Commit f1c3656c authored by Hangbin Liu's avatar Hangbin Liu Committed by Daniel Borkmann

selftests/bpf: Skip perf hw events test if the setup disabled it

The same with commit 4e59afbb ("selftests/bpf: skip nmi test when perf
hw events are disabled"), it would make more sense to skip the
test_stacktrace_build_id_nmi test if the setup (e.g. virtual machines) has
disabled hardware perf events.

Fixes: 13790d1c ("bpf: add selftest for stackmap with build_id in NMI context")
Signed-off-by: default avatarHangbin Liu <liuhangbin@gmail.com>
Signed-off-by: default avatarDaniel Borkmann <daniel@iogearbox.net>
Acked-by: default avatarJohn Fastabend <john.fastabend@gmail.com>
Link: https://lore.kernel.org/bpf/20200117100656.10359-1-liuhangbin@gmail.com
parent 396b83fa
...@@ -49,8 +49,12 @@ void test_stacktrace_build_id_nmi(void) ...@@ -49,8 +49,12 @@ void test_stacktrace_build_id_nmi(void)
pmu_fd = syscall(__NR_perf_event_open, &attr, -1 /* pid */, pmu_fd = syscall(__NR_perf_event_open, &attr, -1 /* pid */,
0 /* cpu 0 */, -1 /* group id */, 0 /* cpu 0 */, -1 /* group id */,
0 /* flags */); 0 /* flags */);
if (CHECK(pmu_fd < 0, "perf_event_open", if (pmu_fd < 0 && errno == ENOENT) {
"err %d errno %d. Does the test host support PERF_COUNT_HW_CPU_CYCLES?\n", printf("%s:SKIP:no PERF_COUNT_HW_CPU_CYCLES\n", __func__);
test__skip();
goto cleanup;
}
if (CHECK(pmu_fd < 0, "perf_event_open", "err %d errno %d\n",
pmu_fd, errno)) pmu_fd, errno))
goto cleanup; goto cleanup;
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment