Re: [RFC][PATCH 00/16] sched: Core scheduling

[Subhra Mazumdar]

On 3/10/19 9:23 PM, Aubrey Li wrote:
> On Sat, Mar 9, 2019 at 3:50 AM Subhra Mazumdar
> <subhra.mazumdar@xxxxxxxxxx> wrote:
> > expected. Most of the performance recovery happens in patch 15 which,
> > unfortunately, is also the one that introduces the hard lockup.
> After applied Subhra's patch, the following is triggered by enabling
> core sched when a cgroup is
> under heavy load.
It seems you are facing some other deadlock where printk is involved. 
Can you
drop the last patch (patch 16 sched: Debug bits...) and try?

Thanks,
Subhra