1// SPDX-License-Identifier: GPL-2.0
2#include <test_progs.h>
3
4void test_stacktrace_map_raw_tp(void)
5{
6	const char *prog_name = "oncpu";
7	int control_map_fd, stackid_hmap_fd, stackmap_fd;
8	const char *file = "./test_stacktrace_map.bpf.o";
9	__u32 key, val, duration = 0;
10	int err, prog_fd;
11	struct bpf_program *prog;
12	struct bpf_object *obj;
13	struct bpf_link *link = NULL;
14
15	err = bpf_prog_test_load(file, BPF_PROG_TYPE_RAW_TRACEPOINT, &obj, &prog_fd);
16	if (CHECK(err, "prog_load raw tp", "err %d errno %d\n", err, errno))
17		return;
18
19	prog = bpf_object__find_program_by_name(obj, prog_name);
20	if (CHECK(!prog, "find_prog", "prog '%s' not found\n", prog_name))
21		goto close_prog;
22
23	link = bpf_program__attach_raw_tracepoint(prog, "sched_switch");
24	if (!ASSERT_OK_PTR(link, "attach_raw_tp"))
25		goto close_prog;
26
27	/* find map fds */
28	control_map_fd = bpf_find_map(__func__, obj, "control_map");
29	if (CHECK_FAIL(control_map_fd < 0))
30		goto close_prog;
31
32	stackid_hmap_fd = bpf_find_map(__func__, obj, "stackid_hmap");
33	if (CHECK_FAIL(stackid_hmap_fd < 0))
34		goto close_prog;
35
36	stackmap_fd = bpf_find_map(__func__, obj, "stackmap");
37	if (CHECK_FAIL(stackmap_fd < 0))
38		goto close_prog;
39
40	/* give some time for bpf program run */
41	sleep(1);
42
43	/* disable stack trace collection */
44	key = 0;
45	val = 1;
46	bpf_map_update_elem(control_map_fd, &key, &val, 0);
47
48	/* for every element in stackid_hmap, we can find a corresponding one
49	 * in stackmap, and vise versa.
50	 */
51	err = compare_map_keys(stackid_hmap_fd, stackmap_fd);
52	if (CHECK(err, "compare_map_keys stackid_hmap vs. stackmap",
53		  "err %d errno %d\n", err, errno))
54		goto close_prog;
55
56	err = compare_map_keys(stackmap_fd, stackid_hmap_fd);
57	if (CHECK(err, "compare_map_keys stackmap vs. stackid_hmap",
58		  "err %d errno %d\n", err, errno))
59		goto close_prog;
60
61close_prog:
62	bpf_link__destroy(link);
63	bpf_object__close(obj);
64}
65