On Thu, Jul 09, 2020 at 08:29:21AM +0100, Daniel Stone wrote:
> Hi,
> Jumping in after a couple of weeks where I've paged most everything
> out of my brain ...
>
> On Fri, 19 Jun 2020 at 10:43, Daniel Vetter wrote:
> > On Fri, Jun 19, 2020 at 10:13:35AM +0100, Chris Wilson wrote:
> > > > The
Hi,
Jumping in after a couple of weeks where I've paged most everything
out of my brain ...
On Fri, 19 Jun 2020 at 10:43, Daniel Vetter wrote:
> On Fri, Jun 19, 2020 at 10:13:35AM +0100, Chris Wilson wrote:
> > > The proposed patches might very well encode the wrong contract, that's
> > > all up
On Fri, Jun 19, 2020 at 3:12 PM Chris Wilson wrote:
>
> Quoting Daniel Vetter (2020-06-19 10:43:09)
> > On Fri, Jun 19, 2020 at 10:13:35AM +0100, Chris Wilson wrote:
> > > Quoting Daniel Vetter (2020-06-19 09:51:59)
> > > > On Fri, Jun 19, 2020 at 10:25 AM Chris Wilson
> > > > wrote:
> > > > >
Quoting Daniel Vetter (2020-06-19 10:43:09)
> On Fri, Jun 19, 2020 at 10:13:35AM +0100, Chris Wilson wrote:
> > Quoting Daniel Vetter (2020-06-19 09:51:59)
> > > On Fri, Jun 19, 2020 at 10:25 AM Chris Wilson
> > > wrote:
> > > > Forcing a generic primitive to always be part of the same global
On Fri, Jun 19, 2020 at 10:13:35AM +0100, Chris Wilson wrote:
> Quoting Daniel Vetter (2020-06-19 09:51:59)
> > On Fri, Jun 19, 2020 at 10:25 AM Chris Wilson
> > wrote:
> > > Forcing a generic primitive to always be part of the same global map is
> > > horrible.
> >
> > And no concrete example
Quoting Daniel Vetter (2020-06-19 09:51:59)
> On Fri, Jun 19, 2020 at 10:25 AM Chris Wilson
> wrote:
> > Forcing a generic primitive to always be part of the same global map is
> > horrible.
>
> And no concrete example or reason for why that's not possible.
> Because frankly it's not horrible,
On Fri, Jun 19, 2020 at 10:25 AM Chris Wilson wrote:
>
> Quoting Daniel Stone (2020-06-11 10:01:46)
> > Hi,
> >
> > On Thu, 11 Jun 2020 at 09:44, Dave Airlie wrote:
> > > On Thu, 11 Jun 2020 at 18:01, Chris Wilson
> > > wrote:
> > > > Introducing a global lockmap that cannot capture the rules
Quoting Daniel Stone (2020-06-11 10:01:46)
> Hi,
>
> On Thu, 11 Jun 2020 at 09:44, Dave Airlie wrote:
> > On Thu, 11 Jun 2020 at 18:01, Chris Wilson wrote:
> > > Introducing a global lockmap that cannot capture the rules correctly,
> >
> > Can you document the rules all drivers should be
On Thu, Jun 11, 2020 at 4:29 PM Tvrtko Ursulin
wrote:
>
>
> On 11/06/2020 12:29, Daniel Vetter wrote:
> > On Thu, Jun 11, 2020 at 12:36 PM Tvrtko Ursulin
> > wrote:
> >> On 10/06/2020 16:17, Daniel Vetter wrote:
> >>> On Wed, Jun 10, 2020 at 4:22 PM Tvrtko Ursulin
> >>> wrote:
>
>
>
On 11/06/2020 12:29, Daniel Vetter wrote:
> On Thu, Jun 11, 2020 at 12:36 PM Tvrtko Ursulin
> wrote:
>> On 10/06/2020 16:17, Daniel Vetter wrote:
>>> On Wed, Jun 10, 2020 at 4:22 PM Tvrtko Ursulin
>>> wrote:
On 04/06/2020 09:12, Daniel Vetter wrote:
> Design is similar to the
On Thu, Jun 11, 2020 at 12:36 PM Tvrtko Ursulin
wrote:
>
>
> On 10/06/2020 16:17, Daniel Vetter wrote:
> > On Wed, Jun 10, 2020 at 4:22 PM Tvrtko Ursulin
> > wrote:
> >>
> >>
> >> On 04/06/2020 09:12, Daniel Vetter wrote:
> >>> Design is similar to the lockdep annotations for workers, but with
>
On 10/06/2020 16:17, Daniel Vetter wrote:
> On Wed, Jun 10, 2020 at 4:22 PM Tvrtko Ursulin
> wrote:
>>
>>
>> On 04/06/2020 09:12, Daniel Vetter wrote:
>>> Design is similar to the lockdep annotations for workers, but with
>>> some twists:
>>>
>>> - We use a read-lock for the
Hi,
On Thu, 11 Jun 2020 at 09:44, Dave Airlie wrote:
> On Thu, 11 Jun 2020 at 18:01, Chris Wilson 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
On Thu, 11 Jun 2020 at 18:01, Chris Wilson wrote:
>
> Quoting Daniel Vetter (2020-06-04 09:12:09)
> > Design is similar to the lockdep annotations for workers, but with
> > some twists:
> >
> > - We use a read-lock for the execution/worker/completion side, so that
> > this explicit annotation
Quoting Daniel Vetter (2020-06-04 09:12:09)
> Design is similar to the lockdep annotations for workers, but with
> some twists:
>
> - We use a read-lock for the execution/worker/completion side, so that
> this explicit annotation can be more liberally sprinkled around.
> With read locks
On Wed, Jun 10, 2020 at 4:22 PM Tvrtko Ursulin
wrote:
>
>
> On 04/06/2020 09:12, Daniel Vetter wrote:
> > Design is similar to the lockdep annotations for workers, but with
> > some twists:
> >
> > - We use a read-lock for the execution/worker/completion side, so that
> >this explicit
On 04/06/2020 09:12, Daniel Vetter wrote:
Design is similar to the lockdep annotations for workers, but with
some twists:
- We use a read-lock for the execution/worker/completion side, so that
this explicit annotation can be more liberally sprinkled around.
With read locks lockdep isn't
On Thu, Jun 4, 2020 at 11:27 AM Chris Wilson wrote:
>
> Quoting Daniel Vetter (2020-06-04 10:21:46)
> > On Thu, Jun 4, 2020 at 10:57 AM Thomas Hellström (Intel)
> > wrote:
> > >
> > >
> > > On 6/4/20 10:12 AM, Daniel Vetter wrote:
> > > ...
> > > > Thread A:
> > > >
> > > > mutex_lock(A);
Quoting Daniel Vetter (2020-06-04 10:21:46)
> On Thu, Jun 4, 2020 at 10:57 AM Thomas Hellström (Intel)
> wrote:
> >
> >
> > On 6/4/20 10:12 AM, Daniel Vetter wrote:
> > ...
> > > Thread A:
> > >
> > > mutex_lock(A);
> > > mutex_unlock(A);
> > >
> > > dma_fence_signal();
> > >
>
On Thu, Jun 4, 2020 at 10:57 AM Thomas Hellström (Intel)
wrote:
>
>
> On 6/4/20 10:12 AM, Daniel Vetter wrote:
> ...
> > Thread A:
> >
> > mutex_lock(A);
> > mutex_unlock(A);
> >
> > dma_fence_signal();
> >
> > Thread B:
> >
> > mutex_lock(A);
> > dma_fence_wait();
>
On 6/4/20 10:12 AM, Daniel Vetter wrote:
...
Thread A:
mutex_lock(A);
mutex_unlock(A);
dma_fence_signal();
Thread B:
mutex_lock(A);
dma_fence_wait();
mutex_unlock(A);
Thread B is blocked on A signalling the fence, but A never gets around
to
Design is similar to the lockdep annotations for workers, but with
some twists:
- We use a read-lock for the execution/worker/completion side, so that
this explicit annotation can be more liberally sprinkled around.
With read locks lockdep isn't going to complain if the read-side
isn't
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