linux-kernel - Re: [PATCH 8/15] sched: Add parameter sched_mn_power_savings to control MN domain sched policy

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]

Message-ID: <20090827124712.GC13576@alberich.amd.com>
Date:	Thu, 27 Aug 2009 14:47:12 +0200
From:	Andreas Herrmann <andreas.herrmann3@....com>
To:	Gautham R Shenoy <ego@...ibm.com>
CC:	Peter Zijlstra <peterz@...radead.org>, Ingo Molnar <mingo@...e.hu>,
	linux-kernel@...r.kernel.org,
	Vaidyanathan Srinivasan <svaidy@...ux.vnet.ibm.com>,
	Balbir Singh <balbir@...ibm.com>
Subject: Re: [PATCH 8/15] sched: Add parameter sched_mn_power_savings to
	control MN domain sched policy

On Wed, Aug 26, 2009 at 03:00:43PM +0530, Gautham R Shenoy wrote:
> Hi Andreas,
> 
> On Thu, Aug 20, 2009 at 03:39:14PM +0200, Andreas Herrmann wrote:
> > @@ -9208,6 +9229,11 @@ int __init sched_create_sysfs_power_savings_entries(struct sysdev_class *cls)
> >  		err = sysfs_create_file(&cls->kset.kobj,
> >  					&attr_sched_mc_power_savings.attr);
> >  #endif
> > +#ifdef CONFIG_SCHED_MN
> > +	if (!err && mc_capable())
> > +		err = sysfs_create_file(&cls->kset.kobj,
> > +					&attr_sched_mn_power_savings.attr);
> > +#endif
> 
> This would create the sysfs tunable even on systems which are
> mc_capable() but don't have multi-nodes on a package, no ?

Yes, that is a bug. I should have introduced mn_capable() to
create this file only if really required.


Thanks,
Andreas

-- 
Operating | Advanced Micro Devices GmbH
  System  | Karl-Hammerschmidt-Str. 34, 85609 Dornach b. München, Germany
 Research | Geschäftsführer: Andrew Bowd, Thomas M. McCoy, Giuliano Meroni
  Center  | Sitz: Dornach, Gemeinde Aschheim, Landkreis München
  (OSRC)  | Registergericht München, HRB Nr. 43632


--
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/