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From: Sasha Levin <levinsasha928@gmail.com>
To: Ingo Molnar <mingo@elte.hu>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>,
	Pekka Enberg <penberg@kernel.org>, Avi Kivity <avi@redhat.com>,
	john@jfloren.net, kvm@vger.kernel.org, asias.hejun@gmail.com,
	gorcunov@gmail.com, prasadjoshi124@gmail.com,
	"Paul E. McKenney" <paulmck@linux.vnet.ibm.com>,
	Phil Howard <csbetterthanjava@gmail.com>,
	rp@svcs.cs.pdx.edu
Subject: Re: RCU red-black tree (was: Re: [PATCH 4/6] kvm tools: Add rwlock wrapper)
Date: Tue, 31 May 2011 16:20:06 +0300	[thread overview]
Message-ID: <1306848006.25406.11.camel@lappy> (raw)
In-Reply-To: <20110531130923.GA13888@elte.hu>

On Tue, 2011-05-31 at 15:09 +0200, Ingo Molnar wrote:
> * Sasha Levin <levinsasha928@gmail.com> wrote:
> 
> > I've started working on converting our MMIO code to use RCU rbtree.
> 
> Well, why would we want to switch the MMIO code away from the brlock 
> right now? mmio tree reconfigurations are very, very rare.
> 
> Won't something like the qcow cache be more suitable for that? That 
> has both frequent read and write activities.

We don't have a qcow cache at the moment :)

It was either the MMIO or the ioport tree. We don't have to pull them
into our master tree either - it's mostly a proof of concept I'm doing
on a separate tree.

-- 

Sasha.


  reply	other threads:[~2011-05-31 13:20 UTC|newest]

Thread overview: 82+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-05-26 14:25 [PATCH 1/6] kvm tools: Prevent double assignment of guest memory info Sasha Levin
2011-05-26 14:25 ` [PATCH 2/6] kvm tools: Exit VCPU thread only when SIGKVMEXIT is received Sasha Levin
2011-05-26 14:25 ` [PATCH 3/6] kvm tools: Protect IRQ allocations by a mutex Sasha Levin
2011-05-26 14:25 ` [PATCH 4/6] kvm tools: Add rwlock wrapper Sasha Levin
2011-05-26 16:02   ` Pekka Enberg
2011-05-26 16:19     ` Sasha Levin
2011-05-26 18:05       ` Ingo Molnar
2011-05-26 18:11         ` Avi Kivity
2011-05-26 18:21           ` Pekka Enberg
2011-05-26 18:57             ` Sasha Levin
2011-05-26 23:09               ` Mathieu Desnoyers
2011-05-27 10:19                 ` Sasha Levin
2011-05-27 10:36                   ` Ingo Molnar
2011-05-27 15:52                     ` Sasha Levin
2011-05-27 17:10                       ` Ingo Molnar
2011-05-27 20:19                         ` Sasha Levin
2011-05-28 15:24                           ` Ingo Molnar
2011-05-28 16:44                             ` Paul E. McKenney
2011-05-28 19:45                             ` Sasha Levin
2011-05-29  6:47                               ` Avi Kivity
2011-05-29  7:19                                 ` Ingo Molnar
2011-05-29 15:31                                   ` Paul E. McKenney
2011-05-29 15:51                                     ` Paul E. McKenney
2011-05-29 19:54                                       ` Ingo Molnar
2011-05-30  3:12                                         ` Paul E. McKenney
2011-05-29 16:22                                     ` Sasha Levin
2011-05-27 13:14                   ` Mathieu Desnoyers
2011-05-29 17:01                     ` RCU red-black tree (was: Re: [PATCH 4/6] kvm tools: Add rwlock wrapper) Mathieu Desnoyers
2011-05-29 17:48                       ` Sasha Levin
2011-05-30  2:54                         ` Mathieu Desnoyers
2011-05-30  6:07                           ` Sasha Levin
2011-05-30 11:30                             ` Mathieu Desnoyers
2011-05-30 17:38                             ` Mathieu Desnoyers
2011-05-30 17:50                               ` Mathieu Desnoyers
2011-05-30 17:52                               ` Sasha Levin
2011-05-30 18:57                                 ` Mathieu Desnoyers
2011-05-30 19:11                                   ` Sasha Levin
2011-05-31 13:05                                   ` Sasha Levin
2011-05-31 13:09                                     ` Ingo Molnar
2011-05-31 13:20                                       ` Sasha Levin [this message]
2011-05-31 15:25                                         ` Ingo Molnar
2011-05-31 19:09                                           ` Prasad Joshi
2011-05-31 19:31                                             ` Ingo Molnar
2011-06-02 14:55                                     ` Mathieu Desnoyers
2011-05-30  3:38                       ` Paul E. McKenney
2011-05-30 11:18                         ` Mathieu Desnoyers
2011-05-26 20:25             ` [PATCH 4/6] kvm tools: Add rwlock wrapper Ingo Molnar
2011-05-26 23:05               ` Mathieu Desnoyers
2011-05-27  0:58                 ` Paul E. McKenney
2011-05-27  9:12                   ` Ingo Molnar
2011-05-27 12:48                     ` Mathieu Desnoyers
2011-05-27 13:19                       ` Ingo Molnar
2011-05-27 13:29                         ` Mathieu Desnoyers
2011-05-27 13:36                           ` Ingo Molnar
2011-05-27 17:22                     ` Paul E. McKenney
2011-05-27 10:25                 ` Ingo Molnar
2011-05-27 11:07                   ` Ingo Molnar
2011-05-27 11:10                     ` Ingo Molnar
2011-05-27 11:24                       ` Ingo Molnar
2011-05-27 14:18                         ` Mathieu Desnoyers
2011-05-27 14:11                     ` Mathieu Desnoyers
2011-05-28 18:12                     ` Avi Kivity
2011-05-28 18:32                       ` Ingo Molnar
2011-05-29  6:41                         ` Avi Kivity
2011-05-29  7:35                           ` Ingo Molnar
2011-05-29  7:54                             ` Avi Kivity
2011-05-29 12:37                               ` Ingo Molnar
2011-05-29 12:48                                 ` Avi Kivity
2011-05-29 14:27                                   ` Ingo Molnar
2011-05-29 15:00                                     ` Avi Kivity
2011-05-29 15:38                                       ` Paul E. McKenney
2011-05-29 19:33                                         ` Ingo Molnar
2011-05-30  3:07                                           ` Paul E. McKenney
2011-05-30  8:12                                             ` Ingo Molnar
2011-05-27 13:22                   ` Mathieu Desnoyers
2011-05-27 13:31                     ` Ingo Molnar
2011-05-28 18:14                       ` Avi Kivity
2011-05-27 13:07                 ` Ingo Molnar
2011-05-26 14:25 ` [PATCH 5/6] kvm tools: Protect MMIO tree by rwsem Sasha Levin
2011-05-26 14:25 ` [PATCH 6/6] kvm tools: Protect IOPORT " Sasha Levin
2011-05-26 16:01   ` Pekka Enberg
2011-05-26 16:19     ` Sasha Levin

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