[Bug 99275] Kernel 4.9: amdgpu regression; gui flickers; amd radeon rx 460

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=99275

--- Comment #23 from Reimar Imhof <tuxuser at quantentunnel.de> ---
After freedektop-drm-next-4.9-wip was ok, I build some pre 4.9 kernels:
(repository: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git)

7af8a0f8088831428051976cb06cc1e450f8bab5
Merge tag 'arm64-upstream' of
git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
--> ok

d7a0dab82fef61bebd34f2bbb9314b075153b646
Merge branch 'core-smp-for-linus' of
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
--> ok

e606d81d2d9596ab2b4fd0dc052eea0485b7e8c2
Merge branch 'ras-core-for-linus' of
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
--> ok

af79ad2b1f337a00aa150b993635b10bc68dc842
Merge branch 'sched-core-for-linus' of
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
--> bug, flickers

So af79ad2b1f337a00aa150b993635b10bc68dc842 turns out to be the first buggy
commit.
Pull scheduler changes from Ingo Molnar:
     "The main changes are:

       - irqtime accounting cleanups and enhancements. (Frederic Weisbecker)

       - schedstat debugging enhancements, make it more broadly runtime
         available. (Josh Poimboeuf)

       - More work on asymmetric topology/capacity scheduling. (Morten
         Rasmussen)

       - sched/wait fixes and cleanups. (Oleg Nesterov)

       - PELT (per entity load tracking) improvements. (Peter Zijlstra)

       - Rewrite and enhance select_idle_siblings(). (Peter Zijlstra)

       - sched/numa enhancements/fixes (Rik van Riel)

       - sched/cputime scalability improvements (Stanislaw Gruszka)

       - Load calculation arithmetics fixes. (Dietmar Eggemann)

       - sched/deadline enhancements (Tommaso Cucinotta)

       - Fix utilization accounting when switching to the SCHED_NORMAL
         policy. (Vincent Guittot)

       - ... plus misc cleanups and enhancements"

Do these scheduler changes somehow break amdgpu?

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