[igt-dev] ✗ Fi.CI.IGT: failure for tests/perf_pmu: Avoid off-lining all CPUs
Tvrtko Ursulin
tvrtko.ursulin at linux.intel.com
Mon Feb 19 17:53:06 UTC 2018
On 19/02/2018 16:07, Chris Wilson wrote:
> Quoting Patchwork (2018-02-19 15:55:19)
>> Test perf_pmu:
>> Subgroup cpu-hotplug:
>> incomplete -> SKIP (shard-apl) fdo#104965
>> Subgroup other-read-1:
>> pass -> FAIL (shard-apl)
>
> I guess that's the expected fallout from deciding to skip after trying
> to offline a cpu.
Kind of expected because I am not quite sure why it behaves differently
from the existing code which has igt_assert on the write. Maybe I am
particularly blind today.
> I also guess that makes it a no-go (without some tweaking) if we cause
> random fallout in subsequent tests, i.e. unpredictable flip-flops.
Yep agreed 100%.
Sounds like a case for igt_fail2 = please reboot me, or igt_wedge_machine.
A bit lighter weight, but with weaker coverage, maybe adding
i915.debug_pmu_cpu=N modparam (present only when I915_DEBUG is set), and
living with not testing the cpu0 offline paths?
Regards,
Tvrtko
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