From patchwork Mon Jun 5 18:01:44 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: 689601 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 74E0FC7EE2E for ; Mon, 5 Jun 2023 18:05:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234995AbjFESFK (ORCPT ); Mon, 5 Jun 2023 14:05:10 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36300 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235503AbjFESEW (ORCPT ); Mon, 5 Jun 2023 14:04:22 -0400 Received: from mga05.intel.com (mga05.intel.com [192.55.52.43]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EB60B10F6; Mon, 5 Jun 2023 11:03:59 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1685988239; x=1717524239; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=tlqcBuGsxOSKA74bKjbrp+jQUh7f0hcz1UsL+nprPCM=; b=Wqpt7jOaUP7T6Zma2jkS7N41+GFkGsSzywN/hkT9eH8F1symbnGa7ja+ nP1jxfM/KVuLqgkvxTzVCkcf9KkqQgHoKvuAxi/Tx0N8GQTW4r4RSYj7d 1pM+Tizzia2uo2vcdyYGnkf+uIe1Lw2yk1kDao0qYpprGKjYrNP9MpmBx fYPlRqB6rERAuscFKRJzzLEJ6+GwcAl/vj8VdgdyzX1NyfUInbKw53iTA IMx16CTE+ztTfC+wXLxlyiGv5sWUCy5N9YQ7+bzvRP2opNs5ahMlbL4XK aqV0TRuJEULRu1owJCqEet/VUn+p73PS9nEyxPJ7X5uPeWnfPuLMOs6Jk w==; X-IronPort-AV: E=McAfee;i="6600,9927,10732"; a="442815458" X-IronPort-AV: E=Sophos;i="6.00,218,1681196400"; d="scan'208";a="442815458" Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by fmsmga105.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 05 Jun 2023 11:03:38 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10732"; a="821274326" X-IronPort-AV: E=Sophos;i="6.00,218,1681196400"; d="scan'208";a="821274326" Received: from gfittedx-mobl.ger.corp.intel.com (HELO ijarvine-MOBL2.ger.corp.intel.com) ([10.252.47.115]) by fmsmga002-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 05 Jun 2023 11:03:36 -0700 From: =?utf-8?q?Ilpo_J=C3=A4rvinen?= To: linux-kselftest@vger.kernel.org, Reinette Chatre , Shuah Khan , Shaopeng Tan , Fenghua Yu , linux-kernel@vger.kernel.org Cc: =?utf-8?q?Ilpo_J=C3=A4rvinen?= Subject: [PATCH v3 18/19] selftests/resctrl: Pass the real number of tests to show_cache_info() Date: Mon, 5 Jun 2023 21:01:44 +0300 Message-Id: <20230605180145.112924-19-ilpo.jarvinen@linux.intel.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20230605180145.112924-1-ilpo.jarvinen@linux.intel.com> References: <20230605180145.112924-1-ilpo.jarvinen@linux.intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org Results include warm-up test which is discarded before passing the sum to show_cache_info(). show_cache_info() handles this by subtracting one from the number of tests in divisor. It is a trappy construct to have sum and number of tests parameters to disagree like this. A more logical place for subtracting the skipped tests is where the sum is calculated so move it there. Pass the correct number of tests to show_cache_info() so it can be used directly as the divisor for calculating the average. Signed-off-by: Ilpo Järvinen --- tools/testing/selftests/resctrl/cache.c | 2 +- tools/testing/selftests/resctrl/cat_test.c | 2 +- tools/testing/selftests/resctrl/cmt_test.c | 2 +- 3 files changed, 3 insertions(+), 3 deletions(-) diff --git a/tools/testing/selftests/resctrl/cache.c b/tools/testing/selftests/resctrl/cache.c index 385c01dd3ec6..5aa112e5fdd3 100644 --- a/tools/testing/selftests/resctrl/cache.c +++ b/tools/testing/selftests/resctrl/cache.c @@ -290,7 +290,7 @@ int show_cache_info(unsigned long sum_llc_val, int no_of_bits, long avg_diff = 0; int ret; - avg_llc_val = sum_llc_val / (num_of_runs - 1); + 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; diff --git a/tools/testing/selftests/resctrl/cat_test.c b/tools/testing/selftests/resctrl/cat_test.c index ed6c8e64ad11..3848dfb46aba 100644 --- a/tools/testing/selftests/resctrl/cat_test.c +++ b/tools/testing/selftests/resctrl/cat_test.c @@ -77,7 +77,7 @@ static int check_results(struct resctrl_val_param *param) no_of_bits = count_bits(param->mask); return show_cache_info(sum_llc_perf_miss, no_of_bits, param->span / 64, - MAX_DIFF, MAX_DIFF_PERCENT, NUM_OF_RUNS, + MAX_DIFF, MAX_DIFF_PERCENT, runs - 1, get_vendor() == ARCH_INTEL, false); } diff --git a/tools/testing/selftests/resctrl/cmt_test.c b/tools/testing/selftests/resctrl/cmt_test.c index 0ac9d6bbd13d..cb2197647c6c 100644 --- a/tools/testing/selftests/resctrl/cmt_test.c +++ b/tools/testing/selftests/resctrl/cmt_test.c @@ -59,7 +59,7 @@ 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, NUM_OF_RUNS, + MAX_DIFF, MAX_DIFF_PERCENT, runs - 1, true, true); }