On to, 2017-06-01 at 14:33 +0100, Chris Wilson wrote:
> In commit 5763ff04dc4e ("drm/i915: Avoid GPU stalls from kswapd") we
> stopped direct reclaim and kswapd from triggering GPU/client stalls
> whilst running (by restricting the objects they could reap to be idle).
>
> However with abusive GPU usage, it becomes quite easy to starve kswapd
> of memory and prevent it from making forward progress towards obtaining
> enough free memory (thus driving the system closer to swap exhaustion).
> Relax the previous restriction to allow kswapd (but not direct reclaim)
> to stall the device whilst reaping purgeable pages.
>
> v2: Also acquire the rpm wakelock to allow kswapd to unbind buffers.
>
> Signed-off-by: Chris Wilson <ch...@chris-wilson.co.uk>
> Cc: Joonas Lahtinen <joonas.lahti...@linux.intel.com>
These are the kind of patches one wishes we had good testing coverage.
Reviewed-by: Joonas Lahtinen <joonas.lahti...@linux.intel.com>
Regards, Joonas
--
Joonas Lahtinen
Open Source Technology Center
Intel Corporation
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