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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 = "./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 vice 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}