linux-kernel - Re: [PATCH] cputopology: Always define CPU topology information [4th try]

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:	Thu, 5 Jun 2008 13:08:30 +0100
From:	Ben Hutchings <bhutchings@...arflare.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	linux-kernel@...r.kernel.org, Ingo Molnar <mingo@...e.hu>,
	Vegard Nossum <vegard.nossum@...il.com>
Subject: Re: [PATCH] cputopology: Always define CPU topology information [4th try]

Andrew Morton wrote:
> On Wed, 4 Jun 2008 16:44:56 +0100 Ben Hutchings <bhutchings@...arflare.com> wrote:
> 
> > Not all architectures and configurations define CPU topology information.
> > This can result in an empty topology directory in sysfs, and requires
> > in-kernel users to protect all uses with #ifdef - see
> > <http://marc.info/?l=linux-netdev&m=120639033904472&w=2>.
> > 
> > The documentation of CPU topology specifies what the defaults should be
> > if only partial information is available from the hardware.  So we can
> > provide these defaults as a fallback.
> > 
> > This patch:
> > 
> > - Adds default definitions of the 4 topology macros to <linux/topology.h>
> > - Changes drivers/base/topology.c to use the topology macros unconditionally
> >   and to cope with definitions that aren't lvalues
> > - Updates documentation accordingly
> 
> See, this is what I meant.  After your patch we have:
[...]

Sorry, I don't know how that escaped me.  My changes to the show functions
should be unnecessary - though I think that the two different implementations
for lvalues and rvalues are a premature optimisation.

Ben.

-- 
Ben Hutchings, Senior Software Engineer, Solarflare Communications
Not speaking for my employer; that's the marketing department's job.
--
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/