[Bug 86891] AMD/ATI Tahiti XT 7970 - long lags/stutters in games

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=86891

--- Comment #8 from Dieter Nützel <Dieter at nuetzel-hh.de> ---
(In reply to Michael Mair-Keimberger from comment #6)
> (In reply to Dieter Nützel from comment #5)
> > Can you please test with one of kernel git | 3.18-rc2 | drm-next together
> > with
> > git revert 59bc1d8?
> 
> I've tried it with kernel git 3.18rc2 with a pull a few minutes ago and with
> `git revert 59bc1d8`. The result looks promising. I've made two benchmarks:
> 
>          1st     2nd
> FPS:     18.3    18.1
> Score:   765     757
> Min FPS: 5.9     6.3
> Max FPS: 32.4    31.9

Yes, looks much better, but the code shouldn't touch any relevant
(radeonsi/r600g) code paths. - Michel?

On r600g (RV730 AGP) I do NOT see any (real) change with this revert...
Maybe we do not hit the real BAD commit.

> I didn't include drm-next simply because i don't know how todo that. :) If
> you want me to test drm-next as well please point me to some documentation
> how to include it. :)

Alex's drm-next-3.19-wip (it shows 3.17-rc5 ;-) for example:
git clone git://people.freedesktop.org/~agd5f/linux/ drm-next-3.19-wip

If you have it already, get it or change it to another tree:
cd drm-next-3.19-wip
git checkout -b drm-next-3.19-wip remotes/origin/drm-next-3.19-wip

Sometimes you need this:
git fetch origin
git reset --hard origin/drm-next-3.19-wip

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