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selftests/resctrl: Add Cache QoS Monitoring (CQM) selftest

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Cache QoS Monitoring (CQM) selftest starts stressful cache benchmark
with specified size of memory to access the cache. Last Level cache
occupancy reported by CQM should be close to the size of the memory.

Co-developed-by: Sai Praneeth Prakhya <sai.praneeth.prakhya@intel.com>
Signed-off-by: Sai Praneeth Prakhya <sai.praneeth.prakhya@intel.com>
Co-developed-by: Babu Moger <babu.moger@amd.com>
Signed-off-by: Babu Moger <babu.moger@amd.com>
Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
This commit is contained in:
Fenghua Yu
2020-01-16 13:32:41 -08:00
committed by Shuah Khan
parent 01fee6b4d1
commit 78941183d1
6 changed files with 558 additions and 20 deletions
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31
tools/testing/selftests/resctrl/resctrl_tests.c
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@@ -15,11 +15,13 @@
static void cmd_help(void)
{
printf("usage: resctrl_tests [-h] [-b \"benchmark_cmd [options]\"] [-t test list]\n");
printf("\t-b benchmark_cmd [options]: run specified benchmark\n");
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\n");
printf("e.g. -t mbm, mba, cqm\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");
}
@@ -27,15 +29,16 @@ void tests_cleanup(void)
{
mbm_test_cleanup();
mba_test_cleanup();
cqm_test_cleanup();
}
int main(int argc, char **argv)
{
int res, c, cpu_no = 1, span = 250, argc_new = argc, i, ben_ind;
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];
bool has_ben = false, mbm_test = true, mba_test = true;
int ben_count;
int ben_ind, ben_count;
for (i = 0; i < argc; i++) {
if (strcmp(argv[i], "-b") == 0) {
@@ -56,11 +59,14 @@ int main(int argc, char **argv)
mbm_test = false;
mba_test = false;
cqm_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 {
printf("invalid argument\n");
@@ -72,6 +78,9 @@ int main(int argc, char **argv)
case 'p':
cpu_no = atoi(optarg);
break;
case 'n':
no_of_bits = atoi(optarg);
break;
case 'h':
cmd_help();
@@ -140,6 +149,16 @@ int main(int argc, char **argv)
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++;
}
printf("1..%d\n", tests_run);
return 0;