[Intel-gfx] freedesktop bug id: 100548, bisected to sched/clock commit

[Jani Nikula]

On Wed, 12 Apr 2017, Peter Zijlstra <peterz at infradead.org> wrote:
> On Wed, Apr 12, 2017 at 12:04:00PM +0000, Lofstedt, Marta wrote:
>> Hi,
>> 
>> We have this "old" Lenovo Cantiga laptop(Intel Core 2 Duo L9400), hocked up to our i915 pre-merge CI system, that has started to give unstable results after commit:
>> 
>> commit 7b09cc5a9debc86c903c2eff8f8a1fdef773c649
>> Author: Pavel Tatashin <pasha.tatashin at oracle.com>
>> Date:   Wed Mar 22 16:24:17 2017 -0400
>> 
>>     sched/clock: Fix broken stable to unstable transfer
>> 
>> The issue is describe more in detail here:
>> https://bugs.freedesktop.org/show_bug.cgi?id=100548
>
> I don't click links.

Frankly, I find that more than a little offensive response to a
regression report.

BR,
Jani.

>
>> We have reverted above patch and then issue is no longer reproducible.
>> Also, note that this issue has not been reproduced on any of our other machines,
>> https://intel-gfx-ci.01.org/CI/
>> 
>> So, why is this only affecting the Core 2 Duo?
>
> Core2 doesn't have a usable TSC and would revert to the slow path. I'll
> have another look at that patch.
>
> _______________________________________________
> Intel-gfx mailing list
> Intel-gfx at lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/intel-gfx

-- 
Jani Nikula, Intel Open Source Technology Center