linux-kernel - Re: [PATCH RFC 0/41] RCU commits for 3.4

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Message-ID: <87obtf66bj.fsf@ti.com>
Date:	Fri, 03 Feb 2012 11:54:40 -0800
From:	Kevin Hilman <khilman@...com>
To:	paulmck@...ux.vnet.ibm.com
Cc:	linux-kernel@...r.kernel.org, mingo@...e.hu, laijs@...fujitsu.com,
	dipankar@...ibm.com, akpm@...ux-foundation.org,
	mathieu.desnoyers@...ymtl.ca, josh@...htriplett.org,
	niv@...ibm.com, tglx@...utronix.de, peterz@...radead.org,
	rostedt@...dmis.org, Valdis.Kletnieks@...edu, dhowells@...hat.com,
	eric.dumazet@...il.com, darren@...art.com, fweisbec@...il.com,
	patches@...aro.org
Subject: Re: [PATCH RFC 0/41] RCU commits for 3.4

"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com> writes:

> On Thu, Feb 02, 2012 at 02:47:14PM -0800, Kevin Hilman wrote:
>> Hi Paul,
>> 
>> "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com> writes:
>> 
>> > This patchset makes RCU more aggressive about entering dyntick-idle mode
>> > in order to improve energy efficiency, 
>> 
>> I gave this series a spin on an ARM/SMP platform (OMAP4) and the boot
>> hung (tail end of boot log below.)  I then realized that had isolcpus=1
>> on the cmdline from a previous experiment.  Removing isolcpus from the
>> cmdline got me back to a working boot.
>> 
>> IIRC, some want to remove isolcpus, so I'm not sure if it's expected to
>> work with your series, but thought you'd want to know.
>
> Not expected behavior, thank you for testing!
>
> Could you please share your .config?

Sure, attached.

Kevin


Download attachment "dot.config.gz" of type "application/octet-stream" (16375 bytes)