From patchwork Fri Mar 8 13:22:50 2024 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: 778985 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.12]) (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 256CA4CE08; Fri, 8 Mar 2024 13:24:32 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.12 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709904274; cv=none; b=CFch0SNYKwpXq1pefwmuB/lPdnc3Vady8VACa6kuZJe2m0clcFA92KXckH5Lb2sKMW4MZTNr5BfhLBhNM88yTqk6xL+evzRdSYs7wbl7MtyKANnB91ndjSpDpzUVJ19gdpuUqE2dXwFN92pNY28py8g5wWPaSYpI5P/4kniiX7E= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709904274; c=relaxed/simple; bh=o8lv5VE1IlgHSVebaQ+NoK1MFGS3ZjMGBmAnHnYJVaE=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version:Content-Type; b=WtvebgaNNtPOQp702tvTAh7t6FsEG2tSu24AbMyw1V3YhRqVeOm74qiXgaUFnBJcofGCWJJ7+REDlHOWR8JyVBlWhfX2IPoCpiNDRNbIuZmOOnFcgRsqQ+0Z3pgM5vX2kMUgFlc1Ip/YmUEjHJqRbrX9yMwOW32eUl64Gp8VhTE= 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=da3Af5HP; arc=none smtp.client-ip=192.198.163.12 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="da3Af5HP" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1709904272; x=1741440272; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=o8lv5VE1IlgHSVebaQ+NoK1MFGS3ZjMGBmAnHnYJVaE=; b=da3Af5HPxjLYX19YpOmKKw9ZOWhAD0wcWTieCW4euw6m7iZxdZrMZ5bj KqAOz99mJ7nKMVF3g9+GTi6OGAbaGzWew7MFmrdmu2RXtr7LXbtdB8rF7 uAexfPnIA6gJcQVb/9oZD6C9qN5eTbjDNXGAU6ihi9tZZ5SHB2NF4JrQk PXZNPGCH1PETAb3V7cN0OOObiLtt2J3+tG4TKxGS5Q5VfXUbiRCJ0LZKV QzcYbC1JBROw6pJDzwsz5FczqiItiIuTsgnRg6fLpImotf6vBOueCznpm 3cARp/a6Z7t4X9zzRgQ6bouaXF7g9OiPLTaSEcjaDtHuGeTg38uBvUUjM g==; X-IronPort-AV: E=McAfee;i="6600,9927,11006"; a="8375118" X-IronPort-AV: E=Sophos;i="6.07,109,1708416000"; d="scan'208";a="8375118" Received: from orviesa010.jf.intel.com ([10.64.159.150]) by fmvoesa106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 08 Mar 2024 05:24:31 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.07,109,1708416000"; d="scan'208";a="10472740" Received: from ijarvine-desk1.ger.corp.intel.com (HELO localhost) ([10.245.244.186]) by orviesa010-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 08 Mar 2024 05:24:28 -0800 From: =?utf-8?q?Ilpo_J=C3=A4rvinen?= To: linux-kselftest@vger.kernel.org, Reinette Chatre , Shuah Khan , Babu Moger , =?utf-8?q?Maciej_Wiecz=C3=B3r-Retman?= , Fenghua Yu , linux-kernel@vger.kernel.org Cc: =?utf-8?q?Ilpo_J=C3=A4rvinen?= Subject: [PATCH 08/13] selftests/resctrl: Add ->init() callback into resctrl_val_param Date: Fri, 8 Mar 2024 15:22:50 +0200 Message-Id: <20240308132255.14442-9-ilpo.jarvinen@linux.intel.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240308132255.14442-1-ilpo.jarvinen@linux.intel.com> References: <20240308132255.14442-1-ilpo.jarvinen@linux.intel.com> Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 The struct resctrl_val_param is there to customize behavior inside resctrl_val() which is currently not used to full extent and there are number of strcmp()s for test name in resctrl_val done by resctrl_val(). Create ->init() hook into the struct resctrl_val_param to cleanly do per test initialization. Remove also unused branches to setup paths and the related #defines. Signed-off-by: Ilpo Järvinen --- tools/testing/selftests/resctrl/cmt_test.c | 12 ++ tools/testing/selftests/resctrl/mba_test.c | 24 +++- tools/testing/selftests/resctrl/mbm_test.c | 24 +++- tools/testing/selftests/resctrl/resctrl.h | 9 +- tools/testing/selftests/resctrl/resctrl_val.c | 123 ++---------------- 5 files changed, 75 insertions(+), 117 deletions(-) diff --git a/tools/testing/selftests/resctrl/cmt_test.c b/tools/testing/selftests/resctrl/cmt_test.c index fec487b2cbf2..ae2775ace36e 100644 --- a/tools/testing/selftests/resctrl/cmt_test.c +++ b/tools/testing/selftests/resctrl/cmt_test.c @@ -16,6 +16,17 @@ #define MAX_DIFF 2000000 #define MAX_DIFF_PERCENT 15 +#define CON_MON_LCC_OCCUP_PATH \ + "%s/%s/mon_groups/%s/mon_data/mon_L3_%02d/llc_occupancy" + +static int set_cmt_path(const struct resctrl_val_param *param, int domain_id) +{ + sprintf(llc_occup_path, CON_MON_LCC_OCCUP_PATH, RESCTRL_PATH, + param->ctrlgrp, param->mongrp, domain_id); + + return 0; +} + static int cmt_setup(const struct resctrl_test *test, const struct user_params *uparams, struct resctrl_val_param *p) @@ -139,6 +150,7 @@ static int cmt_run_test(const struct resctrl_test *test, const struct user_param .filename = RESULT_FILE_NAME, .mask = ~(long_mask << n) & long_mask, .num_of_runs = 0, + .init = set_cmt_path, .setup = cmt_setup, .measure = cmt_measure, }; diff --git a/tools/testing/selftests/resctrl/mba_test.c b/tools/testing/selftests/resctrl/mba_test.c index a88a22294f03..eb02d3322e0e 100644 --- a/tools/testing/selftests/resctrl/mba_test.c +++ b/tools/testing/selftests/resctrl/mba_test.c @@ -8,6 +8,8 @@ * Sai Praneeth Prakhya , * Fenghua Yu */ +#include + #include "resctrl.h" #define RESULT_FILE_NAME "result_mba" @@ -17,6 +19,25 @@ #define ALLOCATION_MIN 10 #define ALLOCATION_STEP 10 +#define CON_MBM_LOCAL_BYTES_PATH \ + "%s/%s/mon_data/mon_L3_%02d/mbm_local_bytes" + +static char mbm_total_path[PATH_MAX]; + +static int set_mba_path(const struct resctrl_val_param *param, int domain_id) +{ + int ret; + + ret = initialize_mem_bw_imc(); + if (ret) + return ret; + + sprintf(mbm_total_path, CON_MBM_LOCAL_BYTES_PATH, + RESCTRL_PATH, param->ctrlgrp, domain_id); + + return 0; +} + /* * Change schemata percentage from 100 to 10%. Write schemata to specified * con_mon grp, mon_grp in resctrl FS. @@ -54,7 +75,7 @@ static int mba_setup(const struct resctrl_test *test, 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); + return measure_mem_bw(uparams, param, bm_pid, mbm_total_path); } static bool show_mba_info(unsigned long *bw_imc, unsigned long *bw_resc) @@ -156,6 +177,7 @@ static int mba_run_test(const struct resctrl_test *test, const struct user_param .mongrp = "m1", .filename = RESULT_FILE_NAME, .bw_report = "reads", + .init = set_mba_path, .setup = mba_setup, .measure = mba_measure, }; diff --git a/tools/testing/selftests/resctrl/mbm_test.c b/tools/testing/selftests/resctrl/mbm_test.c index 90c8dfa2c3fb..cb9f9d5101d9 100644 --- a/tools/testing/selftests/resctrl/mbm_test.c +++ b/tools/testing/selftests/resctrl/mbm_test.c @@ -8,12 +8,19 @@ * Sai Praneeth Prakhya , * Fenghua Yu */ +#include + #include "resctrl.h" #define RESULT_FILE_NAME "result_mbm" #define MAX_DIFF_PERCENT 8 #define NUM_OF_RUNS 5 +#define CON_MON_MBM_LOCAL_BYTES_PATH \ + "%s/%s/mon_groups/%s/mon_data/mon_L3_%02d/mbm_local_bytes" + +static char mbm_total_path[PATH_MAX]; + static int show_bw_info(unsigned long *bw_imc, unsigned long *bw_resc, size_t span) { @@ -86,6 +93,20 @@ static int check_results(size_t span) return ret; } +static int set_mbm_path(const struct resctrl_val_param *param, int domain_id) +{ + int ret; + + ret = initialize_mem_bw_imc(); + if (ret) + return ret; + + sprintf(mbm_total_path, CON_MON_MBM_LOCAL_BYTES_PATH, + RESCTRL_PATH, param->ctrlgrp, param->mongrp, domain_id); + + return 0; +} + static int mbm_setup(const struct resctrl_test *test, const struct user_params *uparams, struct resctrl_val_param *p) @@ -108,7 +129,7 @@ static int mbm_setup(const struct resctrl_test *test, 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); + return measure_mem_bw(uparams, param, bm_pid, mbm_total_path); } void mbm_test_cleanup(void) @@ -124,6 +145,7 @@ static int mbm_run_test(const struct resctrl_test *test, const struct user_param .mongrp = "m1", .filename = RESULT_FILE_NAME, .bw_report = "reads", + .init = set_mbm_path, .setup = mbm_setup, .measure = mbm_measure, }; diff --git a/tools/testing/selftests/resctrl/resctrl.h b/tools/testing/selftests/resctrl/resctrl.h index 4455fb3c6933..511c87634d4f 100644 --- a/tools/testing/selftests/resctrl/resctrl.h +++ b/tools/testing/selftests/resctrl/resctrl.h @@ -81,7 +81,8 @@ struct resctrl_test { * @mongrp: Name of the monitor group (mon grp) * @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 + * @init: Callback function to initialize test environment + * @setup: Callback function to setup per test run environment * @measure: Callback that performs the measurement (a single test) */ struct resctrl_val_param { @@ -92,6 +93,8 @@ struct resctrl_val_param { char *bw_report; unsigned long mask; int num_of_runs; + int (*init)(const struct resctrl_val_param *param, + int domain_id); int (*setup)(const struct resctrl_test *test, const struct user_params *uparams, struct resctrl_val_param *param); @@ -142,8 +145,10 @@ unsigned char *alloc_buffer(size_t buf_size, int memflush); 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 initialize_mem_bw_imc(void); int measure_mem_bw(const struct user_params *uparams, - struct resctrl_val_param *param, pid_t bm_pid); + struct resctrl_val_param *param, + pid_t bm_pid, const char *mbm_total_path); 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 13d89d24474e..1a96298592ed 100644 --- a/tools/testing/selftests/resctrl/resctrl_val.c +++ b/tools/testing/selftests/resctrl/resctrl_val.c @@ -19,29 +19,6 @@ #define MAX_TOKENS 5 #define READ 0 #define WRITE 1 -#define CON_MON_MBM_LOCAL_BYTES_PATH \ - "%s/%s/mon_groups/%s/mon_data/mon_L3_%02d/mbm_local_bytes" - -#define CON_MBM_LOCAL_BYTES_PATH \ - "%s/%s/mon_data/mon_L3_%02d/mbm_local_bytes" - -#define MON_MBM_LOCAL_BYTES_PATH \ - "%s/mon_groups/%s/mon_data/mon_L3_%02d/mbm_local_bytes" - -#define MBM_LOCAL_BYTES_PATH \ - "%s/mon_data/mon_L3_%02d/mbm_local_bytes" - -#define CON_MON_LCC_OCCUP_PATH \ - "%s/%s/mon_groups/%s/mon_data/mon_L3_%02d/llc_occupancy" - -#define CON_LCC_OCCUP_PATH \ - "%s/%s/mon_data/mon_L3_%02d/llc_occupancy" - -#define MON_LCC_OCCUP_PATH \ - "%s/mon_groups/%s/mon_data/mon_L3_%02d/llc_occupancy" - -#define LCC_OCCUP_PATH \ - "%s/mon_data/mon_L3_%02d/llc_occupancy" struct membw_read_format { __u64 value; /* The value of the event */ @@ -59,7 +36,6 @@ struct imc_counter_config { int fd; }; -static char mbm_total_path[1024]; static int imcs; static struct imc_counter_config imc_counters_config[MAX_IMCS][2]; @@ -275,7 +251,7 @@ static int num_of_imcs(void) return count; } -static int initialize_mem_bw_imc(void) +int initialize_mem_bw_imc(void) { int imc, j; @@ -411,56 +387,10 @@ static int get_mem_bw_imc(char *bw_report, float *bw_imc) return 0; } -void set_mbm_path(const char *ctrlgrp, const char *mongrp, int domain_id) -{ - if (ctrlgrp && mongrp) - sprintf(mbm_total_path, CON_MON_MBM_LOCAL_BYTES_PATH, - RESCTRL_PATH, ctrlgrp, mongrp, domain_id); - else if (!ctrlgrp && mongrp) - sprintf(mbm_total_path, MON_MBM_LOCAL_BYTES_PATH, RESCTRL_PATH, - mongrp, domain_id); - else if (ctrlgrp && !mongrp) - sprintf(mbm_total_path, CON_MBM_LOCAL_BYTES_PATH, RESCTRL_PATH, - ctrlgrp, domain_id); - else if (!ctrlgrp && !mongrp) - sprintf(mbm_total_path, MBM_LOCAL_BYTES_PATH, RESCTRL_PATH, - domain_id); -} - -/* - * initialize_mem_bw_resctrl: Appropriately populate "mbm_total_path" - * @ctrlgrp: Name of the control monitor group (con_mon grp) - * @mongrp: Name of the monitor group (mon grp) - * @domain_id: Domain ID (cache ID; for MB, L3 cache ID) - * @resctrl_val: Resctrl feature (Eg: mbm, mba.. etc) - */ -static void initialize_mem_bw_resctrl(const char *ctrlgrp, const char *mongrp, - int domain_id, char *resctrl_val) -{ - if (!strncmp(resctrl_val, MBM_STR, sizeof(MBM_STR))) - set_mbm_path(ctrlgrp, mongrp, domain_id); - - if (!strncmp(resctrl_val, MBA_STR, sizeof(MBA_STR))) { - if (ctrlgrp) - sprintf(mbm_total_path, CON_MBM_LOCAL_BYTES_PATH, - RESCTRL_PATH, ctrlgrp, domain_id); - else - sprintf(mbm_total_path, MBM_LOCAL_BYTES_PATH, - RESCTRL_PATH, domain_id); - } -} - /* * Get MBM Local bytes as reported by resctrl FS - * For MBM, - * 1. If con_mon grp and mon grp are given, then read from con_mon grp's mon grp - * 2. If only con_mon grp is given, then read from con_mon grp - * 3. If both are not given, then read from root con_mon grp - * For MBA, - * 1. If con_mon grp is given, then read from it - * 2. If con_mon grp is not given, then read from root con_mon grp */ -static int get_mem_bw_resctrl(unsigned long *mbm_total) +static int get_mem_bw_resctrl(const char *mbm_total_path, unsigned long *mbm_total) { FILE *fp; @@ -581,43 +511,16 @@ static int print_results_bw(char *filename, pid_t bm_pid, float bw_imc, return 0; } -static void set_cmt_path(const char *ctrlgrp, const char *mongrp, char sock_num) -{ - if (strlen(ctrlgrp) && strlen(mongrp)) - sprintf(llc_occup_path, CON_MON_LCC_OCCUP_PATH, RESCTRL_PATH, - ctrlgrp, mongrp, sock_num); - else if (!strlen(ctrlgrp) && strlen(mongrp)) - sprintf(llc_occup_path, MON_LCC_OCCUP_PATH, RESCTRL_PATH, - mongrp, sock_num); - else if (strlen(ctrlgrp) && !strlen(mongrp)) - sprintf(llc_occup_path, CON_LCC_OCCUP_PATH, RESCTRL_PATH, - ctrlgrp, sock_num); - else if (!strlen(ctrlgrp) && !strlen(mongrp)) - sprintf(llc_occup_path, LCC_OCCUP_PATH, RESCTRL_PATH, sock_num); -} - -/* - * initialize_llc_occu_resctrl: Appropriately populate "llc_occup_path" - * @ctrlgrp: Name of the control monitor group (con_mon grp) - * @mongrp: Name of the monitor group (mon grp) - * @domain_id: Domain ID (cache ID; for MB, L3 cache ID) - * @resctrl_val: Resctrl feature (Eg: cat, cmt.. etc) - */ -static void initialize_llc_occu_resctrl(const char *ctrlgrp, const char *mongrp, - int domain_id, char *resctrl_val) -{ - if (!strncmp(resctrl_val, CMT_STR, sizeof(CMT_STR))) - set_cmt_path(ctrlgrp, mongrp, domain_id); -} - /* * measure_mem_bw - Measures memory bandwidth numbers while benchmark runs * @uparams: User supplied parameters * @param: parameters passed to resctrl_val() * @bm_pid: PID that runs the benchmark + * @mbm_total_path: Resctrl FS monitoring file to read mem BW from */ int measure_mem_bw(const struct user_params *uparams, - struct resctrl_val_param *param, pid_t bm_pid) + struct resctrl_val_param *param, + pid_t bm_pid, const char *mbm_total_path) { unsigned long bw_resc, bw_resc_start, bw_resc_end; float bw_imc; @@ -634,13 +537,13 @@ int measure_mem_bw(const struct user_params *uparams, if (ret < 0) return ret; - ret = get_mem_bw_resctrl(&bw_resc_start); + ret = get_mem_bw_resctrl(mbm_total_path, &bw_resc_start); if (ret < 0) return ret; do_imc_mem_bw_test(); - ret = get_mem_bw_resctrl(&bw_resc_end); + ret = get_mem_bw_resctrl(mbm_total_path, &bw_resc_end); if (ret < 0) return ret; @@ -826,17 +729,11 @@ int resctrl_val(const struct resctrl_test *test, if (ret) goto out; - if (!strncmp(resctrl_val, MBM_STR, sizeof(MBM_STR)) || - !strncmp(resctrl_val, MBA_STR, sizeof(MBA_STR))) { - ret = initialize_mem_bw_imc(); + if (param->init) { + ret = param->init(param, domain_id); if (ret) goto out; - - initialize_mem_bw_resctrl(param->ctrlgrp, param->mongrp, - domain_id, resctrl_val); - } else if (!strncmp(resctrl_val, CMT_STR, sizeof(CMT_STR))) - initialize_llc_occu_resctrl(param->ctrlgrp, param->mongrp, - domain_id, resctrl_val); + } /* Parent waits for child to be ready. */ close(pipefd[1]);