On Wed, 14 Dec 2011 00:33:00 -0200, Eugeni Dodonov <eug...@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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