[Intel-gfx] [PATCH] [RFC] LLC and per-BO cache handling

[Eric Anholt]

On Wed, 14 Dec 2011 00:33:00 -0200, Eugeni Dodonov <eugeni at dodonov.net> wrote:
> With base on comments and feedback on LLC handling from Daniel Vetter, Chris
> Wilson and Ben Widawsky, I reworked my patch into a more useful approach for
> detecting presence of different cache levels from userspace.
> 
> So, in this context, PATCH 1 adds the very same .has_llc flag and debugfs
> entry for it. PATCH 2 does the initial job of preparing to export cache
> levels to userspace, which can be queried via the DRM interface by means of
> PATCH 3. And finally, PATCH 4 allows to get and set a specific cache level for each
> bo.

So, I haven't come up with a usecase, and I don't think I've heard of
one: why do we want the cache level setting ioctl?
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