From patchwork Wed Apr 12 13:21:21 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Ilpo_J=C3=A4rvinen?= X-Patchwork-Id: 13209194 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 312D5C7619A for ; Wed, 12 Apr 2023 13:25:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229506AbjDLNZj (ORCPT ); Wed, 12 Apr 2023 09:25:39 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52234 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231679AbjDLNY5 (ORCPT ); Wed, 12 Apr 2023 09:24:57 -0400 Received: from mga02.intel.com (mga02.intel.com [134.134.136.20]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1ADF8AD0C; Wed, 12 Apr 2023 06:24:32 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1681305872; x=1712841872; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=6fPERw8xx2Xr/bpeJtD31KQUvwWb31+w7KcyfDbeq3w=; b=KfwhK0iJrDd6vpWr5nn9lA6m8r0E7ZDSsogWCG8H1Yt8OMZWAUBdQjZs eBe/8aFZ6IR03IVNZhmG/XN625KzVubU1Bcl5pHy3+CtNka8vD4L/9mdM 1NfhA3RNGD/YwbzdFOB297KpNf0JQH7p+VIv0G5vaSrfqgdabmREZvbUu Nppkz/ZeEtmCwsHcbleK+aW4QOn9ZasRmfuinV619Oma1GJcGMDWftSBp soLg2OwsJq5KKt9lya20jr6j0mz4FhVQDno0qH6AXoHIgl5KzaOeburYs ZUDBi85vj6zp+MyJiejuNyJGnUkEKiSUR3WLLL19jqaZhJy6BV+RE4mCf g==; X-IronPort-AV: E=McAfee;i="6600,9927,10678"; a="332590324" X-IronPort-AV: E=Sophos;i="5.98,339,1673942400"; d="scan'208";a="332590324" Received: from orsmga003.jf.intel.com ([10.7.209.27]) by orsmga101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 12 Apr 2023 06:22:59 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10678"; a="639230156" X-IronPort-AV: E=Sophos;i="5.98,339,1673942400"; d="scan'208";a="639230156" Received: from chanse1-mobl2.ger.corp.intel.com (HELO ijarvine-MOBL2.ger.corp.intel.com) ([10.251.213.80]) by orsmga003-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 12 Apr 2023 06:22:56 -0700 From: =?utf-8?q?Ilpo_J=C3=A4rvinen?= To: linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org, Reinette Chatre , Fenghua Yu , Shuah Khan Cc: Shaopeng Tan , =?utf-8?q?Ilpo_J=C3=A4rvinen?= Subject: [PATCH 21/22] selftests/resctrl: Split show_cache_info() to test specific and generic parts Date: Wed, 12 Apr 2023 16:21:21 +0300 Message-Id: <20230412132122.29452-22-ilpo.jarvinen@linux.intel.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20230412132122.29452-1-ilpo.jarvinen@linux.intel.com> References: <20230412132122.29452-1-ilpo.jarvinen@linux.intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org show_cache_info() attempts to do calculate the results and provide generic cache information. It makes hard to alter the pass/fail conditions. Separate the the test specific checks into CAT and CMT test files and leave only the generic information part into show_cache_info(). Signed-off-by: Ilpo Järvinen --- tools/testing/selftests/resctrl/cache.c | 40 ++++------------------ tools/testing/selftests/resctrl/cat_test.c | 30 ++++++++++++++-- tools/testing/selftests/resctrl/cmt_test.c | 32 +++++++++++++++-- tools/testing/selftests/resctrl/resctrl.h | 6 ++-- 4 files changed, 65 insertions(+), 43 deletions(-) diff --git a/tools/testing/selftests/resctrl/cache.c b/tools/testing/selftests/resctrl/cache.c index 225ba589d230..becca3ce4f9e 100644 --- a/tools/testing/selftests/resctrl/cache.c +++ b/tools/testing/selftests/resctrl/cache.c @@ -283,43 +283,17 @@ int cat_val(struct resctrl_val_param *param) } /* - * show_cache_info: show cache test result information - * @sum_llc_val: sum of LLC cache result data + * show_cache_info: show generic cache test information * @no_of_bits: number of bits - * @cache_span: cache span in bytes for CMT or in lines for CAT - * @max_diff: max difference - * @max_diff_percent: max difference percentage - * @num_of_runs: number of runs - * @platform: show test information on this platform - * @cmt: CMT test or CAT test - * - * Return: 0 on success. non-zero on failure. + * @avg_llc_val: avg of LLC cache result data + * @cache_span: cache span + * @lines: cache span in lines or bytes */ -int show_cache_info(unsigned long sum_llc_val, int no_of_bits, - unsigned long cache_span, unsigned long max_diff, - unsigned long max_diff_percent, unsigned long num_of_runs, - bool platform, bool cmt) +void show_cache_info(int no_of_bits, unsigned long avg_llc_val, + unsigned long cache_span, bool lines) { - unsigned long avg_llc_val = 0; - float diff_percent; - long avg_diff = 0; - int ret; - - avg_llc_val = sum_llc_val / num_of_runs; - avg_diff = (long)abs(cache_span - avg_llc_val); - diff_percent = ((float)cache_span - avg_llc_val) / cache_span * 100; - - ret = platform && abs((int)diff_percent) > max_diff_percent && - (cmt ? (abs(avg_diff) > max_diff) : true); - - ksft_print_msg("%s Check cache miss rate within %d%%\n", - ret ? "Fail:" : "Pass:", max_diff_percent); - - ksft_print_msg("Percent diff=%d\n", abs((int)diff_percent)); ksft_print_msg("Number of bits: %d\n", no_of_bits); ksft_print_msg("Average LLC val: %lu\n", avg_llc_val); - ksft_print_msg("Cache span (%s): %lu\n", cmt ? "bytes" : "lines", + ksft_print_msg("Cache span (%s): %lu\n", !lines ? "bytes" : "lines", cache_span); - - return ret; } diff --git a/tools/testing/selftests/resctrl/cat_test.c b/tools/testing/selftests/resctrl/cat_test.c index cfad7e488340..d2b7369ad00e 100644 --- a/tools/testing/selftests/resctrl/cat_test.c +++ b/tools/testing/selftests/resctrl/cat_test.c @@ -41,6 +41,30 @@ static int cat_setup(struct resctrl_val_param *p) return ret; } +static int show_results_info(unsigned long sum_llc_val, int no_of_bits, + unsigned long cache_span, unsigned long max_diff, + unsigned long max_diff_percent, unsigned long num_of_runs, + bool platform) +{ + unsigned long avg_llc_val = 0; + float diff_percent; + int ret; + + avg_llc_val = sum_llc_val / num_of_runs; + diff_percent = ((float)cache_span - avg_llc_val) / cache_span * 100; + + ret = platform && abs((int)diff_percent) > max_diff_percent; + + ksft_print_msg("%s Check cache miss rate within %d%%\n", + ret ? "Fail:" : "Pass:", max_diff_percent); + + ksft_print_msg("Percent diff=%d\n", abs((int)diff_percent)); + + show_cache_info(no_of_bits, avg_llc_val, cache_span, true); + + return ret; +} + static int check_results(struct resctrl_val_param *param) { char *token_array[8], temp[512]; @@ -76,9 +100,9 @@ static int check_results(struct resctrl_val_param *param) fclose(fp); no_of_bits = count_consecutive_bits(param->mask, NULL); - return show_cache_info(sum_llc_perf_miss, no_of_bits, param->span / 64, - MAX_DIFF, MAX_DIFF_PERCENT, runs - 1, - get_vendor() == ARCH_INTEL, false); + return show_results_info(sum_llc_perf_miss, no_of_bits, param->span / 64, + MAX_DIFF, MAX_DIFF_PERCENT, runs - 1, + get_vendor() == ARCH_INTEL); } void cat_test_cleanup(void) diff --git a/tools/testing/selftests/resctrl/cmt_test.c b/tools/testing/selftests/resctrl/cmt_test.c index 8fda7fc4d159..6f06f70d81cf 100644 --- a/tools/testing/selftests/resctrl/cmt_test.c +++ b/tools/testing/selftests/resctrl/cmt_test.c @@ -27,6 +27,33 @@ static int cmt_setup(struct resctrl_val_param *p) return 0; } +static int show_results_info(unsigned long sum_llc_val, int no_of_bits, + unsigned long cache_span, unsigned long max_diff, + unsigned long max_diff_percent, unsigned long num_of_runs, + bool platform) +{ + unsigned long avg_llc_val = 0; + float diff_percent; + long avg_diff = 0; + int ret; + + avg_llc_val = sum_llc_val / num_of_runs; + avg_diff = (long)abs(cache_span - avg_llc_val); + diff_percent = ((float)cache_span - avg_llc_val) / cache_span * 100; + + ret = platform && abs((int)diff_percent) > max_diff_percent && + abs(avg_diff) > max_diff; + + ksft_print_msg("%s Check cache miss rate within %d%%\n", + ret ? "Fail:" : "Pass:", max_diff_percent); + + ksft_print_msg("Percent diff=%d\n", abs((int)diff_percent)); + + show_cache_info(no_of_bits, avg_llc_val, cache_span, false); + + return ret; +} + static int check_results(struct resctrl_val_param *param, int no_of_bits) { char *token_array[8], temp[512]; @@ -58,9 +85,8 @@ static int check_results(struct resctrl_val_param *param, int no_of_bits) } fclose(fp); - return show_cache_info(sum_llc_occu_resc, no_of_bits, param->span, - MAX_DIFF, MAX_DIFF_PERCENT, runs - 1, - true, true); + return show_results_info(sum_llc_occu_resc, no_of_bits, param->span, + MAX_DIFF, MAX_DIFF_PERCENT, runs - 1, true); } void cmt_test_cleanup(void) diff --git a/tools/testing/selftests/resctrl/resctrl.h b/tools/testing/selftests/resctrl/resctrl.h index 028b979c28fb..26061db0b9ea 100644 --- a/tools/testing/selftests/resctrl/resctrl.h +++ b/tools/testing/selftests/resctrl/resctrl.h @@ -125,9 +125,7 @@ unsigned int count_bits(unsigned long n); void cmt_test_cleanup(void); int get_core_sibling(int cpu_no); int measure_llc_resctrl(struct resctrl_val_param *param, int bm_pid); -int show_cache_info(unsigned long sum_llc_val, int no_of_bits, - unsigned long cache_span, unsigned long max_diff, - unsigned long max_diff_percent, unsigned long num_of_runs, - bool platform, bool cmt); +void show_cache_info(int no_of_bits, unsigned long avg_llc_val, + unsigned long cache_span, bool lines); #endif /* RESCTRL_H */