1 // SPDX-License-Identifier: GPL-2.0
2 #include <test_progs.h>
4 void test_stacktrace_map_raw_tp(void)
6 const char *prog_name = "tracepoint/sched/sched_switch";
7 int control_map_fd, stackid_hmap_fd, stackmap_fd;
8 const char *file = "./test_stacktrace_map.o";
9 __u32 key, val, duration = 0;
11 struct bpf_program *prog;
12 struct bpf_object *obj;
13 struct bpf_link *link = NULL;
15 err = bpf_prog_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))
19 prog = bpf_object__find_program_by_title(obj, prog_name);
20 if (CHECK(!prog, "find_prog", "prog '%s' not found\n", prog_name))
23 link = bpf_program__attach_raw_tracepoint(prog, "sched_switch");
24 if (CHECK(IS_ERR(link), "attach_raw_tp", "err %ld\n", PTR_ERR(link)))
28 control_map_fd = bpf_find_map(__func__, obj, "control_map");
29 if (control_map_fd < 0)
32 stackid_hmap_fd = bpf_find_map(__func__, obj, "stackid_hmap");
33 if (stackid_hmap_fd < 0)
36 stackmap_fd = bpf_find_map(__func__, obj, "stackmap");
40 /* give some time for bpf program run */
43 /* disable stack trace collection */
46 bpf_map_update_elem(control_map_fd, &key, &val, 0);
48 /* for every element in stackid_hmap, we can find a corresponding one
49 * in stackmap, and vise versa.
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))
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))
61 goto close_prog_noerr;
65 if (!IS_ERR_OR_NULL(link))
66 bpf_link__destroy(link);
67 bpf_object__close(obj);