From nobody Fri Dec 19 14:46:07 2025 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 7A6F5C4167B for ; Mon, 11 Dec 2023 12:19:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1343495AbjLKMTJ (ORCPT ); Mon, 11 Dec 2023 07:19:09 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59266 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234895AbjLKMTD (ORCPT ); Mon, 11 Dec 2023 07:19:03 -0500 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.12]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 79799D5; Mon, 11 Dec 2023 04:19:09 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1702297150; x=1733833150; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=4CfsvVmXuEt7o9BsBWAlVT1iOHdDJykjEbaX1Jbwtjg=; b=I8dldixLKtBSGGTx2XATdQfnAav5qFr7YZIULN7gM+mPJd0dKEOnvlbB wYsWhsURviFP6sos54Q7syhHmjxUgPB23s9XiS3FxOyGxUWzHHi+zBgrs yUSKcB8ybmdw+A12qVfaXlsO36Le4GnZ2AOfMJ+qSUbo2TLD87xshhOOD cx1zjXNMf3kp92vvMybOGGQT7zdK4Ek6xpBEkIYGzAGmpNiLHFBdqk1+m jzsKMBMr2KCouGBHGAlUcFjbOqayhGNkQKz3ChCKj5HwXk24pc2BjHvce mgmd6qmRXQc+6hJkXe+7CGyf+b1dn18jJv7OkivNkRLy2jmjh7NE1CVkA Q==; X-IronPort-AV: E=McAfee;i="6600,9927,10920"; a="1757811" X-IronPort-AV: E=Sophos;i="6.04,267,1695711600"; d="scan'208";a="1757811" Received: from fmsmga005.fm.intel.com ([10.253.24.32]) by orvoesa104.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 Dec 2023 04:19:09 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10920"; a="1104461042" X-IronPort-AV: E=Sophos;i="6.04,267,1695711600"; d="scan'208";a="1104461042" Received: from ijarvine-desk1.ger.corp.intel.com (HELO localhost) ([10.246.50.188]) by fmsmga005-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 Dec 2023 04:19:04 -0800 From: =?UTF-8?q?Ilpo=20J=C3=A4rvinen?= To: linux-kselftest@vger.kernel.org, Reinette Chatre , Shuah Khan , Shaopeng Tan , =?UTF-8?q?Maciej=20Wiecz=C3=B3r-Retman?= , Fenghua Yu Cc: linux-kernel@vger.kernel.org, =?UTF-8?q?Ilpo=20J=C3=A4rvinen?= Subject: [PATCH v3 03/29] selftests/resctrl: Don't use ctrlc_handler() outside signal handling Date: Mon, 11 Dec 2023 14:18:00 +0200 Message-Id: <20231211121826.14392-4-ilpo.jarvinen@linux.intel.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20231211121826.14392-1-ilpo.jarvinen@linux.intel.com> References: <20231211121826.14392-1-ilpo.jarvinen@linux.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org perf_event_open_llc_miss() calls ctrlc_handler() to cleanup if perf_event_open() returns an error. Those cleanups, however, are not the responsibility of perf_event_open_llc_miss() and it thus interferes unnecessarily with the usual cleanup pattern. Worse yet, ctrlc_handler() calls exit() in the end preventing the ordinary cleanup done in the calling function from executing. ctrlc_handler() should only be used as a signal handler, not during normal error handling. Remove call to ctrlc_handler() from perf_event_open_llc_miss(). As unmounting resctrlfs and test cleanup are already handled properly by error rollbacks in the calling functions, no other changes are necessary. Suggested-by: Reinette Chatre Signed-off-by: Ilpo J=C3=A4rvinen Reviewed-by: Reinette Chatre --- v3: - Corrected typo in the changelog --- tools/testing/selftests/resctrl/cache.c | 1 - 1 file changed, 1 deletion(-) diff --git a/tools/testing/selftests/resctrl/cache.c b/tools/testing/selfte= sts/resctrl/cache.c index 1fa4b86e1459..6d60a2f1b3aa 100644 --- a/tools/testing/selftests/resctrl/cache.c +++ b/tools/testing/selftests/resctrl/cache.c @@ -41,7 +41,6 @@ static int perf_event_open_llc_miss(pid_t pid, int cpu_no) PERF_FLAG_FD_CLOEXEC); if (fd_lm =3D=3D -1) { ksft_perror("Error opening leader"); - ctrlc_handler(0, NULL, NULL); return -1; } =20 --=20 2.30.2