Messages in this thread | | | Subject | Re: [RFC PATCH 15/15] nohz_task: Procfs interface | From | Peter Zijlstra <> | Date | Tue, 21 Dec 2010 09:14:40 +0100 |
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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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