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[2620:137:e000::1:20]) by mx.google.com with ESMTP id j15-20020a170902da8f00b001b061af0599si2002615plx.340.2023.06.08.20.07.34; Thu, 08 Jun 2023 20:07:48 -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 S237997AbjFIDE0 (ORCPT + 99 others); Thu, 8 Jun 2023 23:04:26 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52358 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236588AbjFIDEU (ORCPT ); Thu, 8 Jun 2023 23:04:20 -0400 Received: from mail-pf1-f194.google.com (mail-pf1-f194.google.com [209.85.210.194]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9857130E6; Thu, 8 Jun 2023 20:04:18 -0700 (PDT) Received: by mail-pf1-f194.google.com with SMTP id d2e1a72fcca58-653f9c7b3e4so1022842b3a.2; Thu, 08 Jun 2023 20:04:18 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1686279858; x=1688871858; 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=59GQ9AhyFkzfBGxyjIZEJrXmZrr4sm+i3SWD90zj3wY=; b=aYtf820ZP48hIQXbtw13gT8rttPjTyonTrXdmsQYyOESNUFwZf2bcDTTLxRn1Q+3lG pIqDx3w6LjJbgDhOGGPW48m5mnlliYC6in20y1sFUR6zSfxYue2ULHmYhQcVN7W/PbHW PLQKiifrXvbKfcn4e4/fXZqGleCRQYQyM7NIHqRgFj17ixUZ8QXppQiGpAEkQamyUa8q bI7M1qEzfGwl807EJXPZ1WLgQqARQb7FbHQ9j0TxhuZ9/0iOkPpYkSOL91nLaHkwqzRP h46DfyaB1z8S0TRbYIYI/K2UJucpypFieu2iRikQMaPCDNGMLtyYtt8LeRmrWjj3IXqx VT7A== X-Gm-Message-State: AC+VfDyZ5NmSJsv6BDPPbXLI+DN3Cpis4Mz6s9hl/MovTIsjc/fcLNWq xtPH4BFJdEoRIJ+f24VjJg== X-Received: by 2002:a05:6a00:1911:b0:663:8255:8cc3 with SMTP id y17-20020a056a00191100b0066382558cc3mr77833pfi.7.1686279857968; Thu, 08 Jun 2023 20:04:17 -0700 (PDT) Received: from localhost.localdomain ([116.128.244.169]) by smtp.gmail.com with ESMTPSA id a16-20020a62bd10000000b0065ecdefa57fsm1713778pff.0.2023.06.08.20.04.15 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 08 Jun 2023 20:04:17 -0700 (PDT) From: sunliming To: mhiramat@kernel.org, beaub@linux.microsoft.com, rostedt@goodmis.org, shuah@kernel.org Cc: linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, kelulanainsley@gmail.com, sunliming Subject: [PATCH v2 0/3] tracing/user_events: Fix incorrect return value for Date: Fri, 9 Jun 2023 11:02:59 +0800 Message-Id: <20230609030302.1278716-1-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?1768192808911366497?= X-GMAIL-MSGID: =?utf-8?q?1768192808911366497?= Now the writing operation return the count of writes whether events are enabled or disabled. Fix this by just return -ENOENT when events are disabled. v1 -> v2: - Change the returh vale from -EFAULT to -ENOENT 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(-)