1 // SPDX-License-Identifier: GPL-2.0
5 * Copyright (C) 2018 Intel Corporation
8 * Sai Praneeth Prakhya <sai.praneeth.prakhya@intel.com>,
9 * Fenghua Yu <fenghua.yu@intel.com>
13 #define BENCHMARK_ARGS 64
14 #define BENCHMARK_ARG_SIZE 64
20 FILE *inf = fopen("/proc/cpuinfo", "r");
26 res = fgrep(inf, "vendor_id");
29 char *s = strchr(res, ':');
31 is_amd = s && !strcmp(s, ": AuthenticAMD\n");
37 static void cmd_help(void)
39 printf("usage: resctrl_tests [-h] [-b \"benchmark_cmd [options]\"] [-t test list] [-n no_of_bits]\n");
40 printf("\t-b benchmark_cmd [options]: run specified benchmark for MBM, MBA and CQM");
41 printf("\t default benchmark is builtin fill_buf\n");
42 printf("\t-t test list: run tests specified in the test list, ");
43 printf("e.g. -t mbm, mba, cqm, cat\n");
44 printf("\t-n no_of_bits: run cache tests using specified no of bits in cache bit mask\n");
45 printf("\t-p cpu_no: specify CPU number to run the test. 1 is default\n");
46 printf("\t-h: help\n");
49 void tests_cleanup(void)
57 int main(int argc, char **argv)
59 bool has_ben = false, mbm_test = true, mba_test = true, cqm_test = true;
60 int res, c, cpu_no = 1, span = 250, argc_new = argc, i, no_of_bits = 5;
61 char *benchmark_cmd[BENCHMARK_ARGS], bw_report[64], bm_type[64];
62 char benchmark_cmd_area[BENCHMARK_ARGS][BENCHMARK_ARG_SIZE];
63 int ben_ind, ben_count;
66 for (i = 0; i < argc; i++) {
67 if (strcmp(argv[i], "-b") == 0) {
69 ben_count = argc - ben_ind;
70 argc_new = ben_ind - 1;
76 while ((c = getopt(argc_new, argv, "ht:b:")) != -1) {
81 token = strtok(optarg, ",");
88 if (!strcmp(token, "mbm")) {
90 } else if (!strcmp(token, "mba")) {
92 } else if (!strcmp(token, "cqm")) {
94 } else if (!strcmp(token, "cat")) {
97 printf("invalid argument\n");
101 token = strtok(NULL, ":\t");
105 cpu_no = atoi(optarg);
108 no_of_bits = atoi(optarg);
115 printf("invalid argument\n");
121 printf("TAP version 13\n");
124 * Typically we need root privileges, because:
125 * 1. We write to resctrl FS
126 * 2. We execute perf commands
129 printf("# WARNING: not running as root, tests may fail.\n");
131 /* Detect AMD vendor */
135 /* Extract benchmark command from command line. */
136 for (i = ben_ind; i < argc; i++) {
137 benchmark_cmd[i - ben_ind] = benchmark_cmd_area[i];
138 sprintf(benchmark_cmd[i - ben_ind], "%s", argv[i]);
140 benchmark_cmd[ben_count] = NULL;
142 /* If no benchmark is given by "-b" argument, use fill_buf. */
143 for (i = 0; i < 6; i++)
144 benchmark_cmd[i] = benchmark_cmd_area[i];
146 strcpy(benchmark_cmd[0], "fill_buf");
147 sprintf(benchmark_cmd[1], "%d", span);
148 strcpy(benchmark_cmd[2], "1");
149 strcpy(benchmark_cmd[3], "1");
150 strcpy(benchmark_cmd[4], "0");
151 strcpy(benchmark_cmd[5], "");
152 benchmark_cmd[6] = NULL;
155 sprintf(bw_report, "reads");
156 sprintf(bm_type, "fill_buf");
158 check_resctrlfs_support();
161 if (!is_amd && mbm_test) {
162 printf("# Starting MBM BW change ...\n");
164 sprintf(benchmark_cmd[5], "%s", "mba");
165 res = mbm_bw_change(span, cpu_no, bw_report, benchmark_cmd);
166 printf("%sok MBM: bw change\n", res ? "not " : "");
171 if (!is_amd && mba_test) {
172 printf("# Starting MBA Schemata change ...\n");
174 sprintf(benchmark_cmd[1], "%d", span);
175 res = mba_schemata_change(cpu_no, bw_report, benchmark_cmd);
176 printf("%sok MBA: schemata change\n", res ? "not " : "");
182 printf("# Starting CQM test ...\n");
184 sprintf(benchmark_cmd[5], "%s", "cqm");
185 res = cqm_resctrl_val(cpu_no, no_of_bits, benchmark_cmd);
186 printf("%sok CQM: test\n", res ? "not " : "");
192 printf("# Starting CAT test ...\n");
193 res = cat_perf_miss_val(cpu_no, no_of_bits, "L3");
194 printf("%sok CAT: test\n", res ? "not " : "");
199 printf("1..%d\n", tests_run);