Commit 53f74fbe authored by Babu Moger's avatar Babu Moger Committed by Shuah Khan
Browse files

selftests/resctrl: Add vendor detection mechanism 



RESCTRL feature is supported both on Intel and AMD now. Some features
are implemented differently. Add vendor detection mechanism. Use the vendor
check where there are differences.

Signed-off-by: default avatarBabu Moger <babu.moger@amd.com>
Co-developed-by: default avatarFenghua Yu <fenghua.yu@intel.com>
Signed-off-by: default avatarFenghua Yu <fenghua.yu@intel.com>
Signed-off-by: default avatarShuah Khan <skhan@linuxfoundation.org>
parent 790bf585

tools/testing/selftests/resctrl/resctrl.h

+1 −0
Original line number Diff line number Diff line
@@ -66,6 +66,7 @@ pid_t bm_pid, ppid; 
int tests_run;



char llc_occup_path[1024];

bool is_amd;



bool check_resctrlfs_support(void);

int filter_dmesg(void);

tools/testing/selftests/resctrl/resctrl_tests.c

+24 −0
Original line number Diff line number Diff line
@@ -13,6 +13,27 @@ 
#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");
@@ -107,6 +128,9 @@ int main(int argc, char **argv) 
	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++) {

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