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Re: [RFC PATCH 01/15] nohz_task: New mask for cpus having nohz task

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From: Lai Jiangshan
Subject: Re: [RFC PATCH 01/15] nohz_task: New mask for cpus having nohz task
Date: Friday, December 24, 2010 - 1:00 am

On 12/20/2010 11:24 PM, Frederic Weisbecker wrote:

Why it depends on SMP?

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[RFC PATCH 00/15] Nohz task support, Frederic Weisbecker, (Mon Dec 20, 8:24 am)
[RFC PATCH 01/15] nohz_task: New mask for cpus having nohz ..., Frederic Weisbecker, (Mon Dec 20, 8:24 am)
[RFC PATCH 02/15] nohz_task: Avoid nohz task cpu as non-id ..., Frederic Weisbecker, (Mon Dec 20, 8:24 am)
[RFC PATCH 03/15] nohz_task: Make tick stop and restart ca ..., Frederic Weisbecker, (Mon Dec 20, 8:24 am)
[RFC PATCH 04/15] nohz_task: Stop the tick when the nohz t ..., Frederic Weisbecker, (Mon Dec 20, 8:24 am)
[RFC PATCH 05/15] nohz_task: Restart the tick when another ..., Frederic Weisbecker, (Mon Dec 20, 8:24 am)
[RFC PATCH 06/15] nohz_task: Keep the tick if rcu needs it, Frederic Weisbecker, (Mon Dec 20, 8:24 am)
[RFC PATCH 07/15] nohz_task: Restart tick when RCU forces ..., Frederic Weisbecker, (Mon Dec 20, 8:24 am)
[RFC PATCH 08/15] smp: Don't warn if irq are disabled but ..., Frederic Weisbecker, (Mon Dec 20, 8:24 am)
[RFC PATCH 09/15] rcu: Make rcu_enter,exit_nohz() callable ..., Frederic Weisbecker, (Mon Dec 20, 8:24 am)
[RFC PATCH 10/15] nohz_task: Enter in extended quiescent s ..., Frederic Weisbecker, (Mon Dec 20, 8:24 am)
[RFC PATCH 11/15] x86: Nohz task support, Frederic Weisbecker, (Mon Dec 20, 8:24 am)
[RFC PATCH 12/15] clocksource: Ignore nohz task cpu in clo ..., Frederic Weisbecker, (Mon Dec 20, 8:24 am)
[RFC PATCH 13/15] sched: Protect nohz task cpu affinity, Frederic Weisbecker, (Mon Dec 20, 8:24 am)
[RFC PATCH 14/15] nohz_task: Clear nohz task attribute on ..., Frederic Weisbecker, (Mon Dec 20, 8:24 am)
[RFC PATCH 15/15] nohz_task: Procfs interface, Frederic Weisbecker, (Mon Dec 20, 8:24 am)
Re: [RFC PATCH 15/15] nohz_task: Procfs interface, Peter Zijlstra, (Mon Dec 20, 8:42 am)
Re: [RFC PATCH 00/15] Nohz task support, Steven Rostedt, (Mon Dec 20, 8:44 am)
Re: [RFC PATCH 02/15] nohz_task: Avoid nohz task cpu as no ..., Peter Zijlstra, (Mon Dec 20, 8:47 am)
Re: [RFC PATCH 03/15] nohz_task: Make tick stop and restar ..., Peter Zijlstra, (Mon Dec 20, 8:48 am)
Re: [RFC PATCH 04/15] nohz_task: Stop the tick when the no ..., Peter Zijlstra, (Mon Dec 20, 8:51 am)
Re: [RFC PATCH 05/15] nohz_task: Restart the tick when ano ..., Peter Zijlstra, (Mon Dec 20, 8:53 am)
Re: [RFC PATCH 15/15] nohz_task: Procfs interface, Frederic Weisbecker, (Mon Dec 20, 8:57 am)
Re: [RFC PATCH 06/15] nohz_task: Keep the tick if rcu needs it, Peter Zijlstra, (Mon Dec 20, 8:58 am)
Re: [RFC PATCH 07/15] nohz_task: Restart tick when RCU for ..., Peter Zijlstra, (Mon Dec 20, 9:02 am)
Re: [RFC PATCH 08/15] smp: Don't warn if irq are disabled ..., Peter Zijlstra, (Mon Dec 20, 9:03 am)
Re: [RFC PATCH 02/15] nohz_task: Avoid nohz task cpu as no ..., Steven Rostedt, (Mon Dec 20, 9:06 am)
Re: [RFC PATCH 02/15] nohz_task: Avoid nohz task cpu as no ..., Peter Zijlstra, (Mon Dec 20, 9:12 am)
Re: [RFC PATCH 15/15] nohz_task: Procfs interface, Peter Zijlstra, (Mon Dec 20, 9:16 am)
Re: [RFC PATCH 10/15] nohz_task: Enter in extended quiesce ..., Peter Zijlstra, (Mon Dec 20, 9:18 am)
Re: [RFC PATCH 03/15] nohz_task: Make tick stop and restar ..., Steven Rostedt, (Mon Dec 20, 9:19 am)
Re: [RFC PATCH 11/15] x86: Nohz task support, Peter Zijlstra, (Mon Dec 20, 9:23 am)
Re: [RFC PATCH 03/15] nohz_task: Make tick stop and restar ..., Peter Zijlstra, (Mon Dec 20, 9:25 am)
Re: [RFC PATCH 12/15] clocksource: Ignore nohz task cpu in ..., Peter Zijlstra, (Mon Dec 20, 9:27 am)
Re: [RFC PATCH 13/15] sched: Protect nohz task cpu affinity, Peter Zijlstra, (Mon Dec 20, 9:28 am)
Re: [RFC PATCH 14/15] nohz_task: Clear nohz task attribute ..., Peter Zijlstra, (Mon Dec 20, 9:30 am)
Re: [RFC PATCH 00/15] Nohz task support, Peter Zijlstra, (Mon Dec 20, 9:35 am)
Re: [RFC PATCH 13/15] sched: Protect nohz task cpu affinity, Steven Rostedt, (Mon Dec 20, 10:05 am)
Re: [RFC PATCH 00/15] Nohz task support, Frederic Weisbecker, (Mon Dec 20, 4:33 pm)
Re: [RFC PATCH 04/15] nohz_task: Stop the tick when the no ..., Frederic Weisbecker, (Mon Dec 20, 4:37 pm)
Re: [RFC PATCH 05/15] nohz_task: Restart the tick when ano ..., Frederic Weisbecker, (Mon Dec 20, 4:39 pm)
Re: [RFC PATCH 06/15] nohz_task: Keep the tick if rcu needs it, Frederic Weisbecker, (Mon Dec 20, 4:49 pm)
Re: [RFC PATCH 07/15] nohz_task: Restart tick when RCU for ..., Frederic Weisbecker, (Mon Dec 20, 4:52 pm)
Re: [RFC PATCH 08/15] smp: Don't warn if irq are disabled ..., Frederic Weisbecker, (Mon Dec 20, 5:02 pm)
Re: [RFC PATCH 06/15] nohz_task: Keep the tick if rcu needs it, Jonathan Corbet, (Mon Dec 20, 5:12 pm)
Re: [RFC PATCH 02/15] nohz_task: Avoid nohz task cpu as no ..., Frederic Weisbecker, (Mon Dec 20, 5:13 pm)
Re: [RFC PATCH 02/15] nohz_task: Avoid nohz task cpu as no ..., Frederic Weisbecker, (Mon Dec 20, 5:20 pm)
Re: [RFC PATCH 15/15] nohz_task: Procfs interface, Frederic Weisbecker, (Mon Dec 20, 6:24 pm)
Re: [RFC PATCH 10/15] nohz_task: Enter in extended quiesce ..., Frederic Weisbecker, (Mon Dec 20, 6:27 pm)
Re: [RFC PATCH 11/15] x86: Nohz task support, Frederic Weisbecker, (Mon Dec 20, 6:30 pm)
Re: [RFC PATCH 03/15] nohz_task: Make tick stop and restar ..., Frederic Weisbecker, (Mon Dec 20, 6:34 pm)
Re: [RFC PATCH 00/15] Nohz task support, Steven Rostedt, (Mon Dec 20, 6:36 pm)
Re: [RFC PATCH 12/15] clocksource: Ignore nohz task cpu in ..., Frederic Weisbecker, (Mon Dec 20, 6:40 pm)
Re: [RFC PATCH 14/15] nohz_task: Clear nohz task attribute ..., Frederic Weisbecker, (Mon Dec 20, 6:48 pm)
Re: [RFC PATCH 00/15] Nohz task support, Frederic Weisbecker, (Mon Dec 20, 6:53 pm)
Re: [RFC PATCH 13/15] sched: Protect nohz task cpu affinity, Frederic Weisbecker, (Mon Dec 20, 6:55 pm)
Re: [RFC PATCH 06/15] nohz_task: Keep the tick if rcu needs it, Frederic Weisbecker, (Mon Dec 20, 7:10 pm)
Re: [RFC PATCH 00/15] Nohz task support, Frederic Weisbecker, (Mon Dec 20, 7:15 pm)
Re: [RFC PATCH 00/15] Nohz task support, Peter Zijlstra, (Tue Dec 21, 12:34 am)
Re: [RFC PATCH 04/15] nohz_task: Stop the tick when the no ..., Peter Zijlstra, (Tue Dec 21, 12:35 am)
Re: [RFC PATCH 07/15] nohz_task: Restart tick when RCU for ..., Peter Zijlstra, (Tue Dec 21, 12:41 am)
Re: [RFC PATCH 02/15] nohz_task: Avoid nohz task cpu as no ..., Peter Zijlstra, (Tue Dec 21, 12:50 am)
Re: [RFC PATCH 02/15] nohz_task: Avoid nohz task cpu as no ..., Peter Zijlstra, (Tue Dec 21, 12:51 am)
Re: [RFC PATCH 10/15] nohz_task: Enter in extended quiesce ..., Peter Zijlstra, (Tue Dec 21, 1:04 am)
Re: [RFC PATCH 11/15] x86: Nohz task support, Peter Zijlstra, (Tue Dec 21, 1:05 am)
Re: [RFC PATCH 14/15] nohz_task: Clear nohz task attribute ..., Peter Zijlstra, (Tue Dec 21, 1:07 am)
Re: [RFC PATCH 06/15] nohz_task: Keep the tick if rcu needs it, Paul E. McKenney, (Tue Dec 21, 1:10 am)
Re: [RFC PATCH 15/15] nohz_task: Procfs interface, Peter Zijlstra, (Tue Dec 21, 1:14 am)
Re: [RFC PATCH 00/15] Nohz task support, Frederic Weisbecker, (Tue Dec 21, 6:13 am)
Re: [RFC PATCH 04/15] nohz_task: Stop the tick when the no ..., Frederic Weisbecker, (Tue Dec 21, 6:22 am)
Re: [RFC PATCH 07/15] nohz_task: Restart tick when RCU for ..., Frederic Weisbecker, (Tue Dec 21, 6:28 am)
Re: [RFC PATCH 02/15] nohz_task: Avoid nohz task cpu as no ..., Frederic Weisbecker, (Tue Dec 21, 6:52 am)
Re: [RFC PATCH 00/15] Nohz task support, Avi Kivity, (Tue Dec 21, 6:56 am)
Re: [RFC PATCH 02/15] nohz_task: Avoid nohz task cpu as no ..., Frederic Weisbecker, (Tue Dec 21, 6:58 am)
Re: [RFC PATCH 15/15] nohz_task: Procfs interface, Avi Kivity, (Tue Dec 21, 7:00 am)
Re: [RFC PATCH 10/15] nohz_task: Enter in extended quiesce ..., Frederic Weisbecker, (Tue Dec 21, 7:06 am)
Re: [RFC PATCH 11/15] x86: Nohz task support, Frederic Weisbecker, (Tue Dec 21, 7:19 am)
Re: [RFC PATCH 14/15] nohz_task: Clear nohz task attribute ..., Frederic Weisbecker, (Tue Dec 21, 7:22 am)
Re: [RFC PATCH 15/15] nohz_task: Procfs interface, Frederic Weisbecker, (Tue Dec 21, 7:26 am)
Re: [RFC PATCH 04/15] nohz_task: Stop the tick when the no ..., Steven Rostedt, (Tue Dec 21, 7:34 am)
Re: [RFC PATCH 11/15] x86: Nohz task support, Frederic Weisbecker, (Tue Dec 21, 8:12 am)
Re: [RFC PATCH 04/15] nohz_task: Stop the tick when the no ..., Frederic Weisbecker, (Tue Dec 21, 8:14 am)
Re: [RFC PATCH 07/15] nohz_task: Restart tick when RCU for ..., Paul E. McKenney, (Tue Dec 21, 8:35 am)
Re: [RFC PATCH 00/15] Nohz task support, Frederic Weisbecker, (Tue Dec 21, 10:01 am)
Re: [RFC PATCH 15/15] nohz_task: Procfs interface, Frederic Weisbecker, (Tue Dec 21, 10:05 am)
Re: [RFC PATCH 15/15] nohz_task: Procfs interface, Avi Kivity, (Tue Dec 21, 11:17 am)
Re: [RFC PATCH 09/15] rcu: Make rcu_enter,exit_nohz() call ..., Paul E. McKenney, (Tue Dec 21, 12:26 pm)
Re: [RFC PATCH 09/15] rcu: Make rcu_enter,exit_nohz() call ..., Frederic Weisbecker, (Tue Dec 21, 12:27 pm)
Re: [RFC PATCH 10/15] nohz_task: Enter in extended quiesce ..., Paul E. McKenney, (Tue Dec 21, 12:28 pm)
Re: [RFC PATCH 15/15] nohz_task: Procfs interface, Frederic Weisbecker, (Tue Dec 21, 2:08 pm)
Re: [RFC PATCH 10/15] nohz_task: Enter in extended quiesce ..., Frederic Weisbecker, (Tue Dec 21, 2:49 pm)
Re: [RFC PATCH 10/15] nohz_task: Enter in extended quiesce ..., Paul E. McKenney, (Tue Dec 21, 7:20 pm)
Re: [RFC PATCH 15/15] nohz_task: Procfs interface, Avi Kivity, (Wed Dec 22, 2:22 am)
Re: [RFC PATCH 15/15] nohz_task: Procfs interface, Peter Zijlstra, (Wed Dec 22, 2:51 am)
Re: [RFC PATCH 15/15] nohz_task: Procfs interface, Frederic Weisbecker, (Wed Dec 22, 1:41 pm)
Re: [RFC PATCH 01/15] nohz_task: New mask for cpus having ..., Lai Jiangshan, (Fri Dec 24, 1:00 am)
Re: [RFC PATCH 01/15] nohz_task: New mask for cpus having ..., Dario Faggioli, (Fri Dec 24, 1:19 am)
Re: [RFC PATCH 01/15] nohz_task: New mask for cpus having ..., Frederic Weisbecker, (Fri Dec 24, 5:29 am)