Re: [RFC PATCH 15/15] nohz_task: Procfs interface

[Peter Zijlstra]

On Tue, 2010-12-21 at 02:24 +0100, Frederic Weisbecker wrote:
> 
> > Also, I'm not quite happy with the pure userspace restriction, but at
> > least I see why you did that event though you didn't mention that.
> 
> What do you mean? The fact that kernel threads can not be nohz task? 

No, that you key off kernel/user boundary transitions. Arguably one
could allow simply system calls and page-faults to happen without
restarting the tick, then again, RCU is very pervasive these days so I'm
not quite sure you can actually make that happen.


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