linux-kernel - [PATCH 2/4] selftests/resctrl: Pass sysfs controller name of the vendor

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Date: Thu, 22 Feb 2024 15:35:46 -0600
From: Babu Moger <babu.moger@....com>
To: <fenghua.yu@...el.com>, <reinette.chatre@...el.com>, <shuah@...nel.org>
CC: <linux-kernel@...r.kernel.org>, <linux-kselftest@...r.kernel.org>,
	<ilpo.jarvinen@...ux.intel.com>, <babu.moger@....com>,
	<maciej.wieczor-retman@...el.com>, <peternewman@...gle.com>,
	<eranian@...gle.com>
Subject: [PATCH 2/4] selftests/resctrl: Pass sysfs controller name of the vendor

Detect the vendor and pass the sysfs name for the vendor for searching
the controller information.

Signed-off-by: Babu Moger <babu.moger@....com>
---
 tools/testing/selftests/resctrl/resctrl_val.c | 16 +++++++++++++---
 1 file changed, 13 insertions(+), 3 deletions(-)

diff --git a/tools/testing/selftests/resctrl/resctrl_val.c b/tools/testing/selftests/resctrl/resctrl_val.c
index 52e23a8076d3..792116d3565f 100644
--- a/tools/testing/selftests/resctrl/resctrl_val.c
+++ b/tools/testing/selftests/resctrl/resctrl_val.c
@@ -224,14 +224,24 @@ static int get_number_of_mem_ctrls(void)
 {
 	char imc_dir[512], *temp;
 	unsigned int count = 0;
+	int ret, vendor, size;
 	struct dirent *ep;
-	int ret;
+	char *sysfs_name;
 	DIR *dp;
 
+	vendor = get_vendor();
+	if (vendor == ARCH_INTEL) {
+		sysfs_name = UNCORE_IMC;
+		size = sizeof(UNCORE_IMC);
+	} else {
+		perror("Unsupported Vendor!\n");
+		return -1;
+	}
+
 	dp = opendir(DYN_PMU_PATH);
 	if (dp) {
 		while ((ep = readdir(dp))) {
-			temp = strstr(ep->d_name, UNCORE_IMC);
+			temp = strstr(ep->d_name, sysfs_name);
 			if (!temp)
 				continue;
 
@@ -242,7 +252,7 @@ static int get_number_of_mem_ctrls(void)
 			 * well and hence the last underscore character in
 			 * uncore_imc'_' need not be counted.
 			 */
-			temp = temp + sizeof(UNCORE_IMC);
+			temp = temp + size;
 
 			/*
 			 * Some directories under "DYN_PMU_PATH" could have
-- 
2.34.1