Re: Suspend-resume failure on Intel Eagle Lake Core2Duo

[Tomi Sarvela]

On 31/07/17 17:04, Thomas Gleixner wrote:
> On Mon, 31 Jul 2017, Tomi Sarvela wrote:
> > On 31/07/17 11:29, Thomas Gleixner wrote:
> > > On Mon, 31 Jul 2017, Tomi Sarvela wrote:
> > > > On 31/07/17 10:45, Thomas Gleixner wrote:
> > > > > On Mon, 31 Jul 2017, Tomi Sarvela wrote:
> > > > > > On 28/07/17 19:26, Thomas Gleixner wrote:
> > > > > > > Did you change anything else compared to the tests before ?
> > > > > >
> > > > > > I did check that the problem persisted in linus-HEAD before testing
> > > > > > your
> > > > > > patch. The testing was done in order (reading from console logs I
> > > > > > happen
> > > > > > to
> > > > > > still have in one window):
> > > > >
> > > > > What I still do not understand is why this would affect the suspend path
> > > > > in
> > > > > any way.
> > > > >
> > > > > Can you remove the previous patch and apply the one below. If it
> > > > > resumes,
> > > > > please provide the data from the trace buffer again.
> > > >
> > > > No such luck. ELK hangs in the suspend-test with earlier patch removed,
> > > > this
> > > > added. Checked again that the power-led is on, no serial output.
> > > >
> > > > Tree not pulled: still testing against the previous head -rc2, not current
> > > > 4.13.0-rc3
> > >
> > > Shouldn't make a difference. Can you please try the following:
> > >
> > > Offline CPU1 before invoking suspend.
> > >
> > > # echo 0 >/sys/devices/system/cpus/cpu1/offline
> >
> > Tested with your latest patch (irq_trace_state):
> >
> > echo 0 >/sys/devices/system/cpu/cpu1/online
> >
> > ./scripts/run-tests.sh -vt igt@gem_exec_suspend@basic-s3 -x devices
>
> So this "igt@gem_exec_suspend@basic-s3" thingy is that executing anything
> extra aside of 'echo mem > /sys/power/state'?

It's setting wakeup with rtcwake to +15 seconds, then suspending.

Complete information glanceable from sources:

https://cgit.freedesktop.org/xorg/app/intel-gpu-tools/tree/tests/gem_exec_suspend.c 
->

https://cgit.freedesktop.org/xorg/app/intel-gpu-tools/tree/lib/igt_aux.c:void 
igt_system_suspend_autoresume

Tomi
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