From nobody Thu Feb 12 00:27:48 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 C912DC77B6E for ; Wed, 12 Apr 2023 13:23:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231181AbjDLNXF (ORCPT ); Wed, 12 Apr 2023 09:23:05 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50056 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230403AbjDLNWs (ORCPT ); Wed, 12 Apr 2023 09:22:48 -0400 Received: from mga02.intel.com (mga02.intel.com [134.134.136.20]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8A85B100; Wed, 12 Apr 2023 06:22:26 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1681305746; x=1712841746; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=5LdqeCjlUNN//g8wQKDBwpqlqMzd6xip8HIfAleJhmY=; b=al235j+vB58+940KetJVVRf6+LN0GgS0wylHuirN/mDF4RAj/NU4F5Nz PVZ+i1bl9KkoyAA/KHPGsTmVJWzAJjLG8FIvKubK7eYd6Cd0TWVQxEKqy fAzu6cBPG4XuN7YSNJ1aREMxMPqaxALtU0xyHMoxB+u4F6evJRuChxQir C01YjaprF/de/SoY+x2iVduxh+/MChHo2Azj7v91Vqt/2Y/MwVzxa84M+ AxKswpdml345P93jyqOmcdzbZ5c4MoCPd9Dctfe0sth9nj/DPwFjiqwvL Gnys2wAliGd68vACJjBPoUTYJXYiesPTQ4nLfV4OW3ef3oJw3LUwVxIsP Q==; X-IronPort-AV: E=McAfee;i="6600,9927,10678"; a="332590102" X-IronPort-AV: E=Sophos;i="5.98,339,1673942400"; d="scan'208";a="332590102" Received: from orsmga003.jf.intel.com ([10.7.209.27]) by orsmga101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 12 Apr 2023 06:22:01 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10678"; a="639230063" X-IronPort-AV: E=Sophos;i="5.98,339,1673942400"; d="scan'208";a="639230063" Received: from chanse1-mobl2.ger.corp.intel.com (HELO ijarvine-MOBL2.ger.corp.intel.com) ([10.251.213.80]) by orsmga003-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 12 Apr 2023 06:21:59 -0700 From: =?UTF-8?q?Ilpo=20J=C3=A4rvinen?= To: linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org, Reinette Chatre , Fenghua Yu , Shuah Khan Cc: Shaopeng Tan , =?UTF-8?q?Ilpo=20J=C3=A4rvinen?= Subject: [PATCH 07/22] selftests/resctrl: Remove "malloc_and_init_memory" param from run_fill_buf() Date: Wed, 12 Apr 2023 16:21:07 +0300 Message-Id: <20230412132122.29452-8-ilpo.jarvinen@linux.intel.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20230412132122.29452-1-ilpo.jarvinen@linux.intel.com> References: <20230412132122.29452-1-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 | 27 +++---------------- 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(+), 42 deletions(-) diff --git a/tools/testing/selftests/resctrl/cache.c b/tools/testing/selfte= sts/resctrl/cache.c index 11105ba30eff..ed5ec8a78c30 100644 --- a/tools/testing/selftests/resctrl/cache.c +++ b/tools/testing/selftests/resctrl/cache.c @@ -212,7 +212,7 @@ 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 @@ -249,8 +249,8 @@ 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; break; diff --git a/tools/testing/selftests/resctrl/fill_buf.c b/tools/testing/sel= ftests/resctrl/fill_buf.c index 3cd0b337eae5..b1e883ecbd60 100644 --- a/tools/testing/selftests/resctrl/fill_buf.c +++ b/tools/testing/selftests/resctrl/fill_buf.c @@ -147,35 +147,18 @@ static int fill_cache_write(unsigned char *start_ptr,= unsigned char *end_ptr, } =20 static int -fill_cache(unsigned long long buf_size, int malloc_and_init, int memflush, - int op, char *resctrl_val) +fill_cache(unsigned long long buf_size, int memflush, int op, char *resctr= l_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); @@ -195,8 +178,7 @@ fill_cache(unsigned long long buf_size, int malloc_and_= init, int memflush, return 0; } =20 -int run_fill_buf(unsigned long span, int malloc_and_init_memory, - int memflush, int op, char *resctrl_val) +int run_fill_buf(unsigned long span, int memflush, int op, char *resctrl_v= al) { unsigned long long cache_size =3D span; int ret; @@ -207,8 +189,7 @@ int run_fill_buf(unsigned long span, int malloc_and_ini= t_memory, if (signal(SIGHUP, ctrl_handler) =3D=3D SIG_ERR) printf("Failed to catch SIGHUP!\n"); =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 1d80cd76c24a..037c6914d27a 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(unsigned long span, int malloc_and_init_memory, int memfl= ush, - int op, char *resctrl_va); +int run_fill_buf(unsigned long span, int memflush, int op, char *resctrl_v= al); int resctrl_val(char **benchmark_cmd, struct resctrl_val_param *param); int mbm_bw_change(unsigned long span, int cpu_no, char *bw_report, char **= benchmark_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 3ca6f09f5195..c80783ca5be3 100644 --- a/tools/testing/selftests/resctrl/resctrl_tests.c +++ b/tools/testing/selftests/resctrl/resctrl_tests.c @@ -83,7 +83,7 @@ static void run_mbm_test(bool has_ben, char **benchmark_c= md, unsigned long 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) @@ -119,7 +119,7 @@ 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) @@ -235,16 +235,15 @@ 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], "%lu", 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 9a58db077be6..1864911c2556 100644 --- a/tools/testing/selftests/resctrl/resctrlfs.c +++ b/tools/testing/selftests/resctrl/resctrlfs.c @@ -305,7 +305,7 @@ 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; unsigned long span; char **benchmark_cmd; char resctrl_val[64]; @@ -324,13 +324,11 @@ 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