Re: [Intel-gfx] [PATCH 03/18] dma-fence: basic lockdep annotations

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Hi,

On Thu, 11 Jun 2020 at 09:44, Dave Airlie <airlied@xxxxxxxxx> wrote:
> On Thu, 11 Jun 2020 at 18:01, Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> wrote:
> > Introducing a global lockmap that cannot capture the rules correctly,
>
> Can you document the rules all drivers should be following then,
> because from here it looks to get refactored every version of i915,
> and it would be nice if we could all aim for the same set of things
> roughly. We've already had enough problems with amdgpu vs i915 vs
> everyone else with fences, if this stops that in the future then I'd
> rather we have that than just some unwritten rules per driver and
> untestable.

As someone who has sunk a bunch of work into explicit-fencing
awareness in my compositor so I can never be blocked, I'd be
disappointed if the infrastructure was ultimately pointless because
the documented fencing rules were \_o_/ or thereabouts. Lockdep
definitely isn't my area of expertise so I can't comment on the patch
per se, but having something to ensure we don't hit deadlocks sure
seems a lot better than nothing.

Cheers,
Daniel
_______________________________________________
dri-devel mailing list
dri-devel@xxxxxxxxxxxxxxxxxxxxx
https://lists.freedesktop.org/mailman/listinfo/dri-devel



[Index of Archives]     [Linux DRI Users]     [Linux Intel Graphics]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]     [XFree86]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Linux Kernel]     [Linux SCSI]     [XFree86]
  Powered by Linux