On Wed, Nov 16, 2022 at 12:08:27PM +0200, Jani Nikula wrote:
> On Sun, 06 Nov 2022, Tetsuo Handa <penguin-kernel@xxxxxxxxxxxxxxxxxxx> wrote:
> > Like commit c4f135d643823a86 ("workqueue: Wrap flush_workqueue() using a
> > macro") says, flush_scheduled_work() is dangerous and will be forbidden.
> > We are on the way for removing all flush_scheduled_work() callers from
> > the kernel, and there are only 4 callers remaining as of linux-20221104.
> >
> > drivers/gpu/drm/i915/display/intel_display.c:8997: flush_scheduled_work();
>
> Thanks for the reminder, I've pinged folks to get someone working on
> this. We do schedule quite a bunch of work, so it's not immediately
> obvious (at least to me) what exactly needs flushing.
Here's my earlier cursory analysis of the subject:
https://lore.kernel.org/intel-gfx/Yy3byxFrfAfQL9xK@xxxxxxxxx/
>
> https://gitlab.freedesktop.org/drm/intel/-/issues/7546
>
> > drivers/gpu/drm/i915/gt/selftest_execlists.c:88: flush_scheduled_work();
>
> Removed by commit 7d33fd02dd94 ("drm/i915/selftests: Remove
> flush_scheduled_work() from live_execlists") in drm-next.
>
> BR,
> Jani.
>
> --
> Jani Nikula, Intel Open Source Graphics Center
--
Ville Syrjälä
Intel
