[Bug 72742] [ILK/HSW]igt/gem_tiled_swapping randomly causes OOM killer

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=72742

--- Comment #101 from Jesse Barnes <jbarnes at virtuousgeek.org> ---
Since this test is about swapping and tiling/de-swizzling, maybe it makes sense
to exclude it from the OOM killer or disable the OOM killer entirely while it's
being run?  Not sure if it would still work well with vm.overcommit_memory=2.

For a stress test that wouldn't make sense, but I don't think that's what we're
trying to verify here with this artificial test.

Alternately, we could add a debugfs hook to force swapping and readback testing
rather than trying to push the kernel into it from userspace.

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