From patchwork Thu Feb 22 10:04:29 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Maciej Wieczor-Retman X-Patchwork-Id: 13567007 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 25DA938DD9; Thu, 22 Feb 2024 10:05:16 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.18 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708596330; cv=none; b=ugEeAlSqU9nTUJcXBQ1eYwF+UpV35CmYw9LokH7OKG4knagU68IcW1q6P7Mbj6SfbqNrx7VF+qgE/2XecIIqjR6TifDOH2U8xcEZ+vSQMQB5kN6Kr/MrzTeQNXkvtdfyKEmjYEe2hm5kIz69tY/fFUUrUtld3ji70sbePpdnc2g= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708596330; c=relaxed/simple; bh=2UTZs7x3PMzSPqopk6ukhMebJaPmC5bK7YeG/3265o0=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=faF+WbILy40mvIGo7MYxZTSxABR+XLbkbFZ0HwvUgghlOZX+3FSmupro62/5/pTmHZiNh6DLEkVFOP14+UEUP1C4bduoFB6l4xfvs/bWUN1PwShWU3Hr+Z81FFm7f6Owvj59vrdtYvAV4y9utl/LIP1gtgvmOyNTsMIZSeETeRM= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=IkraqQS+; arc=none smtp.client-ip=198.175.65.18 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="IkraqQS+" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1708596321; x=1740132321; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=2UTZs7x3PMzSPqopk6ukhMebJaPmC5bK7YeG/3265o0=; b=IkraqQS+MrJ+KNiwACKQv7GKkXgWPeOKA7ADuavaD1XSbf9qEN0T26sd UsZkMGUQPYRYKJ9hFhJU45ro9JkIXALwPNqnvGhcH3sfLKWk8z0JJ4JU2 6rpx4AC8etMNaT4vHLmU5MyzvwRBOwxaj/qFww5xOezuOFpeRJglhyA8B m401pDPXkkRQdzqHtMhqjQyCatSCTUTiSMmFxJP2jzCfqxRe/A7hJnPZM BdjwAIp4oqdQnVNZFURolHqaz3e91Mi/RuRdB3e6C8qq2mrF2K7ssF6Zr oEYdw/QmlBf9clD6H3jNWxTHaPgg89eojyPRsdIpdLMKGMZzeOtMPsUHU g==; X-IronPort-AV: E=McAfee;i="6600,9927,10991"; a="2920717" X-IronPort-AV: E=Sophos;i="6.06,177,1705392000"; d="scan'208";a="2920717" Received: from orviesa007.jf.intel.com ([10.64.159.147]) by orvoesa110.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 22 Feb 2024 02:05:14 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.06,177,1705392000"; d="scan'208";a="5753936" Received: from ksulimow-mobl1.ger.corp.intel.com (HELO wieczorr-mobl1.intel.com) ([10.213.23.120]) by orviesa007-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 22 Feb 2024 02:05:12 -0800 From: Maciej Wieczor-Retman To: Fenghua Yu , Reinette Chatre , Shuah Khan Cc: ilpo.jarvinen@linux.intel.com, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org Subject: [PATCH v2 2/3] selftests/resctrl: Simplify cleanup in ctrl-c handler Date: Thu, 22 Feb 2024 11:04:29 +0100 Message-ID: <3a6639cd338a706bd2ed341aa6c717e1e79cc1f0.1708596015.git.maciej.wieczor-retman@intel.com> X-Mailer: git-send-email 2.43.2 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Ctrl-c handler isn't aware of what test is currently running. Because of that it executes all cleanups even if they aren't necessary. Since the ctrl-c handler uses the sa_sigaction system no parameters can be passed to it as function arguments. Add a global variable to make ctrl-c handler aware of the currently run test and only execute the correct cleanup callback. Signed-off-by: Maciej Wieczor-Retman --- Changelog v2: - Remove tests_cleanup() from resctrl.h. - Make current_test a const pointer only inside resctrl_val.c. (Ilpo) tools/testing/selftests/resctrl/resctrl.h | 3 +-- tools/testing/selftests/resctrl/resctrl_tests.c | 14 +++----------- tools/testing/selftests/resctrl/resctrl_val.c | 6 ++++-- 3 files changed, 8 insertions(+), 15 deletions(-) diff --git a/tools/testing/selftests/resctrl/resctrl.h b/tools/testing/selftests/resctrl/resctrl.h index 0f49df4961ea..826783b29c9d 100644 --- a/tools/testing/selftests/resctrl/resctrl.h +++ b/tools/testing/selftests/resctrl/resctrl.h @@ -153,7 +153,6 @@ int resctrl_val(const struct resctrl_test *test, const struct user_params *uparams, const char * const *benchmark_cmd, struct resctrl_val_param *param); -void tests_cleanup(void); void mbm_test_cleanup(void); void mba_test_cleanup(void); unsigned long create_bit_mask(unsigned int start, unsigned int len); @@ -162,7 +161,7 @@ int get_full_cbm(const char *cache_type, unsigned long *mask); int get_mask_no_shareable(const char *cache_type, unsigned long *mask); int get_cache_size(int cpu_no, const char *cache_type, unsigned long *cache_size); void ctrlc_handler(int signum, siginfo_t *info, void *ptr); -int signal_handler_register(void); +int signal_handler_register(const struct resctrl_test *test); void signal_handler_unregister(void); void cat_test_cleanup(void); unsigned int count_bits(unsigned long n); diff --git a/tools/testing/selftests/resctrl/resctrl_tests.c b/tools/testing/selftests/resctrl/resctrl_tests.c index 75fc49ba3efb..161f5365b4f0 100644 --- a/tools/testing/selftests/resctrl/resctrl_tests.c +++ b/tools/testing/selftests/resctrl/resctrl_tests.c @@ -75,19 +75,11 @@ static void cmd_help(void) printf("\t-h: help\n"); } -void tests_cleanup(void) -{ - mbm_test_cleanup(); - mba_test_cleanup(); - cmt_test_cleanup(); - cat_test_cleanup(); -} - -static int test_prepare(void) +static int test_prepare(const struct resctrl_test *test) { int res; - res = signal_handler_register(); + res = signal_handler_register(test); if (res) { ksft_print_msg("Failed to register signal handler\n"); return res; @@ -130,7 +122,7 @@ static void run_single_test(const struct resctrl_test *test, const struct user_p ksft_print_msg("Starting %s test ...\n", test->name); - if (test_prepare()) { + if (test_prepare(test)) { ksft_exit_fail_msg("Abnormal failure when preparing for the test\n"); return; } diff --git a/tools/testing/selftests/resctrl/resctrl_val.c b/tools/testing/selftests/resctrl/resctrl_val.c index 5a49f07a6c85..d572815436f3 100644 --- a/tools/testing/selftests/resctrl/resctrl_val.c +++ b/tools/testing/selftests/resctrl/resctrl_val.c @@ -62,6 +62,7 @@ struct imc_counter_config { static char mbm_total_path[1024]; static int imcs; static struct imc_counter_config imc_counters_config[MAX_IMCS][2]; +const struct resctrl_test *current_test; void membw_initialize_perf_event_attr(int i, int j) { @@ -472,7 +473,7 @@ void ctrlc_handler(int signum, siginfo_t *info, void *ptr) if (bm_pid) kill(bm_pid, SIGKILL); umount_resctrlfs(); - tests_cleanup(); + current_test->cleanup(); ksft_print_msg("Ending\n\n"); exit(EXIT_SUCCESS); @@ -482,13 +483,14 @@ void ctrlc_handler(int signum, siginfo_t *info, void *ptr) * Register CTRL-C handler for parent, as it has to kill * child process before exiting. */ -int signal_handler_register(void) +int signal_handler_register(const struct resctrl_test *test) { struct sigaction sigact = {}; int ret = 0; bm_pid = 0; + current_test = test; sigact.sa_sigaction = ctrlc_handler; sigemptyset(&sigact.sa_mask); sigact.sa_flags = SA_SIGINFO;