https://bugs.freedesktop.org/show_bug.cgi?id=99275
--- Comment #23 from Reimar Imhof tuxuser@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?