Contributors: 8
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Stanislav Fomichev |
271 |
72.46% |
3 |
18.75% |
| Alexei Starovoitov |
38 |
10.16% |
3 |
18.75% |
| Andrii Nakryiko |
35 |
9.36% |
3 |
18.75% |
| Yonghong Song |
21 |
5.61% |
3 |
18.75% |
| Song Liu |
5 |
1.34% |
1 |
6.25% |
| Kui-Feng Lee |
2 |
0.53% |
1 |
6.25% |
| Lorenz Bauer |
1 |
0.27% |
1 |
6.25% |
| Daniel Müller |
1 |
0.27% |
1 |
6.25% |
| Total |
374 |
|
16 |
|
// SPDX-License-Identifier: GPL-2.0
#include <test_progs.h>
void test_stacktrace_map(void)
{
int control_map_fd, stackid_hmap_fd, stackmap_fd, stack_amap_fd;
const char *prog_name = "oncpu";
int err, prog_fd, stack_trace_len;
const char *file = "./test_stacktrace_map.bpf.o";
__u32 key, val, duration = 0;
struct bpf_program *prog;
struct bpf_object *obj;
struct bpf_link *link;
err = bpf_prog_test_load(file, BPF_PROG_TYPE_TRACEPOINT, &obj, &prog_fd);
if (CHECK(err, "prog_load", "err %d errno %d\n", err, errno))
return;
prog = bpf_object__find_program_by_name(obj, prog_name);
if (CHECK(!prog, "find_prog", "prog '%s' not found\n", prog_name))
goto close_prog;
link = bpf_program__attach_tracepoint(prog, "sched", "sched_switch");
if (!ASSERT_OK_PTR(link, "attach_tp"))
goto close_prog;
/* find map fds */
control_map_fd = bpf_find_map(__func__, obj, "control_map");
if (CHECK_FAIL(control_map_fd < 0))
goto disable_pmu;
stackid_hmap_fd = bpf_find_map(__func__, obj, "stackid_hmap");
if (CHECK_FAIL(stackid_hmap_fd < 0))
goto disable_pmu;
stackmap_fd = bpf_find_map(__func__, obj, "stackmap");
if (CHECK_FAIL(stackmap_fd < 0))
goto disable_pmu;
stack_amap_fd = bpf_find_map(__func__, obj, "stack_amap");
if (CHECK_FAIL(stack_amap_fd < 0))
goto disable_pmu;
/* give some time for bpf program run */
sleep(1);
/* disable stack trace collection */
key = 0;
val = 1;
bpf_map_update_elem(control_map_fd, &key, &val, 0);
/* for every element in stackid_hmap, we can find a corresponding one
* in stackmap, and vise versa.
*/
err = compare_map_keys(stackid_hmap_fd, stackmap_fd);
if (CHECK(err, "compare_map_keys stackid_hmap vs. stackmap",
"err %d errno %d\n", err, errno))
goto disable_pmu;
err = compare_map_keys(stackmap_fd, stackid_hmap_fd);
if (CHECK(err, "compare_map_keys stackmap vs. stackid_hmap",
"err %d errno %d\n", err, errno))
goto disable_pmu;
stack_trace_len = PERF_MAX_STACK_DEPTH * sizeof(__u64);
err = compare_stack_ips(stackmap_fd, stack_amap_fd, stack_trace_len);
if (CHECK(err, "compare_stack_ips stackmap vs. stack_amap",
"err %d errno %d\n", err, errno))
goto disable_pmu;
disable_pmu:
bpf_link__destroy(link);
close_prog:
bpf_object__close(obj);
}