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

[Peter Zijlstra]

On Mon, 2010-12-20 at 16:24 +0100, Frederic Weisbecker wrote:
> This implements the /proc/pid/nohz file that enables the
> nohz attribute of a task.
> 
> Synchronization is enforced so that:
> 
> - A CPU can have only one nohz task

Why?

> - A nohz task can be only affine to a single CPU

Why?

> For now this is only possible to write on /proc/self but probably
> allowing it from another task would be a good idea and wouldn't
> increase so much the complexity of the code. 

ptrace rules might match that.
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