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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4AF01EB64D7 for ; Wed, 28 Jun 2023 14:06:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232767AbjF1OF7 (ORCPT ); Wed, 28 Jun 2023 10:05:59 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51498 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232446AbjF1OET (ORCPT ); Wed, 28 Jun 2023 10:04:19 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0432D30E6 for ; Wed, 28 Jun 2023 07:03:41 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 906AC61343 for ; Wed, 28 Jun 2023 14:03:40 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 033F3C433C9; Wed, 28 Jun 2023 14:03:39 +0000 (UTC) Received: from rostedt by gandalf with local (Exim 4.96) (envelope-from ) id 1qEVli-002pgk-2C; Wed, 28 Jun 2023 10:03:38 -0400 Message-ID: <20230628125448.007243475@goodmis.org> User-Agent: quilt/0.66 Date: Wed, 28 Jun 2023 08:54:48 -0400 From: Steven Rostedt To: linux-kernel@vger.kernel.org Cc: Masami Hiramatsu , Mark Rutland , Andrew Morton Subject: [for-linus][PATCH 0/3] tracing: Final updates for 6.4+ Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The user events write currently returns the size of what was suppose to be written when tracing is disabled and nothing was written. Instead, behave like trace_marker and return -EBADF, as that is what is returned if a file is opened for read only, Before user events become an ABI, fix the return value of the write operation when tracing is disabled. It should not return an error, but simply report it wrote zero bytes. Just like any other write operation that doesn't write but does not "fail". This also includes test cases for this use case. git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace.git trace/urgent Head SHA1: e155047e53d25f09d055c08ae9d6c269520e90d8 sunliming (3): tracing/user_events: Fix incorrect return value for writing operation when events are disabled selftests/user_events: Enable the event before write_fault test in ftrace self-test selftests/user_events: Add test cases when event is disabled ---- kernel/trace/trace_events_user.c | 3 ++- tools/testing/selftests/user_events/ftrace_test.c | 8 ++++++++ 2 files changed, 10 insertions(+), 1 deletion(-)