080224.315585202@infradead.org Requested-by: Steven Rostedt Signed-off-by: Peter Zijlstra (Intel) Signed-off-by: Steven Rostedt (VMware) --- kernel/trace/trace_event_perf.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/trace/trace_event_perf.c b/kernel/trace/trace_event_perf.c index e73f9ab15939..55d6dff37daf 100644 --- a/kernel/trace/trace_event_perf.c +++ b/kernel/trace/trace_event_perf.c @@ -363,7 +363,7 @@ static int perf_ftrace_function_register(struct perf_event *event) { struct ftrace_ops *ops = &event->ftrace_ops; - ops->flags |= FTRACE_OPS_FL_RCU; + ops->flags = FTRACE_OPS_FL_RCU; ops->func = perf_ftrace_function_call; ops->private = (void *)(unsigned long)nr_cpu_ids; -- 2.13.2