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From: Joe Korty <joe.korty@ccur.com>
To: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] An RCU for SMP with a single CPU garbage collector
Date: Mon, 7 Mar 2011 17:51:10 -0500	[thread overview]
Message-ID: <20110307225110.GA19414@tsunami.ccur.com> (raw)
In-Reply-To: <20110307211613.GA26455@tsunami.ccur.com>

On Mon, Mar 07, 2011 at 04:16:13PM -0500, Joe Korty wrote:
> On Mon, Mar 07, 2011 at 04:01:57PM -0500, Paul E. McKenney wrote:
>> But I would really prefer leveraging the existing RCU implementations
>> to the extent possible.  Are the user-dedicated CPUs able to invoke
>> system calls?  If so, something like Frederic's approach should permit
>> the existing RCU implementations to operate normally.  If not, what is
>> doing the RCU read-side critical sections on the dedicated CPUs?
> 
> I thought about the system call approach but rejected it.
> Some (maybe many) customers needing dedicated CPUs will
> have apps that never make any system calls at all.

Hi Paul,
Thinking about it some more, the tap-into-syscall approach might
work in my implementation, in which case the tap-into-preempt-enable
code could go away.

Nice thing about RCU, the algorithms are infinitely mallable :)

Joe

  parent reply	other threads:[~2011-03-07 22:51 UTC|newest]

Thread overview: 61+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-11-04 23:21 dyntick-hpc and RCU Paul E. McKenney
2010-11-05  5:27 ` Frederic Weisbecker
2010-11-05  5:38   ` Frederic Weisbecker
2010-11-05 15:06     ` Paul E. McKenney
2010-11-05 20:06       ` Dhaval Giani
2010-11-05 15:04   ` Paul E. McKenney
2010-11-08 14:10     ` Frederic Weisbecker
2010-11-05 21:00 ` [PATCH] a local-timer-free version of RCU Joe Korty
2010-11-06 19:28   ` Paul E. McKenney
2010-11-06 19:34     ` Mathieu Desnoyers
2010-11-06 19:42       ` Mathieu Desnoyers
2010-11-06 19:44         ` Paul E. McKenney
2010-11-08  2:11     ` Udo A. Steinberg
2010-11-08  2:19       ` Udo A. Steinberg
2010-11-08  2:54         ` Paul E. McKenney
2010-11-08 15:32           ` Frederic Weisbecker
2010-11-08 19:38             ` Paul E. McKenney
2010-11-08 20:40               ` Frederic Weisbecker
2010-11-10 18:08                 ` Paul E. McKenney
2010-11-08 15:06     ` Frederic Weisbecker
2010-11-08 15:18       ` Joe Korty
2010-11-08 19:50         ` Paul E. McKenney
2010-11-08 19:49       ` Paul E. McKenney
2010-11-08 20:51         ` Frederic Weisbecker
2010-11-06 20:03   ` Mathieu Desnoyers
2010-11-09  9:22   ` Lai Jiangshan
2010-11-10 15:54     ` Frederic Weisbecker
2010-11-10 17:31       ` Peter Zijlstra
2010-11-10 17:45         ` Frederic Weisbecker
2010-11-11  4:19         ` Paul E. McKenney
2010-11-13 22:30           ` Frederic Weisbecker
2010-11-16  1:28             ` Paul E. McKenney
2010-11-16 13:52               ` Frederic Weisbecker
2010-11-16 15:51                 ` Paul E. McKenney
2010-11-17  0:52                   ` Frederic Weisbecker
2010-11-17  1:25                     ` Paul E. McKenney
2011-03-07 20:31                     ` [PATCH] An RCU for SMP with a single CPU garbage collector Joe Korty
     [not found]                       ` <20110307210157.GG3104@linux.vnet.ibm.com>
2011-03-07 21:16                         ` Joe Korty
2011-03-07 21:33                           ` Joe Korty
2011-03-07 22:51                           ` Joe Korty [this message]
2011-03-08  9:07                             ` Paul E. McKenney
2011-03-08 15:57                               ` Joe Korty
2011-03-08 22:53                                 ` Joe Korty
2011-03-10  0:30                                   ` Paul E. McKenney
2011-03-10  0:28                                 ` Paul E. McKenney
2011-03-09 22:29                           ` Frederic Weisbecker
2011-03-09 22:15                       ` [PATCH 2/4] jrcu: tap rcu_read_unlock Joe Korty
2011-03-10  0:34                         ` Paul E. McKenney
2011-03-10 19:50                           ` JRCU Theory of Operation Joe Korty
2011-03-12 14:36                             ` Paul E. McKenney
2011-03-13  0:43                               ` Joe Korty
2011-03-13  5:56                                 ` Paul E. McKenney
2011-03-13 23:53                                   ` Joe Korty
2011-03-14  0:50                                     ` Paul E. McKenney
2011-03-14  0:55                                       ` Josh Triplett
2011-03-09 22:16                       ` [PATCH 3/4] jrcu: tap might_resched() Joe Korty
2011-03-09 22:17                       ` [PATCH 4/4] jrcu: add new stat to /sys/kernel/debug/rcu/rcudata Joe Korty
2011-03-09 22:19                       ` [PATCH 1/4] jrcu: remove preempt_enable() tap [resend] Joe Korty
2011-03-12 14:36                       ` [PATCH] An RCU for SMP with a single CPU garbage collector Paul E. McKenney
2011-03-13  1:25                         ` Joe Korty
2011-03-13  6:09                           ` Paul E. McKenney

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