linux-kernel - Re: cpu_active vs pcrypt & padata

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <1332018034.18960.247.camel@twins>
Date:	Sat, 17 Mar 2012 22:00:34 +0100
From:	Peter Zijlstra <peterz@...radead.org>
To:	Steffen Klassert <steffen.klassert@...unet.com>
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 Fri, 2012-03-16 at 11:44 +0100, Steffen Klassert wrote:
> Hi.
> 
> On Fri, Mar 16, 2012 at 11:13:08AM +0100, Peter Zijlstra wrote:
> > Hi Steffen,
> > 
> > I found cpu_active usage in crypto/pcrypt.c and was wondering what
> > that's doing there. I would really like to contain that thing to as
> > narrow a piece of kernel as I possible can (sched/cpuset/hotplug) but it
> > appears to be spreading.
> 
> 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.

> > Also, wth is all this kernel/padata.c stuff? There's next to no useful
> > comment in there and the only consumer seems to be pcrypt, does that
> > really need to be in kernel/ ?
> 
> 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.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/