// SPDX-License-Identifier: GPL-2.0/* * Resctrl tests * * Copyright (C) 2018 Intel Corporation * * Authors: * Sai Praneeth Prakhya <sai.praneeth.prakhya@intel.com>, * Fenghua Yu <fenghua.yu@intel.com> */#include "resctrl.h" #define BENCHMARK_ARGS 64#define BENCHMARK_ARG_SIZE 64 bool is_amd; void detect_amd(void){ FILE *inf = fopen("/proc/cpuinfo", "r"); char *res; if (!inf) return; res = fgrep(inf, "vendor_id"); if (res) { char *s = strchr(res, ':'); is_amd = s && !strcmp(s, ": AuthenticAMD\n"); free(res); } fclose(inf);} static void cmd_help(void){ printf("usage: resctrl_tests [-h] [-b \"benchmark_cmd [options]\"] [-t test list] [-n no_of_bits]\n"); printf("\t-b benchmark_cmd [options]: run specified benchmark for MBM, MBA and CQM"); printf("\t default benchmark is builtin fill_buf\n"); printf("\t-t test list: run tests specified in the test list, "); printf("e.g. -t mbm, mba, cqm, cat\n"); printf("\t-n no_of_bits: run cache tests using specified no of bits in cache bit mask\n"); printf("\t-p cpu_no: specify CPU number to run the test. 1 is default\n"); printf("\t-h: help\n");} void tests_cleanup(void){ mbm_test_cleanup(); mba_test_cleanup(); cqm_test_cleanup(); cat_test_cleanup();} int main(int argc, char **argv){ bool has_ben = false, mbm_test = true, mba_test = true, cqm_test = true; int res, c, cpu_no = 1, span = 250, argc_new = argc, i, no_of_bits = 5; char *benchmark_cmd[BENCHMARK_ARGS], bw_report[64], bm_type[64]; char benchmark_cmd_area[BENCHMARK_ARGS][BENCHMARK_ARG_SIZE]; int ben_ind, ben_count; bool cat_test = true; for (i = 0; i < argc; i++) { if (strcmp(argv[i], "-b") == 0) { ben_ind = i + 1; ben_count = argc - ben_ind; argc_new = ben_ind - 1; has_ben = true; break; } } while ((c = getopt(argc_new, argv, "ht:b:")) != -1) { char *token; switch (c) { case 't': token = strtok(optarg, ","); mbm_test = false; mba_test = false; cqm_test = false; cat_test = false; while (token) { if (!strcmp(token, "mbm")) { mbm_test = true; } else if (!strcmp(token, "mba")) { mba_test = true; } else if (!strcmp(token, "cqm")) { cqm_test = true; } else if (!strcmp(token, "cat")) { cat_test = true; } else { printf("invalid argument\n"); return -1; } token = strtok(NULL, ":\t"); } break; case 'p': cpu_no = atoi(optarg); break; case 'n': no_of_bits = atoi(optarg); break; case 'h': cmd_help(); return 0; default: printf("invalid argument\n"); return -1; } } printf("TAP version 13\n"); /* * Typically we need root privileges, because: * 1. We write to resctrl FS * 2. We execute perf commands */ if (geteuid() != 0) printf("# WARNING: not running as root, tests may fail.\n"); /* Detect AMD vendor */ detect_amd(); if (has_ben) { /* Extract benchmark command from command line. */ for (i = ben_ind; i < argc; i++) { benchmark_cmd[i - ben_ind] = benchmark_cmd_area[i]; sprintf(benchmark_cmd[i - ben_ind], "%s", argv[i]); } benchmark_cmd[ben_count] = NULL; } else { /* If no benchmark is given by "-b" argument, use fill_buf. */ for (i = 0; i < 6; i++) benchmark_cmd[i] = benchmark_cmd_area[i]; strcpy(benchmark_cmd[0], "fill_buf"); sprintf(benchmark_cmd[1], "%d", span); strcpy(benchmark_cmd[2], "1"); strcpy(benchmark_cmd[3], "1"); strcpy(benchmark_cmd[4], "0"); strcpy(benchmark_cmd[5], ""); benchmark_cmd[6] = NULL; } sprintf(bw_report, "reads"); sprintf(bm_type, "fill_buf"); check_resctrlfs_support(); filter_dmesg(); if (!is_amd && mbm_test) { printf("# Starting MBM BW change ...\n"); if (!has_ben) sprintf(benchmark_cmd[5], "%s", "mba"); res = mbm_bw_change(span, cpu_no, bw_report, benchmark_cmd); printf("%sok MBM: bw change\n", res ? "not " : ""); mbm_test_cleanup(); tests_run++; } if (!is_amd && mba_test) { printf("# Starting MBA Schemata change ...\n"); if (!has_ben) sprintf(benchmark_cmd[1], "%d", span); res = mba_schemata_change(cpu_no, bw_report, benchmark_cmd); printf("%sok MBA: schemata change\n", res ? "not " : ""); mba_test_cleanup(); tests_run++; } if (cqm_test) { printf("# Starting CQM test ...\n"); if (!has_ben) sprintf(benchmark_cmd[5], "%s", "cqm"); res = cqm_resctrl_val(cpu_no, no_of_bits, benchmark_cmd); printf("%sok CQM: test\n", res ? "not " : ""); cqm_test_cleanup(); tests_run++; } if (cat_test) { printf("# Starting CAT test ...\n"); res = cat_perf_miss_val(cpu_no, no_of_bits, "L3"); printf("%sok CAT: test\n", res ? "not " : ""); tests_run++; cat_test_cleanup(); } printf("1..%d\n", tests_run); return 0;}
// SPDX-License-Identifier: GPL-2.0
/*
* Resctrl tests
*
* Copyright (C) 2018 Intel Corporation
*
* Authors:
* Sai Praneeth Prakhya <sai.praneeth.prakhya@intel.com>,
* Fenghua Yu <fenghua.yu@intel.com>
*/
#include "resctrl.h"
#define BENCHMARK_ARGS 64
#define BENCHMARK_ARG_SIZE 64
bool is_amd;
void detect_amd(void)
{
FILE *inf = fopen("/proc/cpuinfo", "r");
char *res;
if (!inf)
return;
res = fgrep(inf, "vendor_id");
if (res) {
char *s = strchr(res, ':');
is_amd = s && !strcmp(s, ": AuthenticAMD\n");
free(res);
}
fclose(inf);
}
static void cmd_help(void)
{
printf("usage: resctrl_tests [-h] [-b \"benchmark_cmd [options]\"] [-t test list] [-n no_of_bits]\n");
printf("\t-b benchmark_cmd [options]: run specified benchmark for MBM, MBA and CQM");
printf("\t default benchmark is builtin fill_buf\n");
printf("\t-t test list: run tests specified in the test list, ");
printf("e.g. -t mbm, mba, cqm, cat\n");
printf("\t-n no_of_bits: run cache tests using specified no of bits in cache bit mask\n");
printf("\t-p cpu_no: specify CPU number to run the test. 1 is default\n");
printf("\t-h: help\n");
}
void tests_cleanup(void)
{
mbm_test_cleanup();
mba_test_cleanup();
cqm_test_cleanup();
cat_test_cleanup();
}
int main(int argc, char **argv)
{
bool has_ben = false, mbm_test = true, mba_test = true, cqm_test = true;
int res, c, cpu_no = 1, span = 250, argc_new = argc, i, no_of_bits = 5;
char *benchmark_cmd[BENCHMARK_ARGS], bw_report[64], bm_type[64];
char benchmark_cmd_area[BENCHMARK_ARGS][BENCHMARK_ARG_SIZE];
int ben_ind, ben_count;
bool cat_test = true;
for (i = 0; i < argc; i++) {
if (strcmp(argv[i], "-b") == 0) {
ben_ind = i + 1;
ben_count = argc - ben_ind;
argc_new = ben_ind - 1;
has_ben = true;
break;
}
}
while ((c = getopt(argc_new, argv, "ht:b:")) != -1) {
char *token;
switch (c) {
case 't':
token = strtok(optarg, ",");
mbm_test = false;
mba_test = false;
cqm_test = false;
cat_test = false;
while (token) {
if (!strcmp(token, "mbm")) {
mbm_test = true;
} else if (!strcmp(token, "mba")) {
mba_test = true;
} else if (!strcmp(token, "cqm")) {
cqm_test = true;
} else if (!strcmp(token, "cat")) {
cat_test = true;
} else {
printf("invalid argument\n");
return -1;
}
token = strtok(NULL, ":\t");
}
break;
case 'p':
cpu_no = atoi(optarg);
break;
case 'n':
no_of_bits = atoi(optarg);
break;
case 'h':
cmd_help();
return 0;
default:
printf("invalid argument\n");
return -1;
}
}
printf("TAP version 13\n");
/*
* Typically we need root privileges, because:
* 1. We write to resctrl FS
* 2. We execute perf commands
*/
if (geteuid() != 0)
printf("# WARNING: not running as root, tests may fail.\n");
/* Detect AMD vendor */
detect_amd();
if (has_ben) {
/* Extract benchmark command from command line. */
for (i = ben_ind; i < argc; i++) {
benchmark_cmd[i - ben_ind] = benchmark_cmd_area[i];
sprintf(benchmark_cmd[i - ben_ind], "%s", argv[i]);
}
benchmark_cmd[ben_count] = NULL;
} else {
/* If no benchmark is given by "-b" argument, use fill_buf. */
for (i = 0; i < 6; i++)
benchmark_cmd[i] = benchmark_cmd_area[i];
strcpy(benchmark_cmd[0], "fill_buf");
sprintf(benchmark_cmd[1], "%d", span);
strcpy(benchmark_cmd[2], "1");
strcpy(benchmark_cmd[3], "1");
strcpy(benchmark_cmd[4], "0");
strcpy(benchmark_cmd[5], "");
benchmark_cmd[6] = NULL;
}
sprintf(bw_report, "reads");
sprintf(bm_type, "fill_buf");
check_resctrlfs_support();
filter_dmesg();
if (!is_amd && mbm_test) {
printf("# Starting MBM BW change ...\n");
if (!has_ben)
sprintf(benchmark_cmd[5], "%s", "mba");
res = mbm_bw_change(span, cpu_no, bw_report, benchmark_cmd);
printf("%sok MBM: bw change\n", res ? "not " : "");
mbm_test_cleanup();
tests_run++;
}
if (!is_amd && mba_test) {
printf("# Starting MBA Schemata change ...\n");
if (!has_ben)
sprintf(benchmark_cmd[1], "%d", span);
res = mba_schemata_change(cpu_no, bw_report, benchmark_cmd);
printf("%sok MBA: schemata change\n", res ? "not " : "");
mba_test_cleanup();
tests_run++;
}
if (cqm_test) {
printf("# Starting CQM test ...\n");
if (!has_ben)
sprintf(benchmark_cmd[5], "%s", "cqm");
res = cqm_resctrl_val(cpu_no, no_of_bits, benchmark_cmd);
printf("%sok CQM: test\n", res ? "not " : "");
cqm_test_cleanup();
tests_run++;
}
if (cat_test) {
printf("# Starting CAT test ...\n");
res = cat_perf_miss_val(cpu_no, no_of_bits, "L3");
printf("%sok CAT: test\n", res ? "not " : "");
tests_run++;
cat_test_cleanup();
}
printf("1..%d\n", tests_run);
return 0;
}