Re: [PATCH, RFC] v7 scalable classic RCU implementation

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From: Manfred Spraul

Subject: Re: [PATCH, RFC] v7 scalable classic RCU implementation

Date: Wednesday, October 22, 2008 - 11:41 am

Paul E. McKenney wrote:
quoted text> Only once per such CPU every grace period -- seems in the noise to me.
> But I should revisit, as I have changed things quite a bit since I
> made that decision many weeks ago.  ;-)
>
>   
Another small point:
Does your implementation support rcu_check_callbacks() with cpu != 
smp_processor_id()?
I don't think my locking would support it properly.
Thus:
- cpu != smp_processor_id() doesn't work.
- stack space for a useless parameter.
- the explicit cpu parameter prevents the rcu code from using get_cpu_var().

What about modifying the rcu_check_callbacks() prototype? I'd propose to 
remove the cpu parameter.

--
    Manfred
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Messages in current thread:

[PATCH, RFC, tip/core/rcu] scalable classic RCU implementation, Paul E. McKenney, (Thu Aug 21, 4:43 pm)

Re: [PATCH, RFC, tip/core/rcu] scalable classic RCU implem ..., Ingo Molnar, (Thu Aug 21, 9:37 pm)

Re: [PATCH, RFC, tip/core/rcu] scalable classic RCU implem ..., Paul E. McKenney, (Fri Aug 22, 6:47 am)

Re: [PATCH, RFC, tip/core/rcu] scalable classic RCU implem ..., Paul E. McKenney, (Fri Aug 22, 10:22 am)

Re: [PATCH, RFC, tip/core/rcu] scalable classic RCU implem ..., Josh Triplett, (Fri Aug 22, 11:16 am)

Re: [PATCH, RFC, tip/core/rcu] scalable classic RCU implem ..., Josh Triplett, (Fri Aug 22, 4:29 pm)

Re: [PATCH, RFC, tip/core/rcu] scalable classic RCU implem ..., Paul E. McKenney, (Fri Aug 22, 6:53 pm)

Re: [PATCH, RFC, tip/core/rcu] scalable classic RCU implem ..., Ingo Molnar, (Sat Aug 23, 9:07 am)

Re: [PATCH, RFC, tip/core/rcu] scalable classic RCU implem ..., Paul E. McKenney, (Sat Aug 23, 7:44 pm)

Re: [PATCH, RFC, tip/core/rcu] scalable classic RCU implem ..., Manfred Spraul, (Sun Aug 24, 1:08 am)

Re: [PATCH, RFC, tip/core/rcu] scalable classic RCU implem ..., Paul E. McKenney, (Sun Aug 24, 9:32 am)

Re: [PATCH, RFC, tip/core/rcu] scalable classic RCU implem ..., Manfred Spraul, (Sun Aug 24, 11:25 am)

Re: [PATCH, RFC, tip/core/rcu] scalable classic RCU implem ..., Paul E. McKenney, (Sun Aug 24, 2:19 pm)

[PATCH, RFC, tip/core/rcu] v2 scalable classic RCU impleme ..., Paul E. McKenney, (Sun Aug 24, 5:07 pm)

Re: [PATCH, RFC, tip/core/rcu] scalable classic RCU implem ..., Peter Zijlstra, (Mon Aug 25, 3:34 am)

Re: [PATCH, RFC, tip/core/rcu] scalable classic RCU implem ..., Paul E. McKenney, (Mon Aug 25, 8:16 am)

Re: [PATCH, RFC, tip/core/rcu] scalable classic RCU implem ..., Peter Zijlstra, (Mon Aug 25, 8:26 am)

Re: [PATCH, RFC, tip/core/rcu] scalable classic RCU implem ..., Josh Triplett, (Mon Aug 25, 3:02 pm)

Re: [PATCH, RFC, tip/core/rcu] scalable classic RCU implem ..., Paul E. McKenney, (Tue Aug 26, 9:05 am)

Re: [PATCH, RFC, tip/core/rcu] scalable classic RCU implem ..., Josh Triplett, (Tue Aug 26, 5:38 pm)

Re: [PATCH, RFC, tip/core/rcu] scalable classic RCU implem ..., Paul E. McKenney, (Wed Aug 27, 11:28 am)

Re: [PATCH, RFC, tip/core/rcu] scalable classic RCU implem ..., Paul E. McKenney, (Wed Aug 27, 11:34 am)

Re: [PATCH, RFC, tip/core/rcu] scalable classic RCU implem ..., Josh Triplett, (Wed Aug 27, 1:23 pm)

Re: [PATCH, RFC, tip/core/rcu] scalable classic RCU implem ..., Paul E. McKenney, (Wed Aug 27, 1:41 pm)

[PATCH, RFC, tip/core/rcu] v3 scalable classic RCU impleme ..., Paul E. McKenney, (Fri Aug 29, 5:49 pm)

Re: [PATCH, RFC, tip/core/rcu] v3 scalable classic RCU imp ..., Peter Zijlstra, (Sat Aug 30, 2:33 am)

Re: [PATCH, RFC, tip/core/rcu] v3 scalable classic RCU imp ..., Lai Jiangshan, (Sat Aug 30, 2:58 am)

Re: [PATCH, RFC, tip/core/rcu] v3 scalable classic RCU imp ..., Manfred Spraul, (Sat Aug 30, 6:32 am)

Re: [PATCH, RFC, tip/core/rcu] v3 scalable classic RCU imp ..., Paul E. McKenney, (Sat Aug 30, 7:10 am)

Re: [PATCH, RFC, tip/core/rcu] v3 scalable classic RCU imp ..., Paul E. McKenney, (Sat Aug 30, 7:29 am)

Re: [PATCH, RFC, tip/core/rcu] v3 scalable classic RCU imp ..., Paul E. McKenney, (Sat Aug 30, 7:34 am)

Re: [PATCH, RFC, tip/core/rcu] v3 scalable classic RCU imp ..., Peter Zijlstra, (Sat Aug 30, 8:40 am)

Re: [PATCH, RFC, tip/core/rcu] v3 scalable classic RCU imp ..., Paul E. McKenney, (Sat Aug 30, 12:38 pm)

Re: [PATCH, RFC, tip/core/rcu] v3 scalable classic RCU imp ..., Manfred Spraul, (Sun Aug 31, 3:58 am)

Re: [PATCH, RFC, tip/core/rcu] v3 scalable classic RCU imp ..., Paul E. McKenney, (Sun Aug 31, 10:20 am)

Re: [PATCH, RFC, tip/core/rcu] v3 scalable classic RCU imp ..., Manfred Spraul, (Sun Aug 31, 10:45 am)

Re: [PATCH, RFC, tip/core/rcu] v3 scalable classic RCU imp ..., Paul E. McKenney, (Sun Aug 31, 10:55 am)

Re: [PATCH, RFC, tip/core/rcu] v3 scalable classic RCU imp ..., Manfred Spraul, (Sun Aug 31, 11:18 am)

Re: [PATCH, RFC, tip/core/rcu] v3 scalable classic RCU imp ..., Paul E. McKenney, (Sun Aug 31, 12:23 pm)

Re: [PATCH, RFC, tip/core/rcu] v3 scalable classic RCU imp ..., Andi Kleen, (Mon Sep 1, 2:38 am)

Re: [PATCH, RFC, tip/core/rcu] v3 scalable classic RCU imp ..., Paul E. McKenney, (Mon Sep 1, 6:05 pm)

Re: [PATCH, RFC, tip/core/rcu] v3 scalable classic RCU imp ..., Andi Kleen, (Mon Sep 1, 11:18 pm)

Re: [PATCH, RFC, tip/core/rcu] v3 scalable classic RCU imp ..., Mathieu Desnoyers, (Tue Sep 2, 6:26 am)

Re: [PATCH, RFC, tip/core/rcu] v3 scalable classic RCU imp ..., Peter Zijlstra, (Tue Sep 2, 6:41 am)

Re: [PATCH, RFC, tip/core/rcu] v3 scalable classic RCU imp ..., Paul E. McKenney, (Tue Sep 2, 7:55 am)

[PATCH, RFC] v4 scalable classic RCU implementation, Paul E. McKenney, (Fri Sep 5, 8:29 am)

Re: [PATCH, RFC] v4 scalable classic RCU implementation, Andrew Morton, (Fri Sep 5, 12:33 pm)

Re: [PATCH, RFC] v4 scalable classic RCU implementation, Paul E. McKenney, (Fri Sep 5, 4:04 pm)

Re: [PATCH, RFC] v4 scalable classic RCU implementation, Andrew Morton, (Fri Sep 5, 4:52 pm)

Re: [PATCH, RFC] v4 scalable classic RCU implementation, Paul E. McKenney, (Fri Sep 5, 9:16 pm)

Re: [PATCH, RFC] v4 scalable classic RCU implementation, Manfred Spraul, (Sat Sep 6, 9:37 am)

[RFC, PATCH] Add a CPU_STARTING notifier (was: Re: [PATCH, ..., Manfred Spraul, (Sun Sep 7, 3:18 am)

Re: [RFC, PATCH] Add a CPU_STARTING notifier (was: Re: [PA ..., Andi Kleen, (Sun Sep 7, 4:07 am)

Re: [PATCH, RFC] v4 scalable classic RCU implementation, Paul E. McKenney, (Sun Sep 7, 10:25 am)

Re: [RFC, PATCH] Add a CPU_STARTING notifier (was: Re: [PA ..., Paul E. McKenney, (Sun Sep 7, 12:46 pm)

Re: [PATCH, RFC] v4 scalable classic RCU implementation, Paul E. McKenney, (Mon Sep 15, 9:02 am)

Re: [PATCH, RFC] v4 scalable classic RCU implementation, Manfred Spraul, (Tue Sep 16, 9:52 am)

Re: [PATCH, RFC] v4 scalable classic RCU implementation, Paul E. McKenney, (Tue Sep 16, 10:30 am)

Re: [PATCH, RFC] v4 scalable classic RCU implementation, Manfred Spraul, (Tue Sep 16, 10:48 am)

Re: [PATCH, RFC] v4 scalable classic RCU implementation, Paul E. McKenney, (Tue Sep 16, 11:22 am)

Re: [PATCH, RFC] v4 scalable classic RCU implementation, Manfred Spraul, (Sun Sep 21, 4:09 am)

Re: [PATCH, RFC] v4 scalable classic RCU implementation, Paul E. McKenney, (Sun Sep 21, 2:14 pm)

[PATCH, RFC] v6 scalable classic RCU implementation, Paul E. McKenney, (Tue Sep 23, 4:53 pm)

Re: [PATCH, RFC] v6 scalable classic RCU implementation, Ingo Molnar, (Thu Sep 25, 12:26 am)

Re: [PATCH, RFC] v6 scalable classic RCU implementation, Ingo Molnar, (Thu Sep 25, 12:29 am)

Re: [PATCH, RFC] v6 scalable classic RCU implementation, Paul E. McKenney, (Thu Sep 25, 7:05 am)

Re: [PATCH, RFC] v6 scalable classic RCU implementation, Paul E. McKenney, (Thu Sep 25, 7:18 am)

[PATCH, RFC] v7 scalable classic RCU implementation, Paul E. McKenney, (Fri Oct 10, 9:09 am)

Re: [PATCH, RFC] v7 scalable classic RCU implementation, Manfred Spraul, (Sun Oct 12, 8:52 am)

Re: [PATCH, RFC] v7 scalable classic RCU implementation, Paul E. McKenney, (Sun Oct 12, 3:46 pm)

Re: [PATCH, RFC] v7 scalable classic RCU implementation, Manfred Spraul, (Mon Oct 13, 11:03 am)

Re: [PATCH, RFC] v7 scalable classic RCU implementation, Paul E. McKenney, (Tue Oct 14, 6:11 pm)

Re: [PATCH, RFC] v7 scalable classic RCU implementation, Manfred Spraul, (Wed Oct 15, 1:13 am)

Re: [PATCH, RFC] v7 scalable classic RCU implementation, Paul E. McKenney, (Wed Oct 15, 8:26 am)

Re: [PATCH, RFC] v7 scalable classic RCU implementation, Gautham R Shenoy, (Fri Oct 17, 1:34 am)

Re: [PATCH, RFC] v7 scalable classic RCU implementation, Gautham R Shenoy, (Fri Oct 17, 8:35 am)

Re: [PATCH, RFC] v7 scalable classic RCU implementation, Paul E. McKenney, (Fri Oct 17, 8:43 am)

Re: [PATCH, RFC] v7 scalable classic RCU implementation, Paul E. McKenney, (Fri Oct 17, 8:46 am)

Re: [PATCH, RFC] v7 scalable classic RCU implementation, Manfred Spraul, (Wed Oct 22, 11:41 am)

Re: [PATCH, RFC] v7 scalable classic RCU implementation, Paul E. McKenney, (Wed Oct 22, 2:02 pm)

Re: [PATCH, RFC] v7 scalable classic RCU implementation, Manfred Spraul, (Wed Oct 22, 2:24 pm)

Re: [PATCH, RFC] v7 scalable classic RCU implementation, Paul E. McKenney, (Mon Oct 27, 9:45 am)

Re: [PATCH, RFC] v7 scalable classic RCU implementation, Manfred Spraul, (Mon Oct 27, 12:48 pm)

Re: [PATCH, RFC] v7 scalable classic RCU implementation, Paul E. McKenney, (Mon Oct 27, 4:52 pm)

Re: [PATCH, RFC] v7 scalable classic RCU implementation, Manfred Spraul, (Mon Oct 27, 10:30 pm)

Re: [PATCH, RFC] v7 scalable classic RCU implementation, Paul E. McKenney, (Tue Oct 28, 8:17 am)

Re: [PATCH, RFC] v7 scalable classic RCU implementation, Manfred Spraul, (Tue Oct 28, 10:21 am)

Re: [PATCH, RFC] v7 scalable classic RCU implementation, Paul E. McKenney, (Tue Oct 28, 10:35 am)

Re: [PATCH, RFC] v7 scalable classic RCU implementation, Manfred Spraul, (Sun Nov 2, 1:10 pm)

Re: [PATCH, RFC] v7 scalable classic RCU implementation, Paul E. McKenney, (Mon Nov 3, 1:33 pm)

Re: [PATCH, RFC] v7 scalable classic RCU implementation, Manfred Spraul, (Wed Nov 5, 12:48 pm)

Re: [PATCH, RFC] v7 scalable classic RCU implementation, Paul E. McKenney, (Wed Nov 5, 2:27 pm)