[Bug 107122] [CI] APL KBL: igt at kms_cursor_legacy@pipe - cleanup_done timed out

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=107122

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

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

--- Comment #3 from Chris Wilson <chris at chris-wilson.co.uk> ---
commit 41db645a33e775855aeeec1a437d5c1e24ff6c88 (HEAD -> drm-intel-next-queued,
drm-intel/drm-intel-next-queued)
Author: Chris Wilson <chris at chris-wilson.co.uk>
Date:   Thu Jul 12 12:57:29 2018 +0100

    drm/i915: Bump priority of clean up work

    We require that we keep the list of outstanding work short so that we do
    not "leak" memory while pageflipping under stress. However that system
    stress may delay kernel workers virtually indefinitely, which incurs the
    pageflips stall and eventually hit a timeout waiting for the cleanup.

    Try to combat CPU starvation of our short-lived cleanup workers by
    switching to a high priority workqueue.

    Testcase: igt/kms_cursor_legacy/all-pipes-torture-move
    References: https://bugs.freedesktop.org/show_bug.cgi?id=107122
    Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
    Cc: Daniel Vetter <daniel.vetter at ffwll.ch>
    Reviewed-by: Mika Kuoppala <mika.kuoppala at linux.intel.com>
    Link:
https://patchwork.freedesktop.org/patch/msgid/20180712115729.3506-1-chris@chris-wilson.co.uk

looks like it does the trick.

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