diff mbox series

[RESEND,v9,10/13] selftests/resctrl: Add vendor detection mechanism

Message ID 1579210366-55429-11-git-send-email-fenghua.yu@intel.com (mailing list archive)
State Mainlined
Commit 53f74fbec9f069241aa6f4c4d908229c77ee83e2
Headers show
Series selftests/resctrl: Add resctrl selftest | expand

Commit Message

Fenghua Yu Jan. 16, 2020, 9:32 p.m. UTC 
From: Babu Moger <babu.moger@amd.com>

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: Babu Moger <babu.moger@amd.com>
Co-developed-by: Fenghua Yu <fenghua.yu@intel.com>
Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
---
 tools/testing/selftests/resctrl/resctrl.h     |  1 +
 .../testing/selftests/resctrl/resctrl_tests.c | 24 +++++++++++++++++++
 2 files changed, 25 insertions(+)
diff mbox series

Patch

diff --git a/tools/testing/selftests/resctrl/resctrl.h b/tools/testing/selftests/resctrl/resctrl.h
index 99659639e580..cd2ea1d2cad9 100644
--- a/tools/testing/selftests/resctrl/resctrl.h
+++ b/tools/testing/selftests/resctrl/resctrl.h
@@ -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);
diff --git a/tools/testing/selftests/resctrl/resctrl_tests.c b/tools/testing/selftests/resctrl/resctrl_tests.c
index 7f75b0b01bb5..884e918b1e97 100644
--- a/tools/testing/selftests/resctrl/resctrl_tests.c
+++ b/tools/testing/selftests/resctrl/resctrl_tests.c
@@ -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++) {