linux-kernel - Re: cpu_active vs pcrypt & padata

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Date:	Tue, 20 Mar 2012 08:44:57 +0100
From:	Steffen Klassert <steffen.klassert@...unet.com>
To:	Peter Zijlstra <peterz@...radead.org>
Cc:	Ingo Molnar <mingo@...e.hu>, Thomas Gleixner <tglx@...utronix.de>,
	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: cpu_active vs pcrypt & padata

On Sat, Mar 17, 2012 at 10:00:34PM +0100, Peter Zijlstra wrote:
> On Fri, 2012-03-16 at 11:44 +0100, Steffen Klassert wrote:
> > 
> > pcrypt uses cpu_active to tell padata which cpuset it whishes
> > to use for parallelization. I could try to push the cpumask
> > handling down to padata if you want to limit this to the core
> > kernel.
> 
> /me more confused now.. cpu_active isn't in any way shape or form
> related to cpusets.

When looking at this, it seems that cpu_online_mask is the mask
we should use instead of cpu_active_mask. I'll go in for a closer
look at the end of the week.

> > 
> > The padata code is generic and not limited to crypto, you can find
> > a documentation at Documentation/padata.txt.
> 
> Would be nice to have a short blurb in kernel/padata.c with a reference
> to that Documentation stuff for more in-depth bits.

Indeed, I'll take care for this.
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