Re: [PATCH] fixes to drm-next - TTM DMA code (v1)

From: Jerome Glisse
Date: Tue Dec 13 2011 - 11:03:56 EST


On Mon, Dec 12, 2011 at 03:09:26PM -0500, Konrad Rzeszutek Wilk wrote:
> Jerome pointed me to some accounting error in the DMA API debugging code and
> while I can't figure it out yet, I did notice some extreme slowness - which
> is due to the nouveau driver calling the unpopulate (now that unbind +
> unpopulate are squashed) quite a lot (this is using Gnome Shell - I think GNOME2
> did not have those issues but I can't recall).
>
> Anyhow these patches fix the 50% perf regression I saw and also some minor bugs
> that I noticed.
>

Gonna review those today and test them.

Cheers,
Jerome
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