Re: [PATCH v5 bpf-next 5/5] selftests/bpf: add get_stackid_cannot_attach

[Alexei Starovoitov]

On Thu, Jul 23, 2020 at 11:06:48AM -0700, Song Liu wrote:
> +     pmu_fd = syscall(__NR_perf_event_open, &attr, -1 /* pid */,
> +                      0 /* cpu 0 */, -1 /* group id */,
> +                      0 /* flags */);
> +     if (pmu_fd < 0 && errno == ENOENT) {
> +             printf("%s:SKIP:cannot open PERF_COUNT_HW_CPU_CYCLES with 
> precise_ip > 0\n",
> +                    __func__);
> +             test__skip();
> +             goto cleanup;
> +     }

That wasn't enough in my test VM.
I've changed it to be: (errno == ENOENT || errno == EOPNOTSUPP)
and applied the set.
Thanks