[Devel] Re: [RFC][-mm] Simple stats for cpu resource controller v3

[Balaji Rao]

On Friday 02 May 2008 02:30:26 am Andrew Morton wrote:
<snip>

Hi Andrew,

Thank you for the review.
>
> Did you consider using include/linux/percpu_counter.h?
>
> If so, what was wrong with it?
>
> Because it would be much better to fix per-cpu counters than to invent new
> stuff.
No, I hadn't consider using the percpu_counters infrastructure. But today when 
I tried using it, I got an early exception.I guess its because I tried 
calling percpu_counter_init from within sched_init, which I perhaps shouldn't 
do, because percpu_counter_init expects cpu hotplug code to be initialized by 
then. Right ? Correct me if I'm wrong.

How about we start collecting statistics at a later stage i.e, after 
percpu_counter becomes usable ?

-- 
Warm Regards,

Balaji Rao
Dept. of Mechanical Engineering
NITK
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