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author | Ravi Bangoria <ravi.bangoria@linux.ibm.com> | 2021-03-16 18:30:48 +0300 |
---|---|---|
committer | Daniel Borkmann <daniel@iogearbox.net> | 2021-03-17 02:16:59 +0300 |
commit | 56901d483bf14ca729a6c4e06d2b49590b9f1971 (patch) | |
tree | 444d7941d0f2786675e63270beabfd041b3f7541 /tools/testing/selftests | |
parent | ebda107e5f222a086c83ddf6d1ab1da97dd15810 (diff) | |
download | linux-56901d483bf14ca729a6c4e06d2b49590b9f1971.tar.xz |
selftests/bpf: Use nanosleep() syscall instead of sleep() in get_cgroup_id
Glibc's sleep() switched to clock_nanosleep() from nanosleep(), and thus
syscalls:sys_enter_nanosleep tracepoint is not hitting which is causing
testcase failure. Instead of depending on glibc sleep(), call nanosleep()
systemcall directly.
Before:
# ./get_cgroup_id_user
...
main:FAIL:compare_cgroup_id kern cgid 0 user cgid 483
After:
# ./get_cgroup_id_user
...
main:PASS:compare_cgroup_id
Signed-off-by: Ravi Bangoria <ravi.bangoria@linux.ibm.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20210316153048.136447-1-ravi.bangoria@linux.ibm.com
Diffstat (limited to 'tools/testing/selftests')
-rw-r--r-- | tools/testing/selftests/bpf/get_cgroup_id_user.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/tools/testing/selftests/bpf/get_cgroup_id_user.c b/tools/testing/selftests/bpf/get_cgroup_id_user.c index b8d6aef99db4..99628e1a1e58 100644 --- a/tools/testing/selftests/bpf/get_cgroup_id_user.c +++ b/tools/testing/selftests/bpf/get_cgroup_id_user.c @@ -57,6 +57,10 @@ int main(int argc, char **argv) __u32 key = 0, pid; int exit_code = 1; char buf[256]; + const struct timespec req = { + .tv_sec = 1, + .tv_nsec = 0, + }; cgroup_fd = cgroup_setup_and_join(TEST_CGROUP); if (CHECK(cgroup_fd < 0, "cgroup_setup_and_join", "err %d errno %d\n", cgroup_fd, errno)) @@ -115,7 +119,7 @@ int main(int argc, char **argv) goto close_pmu; /* trigger some syscalls */ - sleep(1); + syscall(__NR_nanosleep, &req, NULL); err = bpf_map_lookup_elem(cgidmap_fd, &key, &kcgid); if (CHECK(err, "bpf_map_lookup_elem", "err %d errno %d\n", err, errno)) |