Messages in this thread | | | Date | Thu, 23 Oct 2008 10:05:53 +0200 | From | Ingo Molnar <> | Subject | Re: io resources and cached mappings (was: [git pull] drm patches for 2.6.27-rc1) |
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* Keith Packard <keithp@keithp.com> wrote:
> > okay. So ... mind sending your io_mapping patch as a generic > > facility? It looks all good to me in its present form, except that > > it should live in include/linux/io.h, not in the > > drivers/gpu/drm/i915/io_reserve.h file > > :-) > > The first patch in this series (assuming I'm driving git-send-email > correctly) adds the io_mapping API. I ended up creating a new > linux/io_mapping.h file as the kernel init code uses io.h and got very > angry when I tried to include linux/highmem.h from that. I'm afraid I > gave up at that point and just moved the code to a new file.
ah ... good call, i missed that mess. linux/io.h is indeed dependency laden and it's best to keep new facilities separated anyway.
> The second patch switches the drm/i915 driver to the new API. > Performance improvements on 64-bit kernels are impressive as we were > using the slow path before and now get to take advantage of 64-bit > wonderfulness.
heh, cool - the wonders of 64-bit x86 :-)
Any ballpark-figure numbers you can share with us?
Ingo
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