linux-kernel - Re: [PATCH] cpu hotplug, sched: Introduce cpu_active_map and redo sched domain managment (take 2)

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Message-Id: <1216123385.12595.177.camel@twins>
Date:	Tue, 15 Jul 2008 14:03:05 +0200
From:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
To:	Marcel Holtmann <marcel@...tmann.org>
Cc:	Max Krasnyansky <maxk@...lcomm.com>, mingo@...e.hu,
	dmitry.adamushko@...il.com, torvalds@...ux-foundation.org,
	pj@....com, ghaskins@...ell.com, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] cpu hotplug, sched: Introduce cpu_active_map and redo
	sched domain managment (take 2)

On Tue, 2008-07-15 at 13:57 +0200, Marcel Holtmann wrote:
> Hi Peter,
> 
> > > >   *  #ifdef CONFIG_HOTPLUG_CPU
> > > >   *     cpu_possible_map - has bit 'cpu' set iff cpu is populatable
> > > >   *     cpu_present_map  - has bit 'cpu' set iff cpu is populated
> > > >   *     cpu_online_map   - has bit 'cpu' set iff cpu available to scheduler
> > > > + *     cpu_active_map   - has bit 'cpu' set iff cpu available to migration
> > > 
> > > why not just fixing all spelling mistakes instead of keeping them
> > > around ;)
> > 
> > What spelling mistakes?
> 
> so it wasn't meant to say "... if cpu ..." and I simply miss something
> here (which is possible)?

It's a math term, iff means: if and only if.





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