From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.5 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 525B2C34047 for ; Wed, 19 Feb 2020 15:14:45 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 27CB22467D for ; Wed, 19 Feb 2020 15:14:45 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="AiWjSqqI" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727909AbgBSPOn (ORCPT ); Wed, 19 Feb 2020 10:14:43 -0500 Received: from bombadil.infradead.org ([198.137.202.133]:36046 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727857AbgBSPOh (ORCPT ); Wed, 19 Feb 2020 10:14:37 -0500 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20170209; h=Content-Type:MIME-Version:References: Subject:Cc:To:From:Date:Message-Id:Sender:Reply-To:Content-Transfer-Encoding: Content-ID:Content-Description:In-Reply-To; bh=/oBPWrG9EVgl4LEO/hSDsTUt0NUc1tA6jTJTcYoVfdU=; b=AiWjSqqIp3k2jloN1TiEdGcBcC Ft9vfrIO6/4JzY80jOuMOH4/b9yyPfMEjpycF9vqB9RIdd0CFqoB5aauBsvuycsY+XOaiRYGQQT8T nWI6apRhWMR1xfnAwPFaTiHGX3kAB/GNR6SNK4SsVLScTMT8gcR4EfgHd4SiYNIKa2iymLyxy6n32 qF/1vf8qD8U84MPHhMSMsZvqjo09CUQejocu2Nd9Qm7qxI2d4jn3YhZSpxlRzCeLWJnjKq3LSCIWY 4EH2tll0iqgHErsPd5X1ni2XOQ3Ei7AsckfJJ9HoRAezPSduwt4wu/2dXnkmuUDmEw4zukQnDE/UC /AAIy3uA==; Received: from j217100.upc-j.chello.nl ([24.132.217.100] helo=noisy.programming.kicks-ass.net) by bombadil.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1j4R39-000111-8o; Wed, 19 Feb 2020 15:14:07 +0000 Received: from hirez.programming.kicks-ass.net (hirez.programming.kicks-ass.net [192.168.1.225]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by noisy.programming.kicks-ass.net (Postfix) with ESMTPS id 045EE30782A; Wed, 19 Feb 2020 16:12:12 +0100 (CET) Received: by hirez.programming.kicks-ass.net (Postfix, from userid 0) id 960212B4D7B84; Wed, 19 Feb 2020 16:14:03 +0100 (CET) Message-Id: <20200219150745.183988025@infradead.org> User-Agent: quilt/0.65 Date: Wed, 19 Feb 2020 15:47:38 +0100 From: Peter Zijlstra 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, luto@kernel.org, tony.luck@intel.com, frederic@kernel.org, dan.carpenter@oracle.com, mhiramat@kernel.org Subject: [PATCH v3 14/22] perf,tracing: Allow function tracing when !RCU References: <20200219144724.800607165@infradead.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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;