1 // SPDX-License-Identifier: GPL-2.0 2 #include <test_progs.h> 3 4 void 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 61 close_prog: 62 bpf_link__destroy(link); 63 bpf_object__close(obj); 64 } 65