Re: sched_core_balance() releasing interrupts with pi_lock held

[Sebastian Andrzej Siewior]

On 2022-03-16 17:18:41 [+0100], To Steven Rostedt wrote:
> on top my problems are gone. Let me do some testing and then I would
> patch unless PeterZ does the yelling :)

so the long irq-off section is latency wise less than optimal. A
testcase went from ~40 to 140us. And then there is this:
| NOHZ tick-stop error: Non-RCU local softirq work is pending, handler #80!!!
| NOHZ tick-stop error: Non-RCU local softirq work is pending, handler #10!!!

which might be RT-only.
I *think* we want first the buggy part gone and then the latency fixed.

> > > Thanks,
> > > 
> > > -- Steve

Sebastian