linux-kernel - Re: [patch 2/2] cpusets: add interleave_over

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: Windows password security audit tool. GUI, reports in PDF.

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

Date:	Fri, 26 Oct 2007 14:08:50 -0700 (PDT)
From:	David Rientjes <rientjes@...gle.com>
To:	Christoph Lameter <clameter@....com>
cc:	Paul Jackson <pj@....com>, Lee.Schermerhorn@...com,
	akpm@...ux-foundation.org, ak@...e.de, linux-kernel@...r.kernel.org
Subject: Re: [patch 2/2] cpusets: add interleave_over_allowed option

On Fri, 26 Oct 2007, Christoph Lameter wrote:

> > Well, passing a single node to set_mempolicy() for MPOL_INTERLEAVE doesn't 
> > make a whole lot of sense in the first place.  I prefer your solution of 
> > allowing set_mempolicy(MPOL_INTERLEAVE, NODE_MASK_ALL) to mean "interleave 
> > me over everything I'm allowed to access."  NODE_MASK_ALL would be stored 
> > in the struct mempolicy and used later on mpol_rebind_policy().
> 
> So instead of an empty nodemask we would pass a nodemask where all bits 
> are set? And they would stay set but the cpuset restrictions would 
> effectively limit the interleaving to the allowed set?
> 

You would pass NODE_MASK_ALL if your intent was to interleave over 
everything you have access to, yes.  Otherwise you can pass whatever you 
want access to and your interleaved nodemask becomes 
mpol_rebind_policy()'s newmask formal (the cpuset's new mems_allowed) 
AND'd with pol->passed_nodemask.
-
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/