linux-kernel - Re: [RFC PATCH 0/4] timers: framework for migration between CPU

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Message-ID: <20090226161255.GA15390@elte.hu>
Date:	Thu, 26 Feb 2009 17:12:55 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Cc:	Dipankar Sarma <dipankar@...ibm.com>,
	Vaidyanathan Srinivasan <svaidy@...ux.vnet.ibm.com>,
	Balbir Singh <balbir@...ux.vnet.ibm.com>,
	Arjan van de Ven <arjan@...radead.org>,
	linux-kernel@...r.kernel.org, linux-pm@...ts.linux-foundation.org,
	ego@...ibm.com, tglx@...utronix.de, andi@...stfloor.org,
	venkatesh.pallipadi@...el.com, vatsa@...ux.vnet.ibm.com,
	arun@...ux.vnet.ibm.com, Suresh Siddha <suresh.b.siddha@...el.com>
Subject: Re: [RFC PATCH 0/4] timers: framework for migration between CPU


* Peter Zijlstra <a.p.zijlstra@...llo.nl> wrote:

> On Thu, 2009-02-26 at 16:45 +0100, Ingo Molnar wrote:
> 
> > Yes - but that kind of policy should be coupled and expressed 
> > via cpusets. /proc based irq_affinity is just a limited, 
> > inflexible hack. All things IRQ partitioning should be handled 
> > via cpusets - perhaps via the 'system sets' idea from Peter?
> 
> all we got out of that idea was the default_smp_affinity thing 
> in /proc/irq and a head-ache trying to work out silly details.
> 
> Maybe we ought to try again,..

Your system sets patch was actually very sane, it just fell 
victim to a merge window i think. Mind re-sending it?

	Ingo
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