1 files changed, 63 insertions, 0 deletions
diff --git a/tools/testing/selftests/powerpc/pmu/event_code_tests/group_constraint_thresh_sel_test.c b/tools/testing/selftests/powerpc/pmu/event_code_tests/group_constraint_thresh_sel_test.c
new file mode 100644
index 000000000000..50a8cd843ce7
--- /dev/null
+++ b/tools/testing/selftests/powerpc/pmu/event_code_tests/group_constraint_thresh_sel_test.c
@@ -0,0 +1,63 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright 2022, Kajol Jain, IBM Corp.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "../event.h"
+#include "utils.h"
+#include "../sampling_tests/misc.h"
+
+/*
+ * Primary PMU events used here are PM_MRK_INST_CMPL (0x401e0) and
+ * PM_THRESH_MET (0x101ec).
+ * Threshold event selection used is issue to complete
+ * Sampling criteria is Load or Store only sampling
+ */
+#define EventCode_1 0x35340401e0
+#define EventCode_2 0x35540101ec
+#define EventCode_3 0x35340101ec
+
+/*
+ * Testcase for group constraint check of thresh_sel bits which is
+ * used to program thresh select field in Monitor Mode Control Register A
+ * (MMCRA: 45-57).
+ * All events in the group should match thresh sel bits otherwise
+ * event_open for the group will fail.
+ */
+static int group_constraint_thresh_sel(void)
+{
+	struct event event, leader;
+
+	/* Check for platform support for the test */
+	SKIP_IF(platform_check_for_tests());
+
+	/* Init the events for the group contraint thresh select test */
+	event_init(&leader, EventCode_1);
+	FAIL_IF(event_open(&leader));
+
+	event_init(&event, EventCode_2);
+
+	/* Expected to fail as sibling and leader event request different thresh_sel bits */
+	FAIL_IF(!event_open_with_group(&event, leader.fd));
+
+	event_close(&event);
+
+	/* Init the event for the group contraint thresh select test */
+	event_init(&event, EventCode_3);
+
+	 /* Expected to succeed as sibling and leader event request same thresh_sel bits */
+	FAIL_IF(event_open_with_group(&event, leader.fd));
+
+	event_close(&leader);
+	event_close(&event);
+
+	return 0;
+}
+
+int main(void)
+{
+	return test_harness(group_constraint_thresh_sel, "group_constraint_thresh_sel");
+}