From mboxrd@z Thu Jan 1 00:00:00 1970 From: Peter Zijlstra Subject: [PATCH v2 9/9] perf,tracing: Allow function tracing when !RCU Date: Wed, 12 Feb 2020 22:01:48 +0100 Message-ID: <20200212210750.312024711@infradead.org> References: <20200212210139.382424693@infradead.org> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Return-path: Received: from merlin.infradead.org ([205.233.59.134]:33528 "EHLO merlin.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727548AbgBLVOT (ORCPT ); Wed, 12 Feb 2020 16:14:19 -0500 Sender: linux-arch-owner@vger.kernel.org List-ID: To: linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org, rostedt@goodmis.org Cc: peterz@infradead.org, mingo@kernel.org, joel@joelfernandes.org, gregkh@linuxfoundation.org, gustavo@embeddedor.com, tglx@linutronix.de, paulmck@kernel.org, josh@joshtriplett.org, mathieu.desnoyers@efficios.com, jiangshanlai@gmail.com Since perf is now able to deal with !rcu_is_watching() contexts, remove the restraint. Signed-off-by: Peter Zijlstra (Intel) --- 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; ops->func = perf_ftrace_function_call; ops->private = (void *)(unsigned long)nr_cpu_ids;