Re: [PATCH] sched/fair: fix pick_eevdf to always find the correct se

[Peter Zijlstra]

On Fri, Oct 06, 2023 at 12:31:28PM +0200, Mike Galbraith wrote:
> On Fri, 2023-10-06 at 10:35 +0200, Marek Szyprowski wrote:
> >
> >
> > Just to note, I've run into this issue on the QEmu's 'arm64/virt'
> > platform, not on the Samsung specific hardware. 
> 
> It doesn't appear to be arch specific, all I have to do is enable
> autogroup, raspberry or x86_64 desktop box, the occasional failure
> tripping over task groups, leaving both best and best_left with
> identical but not what we're looking for ->min_deadline.

OK, autogroups enabled and booted, /debug/sched/debug shows autogroups
are indeed in existence.

I've ran hackbench and a kernel build, but no whoopsie yet :-(

I suppose I'll kick some benchmarks and go make a cup 'o tea or
something.