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Message-ID: <1323381045.17673.22.camel@twins>
Subject: Re: [patch v3 5/6] sched, ttwu_queue: queue remote wakeups only
 when crossing cache domains
From: Peter Zijlstra <peterz@infradead.org>
To: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: Mike Galbraith <efault@gmx.de>, Ingo Molnar <mingo@elte.hu>,
        Venki Pallipadi <venki@google.com>,
        Srivatsa Vaddagiri <vatsa@linux.vnet.ibm.com>,
        linux-kernel <linux-kernel@vger.kernel.org>,
        Tim Chen <tim.c.chen@linux.jf.intel.com>,
        "Shi, Alex" <alex.shi@intel.com>
Date: Thu, 08 Dec 2011 22:50:45 +0100
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On Thu, 2011-12-08 at 11:34 -0800, Suresh Siddha wrote:
> On Thu, 2011-12-08 at 01:29 -0800, Peter Zijlstra wrote:
> > On Wed, 2011-12-07 at 11:20 -0800, Suresh Siddha wrote:
> > 
> > > > +DEFINE_PER_CPU(int, sd_top_spr_id);
> > > 
> > > pkg_srid (shared resource id)?
> > 
> > How about sd_llc{,_id} ?
> 
> There is a reason why I didn't mention it ;)
> 
> It is not always LLC. In power-savings mode, we group the cores sharing
> the power-domain (typically the whole package) irrespective of one more
> multiple LLC's etc.
> 
> Anyways, it is just a