selftests/bpf: test_progs: remove global fail/success counts
[muen/linux.git] / tools / testing / selftests / bpf / prog_tests / stacktrace_map.c
1 // SPDX-License-Identifier: GPL-2.0
2 #include <test_progs.h>
3
4 void test_stacktrace_map(void)
5 {
6         int control_map_fd, stackid_hmap_fd, stackmap_fd, stack_amap_fd;
7         const char *prog_name = "tracepoint/sched/sched_switch";
8         int err, prog_fd, stack_trace_len;
9         const char *file = "./test_stacktrace_map.o";
10         __u32 key, val, duration = 0;
11         struct bpf_program *prog;
12         struct bpf_object *obj;
13         struct bpf_link *link;
14
15         err = bpf_prog_load(file, BPF_PROG_TYPE_TRACEPOINT, &obj, &prog_fd);
16         if (CHECK(err, "prog_load", "err %d errno %d\n", err, errno))
17                 return;
18
19         prog = bpf_object__find_program_by_title(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_tracepoint(prog, "sched", "sched_switch");
24         if (CHECK(IS_ERR(link), "attach_tp", "err %ld\n", PTR_ERR(link)))
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 disable_pmu;
31
32         stackid_hmap_fd = bpf_find_map(__func__, obj, "stackid_hmap");
33         if (CHECK_FAIL(stackid_hmap_fd < 0))
34                 goto disable_pmu;
35
36         stackmap_fd = bpf_find_map(__func__, obj, "stackmap");
37         if (CHECK_FAIL(stackmap_fd < 0))
38                 goto disable_pmu;
39
40         stack_amap_fd = bpf_find_map(__func__, obj, "stack_amap");
41         if (CHECK_FAIL(stack_amap_fd < 0))
42                 goto disable_pmu;
43
44         /* give some time for bpf program run */
45         sleep(1);
46
47         /* disable stack trace collection */
48         key = 0;
49         val = 1;
50         bpf_map_update_elem(control_map_fd, &key, &val, 0);
51
52         /* for every element in stackid_hmap, we can find a corresponding one
53          * in stackmap, and vise versa.
54          */
55         err = compare_map_keys(stackid_hmap_fd, stackmap_fd);
56         if (CHECK(err, "compare_map_keys stackid_hmap vs. stackmap",
57                   "err %d errno %d\n", err, errno))
58                 goto disable_pmu;
59
60         err = compare_map_keys(stackmap_fd, stackid_hmap_fd);
61         if (CHECK(err, "compare_map_keys stackmap vs. stackid_hmap",
62                   "err %d errno %d\n", err, errno))
63                 goto disable_pmu;
64
65         stack_trace_len = PERF_MAX_STACK_DEPTH * sizeof(__u64);
66         err = compare_stack_ips(stackmap_fd, stack_amap_fd, stack_trace_len);
67         if (CHECK(err, "compare_stack_ips stackmap vs. stack_amap",
68                   "err %d errno %d\n", err, errno))
69                 goto disable_pmu;
70
71 disable_pmu:
72         bpf_link__destroy(link);
73 close_prog:
74         bpf_object__close(obj);
75 }