Re: [PATCH v2 0/9] Updated fence patch series

2014-07-08 Thread Daniel Vetter
On Mon, Jul 07, 2014 at 10:30:52AM -0700, Greg KH wrote:
 On Mon, Jul 07, 2014 at 03:23:17PM +0200, Daniel Vetter wrote:
  On Wed, Jul 2, 2014 at 7:37 AM, Greg KH gre...@linuxfoundation.org wrote:
   Android can expose fences to userspace. It's possible to make the new 
   fence
   mechanism expose the same fences to userspace by changing 
   sync_fence_create
   to take a struct fence instead of a struct sync_pt. No other change is 
   needed,
   because only the fence parts of struct sync_pt are used. But because the
   userspace fences are a separate problem and I haven't really looked at 
   it yet
   I feel it should stay in staging, for now.
  
   Ok, that's reasonable.
  
   At first glance, this all looks sane to me, any objection from anyone
   if I merge this through my driver-core tree for 3.17?
  
  Ack from my side fwiw.
 
 Thanks, I'll queue it up later today.

btw should we add you as a (co)maintainer for driver/core/dma-buf since
you seem to want to keep a closer tab on what the insane gfx folks are up
to in there?
-Daniel
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+41 (0) 79 365 57 48 - http://blog.ffwll.ch
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Re: [PATCH v2 0/9] Updated fence patch series

2014-07-08 Thread Greg KH
On Tue, Jul 08, 2014 at 03:44:27PM +0200, Daniel Vetter wrote:
 On Mon, Jul 07, 2014 at 10:30:52AM -0700, Greg KH wrote:
  On Mon, Jul 07, 2014 at 03:23:17PM +0200, Daniel Vetter wrote:
   On Wed, Jul 2, 2014 at 7:37 AM, Greg KH gre...@linuxfoundation.org 
   wrote:
Android can expose fences to userspace. It's possible to make the new 
fence
mechanism expose the same fences to userspace by changing 
sync_fence_create
to take a struct fence instead of a struct sync_pt. No other change is 
needed,
because only the fence parts of struct sync_pt are used. But because 
the
userspace fences are a separate problem and I haven't really looked at 
it yet
I feel it should stay in staging, for now.
   
Ok, that's reasonable.
   
At first glance, this all looks sane to me, any objection from anyone
if I merge this through my driver-core tree for 3.17?
   
   Ack from my side fwiw.
  
  Thanks, I'll queue it up later today.
 
 btw should we add you as a (co)maintainer for driver/core/dma-buf since
 you seem to want to keep a closer tab on what the insane gfx folks are up
 to in there?

Sure, why not, what's one more maintainership...

Oh, does that mean you want me to be the one collecting the patches and
forwarding them on to Linus?  If so, that's fine, I can easily do that
as well due to my infrastructure being set up for it.

thanks,

greg k-h
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Re: [PATCH v2 0/9] Updated fence patch series

2014-07-08 Thread Sumit Semwal
On 8 July 2014 20:09, Greg KH gre...@linuxfoundation.org wrote:
 On Tue, Jul 08, 2014 at 03:44:27PM +0200, Daniel Vetter wrote:
 On Mon, Jul 07, 2014 at 10:30:52AM -0700, Greg KH wrote:
  On Mon, Jul 07, 2014 at 03:23:17PM +0200, Daniel Vetter wrote:
   On Wed, Jul 2, 2014 at 7:37 AM, Greg KH gre...@linuxfoundation.org 
   wrote:
Android can expose fences to userspace. It's possible to make the new 
fence
mechanism expose the same fences to userspace by changing 
sync_fence_create
to take a struct fence instead of a struct sync_pt. No other change 
is needed,
because only the fence parts of struct sync_pt are used. But because 
the
userspace fences are a separate problem and I haven't really looked 
at it yet
I feel it should stay in staging, for now.
   
Ok, that's reasonable.
   
At first glance, this all looks sane to me, any objection from anyone
if I merge this through my driver-core tree for 3.17?
  
   Ack from my side fwiw.
 
  Thanks, I'll queue it up later today.

 btw should we add you as a (co)maintainer for driver/core/dma-buf since
 you seem to want to keep a closer tab on what the insane gfx folks are up
 to in there?

 Sure, why not, what's one more maintainership...

 Oh, does that mean you want me to be the one collecting the patches and
 forwarding them on to Linus?  If so, that's fine, I can easily do that
 as well due to my infrastructure being set up for it.

If you're ok, I could continue to do the collecting / forwarding
business - I guess Daniel meant more from the 'not miss patches that
need review'!

Upto you!
 thanks,

 greg k-h
Thanks and best regards,
~Sumit


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Thanks and regards,

Sumit Semwal
Graphics Engineer - Graphics working group
Linaro.org │ Open source software for ARM SoCs
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Re: [PATCH v2 0/9] Updated fence patch series

2014-07-08 Thread Greg KH
On Tue, Jul 08, 2014 at 08:22:11PM +0530, Sumit Semwal wrote:
 On 8 July 2014 20:09, Greg KH gre...@linuxfoundation.org wrote:
  On Tue, Jul 08, 2014 at 03:44:27PM +0200, Daniel Vetter wrote:
  On Mon, Jul 07, 2014 at 10:30:52AM -0700, Greg KH wrote:
   On Mon, Jul 07, 2014 at 03:23:17PM +0200, Daniel Vetter wrote:
On Wed, Jul 2, 2014 at 7:37 AM, Greg KH gre...@linuxfoundation.org 
wrote:
 Android can expose fences to userspace. It's possible to make the 
 new fence
 mechanism expose the same fences to userspace by changing 
 sync_fence_create
 to take a struct fence instead of a struct sync_pt. No other change 
 is needed,
 because only the fence parts of struct sync_pt are used. But 
 because the
 userspace fences are a separate problem and I haven't really looked 
 at it yet
 I feel it should stay in staging, for now.

 Ok, that's reasonable.

 At first glance, this all looks sane to me, any objection from 
 anyone
 if I merge this through my driver-core tree for 3.17?
   
Ack from my side fwiw.
  
   Thanks, I'll queue it up later today.
 
  btw should we add you as a (co)maintainer for driver/core/dma-buf since
  you seem to want to keep a closer tab on what the insane gfx folks are up
  to in there?
 
  Sure, why not, what's one more maintainership...
 
  Oh, does that mean you want me to be the one collecting the patches and
  forwarding them on to Linus?  If so, that's fine, I can easily do that
  as well due to my infrastructure being set up for it.
 
 If you're ok, I could continue to do the collecting / forwarding
 business - I guess Daniel meant more from the 'not miss patches that
 need review'!

Hey, I'm more than willing to have other people do the real work of
collecting / forwarding :)

I'll just review stuff as it floats by, that's not enough of a role to
put me in MAINTAINERS at all.

thanks,

greg k-h
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Re: [PATCH v2 0/9] Updated fence patch series

2014-07-08 Thread Greg KH
On Wed, Jul 02, 2014 at 11:12:32AM +0200, Maarten Lankhorst wrote:
 op 02-07-14 07:37, Greg KH schreef:
  On Tue, Jul 01, 2014 at 12:57:02PM +0200, Maarten Lankhorst wrote:
  So after some more hacking I've moved dma-buf to its own subdirectory,
  drivers/dma-buf and applied the fence patches to its new place. I believe 
  that the
  first patch should be applied regardless, and the rest should be ready now.
  :-)
 
  Changes to the fence api:
  - release_fence - fence_release etc.
  - __fence_init - fence_init
  - __fence_signal - fence_signal_locked
  - __fence_is_signaled - fence_is_signaled_locked
  - Changing BUG_ON to WARN_ON in fence_later, and return NULL if it 
  triggers.
 
  Android can expose fences to userspace. It's possible to make the new fence
  mechanism expose the same fences to userspace by changing sync_fence_create
  to take a struct fence instead of a struct sync_pt. No other change is 
  needed,
  because only the fence parts of struct sync_pt are used. But because the
  userspace fences are a separate problem and I haven't really looked at it 
  yet
  I feel it should stay in staging, for now.
  Ok, that's reasonable.
 
  At first glance, this all looks sane to me, any objection from anyone
  if I merge this through my driver-core tree for 3.17?
 
 Sounds good to me, let me know when you pull it in, so I can rebase my
 drm conversion on top of it. :-)

All are now queued up and in my driver-core tree in the driver-core-next
branch, you should have gotten the emails about it.

thanks,

greg k-h
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Re: [PATCH v2 0/9] Updated fence patch series

2014-07-07 Thread Daniel Vetter
On Wed, Jul 2, 2014 at 7:37 AM, Greg KH gre...@linuxfoundation.org wrote:
 Android can expose fences to userspace. It's possible to make the new fence
 mechanism expose the same fences to userspace by changing sync_fence_create
 to take a struct fence instead of a struct sync_pt. No other change is 
 needed,
 because only the fence parts of struct sync_pt are used. But because the
 userspace fences are a separate problem and I haven't really looked at it yet
 I feel it should stay in staging, for now.

 Ok, that's reasonable.

 At first glance, this all looks sane to me, any objection from anyone
 if I merge this through my driver-core tree for 3.17?

Ack from my side fwiw.

Just for the record (again) about android syncpts. I think using
android syncpts stuff as the official userspace interfaces for fences
for userspace that wants to do explicit syncing is the sane approach -
after all the (only) big platform using explicit fencing is Android
since opencl is kinda not yet there really on linux (which would be
the other guy really interested in explicit fencing).

But before we de-stage android syncpts (and so bake in the userspace
abi forever) I really want to see a full upstream gpu driver
implementation using fences and running on both X+DRI userspace
(implicit syncing) and android (expclicit syncing), including good
test coverage for corner-cases to make sure we've addressed all warts
and hidden dragons. i915 looks like the most likely candidate to get
there first (we have the code for both use-cases out-of-tree after
all) so I'll keep on pestering people. No promises though ;-)

Cheers, Daniel
-- 
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch
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Re: [PATCH v2 0/9] Updated fence patch series

2014-07-07 Thread Greg KH
On Mon, Jul 07, 2014 at 03:23:17PM +0200, Daniel Vetter wrote:
 On Wed, Jul 2, 2014 at 7:37 AM, Greg KH gre...@linuxfoundation.org wrote:
  Android can expose fences to userspace. It's possible to make the new fence
  mechanism expose the same fences to userspace by changing sync_fence_create
  to take a struct fence instead of a struct sync_pt. No other change is 
  needed,
  because only the fence parts of struct sync_pt are used. But because the
  userspace fences are a separate problem and I haven't really looked at it 
  yet
  I feel it should stay in staging, for now.
 
  Ok, that's reasonable.
 
  At first glance, this all looks sane to me, any objection from anyone
  if I merge this through my driver-core tree for 3.17?
 
 Ack from my side fwiw.

Thanks, I'll queue it up later today.

greg k-h
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Re: [PATCH v2 0/9] Updated fence patch series

2014-07-07 Thread Sumit Semwal
Hi Greg,

On 2 July 2014 11:07, Greg KH gre...@linuxfoundation.org wrote:
 On Tue, Jul 01, 2014 at 12:57:02PM +0200, Maarten Lankhorst wrote:
 So after some more hacking I've moved dma-buf to its own subdirectory,
 drivers/dma-buf and applied the fence patches to its new place. I believe 
 that the
 first patch should be applied regardless, and the rest should be ready now.
 :-)

 Changes to the fence api:
 - release_fence - fence_release etc.
 - __fence_init - fence_init
 - __fence_signal - fence_signal_locked
 - __fence_is_signaled - fence_is_signaled_locked
 - Changing BUG_ON to WARN_ON in fence_later, and return NULL if it triggers.

 Android can expose fences to userspace. It's possible to make the new fence
 mechanism expose the same fences to userspace by changing sync_fence_create
 to take a struct fence instead of a struct sync_pt. No other change is 
 needed,
 because only the fence parts of struct sync_pt are used. But because the
 userspace fences are a separate problem and I haven't really looked at it yet
 I feel it should stay in staging, for now.

 Ok, that's reasonable.

 At first glance, this all looks sane to me, any objection from anyone
 if I merge this through my driver-core tree for 3.17?

Fwiw, Ack from me as well!
 thanks,

 greg k-h
Best regards,
~Sumit.
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Re: [PATCH v2 0/9] Updated fence patch series

2014-07-02 Thread Maarten Lankhorst
op 02-07-14 07:37, Greg KH schreef:
 On Tue, Jul 01, 2014 at 12:57:02PM +0200, Maarten Lankhorst wrote:
 So after some more hacking I've moved dma-buf to its own subdirectory,
 drivers/dma-buf and applied the fence patches to its new place. I believe 
 that the
 first patch should be applied regardless, and the rest should be ready now.
 :-)

 Changes to the fence api:
 - release_fence - fence_release etc.
 - __fence_init - fence_init
 - __fence_signal - fence_signal_locked
 - __fence_is_signaled - fence_is_signaled_locked
 - Changing BUG_ON to WARN_ON in fence_later, and return NULL if it triggers.

 Android can expose fences to userspace. It's possible to make the new fence
 mechanism expose the same fences to userspace by changing sync_fence_create
 to take a struct fence instead of a struct sync_pt. No other change is 
 needed,
 because only the fence parts of struct sync_pt are used. But because the
 userspace fences are a separate problem and I haven't really looked at it yet
 I feel it should stay in staging, for now.
 Ok, that's reasonable.

 At first glance, this all looks sane to me, any objection from anyone
 if I merge this through my driver-core tree for 3.17?

Sounds good to me, let me know when you pull it in, so I can rebase my drm 
conversion on top of it. :-)

~Maarten
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Re: [PATCH v2 0/9] Updated fence patch series

2014-07-01 Thread Greg KH
On Tue, Jul 01, 2014 at 12:57:02PM +0200, Maarten Lankhorst wrote:
 So after some more hacking I've moved dma-buf to its own subdirectory,
 drivers/dma-buf and applied the fence patches to its new place. I believe 
 that the
 first patch should be applied regardless, and the rest should be ready now.
 :-)
 
 Changes to the fence api:
 - release_fence - fence_release etc.
 - __fence_init - fence_init
 - __fence_signal - fence_signal_locked
 - __fence_is_signaled - fence_is_signaled_locked
 - Changing BUG_ON to WARN_ON in fence_later, and return NULL if it triggers.
 
 Android can expose fences to userspace. It's possible to make the new fence
 mechanism expose the same fences to userspace by changing sync_fence_create
 to take a struct fence instead of a struct sync_pt. No other change is needed,
 because only the fence parts of struct sync_pt are used. But because the
 userspace fences are a separate problem and I haven't really looked at it yet
 I feel it should stay in staging, for now.

Ok, that's reasonable.

At first glance, this all looks sane to me, any objection from anyone
if I merge this through my driver-core tree for 3.17?

thanks,

greg k-h
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