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SubjectRe: [PATCH] stop on cpu lost
On Thu, 22 Jun 2006 12:04:31 -0500
Nathan Lynch <> wrote:

> Randy.Dunlap wrote:
> > Sounds like we are getting nowhere. The sysctl knob might
> > have to be the answer.
> I don't like having the kernel forcibly kill or stop tasks for this
> case, regardless of whether the behavior is configurable. What I
> originally meant to suggest was a sysctl knob which will control
> whether the offline will fail in this situation.
Okay, stop_on_cpu_lost patcfh is not good anyway.
Andrew, could you drop stop_on_cpu_lost patch ?

From this discussion, it seems there is a direction.
I'll update my avoid_cpu_removal_if_busy patch and add sysctl for it.

> But I'm still more inclined to leave the kernel's handling of this as it
> stands, since this is policy that can be implemented in userspace.
A program to walk through all tasks and check thier allowd_cpus ?

> We need to preserve the current behavior as the default, in any case.
I agree here.


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