linux-kernel - Re: [RT LATENCY] 249 microsecond latency caused by slub's unfreeze

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Date:	Wed, 10 Apr 2013 14:00:31 +0000
From:	Christoph Lameter <cl@...ux.com>
To:	Joonsoo Kim <iamjoonsoo.kim@....com>
cc:	Pekka Enberg <penberg@...nel.org>,
	Steven Rostedt <rostedt@...dmis.org>,
	Paul Gortmaker <paul.gortmaker@...driver.com>,
	LKML <linux-kernel@...r.kernel.org>,
	RT <linux-rt-users@...r.kernel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Clark Williams <clark@...hat.com>
Subject: Re: [RT LATENCY] 249 microsecond latency caused by slub's
 unfreeze_partials() code.

On Wed, 10 Apr 2013, Joonsoo Kim wrote:

> > Christoph, Joonsoo, comments?
>
> Steven's comment is reasonable to me.
>
> If there is no objection from Christoph,
> let's drop a patch in which I implement Christoph's idea.

Fine with me.

I do not like passing a reference just because we have to
return an additional counter. Adds a lot of overhead.


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