Re: [v4 RFC PATCH 1/4] timers: Framework for identifying pinned timers

[Andi Kleen]

On Wed, Apr 01, 2009 at 05:02:58PM +0530, Arun R Bharadwaj wrote:
> * Arun R Bharadwaj <arun@xxxxxxxxxxxxxxxxxx> [2009-04-01 17:01:28]:
> 
> This patch creates a new framework for identifying cpu-pinned timers
> and hrtimers.
> 
> 
> This framework is needed because pinned timers are expected to fire on
> the same CPU on which they are queued. So it is essential to identify
> these and not migrate them, in case there are any.

How would that interact with add_timer_on()? You currently only
support the current CPU, don't you?

e.g. the new tip x86 machine check polling code relies on add_timer_on
staying on that CPU.

-Andi

-- 
ak@xxxxxxxxxxxxxxx -- Speaking for myself only.
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