[Bug 104008] [BAT][CI] igt@* - fail - Failed assertion: poll(&pfd, 1, 0) == 1

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=104008

Chris Wilson <chris at chris-wilson.co.uk> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |WORKSFORME
             Status|NEW                         |RESOLVED

--- Comment #15 from Chris Wilson <chris at chris-wilson.co.uk> ---
prime_vgem/basic-fence-flip timing loop was rewritten and should avoid this
problem

commit f43bb29c3e29143d8ad5fc70b82eccf5749d3958
Author: Chris Wilson <chris at chris-wilson.co.uk>
Date:   Thu Apr 4 08:01:04 2019 +0100

    prime_vgem: Downgrade the severity of a single missed vblank on flipping

    Not displaying the flip on the next vblank is bad, but not the end of
    the world -- so long as that is only a temporary glitch. Give the vblank
    a few more frames to complete, and warn instead of failing if it takes
    more than one vblank interval to flip.

    v2: Bump the warning to >1 missed flip, to spare us the noise.

    Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
    Reviewed-by: Daniel Vetter <daniel.vetter at ffwll.ch>

commit f539e21e934019f0196fee646f351b4e30a8c341
Author: Chris Wilson <chris at chris-wilson.co.uk>
Date:   Mon Apr 1 08:55:20 2019 +0100

    prime_vgem: Replace nanosleep with igt_waitchildren_timeout

    We want to use a child in order to detect an uninterruptable sleep (a
    potential bug we might hit), but we can use igt_waitchildren_timeout()
    to replace our risky self-signaling + nanosleep.

    v2: Remove the now redundant signal() setup.

    Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=103182
    Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
    Reviewed-by: Daniel Vetter <daniel.vetter at ffwll.ch>

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