Re: [PATCH v5 bpf-next 5/5] selftests/bpf: add get_stackid_cannot_attach
From: Alexei Starovoitov <hidden>
Date: 2020-07-24 05:32:27
Also in:
bpf, lkml
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