linux-kernel - [PATCH v5 12/13] selftests/resctrl: Use cache index3 id for AMD schemata masks

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Date:   Fri, 18 Jan 2019 18:27:16 +0000
From:   "Moger, Babu" <Babu.Moger@....com>
To:     "fenghua.yu@...el.com" <fenghua.yu@...el.com>,
        "tglx@...utronix.de" <tglx@...utronix.de>,
        "mingo@...hat.com" <mingo@...hat.com>,
        "hpa@...or.com" <hpa@...or.com>,
        "tony.luck@...el.com" <tony.luck@...el.com>,
        "peterz@...radead.org" <peterz@...radead.org>,
        "reinette.chatre@...el.com" <reinette.chatre@...el.com>,
        "Moger, Babu" <Babu.Moger@....com>,
        "james.morse@....com" <james.morse@....com>,
        "xiaochen.shen@...el.com" <xiaochen.shen@...el.com>,
        "ravi.v.shankar@...el.com" <ravi.v.shankar@...el.com>,
        "sai.praneeth.prakhya@...el.com" <sai.praneeth.prakhya@...el.com>,
        "arshiya.hayatkhan.pathan@...el.com" 
        <arshiya.hayatkhan.pathan@...el.com>
CC:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-kselftest@...r.kernel.org" <linux-kselftest@...r.kernel.org>
Subject: [PATCH v5 12/13] selftests/resctrl: Use cache index3 id for AMD
 schemata masks

AMD uses the cache l3 boundary for schemata masks. Update it accordigly.

Signed-off-by: Babu Moger <babu.moger@....com>
---
 tools/testing/selftests/resctrl/resctrlfs.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/tools/testing/selftests/resctrl/resctrlfs.c b/tools/testing/selftests/resctrl/resctrlfs.c
index 146a10e..15cda1b 100644
--- a/tools/testing/selftests/resctrl/resctrlfs.c
+++ b/tools/testing/selftests/resctrl/resctrlfs.c
@@ -103,8 +103,13 @@ int get_resource_id(int cpu_no, int *resource_id)
 	char phys_pkg_path[1024];
 	FILE *fp;
 
-	sprintf(phys_pkg_path, "%s%d/topology/physical_package_id",
-		PHYS_ID_PATH, cpu_no);
+	if (authentic_amd)
+		sprintf(phys_pkg_path, "%s%d/cache/index3/id",
+                        PHYS_ID_PATH, cpu_no);
+	else
+		sprintf(phys_pkg_path, "%s%d/topology/physical_package_id",
+			PHYS_ID_PATH, cpu_no);
+
 	fp = fopen(phys_pkg_path, "r");
 	if (!fp) {
 		perror("Failed to open physical_package_id");
-- 
1.8.3.1