From nobody Sun Feb 8 20:52:13 2026 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 891C9EB64DD for ; Thu, 13 Jul 2023 13:21:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234797AbjGMNV5 (ORCPT ); Thu, 13 Jul 2023 09:21:57 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52038 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234839AbjGMNV1 (ORCPT ); Thu, 13 Jul 2023 09:21:27 -0400 Received: from mga17.intel.com (mga17.intel.com [192.55.52.151]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 27A8035AD; Thu, 13 Jul 2023 06:21:01 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1689254461; x=1720790461; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=/q4GY8rhp2G88sSlAlKWw7Agjaw1iIMrjHxhCLVPXWA=; b=KpIZ/UCsakfhSsNc9tsIzcG7EqNc3GxmknsexERIFtoA2J+BPh7UkyU1 0VFLwOse8jAM9P68ieTkhDHqKIy8666/95vPSJbeTbqf5iwDbI7NGpjAf IbbGnT3btdFkTpEI0Z127roONC5dT/SeoIeWDvvPtPMc6kLItB4TdJdJg MZoY0SLtrRQQO5CitzTeciTwPwQUJkm+JIxuoba13Oth8Ao3CV+JW9GPh SpprhK2fgiNNBLKm/NK16cjHz+Dl3mw+ONJ9zr3X9M9v0AYxl5xHQqdtc 23joolTZKl9HU6PLtX1bN1eo1F7lASKENE6Jjr95k7zUxTxvMbVvbsHPQ g==; X-IronPort-AV: E=McAfee;i="6600,9927,10770"; a="345496837" X-IronPort-AV: E=Sophos;i="6.01,202,1684825200"; d="scan'208";a="345496837" Received: from fmsmga006.fm.intel.com ([10.253.24.20]) by fmsmga107.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 13 Jul 2023 06:20:57 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10770"; a="968615885" X-IronPort-AV: E=Sophos;i="6.01,202,1684825200"; d="scan'208";a="968615885" Received: from ijarvine-mobl2.ger.corp.intel.com ([10.251.222.39]) by fmsmga006-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 13 Jul 2023 06:20:55 -0700 From: =?UTF-8?q?Ilpo=20J=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=20J=C3=A4rvinen?= Subject: [PATCH v4 12/19] selftests/resctrl: Remove "malloc_and_init_memory" param from run_fill_buf() Date: Thu, 13 Jul 2023 16:19:25 +0300 Message-Id: <20230713131932.133258-13-ilpo.jarvinen@linux.intel.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20230713131932.133258-1-ilpo.jarvinen@linux.intel.com> References: <20230713131932.133258-1-ilpo.jarvinen@linux.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org run_fill_buf()'s malloc_and_init_memory parameter is always 1. There's also duplicated memory init code for malloc_and_init_memory =3D=3D 0 case in fill_buf() which is unused. Remove the malloc_and_init_memory parameter and the duplicated mem init code. While at it, fix also a typo in run_fill_buf() prototype's argument. Co-developed-by: Fenghua Yu Signed-off-by: Fenghua Yu Signed-off-by: Ilpo J=C3=A4rvinen --- tools/testing/selftests/resctrl/cache.c | 6 ++-- tools/testing/selftests/resctrl/fill_buf.c | 28 +++---------------- tools/testing/selftests/resctrl/resctrl.h | 3 +- .../testing/selftests/resctrl/resctrl_tests.c | 13 ++++----- tools/testing/selftests/resctrl/resctrlfs.c | 12 ++++---- 5 files changed, 19 insertions(+), 43 deletions(-) diff --git a/tools/testing/selftests/resctrl/cache.c b/tools/testing/selfte= sts/resctrl/cache.c index f2c7d322bd76..0db97b6a542f 100644 --- a/tools/testing/selftests/resctrl/cache.c +++ b/tools/testing/selftests/resctrl/cache.c @@ -211,7 +211,7 @@ int measure_cache_vals(struct resctrl_val_param *param,= int bm_pid) */ int cat_val(struct resctrl_val_param *param) { - int malloc_and_init_memory =3D 1, memflush =3D 1, operation =3D 0, ret = =3D 0; + int memflush =3D 1, operation =3D 0, ret =3D 0; char *resctrl_val =3D param->resctrl_val; pid_t bm_pid; =20 @@ -248,8 +248,8 @@ int cat_val(struct resctrl_val_param *param) if (ret) break; =20 - if (run_fill_buf(param->span, malloc_and_init_memory, - memflush, operation, resctrl_val)) { + if (run_fill_buf(param->span, memflush, operation, + resctrl_val)) { fprintf(stderr, "Error-running fill buffer\n"); ret =3D -1; close(fd_lm); diff --git a/tools/testing/selftests/resctrl/fill_buf.c b/tools/testing/sel= ftests/resctrl/fill_buf.c index 785cbd8d0148..d8f5505eb9e6 100644 --- a/tools/testing/selftests/resctrl/fill_buf.c +++ b/tools/testing/selftests/resctrl/fill_buf.c @@ -138,36 +138,18 @@ static int fill_cache_write(unsigned char *start_ptr,= unsigned char *end_ptr, return 0; } =20 -static int -fill_cache(size_t buf_size, int malloc_and_init, int memflush, - int op, char *resctrl_val) +static int fill_cache(size_t buf_size, int memflush, int op, char *resctrl= _val) { unsigned char *start_ptr, *end_ptr; - unsigned long long i; int ret; =20 - if (malloc_and_init) - start_ptr =3D malloc_and_init_memory(buf_size); - else - start_ptr =3D malloc(buf_size); - + start_ptr =3D malloc_and_init_memory(buf_size); if (!start_ptr) return -1; =20 startptr =3D start_ptr; end_ptr =3D start_ptr + buf_size; =20 - /* - * It's better to touch the memory once to avoid any compiler - * optimizations - */ - if (!malloc_and_init) { - for (i =3D 0; i < buf_size; i++) - *start_ptr++ =3D (unsigned char)rand(); - } - - start_ptr =3D startptr; - /* Flush the memory before using to avoid "cache hot pages" effect */ if (memflush) mem_flush(start_ptr, buf_size); @@ -188,14 +170,12 @@ fill_cache(size_t buf_size, int malloc_and_init, int = memflush, return 0; } =20 -int run_fill_buf(size_t span, int malloc_and_init_memory, int memflush, in= t op, - char *resctrl_val) +int run_fill_buf(size_t span, int memflush, int op, char *resctrl_val) { size_t cache_size =3D span; int ret; =20 - ret =3D fill_cache(cache_size, malloc_and_init_memory, memflush, op, - resctrl_val); + ret =3D fill_cache(cache_size, memflush, op, resctrl_val); if (ret) { printf("\n Error in fill cache\n"); return -1; diff --git a/tools/testing/selftests/resctrl/resctrl.h b/tools/testing/self= tests/resctrl/resctrl.h index 52068ceea956..3054cc4ef0e3 100644 --- a/tools/testing/selftests/resctrl/resctrl.h +++ b/tools/testing/selftests/resctrl/resctrl.h @@ -97,8 +97,7 @@ int write_bm_pid_to_resctrl(pid_t bm_pid, char *ctrlgrp, = char *mongrp, char *resctrl_val); int perf_event_open(struct perf_event_attr *hw_event, pid_t pid, int cpu, int group_fd, unsigned long flags); -int run_fill_buf(size_t span, int malloc_and_init_memory, int memflush, in= t op, - char *resctrl_va); +int run_fill_buf(size_t span, int memflush, int op, char *resctrl_val); int resctrl_val(char **benchmark_cmd, struct resctrl_val_param *param); int mbm_bw_change(size_t span, int cpu_no, char *bw_report, char **benchma= rk_cmd); void tests_cleanup(void); diff --git a/tools/testing/selftests/resctrl/resctrl_tests.c b/tools/testin= g/selftests/resctrl/resctrl_tests.c index 6e693f381a6e..0c313054326d 100644 --- a/tools/testing/selftests/resctrl/resctrl_tests.c +++ b/tools/testing/selftests/resctrl/resctrl_tests.c @@ -89,7 +89,7 @@ static void run_mbm_test(bool has_ben, char **benchmark_c= md, size_t span, } =20 if (!has_ben) - sprintf(benchmark_cmd[5], "%s", MBA_STR); + sprintf(benchmark_cmd[4], "%s", MBA_STR); res =3D mbm_bw_change(span, cpu_no, bw_report, benchmark_cmd); ksft_test_result(!res, "MBM: bw change\n"); if ((get_vendor() =3D=3D ARCH_INTEL) && res) @@ -141,7 +141,7 @@ static void run_cmt_test(bool has_ben, char **benchmark= _cmd, int cpu_no) } =20 if (!has_ben) - sprintf(benchmark_cmd[5], "%s", CMT_STR); + sprintf(benchmark_cmd[4], "%s", CMT_STR); res =3D cmt_resctrl_val(cpu_no, 5, benchmark_cmd); ksft_test_result(!res, "CMT: test\n"); if ((get_vendor() =3D=3D ARCH_INTEL) && res) @@ -267,16 +267,15 @@ int main(int argc, char **argv) benchmark_cmd[ben_count] =3D NULL; } else { /* If no benchmark is given by "-b" argument, use fill_buf. */ - for (i =3D 0; i < 6; i++) + for (i =3D 0; i < 5; i++) benchmark_cmd[i] =3D benchmark_cmd_area[i]; =20 strcpy(benchmark_cmd[0], "fill_buf"); sprintf(benchmark_cmd[1], "%zu", span); strcpy(benchmark_cmd[2], "1"); - strcpy(benchmark_cmd[3], "1"); - strcpy(benchmark_cmd[4], "0"); - strcpy(benchmark_cmd[5], ""); - benchmark_cmd[6] =3D NULL; + strcpy(benchmark_cmd[3], "0"); + strcpy(benchmark_cmd[4], ""); + benchmark_cmd[5] =3D NULL; } =20 sprintf(bw_report, "reads"); diff --git a/tools/testing/selftests/resctrl/resctrlfs.c b/tools/testing/se= lftests/resctrl/resctrlfs.c index 847e0a80c6cd..5f41ce03c470 100644 --- a/tools/testing/selftests/resctrl/resctrlfs.c +++ b/tools/testing/selftests/resctrl/resctrlfs.c @@ -297,7 +297,7 @@ int taskset_benchmark(pid_t bm_pid, int cpu_no) */ void run_benchmark(int signum, siginfo_t *info, void *ucontext) { - int operation, ret, malloc_and_init_memory, memflush; + int operation, ret, memflush; char **benchmark_cmd; char resctrl_val[64]; size_t span; @@ -316,13 +316,11 @@ void run_benchmark(int signum, siginfo_t *info, void = *ucontext) if (strcmp(benchmark_cmd[0], "fill_buf") =3D=3D 0) { /* Execute default fill_buf benchmark */ span =3D strtoul(benchmark_cmd[1], NULL, 10); - malloc_and_init_memory =3D atoi(benchmark_cmd[2]); - memflush =3D atoi(benchmark_cmd[3]); - operation =3D atoi(benchmark_cmd[4]); - sprintf(resctrl_val, "%s", benchmark_cmd[5]); + memflush =3D atoi(benchmark_cmd[2]); + operation =3D atoi(benchmark_cmd[3]); + sprintf(resctrl_val, "%s", benchmark_cmd[4]); =20 - if (run_fill_buf(span, malloc_and_init_memory, memflush, - operation, resctrl_val)) + if (run_fill_buf(span, memflush, operation, resctrl_val)) fprintf(stderr, "Error in running fill buffer\n"); } else { /* Execute specified benchmark */ --=20 2.30.2