[Bug 109801] [CI][DRMTIP] igt at gem_ppgtt@blt-vs-render-ctxn - dmesg-warn - swap is full

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=109801

--- Comment #2 from Chris Wilson <chris at chris-wilson.co.uk> ---
So fingers crossed this is just bad resource estimation and not a true leak:

commit 4e7296aa879350b10a216b88fa7f44d919765765 (HEAD, upstream/master)
Author: Chris Wilson <chris at chris-wilson.co.uk>
Date:   Thu Feb 28 15:30:43 2019 +0000

    i915/gem_ppgtt: Estimate resource usage and bail if it means swapping!

    fi-kbl-guc's swap ran dry while running blt-vs-render-ctxN, which is
    mildly concerning but conceivable as we never checked there was enough
    memory to run the test to begin with.

    Each child needs to keep its own surface and possible a pair of logical
    contexts (one for rcs and one for bcs) so check that there is enough
    memory to allow all children to co-exist. During execution, we require
    another surface and batch, but these are temporary and so should fit
    fine with a small amount of thrashing on the boundary.

    References: https://bugs.freedesktop.org/show_bug.cgi?id=109801
    Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
    Reviewed-by: Mika Kuoppala <mika.kuoppala at linux.intel.com>

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