1 files changed, 56 insertions, 0 deletions
diff --git a/tools/testing/selftests/powerpc/pmu/event_code_tests/group_constraint_repeat_test.c b/tools/testing/selftests/powerpc/pmu/event_code_tests/group_constraint_repeat_test.c
new file mode 100644
index 000000000000..371cd05bb3ed
--- /dev/null
+++ b/tools/testing/selftests/powerpc/pmu/event_code_tests/group_constraint_repeat_test.c
@@ -0,0 +1,56 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright 2022, Athira Rajeev, IBM Corp.
+ */
+
+#include <stdio.h>
+#include "../event.h"
+#include "../sampling_tests/misc.h"
+
+/* The processor's L1 data cache was reloaded */
+#define EventCode1 0x21C040
+#define EventCode2 0x22C040
+
+/*
+ * Testcase for group constraint check
+ * when using events with same PMC.
+ * Multiple events in a group shouldn't
+ * ask for same PMC. If so it should fail.
+ */
+
+static int group_constraint_repeat(void)
+{
+	struct event event, leader;
+
+	/* Check for platform support for the test */
+	SKIP_IF(platform_check_for_tests());
+
+	/*
+	 * Two events in a group using same PMC
+	 * should fail to get scheduled. Usei same PMC2
+	 * for leader and sibling event which is expected
+	 * to fail.
+	 */
+	event_init(&leader, EventCode1);
+	FAIL_IF(event_open(&leader));
+
+	event_init(&event, EventCode1);
+
+	/* Expected to fail since sibling event is requesting same PMC as leader */
+	FAIL_IF(!event_open_with_group(&event, leader.fd));
+
+	event_init(&event, EventCode2);
+
+	/* Expected to pass since sibling event is requesting different PMC */
+	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_repeat, "group_constraint_repeat");
+}