linux-kernel - Re: [PATCH 1/3] sched,numa: count pages on active node as local

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, 11 Apr 2014 11:01:50 -0700
From:	Joe Perches <joe@...ches.com>
To:	Rik van Riel <riel@...hat.com>
Cc:	linux-kernel@...r.kernel.org, mingo@...nel.org,
	peterz@...radead.org, chegu_vinod@...com, mgorman@...e.de
Subject: Re: [PATCH 1/3] sched,numa: count pages on active node as local

On Fri, 2014-04-11 at 13:41 -0400, Rik van Riel wrote:
> On 04/11/2014 01:34 PM, Joe Perches wrote:
> > On Fri, 2014-04-11 at 13:00 -0400, riel@...hat.com wrote:
> >> This should reduce the overhead of the automatic NUMA placement
> >> code, when a workload spans multiple NUMA nodes.
[]
> > Perhaps local would look nicer as bool
> > and be better placed next to migrated.
> 
> The problem is, at the end of the function, local is used as an
> array index...

Oh, thanks.

>         p->numa_faults_locality[local] += pages;
> 
> I'm not sure I really want to use a bool as an array index :)

Nor I particularly but using bool as an array index is
already done in at least kernel/workqueue.c and
kernel/trace/blktrace.c

Doesn't make it right of course.

--
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/