1 files changed, 38 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/prog_tests/core_retro.c b/tools/testing/selftests/bpf/prog_tests/core_retro.c
new file mode 100644
index 000000000000..4a2c256c8db6
--- /dev/null
+++ b/tools/testing/selftests/bpf/prog_tests/core_retro.c
@@ -0,0 +1,38 @@
+// SPDX-License-Identifier: GPL-2.0
+// Copyright (c) 2020 Facebook
+#define _GNU_SOURCE
+#include <test_progs.h>
+#include "test_core_retro.skel.h"
+
+void test_core_retro(void)
+{
+	int err, zero = 0, res, my_pid = getpid();
+	struct test_core_retro *skel;
+
+	/* load program */
+	skel = test_core_retro__open_and_load();
+	if (!ASSERT_OK_PTR(skel, "skel_load"))
+		goto out_close;
+
+	err = bpf_map__update_elem(skel->maps.exp_tgid_map, &zero, sizeof(zero),
+				   &my_pid, sizeof(my_pid), 0);
+	if (!ASSERT_OK(err, "map_update"))
+		goto out_close;
+
+	/* attach probe */
+	err = test_core_retro__attach(skel);
+	if (!ASSERT_OK(err, "attach_kprobe"))
+		goto out_close;
+
+	/* trigger */
+	usleep(1);
+
+	err = bpf_map__lookup_elem(skel->maps.results, &zero, sizeof(zero), &res, sizeof(res), 0);
+	if (!ASSERT_OK(err, "map_lookup"))
+		goto out_close;
+
+	ASSERT_EQ(res, my_pid, "pid_check");
+
+out_close:
+	test_core_retro__destroy(skel);
+}