From: Stefan Richter <stefanr@s5r6.in-berlin.de>
To: paulmck@linux.vnet.ibm.com
Cc: Ingo Molnar <mingo@elte.hu>, linux-kernel@vger.kernel.org
Subject: Re: preemptible RCU bug (was Re: [git pull] scheduler changes for v2.6.25)
Date: Sun, 27 Jan 2008 12:16:49 +0100 [thread overview]
Message-ID: <479C6821.1000405@s5r6.in-berlin.de> (raw)
In-Reply-To: <20080127110559.GB28315@linux.vnet.ibm.com>
Paul E. McKenney wrote:
> --- linux-2.6.24-rt1/kernel/Kconfig.preempt 2008-01-27 02:52:36.000000000 -0800
> +++ linux-2.6.24-rt1-RCUconfighelp/kernel/Kconfig.preempt 2008-01-27 03:05:22.000000000 -0800
> @@ -131,6 +131,14 @@ choice
> prompt "RCU implementation type:"
> default PREEMPT_RCU if PREEMPT_RT
> default CLASSIC_RCU
> + help
> + This allows you to choose either the classic RCU implementation
> + that is designed for best read-side performance on non-realtime
> + systems, or the preemptible RCU implementation for best latency
> + on realtime systems. Note that some kernel preemption modes
> + will restrict your choice.
> +
> + Select the default if you are unsure.
Looks good to me. Serves those people who want to be informed as well
as those who want to be comforted. :-) Thanks,
--
Stefan Richter
-=====-==--- ---= ==-==
http://arcgraph.de/sr/
next prev parent reply other threads:[~2008-01-27 11:17 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-01-25 20:37 [git pull] scheduler changes for v2.6.25 Ingo Molnar
2008-01-26 19:19 ` preemptible RCU bug (was Re: [git pull] scheduler changes for v2.6.25) Stefan Richter
2008-01-27 11:05 ` Paul E. McKenney
2008-01-27 11:16 ` Stefan Richter [this message]
2008-01-27 12:26 ` Ingo Molnar
2008-01-27 23:48 ` Paul E. McKenney
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