linux-kernel - Re: [PATCH] sched: fix constructing the span cpu mask of sched domain

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]

Date:	Wed, 11 May 2011 15:54:15 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Hillf Danton <dhillf@...il.com>
Cc:	LKML <linux-kernel@...r.kernel.org>, Ingo Molnar <mingo@...e.hu>,
	Mike Galbraith <efault@....de>,
	Yong Zhang <yong.zhang0@...il.com>,
	Andreas Herrmann <andreas.herrmann3@....com>
Subject: Re: [PATCH] sched: fix constructing the span cpu mask of sched
 domain

On Wed, 2011-05-11 at 21:26 +0800, Hillf Danton wrote:
> Your work for rewriting NUMA support, published at
>          http://marc.info/?l=linux-kernel&m=130218515520540
> is patched by changing how level is computed and by changing how it is
> used to build the mask.
> 
> When computing, some valid levels are lost in your work.
> 
> When building mask, nodes are selected only if they have same distance,
> thus nodes of less distance are also masked out since the computation of
> level now is tough.
> 
> Without MUNA hardware, I did not test the patch:(

I do have a (tiny) NUMA box (2 nodes) but that actually booted with the
old code too, Andreas Hermann from AMD (CC'ed) is usually willing to
test such patches on somewhat larger systems. Please send a full patch
against tip/master for him to apply.

--
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/