From patchwork Mon May 20 12:30:14 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: 798569 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.19]) (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 E04B455E53; Mon, 20 May 2024 12:32:01 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.19 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716208323; cv=none; b=FgBo6eGwf3B13HmQycL1yy9OrDh33hsKAGlHWV9PXIkNVl1x0qQDdjDjOqFUB3oHUw19x5h8VTGwwB+j7GFQMe7FYvsZAguhDzsFTEmN6TVoGI2+jvoox/E562lLiBHZb2maGNIj69THnh8gcaQw2SsjNNPEq5MXft7gY5gONMU= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716208323; c=relaxed/simple; bh=rCPpUqAyrEHzYYx8VYaQs+iFJXyOl5ii6bNWL0XxLsA=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version:Content-Type; b=JpHiYjpmPhJtvBzVqfTLFkJl65p2dVelPNg/dBKb+yX5TJOL/KkqQ4LknM/ZlKkeUteofmuvhf09PCCed2aECvBocRqHFyho6ODotCM62eIsLo9Z+uZnO94Q8UKoEjjqKwLMqREQRkgk+WLpR60NSHUXNuQiSrAgne9ovVPC+ms= 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=Rm9/KfeH; arc=none smtp.client-ip=198.175.65.19 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="Rm9/KfeH" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1716208322; x=1747744322; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=rCPpUqAyrEHzYYx8VYaQs+iFJXyOl5ii6bNWL0XxLsA=; b=Rm9/KfeHUGUQrD0p3Nvdg+RuVT9wbOyG+GZfASndWMzGZgT+4k7/wBBP JkAhahd4Qg2U/iXzbFr4JuO9TIKXevr/RQEGraImn4kgmiMUBYRqzwqfg AORtUzrHI2jVXe9A7dQkogInuaHCkx2UE5n0BN8cTDQiF1etvcn12DzSl spZkjbvCMFvs8fnn0GybLEXjJxx7CGhqpzl4TT59QemGS8abpZ4o/ZpAu 1j5neSPblzVNKAtM0tGs01MK3H53rDeFqBmFUgdmkR1CsgGKl5Yj9GKA6 EQ79+YM6v7UhH7uuRGOMagIeyve+bRzMWK0nugbkF+h00ahpPTVLDHgAe A==; X-CSE-ConnectionGUID: NvOk3IBjTzuA/TAAxg7dwA== X-CSE-MsgGUID: +8V4yykwTKu/7DbMmBF2Kg== X-IronPort-AV: E=McAfee;i="6600,9927,11078"; a="12180495" X-IronPort-AV: E=Sophos;i="6.08,175,1712646000"; d="scan'208";a="12180495" Received: from orviesa008.jf.intel.com ([10.64.159.148]) by orvoesa111.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 20 May 2024 05:32:01 -0700 X-CSE-ConnectionGUID: NIVeV3qBRw6BKoVyLjNXAw== X-CSE-MsgGUID: tK1FuRh5Se6R/wLekH51+g== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.08,175,1712646000"; d="scan'208";a="33091219" Received: from unknown (HELO localhost) ([10.245.247.114]) by orviesa008-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 20 May 2024 05:31:58 -0700 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?= Cc: linux-kernel@vger.kernel.org, Fenghua Yu , Shuah Khan , =?utf-8?q?Ilpo_J=C3=A4rvinen?= Subject: [PATCH v4 10/16] selftests/resctrl: Add ->init() callback into resctrl_val_param Date: Mon, 20 May 2024 15:30:14 +0300 Message-Id: <20240520123020.18938-11-ilpo.jarvinen@linux.intel.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240520123020.18938-1-ilpo.jarvinen@linux.intel.com> References: <20240520123020.18938-1-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 for CMT test. Signed-off-by: Ilpo Järvinen --- v3: - Rename init functions to _init() - Removed tabs intermixed with code - Leave now common mbm bw filename setup into resctrl_val.c --- tools/testing/selftests/resctrl/cmt_test.c | 12 +++ tools/testing/selftests/resctrl/mba_test.c | 14 ++++ tools/testing/selftests/resctrl/mbm_test.c | 14 ++++ tools/testing/selftests/resctrl/resctrl.h | 8 +- tools/testing/selftests/resctrl/resctrl_val.c | 75 ++++--------------- 5 files changed, 60 insertions(+), 63 deletions(-) diff --git a/tools/testing/selftests/resctrl/cmt_test.c b/tools/testing/selftests/resctrl/cmt_test.c index d8521386cd18..238f514ba7e6 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 cmt_init(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 = cmt_init, .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 de6e29faf214..0a95c42f1616 100644 --- a/tools/testing/selftests/resctrl/mba_test.c +++ b/tools/testing/selftests/resctrl/mba_test.c @@ -17,6 +17,19 @@ #define ALLOCATION_MIN 10 #define ALLOCATION_STEP 10 +static int mba_init(const struct resctrl_val_param *param, int domain_id) +{ + int ret; + + ret = initialize_mem_bw_imc(); + if (ret) + return ret; + + initialize_mem_bw_resctrl(param, domain_id); + + return 0; +} + /* * Change schemata percentage from 100 to 10%. Write schemata to specified * con_mon grp, mon_grp in resctrl FS. @@ -156,6 +169,7 @@ static int mba_run_test(const struct resctrl_test *test, const struct user_param .mongrp = "m1", .filename = RESULT_FILE_NAME, .bw_report = "reads", + .init = mba_init, .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 59e26adf60bb..00e60b01188a 100644 --- a/tools/testing/selftests/resctrl/mbm_test.c +++ b/tools/testing/selftests/resctrl/mbm_test.c @@ -86,6 +86,19 @@ static int check_results(size_t span) return ret; } +static int mbm_init(const struct resctrl_val_param *param, int domain_id) +{ + int ret; + + ret = initialize_mem_bw_imc(); + if (ret) + return ret; + + initialize_mem_bw_resctrl(param, domain_id); + + return 0; +} + static int mbm_setup(const struct resctrl_test *test, const struct user_params *uparams, struct resctrl_val_param *p) @@ -123,6 +136,7 @@ static int mbm_run_test(const struct resctrl_test *test, const struct user_param .ctrlgrp = "c1", .filename = RESULT_FILE_NAME, .bw_report = "reads", + .init = mbm_init, .setup = mbm_setup, .measure = mbm_measure, }; diff --git a/tools/testing/selftests/resctrl/resctrl.h b/tools/testing/selftests/resctrl/resctrl.h index 5dc3def70669..d3fbb957309d 100644 --- a/tools/testing/selftests/resctrl/resctrl.h +++ b/tools/testing/selftests/resctrl/resctrl.h @@ -86,7 +86,8 @@ 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 { @@ -97,6 +98,8 @@ 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); @@ -149,8 +152,11 @@ 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); +void initialize_mem_bw_resctrl(const struct resctrl_val_param *param, + int domain_id); 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 76ae89e1aea3..23a82bd547a3 100644 --- a/tools/testing/selftests/resctrl/resctrl_val.c +++ b/tools/testing/selftests/resctrl/resctrl_val.c @@ -23,18 +23,6 @@ #define CON_MBM_LOCAL_BYTES_PATH \ "%s/%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 */ __u64 time_enabled; /* if PERF_FORMAT_TOTAL_TIME_ENABLED */ @@ -268,7 +256,7 @@ static int num_of_imcs(void) return count; } -static int initialize_mem_bw_imc(void) +int initialize_mem_bw_imc(void) { int imc, j; @@ -430,24 +418,18 @@ static int get_mem_bw_imc(char *bw_report, float *bw_imc) /* * initialize_mem_bw_resctrl: Appropriately populate "mbm_total_path" - * @ctrlgrp: Name of the control monitor group (con_mon grp) - * @domain_id: Domain ID (cache ID; for MB, L3 cache ID) + * @param: parameters passed to resctrl_val() + * @domain_id: Domain ID (cache ID; for MB, L3 cache ID) */ -static void initialize_mem_bw_resctrl(const char *ctrlgrp, int domain_id) +void initialize_mem_bw_resctrl(const struct resctrl_val_param *param, + int domain_id) { sprintf(mbm_total_path, CON_MBM_LOCAL_BYTES_PATH, RESCTRL_PATH, - ctrlgrp, domain_id); + param->ctrlgrp, 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 + * Open file to read MBM local bytes from resctrl FS */ static FILE *open_mem_bw_resctrl(const char *mbm_bw_file) { @@ -460,6 +442,9 @@ static FILE *open_mem_bw_resctrl(const char *mbm_bw_file) return fp; } +/* + * Get MBM Local bytes as reported by resctrl FS + */ static int get_mem_bw_resctrl(FILE *fp, unsigned long *mbm_total) { if (fscanf(fp, "%lu", mbm_total) <= 0) { @@ -572,35 +557,6 @@ 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 @@ -836,16 +792,11 @@ 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, domain_id); - } 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]);