Re: [PATCH] drm/syncobj: add sync obj wait interface. (v6)

Christian König <deathsimple@xxxxxxxxxxx> · Wed, 12 Jul 2017 18:45:38 +0200



    Am 12.07.2017 um 17:53 schrieb Jason
      Ekstrand:

    
          [SNIP]

             
              Is that easier than just waiting in the kernel, I'm
              not sure how

              optimised we need this path to be.

                
        I don't think so.  I think it's
          more-or-less the same code regardless of how it's done.  The
          advantage of doing it in the kernel is that it's standardized
          (we don't have to both go write that userspace code) and it
          doesn't have the problems stated above.

        
    Ok, I'm convinced. The next price question is then how do we do it?

    
    I mean writing an IOCTL to wait for a fence to appear is simple, but
    do we also need to wait for a fence to change?

    
    As long as waits don't consume fences that might be rather tricky.

    
    Christian.

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