Re: [PATCH RFC v4 2/3] sched: Avoid placing RT threads on cores handling long softirqs

[Alexander Gordeev]

On Wed, Oct 19, 2022 at 03:09:15PM -0700, John Stultz wrote:

Hi John,

[...]

> So I'll go ahead and simplify the check to just the LONG_SOFTIRQ_MASK
> & (active | pending softirqs) check. This should avoid the need to
> pull the cpu_rq(cpu)->curr value and simplify things.

In my reading of your approach if you find a way to additionally
indicate long softirqs being handled by the remote ksoftirqd, it
would cover all obvious/not-corner cases.

> -john