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 CMT\n");
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, cmt, 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 static void run_mbm_test(bool has_ben, char **benchmark_cmd, int span,
58 int cpu_no, char *bw_report)
62 ksft_print_msg("Starting MBM BW change ...\n");
64 if (!validate_resctrl_feature_request(MBM_STR)) {
65 ksft_test_result_skip("Hardware does not support MBM or MBM is disabled\n");
70 sprintf(benchmark_cmd[5], "%s", MBA_STR);
71 res = mbm_bw_change(span, cpu_no, bw_report, benchmark_cmd);
72 ksft_test_result(!res, "MBM: bw change\n");
76 static void run_mba_test(bool has_ben, char **benchmark_cmd, int span,
77 int cpu_no, char *bw_report)
81 ksft_print_msg("Starting MBA Schemata change ...\n");
83 if (!validate_resctrl_feature_request(MBA_STR)) {
84 ksft_test_result_skip("Hardware does not support MBA or MBA is disabled\n");
89 sprintf(benchmark_cmd[1], "%d", span);
90 res = mba_schemata_change(cpu_no, bw_report, benchmark_cmd);
91 ksft_test_result(!res, "MBA: schemata change\n");
95 static void run_cmt_test(bool has_ben, char **benchmark_cmd, int cpu_no)
99 ksft_print_msg("Starting CMT test ...\n");
100 if (!validate_resctrl_feature_request(CMT_STR)) {
101 ksft_test_result_skip("Hardware does not support CMT or CMT is disabled\n");
106 sprintf(benchmark_cmd[5], "%s", CMT_STR);
107 res = cmt_resctrl_val(cpu_no, 5, benchmark_cmd);
108 ksft_test_result(!res, "CMT: test\n");
112 static void run_cat_test(int cpu_no, int no_of_bits)
116 ksft_print_msg("Starting CAT test ...\n");
118 if (!validate_resctrl_feature_request(CAT_STR)) {
119 ksft_test_result_skip("Hardware does not support CAT or CAT is disabled\n");
123 res = cat_perf_miss_val(cpu_no, no_of_bits, "L3");
124 ksft_test_result(!res, "CAT: test\n");
128 int main(int argc, char **argv)
130 bool has_ben = false, mbm_test = true, mba_test = true, cmt_test = true;
131 int c, cpu_no = 1, span = 250, argc_new = argc, i, no_of_bits = 0;
132 char *benchmark_cmd[BENCHMARK_ARGS], bw_report[64], bm_type[64];
133 char benchmark_cmd_area[BENCHMARK_ARGS][BENCHMARK_ARG_SIZE];
134 int ben_ind, ben_count, tests = 0;
135 bool cat_test = true;
137 for (i = 0; i < argc; i++) {
138 if (strcmp(argv[i], "-b") == 0) {
140 ben_count = argc - ben_ind;
141 argc_new = ben_ind - 1;
147 while ((c = getopt(argc_new, argv, "ht:b:n:p:")) != -1) {
152 token = strtok(optarg, ",");
159 if (!strncmp(token, MBM_STR, sizeof(MBM_STR))) {
162 } else if (!strncmp(token, MBA_STR, sizeof(MBA_STR))) {
165 } else if (!strncmp(token, CMT_STR, sizeof(CMT_STR))) {
168 } else if (!strncmp(token, CAT_STR, sizeof(CAT_STR))) {
172 printf("invalid argument\n");
176 token = strtok(NULL, ":\t");
180 cpu_no = atoi(optarg);
183 no_of_bits = atoi(optarg);
184 if (no_of_bits <= 0) {
185 printf("Bail out! invalid argument for no_of_bits\n");
194 printf("invalid argument\n");
203 * Typically we need root privileges, because:
204 * 1. We write to resctrl FS
205 * 2. We execute perf commands
208 return ksft_exit_fail_msg("Not running as root, abort testing.\n");
210 /* Detect AMD vendor */
214 /* Extract benchmark command from command line. */
215 for (i = ben_ind; i < argc; i++) {
216 benchmark_cmd[i - ben_ind] = benchmark_cmd_area[i];
217 sprintf(benchmark_cmd[i - ben_ind], "%s", argv[i]);
219 benchmark_cmd[ben_count] = NULL;
221 /* If no benchmark is given by "-b" argument, use fill_buf. */
222 for (i = 0; i < 6; i++)
223 benchmark_cmd[i] = benchmark_cmd_area[i];
225 strcpy(benchmark_cmd[0], "fill_buf");
226 sprintf(benchmark_cmd[1], "%d", span);
227 strcpy(benchmark_cmd[2], "1");
228 strcpy(benchmark_cmd[3], "1");
229 strcpy(benchmark_cmd[4], "0");
230 strcpy(benchmark_cmd[5], "");
231 benchmark_cmd[6] = NULL;
234 sprintf(bw_report, "reads");
235 sprintf(bm_type, "fill_buf");
237 if (!check_resctrlfs_support())
238 return ksft_exit_fail_msg("resctrl FS does not exist\n");
242 ksft_set_plan(tests ? : 4);
244 if (!is_amd && mbm_test)
245 run_mbm_test(has_ben, benchmark_cmd, span, cpu_no, bw_report);
247 if (!is_amd && mba_test)
248 run_mba_test(has_ben, benchmark_cmd, span, cpu_no, bw_report);
251 run_cmt_test(has_ben, benchmark_cmd, cpu_no);
254 run_cat_test(cpu_no, no_of_bits);
258 return ksft_exit_pass();