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Date: Tue, 24 May 2011 15:56:49 +0800 From: Xiao Guangrong <xiaoguangrong@...fujitsu.com> To: Hidetoshi Seto <seto.hidetoshi@...fujitsu.com> CC: Paul Turner <pjt@...gle.com>, linux-kernel@...r.kernel.org, Peter Zijlstra <a.p.zijlstra@...llo.nl>, Bharata B Rao <bharata@...ux.vnet.ibm.com>, Dhaval Giani <dhaval.giani@...il.com>, Balbir Singh <balbir@...ux.vnet.ibm.com>, Vaidyanathan Srinivasan <svaidy@...ux.vnet.ibm.com>, Srivatsa Vaddagiri <vatsa@...ibm.com>, Kamalesh Babulal <kamalesh@...ux.vnet.ibm.com>, Ingo Molnar <mingo@...e.hu>, Pavel Emelyanov <xemul@...nvz.org>, Hu Tao <hutao@...fujitsu.com> Subject: Re: Test for CFS Bandwidth Control V6 On 05/24/2011 08:53 AM, Hidetoshi Seto wrote: > I confirmed that running your test cause hung-up on my box. > And after some investigation, I found that this is an infinite loop > in migrate_task() due to miscalculation of rq->nr_running; when a > task is queued to throttled entity the nr_running is incremented at > the queuing and also the unthrottling. > > I made a fix for this bug and it seems works well for me. > Could you try this patch and give us your feedback, Xiao? > Thanks for your nice fix, Seto! Everything goes well now! Tested-by: Xiao Guangrong <xiaoguangrong@...fujitsu.com> -- 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/
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