From nobody Mon Feb 9 06:25:43 2026 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.11]) (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 ECB664174A; Mon, 11 Mar 2024 13:53:54 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.11 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1710165236; cv=none; b=KKsQWQG1ssWyK9C8rC1m4aNgHpobXsQPdjHSWFVCxJaJrkbuBXxodhDjxwB0KbrlGvnEmGDOPQ5IhiIVF8fBLes5jyhWdxJ/gkfQP6swYjQ55TeBXrclfjP/ssZLvB5nyipcxAX+aP2BXjPt7+EKiIAaKhQIG/oVdtsF20pNV6w= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1710165236; c=relaxed/simple; bh=6hINeLfkgFWE94mLII8XIbT1s+jkdRdKz9vHyDRpLCM=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version:Content-Type; b=fUrGR68nFGALEf43XUv7py7FMchjJK0UejyHhXV7X5TLXB/2C4Tsx+cPOYez/LPwt+FLrPoDJzSxRPFsKYmSfD584ubiq80VVL/GDBnOVzr3RNNFXllbgKi1FHZmgMW0tO1u9+2uKv2qfxcxNniSbEl2PJ7TogC2zSBcUUdrZcY= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com; spf=none smtp.mailfrom=linux.intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=VEpQ0zy6; arc=none smtp.client-ip=198.175.65.11 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="VEpQ0zy6" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1710165235; x=1741701235; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=6hINeLfkgFWE94mLII8XIbT1s+jkdRdKz9vHyDRpLCM=; b=VEpQ0zy6MCYc5bJ/gvY9+Juwg7ecqgRQyaaEpc+l+DTIkM0YFjDge17A iRteWicm4vOrEl3Zq7kf/APVdY6eSZQ2KvOZUpQTHyBYjG/JeoefCmRFz +pvI99ljFOqHZ5HYQx1/NlWIuSDtJzY9pBuUOoU/dfn/LqB/jhz0eZr5Y 9m8AUy/74UBj4fCAHjx6Tzft0KNid0Ofnj6DmmqsSu44fapMKe1xFEmNl ovNxuXXOtjKsPHLKIUAVNH+QbPmDwkAy7WWHrfmCX4MbUCSo7mW7KSBJj emO/BhWqgebm79p7RABO7Kkeb5khG15WfI5Idol8a1NXQHAa760Syiewt Q==; X-IronPort-AV: E=McAfee;i="6600,9927,11009"; a="15388847" X-IronPort-AV: E=Sophos;i="6.07,116,1708416000"; d="scan'208";a="15388847" Received: from orviesa003.jf.intel.com ([10.64.159.143]) by orvoesa103.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 Mar 2024 06:53:54 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.07,116,1708416000"; d="scan'208";a="15814495" Received: from ijarvine-desk1.ger.corp.intel.com (HELO localhost) ([10.245.244.201]) by ORVIESA003-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 Mar 2024 06:53:52 -0700 From: =?UTF-8?q?Ilpo=20J=C3=A4rvinen?= To: linux-kselftest@vger.kernel.org, Reinette Chatre , Shuah Khan , Babu Moger , =?UTF-8?q?Maciej=20Wiecz=C3=B3r-Retman?= Cc: Fenghua Yu , linux-kernel@vger.kernel.org, =?UTF-8?q?Ilpo=20J=C3=A4rvinen?= Subject: [PATCH v2 07/13] selftests/resctrl: Add ->measure() callback to resctrl_val_param Date: Mon, 11 Mar 2024 15:52:24 +0200 Message-Id: <20240311135230.7007-8-ilpo.jarvinen@linux.intel.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240311135230.7007-1-ilpo.jarvinen@linux.intel.com> References: <20240311135230.7007-1-ilpo.jarvinen@linux.intel.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable The measurement done in resctrl_val() varies depending on test type. The decision for how to measure is decided based on the string compare to test name which is quite inflexible. Add ->measure() callback into the struct resctrl_val_param to allow each test to provide necessary code as a function which simplifies what resctrl_val() has to do. Signed-off-by: Ilpo J=C3=A4rvinen --- v2: - spaces -> tabs --- tools/testing/selftests/resctrl/cmt_test.c | 8 ++++++++ tools/testing/selftests/resctrl/mba_test.c | 9 ++++++++- tools/testing/selftests/resctrl/mbm_test.c | 9 ++++++++- tools/testing/selftests/resctrl/resctrl.h | 6 ++++++ tools/testing/selftests/resctrl/resctrl_val.c | 18 +++++------------- 5 files changed, 35 insertions(+), 15 deletions(-) diff --git a/tools/testing/selftests/resctrl/cmt_test.c b/tools/testing/sel= ftests/resctrl/cmt_test.c index a81f91222a89..241c0b129b58 100644 --- a/tools/testing/selftests/resctrl/cmt_test.c +++ b/tools/testing/selftests/resctrl/cmt_test.c @@ -29,6 +29,13 @@ static int cmt_setup(const struct resctrl_test *test, return 0; } =20 +static int cmt_measure(const struct user_params *uparams, + struct resctrl_val_param *param, pid_t bm_pid) +{ + sleep(1); + return measure_llc_resctrl(param->filename, bm_pid); +} + 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, @@ -133,6 +140,7 @@ static int cmt_run_test(const struct resctrl_test *test= , const struct user_param .mask =3D ~(long_mask << n) & long_mask, .num_of_runs =3D 0, .setup =3D cmt_setup, + .measure =3D cmt_measure, }; =20 span =3D cache_portion_size(cache_total_size, param.mask, long_mask); diff --git a/tools/testing/selftests/resctrl/mba_test.c b/tools/testing/sel= ftests/resctrl/mba_test.c index 7946e32e85c8..0939f86514f7 100644 --- a/tools/testing/selftests/resctrl/mba_test.c +++ b/tools/testing/selftests/resctrl/mba_test.c @@ -51,6 +51,12 @@ static int mba_setup(const struct resctrl_test *test, return 0; } =20 +static int mba_measure(const struct user_params *uparams, + struct resctrl_val_param *param, pid_t bm_pid) +{ + return measure_mem_bw(uparams, param, bm_pid); +} + static bool show_mba_info(unsigned long *bw_imc, unsigned long *bw_resc) { int allocation, runs; @@ -150,7 +156,8 @@ static int mba_run_test(const struct resctrl_test *test= , const struct user_param .mongrp =3D "m1", .filename =3D RESULT_FILE_NAME, .bw_report =3D "reads", - .setup =3D mba_setup + .setup =3D mba_setup, + .measure =3D mba_measure, }; int ret; =20 diff --git a/tools/testing/selftests/resctrl/mbm_test.c b/tools/testing/sel= ftests/resctrl/mbm_test.c index d67ffa3ec63a..17398cd3aace 100644 --- a/tools/testing/selftests/resctrl/mbm_test.c +++ b/tools/testing/selftests/resctrl/mbm_test.c @@ -105,6 +105,12 @@ static int mbm_setup(const struct resctrl_test *test, return ret; } =20 +static int mbm_measure(const struct user_params *uparams, + struct resctrl_val_param *param, pid_t bm_pid) +{ + return measure_mem_bw(uparams, param, bm_pid); +} + void mbm_test_cleanup(void) { remove(RESULT_FILE_NAME); @@ -118,7 +124,8 @@ static int mbm_run_test(const struct resctrl_test *test= , const struct user_param .mongrp =3D "m1", .filename =3D RESULT_FILE_NAME, .bw_report =3D "reads", - .setup =3D mbm_setup + .setup =3D mbm_setup, + .measure =3D mbm_measure, }; int ret; =20 diff --git a/tools/testing/selftests/resctrl/resctrl.h b/tools/testing/self= tests/resctrl/resctrl.h index 90fc00a61d72..2da642e11b61 100644 --- a/tools/testing/selftests/resctrl/resctrl.h +++ b/tools/testing/selftests/resctrl/resctrl.h @@ -85,6 +85,7 @@ struct resctrl_test { * @filename: Name of file to which the o/p should be written * @bw_report: Bandwidth report type (reads vs writes) * @setup: Call back function to setup test environment + * @measure: Callback that performs the measurement (a single test) */ struct resctrl_val_param { char *resctrl_val; @@ -97,6 +98,9 @@ struct resctrl_val_param { int (*setup)(const struct resctrl_test *test, const struct user_params *uparams, struct resctrl_val_param *param); + int (*measure)(const struct user_params *uparams, + struct resctrl_val_param *param, + pid_t bm_pid); }; =20 struct perf_event_read { @@ -143,6 +147,8 @@ unsigned char *alloc_buffer(size_t buf_size, int memflu= sh); void mem_flush(unsigned char *buf, size_t buf_size); void fill_cache_read(unsigned char *buf, size_t buf_size, bool once); int run_fill_buf(size_t buf_size, int memflush, int op, bool once); +int measure_mem_bw(const struct user_params *uparams, + struct resctrl_val_param *param, pid_t bm_pid); int resctrl_val(const struct resctrl_test *test, const struct user_params *uparams, const char * const *benchmark_cmd, diff --git a/tools/testing/selftests/resctrl/resctrl_val.c b/tools/testing/= selftests/resctrl/resctrl_val.c index 80e5174df828..13d89d24474e 100644 --- a/tools/testing/selftests/resctrl/resctrl_val.c +++ b/tools/testing/selftests/resctrl/resctrl_val.c @@ -616,8 +616,8 @@ static void initialize_llc_occu_resctrl(const char *ctr= lgrp, const char *mongrp, * @param: parameters passed to resctrl_val() * @bm_pid: PID that runs the benchmark */ -static int measure_mem_bw(const struct user_params *uparams, - struct resctrl_val_param *param, pid_t bm_pid) +int measure_mem_bw(const struct user_params *uparams, + struct resctrl_val_param *param, pid_t bm_pid) { unsigned long bw_resc, bw_resc_start, bw_resc_end; float bw_imc; @@ -870,17 +870,9 @@ int resctrl_val(const struct resctrl_test *test, if (ret < 0) break; =20 - if (!strncmp(resctrl_val, MBM_STR, sizeof(MBM_STR)) || - !strncmp(resctrl_val, MBA_STR, sizeof(MBA_STR))) { - ret =3D measure_mem_bw(uparams, param, bm_pid); - if (ret) - break; - } else if (!strncmp(resctrl_val, CMT_STR, sizeof(CMT_STR))) { - sleep(1); - ret =3D measure_llc_resctrl(param->filename, bm_pid); - if (ret) - break; - } + ret =3D param->measure(uparams, param, bm_pid); + if (ret) + break; } =20 out: --=20 2.39.2