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[2620:137:e000::1:20]) by mx.google.com with ESMTP id me7-20020a17090b17c700b0025bae648cfcsi4003991pjb.176.2023.06.20.23.27.45; Tue, 20 Jun 2023 23:27:58 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230013AbjFUGIl (ORCPT + 99 others); Wed, 21 Jun 2023 02:08:41 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50890 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229875AbjFUGIj (ORCPT ); Wed, 21 Jun 2023 02:08:39 -0400 Received: from mail-ot1-f65.google.com (mail-ot1-f65.google.com [209.85.210.65]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9C8D51726; Tue, 20 Jun 2023 23:08:37 -0700 (PDT) Received: by mail-ot1-f65.google.com with SMTP id 46e09a7af769-6b46831fd13so3306810a34.3; Tue, 20 Jun 2023 23:08:37 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1687327717; x=1689919717; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=NQu7yQb5csSSHJ7nBU/IUnjQhId+NDJJip5y+n97vEg=; b=LeIPVXIw8CD52fqluKOfPkV9HgdOtVWFjkZ4bmOcKJMgJSXrPAwy8vuv07vT5UEoVD WC0dXj2v8KzPzeFFPgpS31+tXJRoU4wGwV5iFpm1MNloTdrVKYZyX+a0zbe1C0Lc8g/d r1hKyCy6m75RhBabwBhIGddbBwJtEH6EHylIQQqhVb8wGfxxxWZkj89YAYP8TNSRj+Q7 MLOqArC6h6ToRSoy9QsExCxuvFU8g7YqHBzbOnYnamZ4leQ7FU8u+NIgIUsHbG5i3hj9 Dy1MQQ6W3BbYQ1N3VMicwC5bC1X9HoLQOBHjaFNAU4A/L/QAU924uB/csXZ5bnb4G2s4 J9uw== X-Gm-Message-State: AC+VfDyoNIFuG/JLkQ2h1Smwxyl6yzc/B+A2Qmm/sK8FaT6+IKIok58z NKrUEgdM3Njs0ItTcC90MA== X-Received: by 2002:a05:6358:ce24:b0:131:22f2:8185 with SMTP id gt36-20020a056358ce2400b0013122f28185mr426093rwb.12.1687327715912; Tue, 20 Jun 2023 23:08:35 -0700 (PDT) Received: from localhost.localdomain ([116.128.244.169]) by smtp.gmail.com with ESMTPSA id d28-20020a630e1c000000b00528da88275bsm2323621pgl.47.2023.06.20.23.08.33 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 20 Jun 2023 23:08:35 -0700 (PDT) From: sunliming To: rostedt@goodmis.org, mhiramat@kernel.org, beaub@linux.microsoft.com Cc: kelulanainsley@gmail.com, linux-trace-kernel@vger.kernel.org, linux-kernel@vger.kernel.org, sunliming Subject: [PATCH v3 0/3] tracing/user_events: Fix incorrect return value for Date: Wed, 21 Jun 2023 14:08:23 +0800 Message-Id: <20230621060827.151564-1-sunliming@kylinos.cn> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 X-Spam-Status: No, score=-1.4 required=5.0 tests=BAYES_00, FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM,HEADER_FROM_DIFFERENT_DOMAINS, RCVD_IN_DNSWL_NONE,RCVD_IN_MSPIKE_H3,RCVD_IN_MSPIKE_WL,SPF_HELO_NONE, SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1769292565762889348?= X-GMAIL-MSGID: =?utf-8?q?1769292565762889348?= Now the writing operation return the count of writes regardless of whether events are enabled or disabled. Fix this by just return zero when events are disabled. v2 -> v3: - Change the return value from -ENOENT to zero v1 -> v2: - Change the return value from -EFAULT to -ENOENT sunliming (3): tracing/user_events: Fix incorrect return value for writing operation when events are disable selftests/user_events: Enable the event before write_fault test in ftrace self-test selftests/user_events: Add test cases when event is diabled kernel/trace/trace_events_user.c | 3 ++- tools/testing/selftests/user_events/ftrace_test.c | 7 +++++++ 2 files changed, 9 insertions(+), 1 deletion(-)