From patchwork Tue Apr 18 11:45:05 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: 675432 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 4573DC77B75 for ; Tue, 18 Apr 2023 11:48:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231451AbjDRLsr (ORCPT ); Tue, 18 Apr 2023 07:48:47 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58780 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231309AbjDRLsp (ORCPT ); Tue, 18 Apr 2023 07:48:45 -0400 Received: from mga09.intel.com (mga09.intel.com [134.134.136.24]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4F659A276; Tue, 18 Apr 2023 04:48:17 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1681818497; x=1713354497; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=3kC1cIvW3Ly4ZuJDs2oLZ6s9guHuS3vAGx7X5+zB3q0=; b=Mg2M9s3FOyjwMO8gNClK1h6XHJi59CqVwwk6EmxegebdkWskb6i48nDo vkYEJfGm8x/9UWgHwHRt7paZmVowsRUL8uD184vhfpUC2c/MKQI33iyHA v/3K6m44kzTaBWZcwDxKO6UJ6GogAaqGVA8Mgz3j4CTJPgd5S2O82GRvQ NTHKfDc5lBYzVBYEcR40aNzLFvszWYoTUBJTrXcYYPZSxB3gIt2aMBT/M 0/eGFymYGPqqGeNPngXP8hxAQxz5vzCPeRAsJkcr0oPL9+K+Dg8HWQWn9 a/hMZvFDTGPRYhm+FvUt4jFdaArgnLafI/SFt4621z3kVExSqdc8oejpY Q==; X-IronPort-AV: E=McAfee;i="6600,9927,10683"; a="346994509" X-IronPort-AV: E=Sophos;i="5.99,207,1677571200"; d="scan'208";a="346994509" Received: from orsmga001.jf.intel.com ([10.7.209.18]) by orsmga102.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 18 Apr 2023 04:46:36 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10683"; a="723601891" X-IronPort-AV: E=Sophos;i="5.99,207,1677571200"; d="scan'208";a="723601891" Received: from yvolokit-mobl1.ger.corp.intel.com (HELO ijarvine-MOBL2.ger.corp.intel.com) ([10.251.213.103]) by orsmga001-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 18 Apr 2023 04:46:34 -0700 From: =?utf-8?q?Ilpo_J=C3=A4rvinen?= To: linux-kselftest@vger.kernel.org, Reinette Chatre , Fenghua Yu , Shuah Khan , linux-kernel@vger.kernel.org Cc: Shaopeng Tan , =?utf-8?q?Ilpo_J=C3=A4rvinen?= Subject: [PATCH v2 23/24] selftests/resctrl: Split show_cache_info() to test specific and generic parts Date: Tue, 18 Apr 2023 14:45:05 +0300 Message-Id: <20230418114506.46788-24-ilpo.jarvinen@linux.intel.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20230418114506.46788-1-ilpo.jarvinen@linux.intel.com> References: <20230418114506.46788-1-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 a015ce2d0a3c..7970239413da 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 ef3ba22bdde5..4b505fdb35d7 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 6adee08661e7..b3fedade583b 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 12754733126f..fc914391024d 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 */