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Date: Thu, 7 Jul 2011 12:23:44 -0400
From: Jason Baron <jbaron@redhat.com>
To: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>, Paul Turner <pjt@google.com>,
        linux-kernel@vger.kernel.org,
        Bharata B Rao <bharata@linux.vnet.ibm.com>,
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        Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>,
        Pavel Emelyanov <xemul@openvz.org>, Hu Tao <hutao@cn.fujitsu.com>
Subject: Re: [patch 00/17] CFS Bandwidth Control v7.1
Message-ID: <20110707162344.GB2536@redhat.com>
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On Thu, Jul 07, 2011 at 04:56:20PM +0200, Ingo Molnar wrote:
> * Peter Zijlstra <a.p.zijlstra@chello.nl> wrote:
> 
> > On Thu, 2011-07-07 at 16:51 +0200, Ingo Molnar wrote:
> > > > Going beyond that
> > > > would be using static_branch() to track if there is any bandwidth
> > > > tracking required at all.
> > > 
> > > Could jump labels be utilized perhaps? 
> > 
> > # git grep static_branch include/linux/
> > include/linux/jump_label.h:static __always_inline bool static_branch(struct jump_label_key *key)
> 
> Right - i only read up to your first, __always_inline suggestion :)
> 
> Thanks,
> 
> 	Ingo

yes, this is the type of case jump labels is designed for. Let me know
if there are any usage questions/concerns.

thanks,

-Jason