netdev - Re: unsafe locks seen with netperf on net-2.6.29 tree

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Message-ID: <20081229115827.GA441@elte.hu>
Date:	Mon, 29 Dec 2008 12:58:27 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Herbert Xu <herbert@...dor.apana.org.au>
Cc:	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	"Tantilov, Emil S" <emil.s.tantilov@...el.com>,
	"Kirsher, Jeffrey T" <jeffrey.t.kirsher@...el.com>,
	netdev <netdev@...r.kernel.org>,
	David Miller <davem@...emloft.net>,
	"Waskiewicz Jr, Peter P" <peter.p.waskiewicz.jr@...el.com>,
	"Duyck, Alexander H" <alexander.h.duyck@...el.com>,
	Eric Dumazet <dada1@...mosbay.com>
Subject: Re: unsafe locks seen with netperf on net-2.6.29 tree


* Herbert Xu <herbert@...dor.apana.org.au> wrote:

> On Mon, Dec 29, 2008 at 12:28:58PM +0100, Ingo Molnar wrote:
> >
> > i got the splat further below with Peter's workaround applied.
> 
> This looks like the issue that Peter's original patch (the one that 
> differentiated between instances of percpu counters) fixed. Did you have 
> both of his patches applied?

no, i only applied one of them. Is his second patch a good solution in 
your opinion, and should i thus test both of them? (or will the second one 
iterate some more - in which case i will keep the revert for now)

	Ingo
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