Re: [PATCH] use 64bit timer for hpet

From: Thomas Gleixner
Date: Mon Jul 12 2021 - 04:08:48 EST


On Mon, Jul 12 2021 at 12:52, Linux wrote:
>> Sorry, keeping the softirq from running for 3 minutes is simply out of
>> spec. If the sysadmin decides to do so, then he can keep the pieces.
> It is because the kernel thread is busy that the clocksource_watchdog
> thread is not scheduled, not softirq.

Which thread?

The clocksource watchdog runs from a timer_list timer callback in
softirq context. Even if the softirq is switched to the softirq thread
then still my argument of starving that for 3 minutes still stands.

This is _not_ a kernel problem. Overcommitment is a admin problem.