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 24032EB64DA for ; Fri, 23 Jun 2023 01:33:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230094AbjFWBdl (ORCPT ); Thu, 22 Jun 2023 21:33:41 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36580 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229907AbjFWBdi (ORCPT ); Thu, 22 Jun 2023 21:33:38 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3EB151FE6 for ; Thu, 22 Jun 2023 18:33:38 -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 C7B8D6192B for ; Fri, 23 Jun 2023 01:33:37 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 35BD7C433C0; Fri, 23 Jun 2023 01:33:37 +0000 (UTC) Received: from rostedt by gandalf with local (Exim 4.96) (envelope-from ) id 1qCVg7-002M6a-32; Thu, 22 Jun 2023 21:33:35 -0400 Message-ID: <20230623013152.037225511@goodmis.org> User-Agent: quilt/0.66 Date: Thu, 22 Jun 2023 21:31:52 -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 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: 131966049074b8025a8cba0e99d3745311fcef5b 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 | 7 +++++++ 2 files changed, 9 insertions(+), 1 deletion(-)