linux-kernel - Re: [PATCH RFC tip/core/rcu 1/2] rcu: Rationalize kthread spawning

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Message-ID: <53C74ABB.5060006@gmail.com>
Date:	Thu, 17 Jul 2014 00:02:03 -0400
From:	Pranith Kumar <bobby.prani@...il.com>
To:	Sasha Levin <sasha.levin@...cle.com>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	linux-kernel@...r.kernel.org
CC:	mingo@...nel.org, laijs@...fujitsu.com, dipankar@...ibm.com,
	akpm@...ux-foundation.org, mathieu.desnoyers@...icios.com,
	josh@...htriplett.org, niv@...ibm.com, tglx@...utronix.de,
	peterz@...radead.org, rostedt@...dmis.org, dhowells@...hat.com
Subject: Re: [PATCH RFC tip/core/rcu 1/2] rcu: Rationalize kthread spawning

On 07/16/2014 10:57 PM, Sasha Levin wrote:
> On 07/14/2014 06:06 AM, Paul E. McKenney wrote:
>> From: "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
>>
>> Currently, RCU spawns kthreads from several different early_initcall()
>> functions.  Although this has served RCU well for quite some time,
>> as more kthreads are added a more deterministic approach is required.
>> This commit therefore causes all of RCU's early-boot kthreads to be
>> spawned from a single early_initcall() function.
>>
>> Signed-off-by: Paul E. McKenney <paulmck@...ux.vnet.ibm.com>
> 
> Hey Paul,
> 
> I've updated to today's -next and my VM started hanging on boot. Bisect
> pointed out this patch.
> 
> I don't have any further info right now, but can provide whatever you'll
> find useful.

Hi Sasha,

Could you attach the config file which is failing for a start? 

Thanks,
--
Pranith

> 
> 
> Thanks,
> Sasha
> 

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