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 sprintf(benchmark_cmd[5], "%s", MBA_STR);
65 res = mbm_bw_change(span, cpu_no, bw_report, benchmark_cmd);
66 ksft_test_result(!res, "MBM: bw change\n");
70 static void run_mba_test(bool has_ben, char **benchmark_cmd, int span,
71 int cpu_no, char *bw_report)
75 ksft_print_msg("Starting MBA Schemata change ...\n");
77 sprintf(benchmark_cmd[1], "%d", span);
78 res = mba_schemata_change(cpu_no, bw_report, benchmark_cmd);
79 ksft_test_result(!res, "MBA: schemata change\n");
83 static void run_cmt_test(bool has_ben, char **benchmark_cmd, int cpu_no)
87 ksft_print_msg("Starting CMT test ...\n");
89 sprintf(benchmark_cmd[5], "%s", CMT_STR);
90 res = cmt_resctrl_val(cpu_no, 5, benchmark_cmd);
91 ksft_test_result(!res, "CMT: test\n");
95 static void run_cat_test(int cpu_no, int no_of_bits)
99 ksft_print_msg("Starting CAT test ...\n");
100 res = cat_perf_miss_val(cpu_no, no_of_bits, "L3");
101 ksft_test_result(!res, "CAT: test\n");
105 int main(int argc, char **argv)
107 bool has_ben = false, mbm_test = true, mba_test = true, cmt_test = true;
108 int c, cpu_no = 1, span = 250, argc_new = argc, i, no_of_bits = 0;
109 char *benchmark_cmd[BENCHMARK_ARGS], bw_report[64], bm_type[64];
110 char benchmark_cmd_area[BENCHMARK_ARGS][BENCHMARK_ARG_SIZE];
111 int ben_ind, ben_count, tests = 0;
112 bool cat_test = true;
114 for (i = 0; i < argc; i++) {
115 if (strcmp(argv[i], "-b") == 0) {
117 ben_count = argc - ben_ind;
118 argc_new = ben_ind - 1;
124 while ((c = getopt(argc_new, argv, "ht:b:n:p:")) != -1) {
129 token = strtok(optarg, ",");
136 if (!strncmp(token, MBM_STR, sizeof(MBM_STR))) {
139 } else if (!strncmp(token, MBA_STR, sizeof(MBA_STR))) {
142 } else if (!strncmp(token, CMT_STR, sizeof(CMT_STR))) {
145 } else if (!strncmp(token, CAT_STR, sizeof(CAT_STR))) {
149 printf("invalid argument\n");
153 token = strtok(NULL, ":\t");
157 cpu_no = atoi(optarg);
160 no_of_bits = atoi(optarg);
161 if (no_of_bits <= 0) {
162 printf("Bail out! invalid argument for no_of_bits\n");
171 printf("invalid argument\n");
180 * Typically we need root privileges, because:
181 * 1. We write to resctrl FS
182 * 2. We execute perf commands
185 return ksft_exit_fail_msg("Not running as root, abort testing.\n");
187 /* Detect AMD vendor */
191 /* Extract benchmark command from command line. */
192 for (i = ben_ind; i < argc; i++) {
193 benchmark_cmd[i - ben_ind] = benchmark_cmd_area[i];
194 sprintf(benchmark_cmd[i - ben_ind], "%s", argv[i]);
196 benchmark_cmd[ben_count] = NULL;
198 /* If no benchmark is given by "-b" argument, use fill_buf. */
199 for (i = 0; i < 6; i++)
200 benchmark_cmd[i] = benchmark_cmd_area[i];
202 strcpy(benchmark_cmd[0], "fill_buf");
203 sprintf(benchmark_cmd[1], "%d", span);
204 strcpy(benchmark_cmd[2], "1");
205 strcpy(benchmark_cmd[3], "1");
206 strcpy(benchmark_cmd[4], "0");
207 strcpy(benchmark_cmd[5], "");
208 benchmark_cmd[6] = NULL;
211 sprintf(bw_report, "reads");
212 sprintf(bm_type, "fill_buf");
214 if (!check_resctrlfs_support())
215 return ksft_exit_fail_msg("resctrl FS does not exist\n");
219 ksft_set_plan(tests ? : 4);
221 if (!is_amd && mbm_test)
222 run_mbm_test(has_ben, benchmark_cmd, span, cpu_no, bw_report);
224 if (!is_amd && mba_test)
225 run_mba_test(has_ben, benchmark_cmd, span, cpu_no, bw_report);
228 run_cmt_test(has_ben, benchmark_cmd, cpu_no);
231 run_cat_test(cpu_no, no_of_bits);
233 return ksft_exit_pass();