[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 #7 from Chris Wilson <chris at chris-wilson.co.uk> ---
I can run gem_ppgtt/blt-vs-render-ctxN in a loop for hours upon hours on kbl.
The number of gem objects stays beneath 1000 and memory usage negligible.

Went through the test and rendercopy_gen9 (which is also gen11) and there is
nothing that looks like a leak, nor does valgrind think there is (significant
at least).

I suppose if I dump meminfo/slabinfo before the test begins, we should then be
able to compare with the allocation failure to see if the shmem usage is solely
due to the test.

In terms of patches, the one that stands out as being of interest would be

commit 64e3d12f769d60eaee6d2e53a9b7f0b3814f32ed
Author: Kuo-Hsin Yang <vovoy at chromium.org>
Date:   Tue Nov 6 13:23:24 2018 +0000

    mm, drm/i915: mark pinned shmemfs pages as unevictable

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