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Re: [PATCH RFC 3/9] RCU: Preemptible RCU

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From: Steven Rostedt <rostedt@...>
To: Paul E. McKenney <paulmck@...>
Cc: <linux-kernel@...>, <linux-rt-users@...>, <mingo@...>, <akpm@...>, <dipankar@...>, <josht@...>, <tytso@...>, <dvhltc@...>, <tglx@...>, <a.p.zijlstra@...>, <bunk@...>, <ego@...>, <oleg@...>, <srostedt@...>
Subject: Re: [PATCH RFC 3/9] RCU: Preemptible RCU
Date: Friday, September 21, 2007 - 9:19 pm

--
On Fri, 21 Sep 2007, Paul E. McKenney wrote:

This still frightens the hell out of me. Going through 15 states and
failing. Seems the CPU is holding off writes for a long long time. That
means we flipped the counter 4 times, and that still wasn't good enough?

Maybe I'll boot up my powerbook to see if it has the same issues.

Well, I'm still finishing up on moving into my new house, so I wont be
available this weekend.

Thanks,

-- Steve

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Messages in current thread:
[PATCH RFC 0/9] RCU: Preemptible RCU, Paul E. McKenney, (Mon Sep 10, 2:30 pm)
Re: [PATCH RFC 0/9] RCU: Preemptible RCU, Ingo Molnar, (Mon Sep 10, 2:44 pm)
[PATCH RFC 9/9] RCU: preemptible documentation and comment c..., Paul E. McKenney, (Mon Sep 10, 2:42 pm)
[PATCH RFC 8/9] RCU: Make RCU priority boosting consume less..., Paul E. McKenney, (Mon Sep 10, 2:41 pm)
[PATCH RFC 7/9] RCU: rcutorture testing for RCU priority boo..., Paul E. McKenney, (Mon Sep 10, 2:39 pm)
[PATCH RFC 6/9] RCU priority boosting for preemptible RCU, Paul E. McKenney, (Mon Sep 10, 2:39 pm)
Re: [PATCH RFC 6/9] RCU priority boosting for preemptible RCU, Gautham R Shenoy, (Fri Oct 5, 7:46 am)
Re: [PATCH RFC 6/9] RCU priority boosting for preemptible RCU, Steven Rostedt, (Fri Oct 5, 8:24 am)
Re: [PATCH RFC 6/9] RCU priority boosting for preemptible RCU, Gautham R Shenoy, (Fri Oct 5, 9:21 am)
Re: [PATCH RFC 6/9] RCU priority boosting for preemptible RCU, Paul E. McKenney, (Fri Oct 5, 10:07 am)
Re: [PATCH RFC 6/9] RCU priority boosting for preemptible RCU, Gautham R Shenoy, (Fri Sep 28, 6:56 pm)
Re: [PATCH RFC 6/9] RCU priority boosting for preemptible RCU, Steven Rostedt, (Fri Sep 28, 7:05 pm)
Re: [PATCH RFC 6/9] RCU priority boosting for preemptible RCU, Paul E. McKenney, (Sat Sep 29, 11:11 pm)
[PATCH RFC 5/9] RCU: CPU hotplug support for preemptible RCU, Paul E. McKenney, (Mon Sep 10, 2:36 pm)
Re: [PATCH RFC 5/9] RCU: CPU hotplug support for preemptible..., Oleg Nesterov, (Sun Sep 30, 12:38 pm)
Re: [PATCH RFC 5/9] RCU: CPU hotplug support for preemptible..., Paul E. McKenney, (Sun Sep 30, 9:41 pm)
[PATCH RFC 4/9] RCU: synchronize_sched() workaround for CPU ..., Paul E. McKenney, (Mon Sep 10, 2:35 pm)
[PATCH RFC 3/9] RCU: Preemptible RCU, Paul E. McKenney, (Mon Sep 10, 2:34 pm)
Re: [PATCH RFC 3/9] RCU: Preemptible RCU, Oleg Nesterov, (Sun Sep 23, 1:38 pm)
Re: [PATCH RFC 3/9] RCU: Preemptible RCU, Paul E. McKenney, (Sun Sep 23, 8:15 pm)
Re: [PATCH RFC 3/9] RCU: Preemptible RCU, Oleg Nesterov, (Wed Sep 26, 11:13 am)
Re: [PATCH RFC 3/9] RCU: Preemptible RCU, Paul E. McKenney, (Thu Sep 27, 11:46 am)
Re: [PATCH RFC 3/9] RCU: Preemptible RCU, Oleg Nesterov, (Fri Sep 28, 10:47 am)
Re: [PATCH RFC 3/9] RCU: Preemptible RCU, Paul E. McKenney, (Fri Sep 28, 2:57 pm)
Re: [PATCH RFC 3/9] RCU: Preemptible RCU, Oleg Nesterov, (Sun Sep 30, 12:31 pm)
Re: [PATCH RFC 3/9] RCU: Preemptible RCU, Paul E. McKenney, (Sun Sep 30, 9:20 pm)
Re: [PATCH RFC 3/9] RCU: Preemptible RCU, Davide Libenzi, (Sun Sep 30, 7:02 pm)
Re: [PATCH RFC 3/9] RCU: Preemptible RCU, Paul E. McKenney, (Sun Sep 30, 9:37 pm)
Re: [PATCH RFC 3/9] RCU: Preemptible RCU, Oleg Nesterov, (Tue Oct 2, 2:02 pm)
Re: [PATCH RFC 3/9] RCU: Preemptible RCU, Davide Libenzi, (Mon Oct 1, 2:44 pm)
Re: [PATCH RFC 3/9] RCU: Preemptible RCU, Paul E. McKenney, (Mon Oct 1, 3:21 pm)
Re: [PATCH RFC 3/9] RCU: Preemptible RCU, Davide Libenzi, (Mon Oct 1, 6:09 pm)
Re: [PATCH RFC 3/9] RCU: Preemptible RCU, Paul E. McKenney, (Mon Oct 1, 6:24 pm)
Re: [PATCH RFC 3/9] RCU: Preemptible RCU, Steven Rostedt, (Fri Sep 21, 11:20 am)
Re: [PATCH RFC 3/9] RCU: Preemptible RCU, Paul E. McKenney, (Fri Sep 21, 7:03 pm)
Re: [PATCH RFC 3/9] RCU: Preemptible RCU, Paul E. McKenney, (Fri Sep 21, 8:32 pm)
Re: [PATCH RFC 3/9] RCU: Preemptible RCU, Steven Rostedt, (Fri Sep 21, 9:19 pm)
Re: [PATCH RFC 3/9] RCU: Preemptible RCU, Paul E. McKenney, (Fri Sep 21, 9:43 pm)
Re: [PATCH RFC 3/9] RCU: Preemptible RCU, Steven Rostedt, (Fri Sep 21, 10:56 pm)
Re: [PATCH RFC 3/9] RCU: Preemptible RCU, Paul E. McKenney, (Sat Sep 22, 12:10 am)
Re: [PATCH RFC 3/9] RCU: Preemptible RCU, Steven Rostedt, (Fri Sep 21, 10:40 am)
Re: [PATCH RFC 3/9] RCU: Preemptible RCU, Paul E. McKenney, (Fri Sep 21, 8:26 pm)
Re: [PATCH RFC 3/9] RCU: Preemptible RCU, Steven Rostedt, (Fri Sep 21, 9:15 pm)
Re: [PATCH RFC 3/9] RCU: Preemptible RCU, Paul E. McKenney, (Fri Sep 21, 9:53 pm)
Re: [PATCH RFC 3/9] RCU: Preemptible RCU, Steven Rostedt, (Fri Sep 21, 11:15 pm)
Re: [PATCH RFC 3/9] RCU: Preemptible RCU, Paul E. McKenney, (Sat Sep 22, 12:07 am)
Re: [PATCH RFC 3/9] RCU: Preemptible RCU, Peter Zijlstra, (Fri Sep 21, 11:46 am)
Re: [PATCH RFC 3/9] RCU: Preemptible RCU, Steven Rostedt, (Fri Sep 21, 6:31 pm)
Re: [PATCH RFC 3/9] RCU: Preemptible RCU, Paul E. McKenney, (Fri Sep 21, 6:44 pm)
Re: [PATCH RFC 3/9] RCU: Preemptible RCU, Steven Rostedt, (Fri Sep 21, 7:23 pm)
Re: [PATCH RFC 3/9] RCU: Preemptible RCU, Paul E. McKenney, (Fri Sep 21, 7:44 pm)
Re: [PATCH RFC 3/9] RCU: Preemptible RCU, Paul E. McKenney, (Fri Sep 21, 6:06 pm)
Re: [PATCH RFC 3/9] RCU: Preemptible RCU, Steven Rostedt, (Fri Sep 21, 12:17 am)
Re: [PATCH RFC 3/9] RCU: Preemptible RCU, Dipankar Sarma, (Fri Sep 21, 1:56 am)
Re: [PATCH RFC 3/9] RCU: Preemptible RCU, Paul E. McKenney, (Fri Sep 21, 1:50 am)
[PATCH RFC 1/9] RCU: Split API to permit multiple RCU implem..., Paul E. McKenney, (Mon Sep 10, 2:32 pm)
Re: [PATCH RFC 1/9] RCU: Split API to permit multiple RCU im..., Steven Rostedt, (Fri Sep 21, 12:14 am)
[PATCH RFC 2/9] RCU: Fix barriers, Paul E. McKenney, (Mon Sep 10, 2:33 pm)