[Bug 111732] [CI][SHARDS] igt at perf@gen8-unprivileged-single-ctx-counters|igt at gem_softpin@softpin| igt at gem_pipe_control_store_loop@reused-buffer - timeout - Received signal SIGQUIT.

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=111732

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

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

--- Comment #10 from Chris Wilson <chris at chris-wilson.co.uk> ---
commit 58b4c1a07ada7fb91ea757bdb9bd47df02207357 (HEAD -> drm-intel-next-queued,
drm-intel/drm-intel-next-queued)
Author: Chris Wilson <chris at chris-wilson.co.uk>
Date:   Tue Nov 26 06:55:21 2019 +0000

    drm/i915: Reduce nested prepare_remote_context() to a trylock

    On context retiring, we may invoke the kernel_context to unpin this
    context. Elsewhere, we may use the kernel_context to modify this
    context. This currently leads to an AB-BA lock inversion, so we need to
    back-off from the contended lock, and repeat.

    Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=111732
    Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
    Fixes: a9877da2d629 ("drm/i915/oa: Reconfigure contexts on the fly")
    Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
    Link:
https://patchwork.freedesktop.org/patch/msgid/20191126065521.2331017-1-chris@chris-wilson.co.uk

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