linux-kernel - Re: [RFC 0/4] [RFC] slub: Fastpath optimization (especially for RT)

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Date:	Fri, 24 Oct 2014 09:02:18 -0500 (CDT)
From:	Christoph Lameter <cl@...ux.com>
To:	Joonsoo Kim <iamjoonsoo.kim@....com>
cc:	akpm@...uxfoundation.org, rostedt@...dmis.org,
	linux-kernel@...r.kernel.org, Thomas Gleixner <tglx@...utronix.de>,
	linux-mm@...ck.org, penberg@...nel.org, iamjoonsoo@....com
Subject: Re: [RFC 0/4] [RFC] slub: Fastpath optimization (especially for
 RT)

On Fri, 24 Oct 2014, Joonsoo Kim wrote:

> In this case, object from cpu1's cpu_cache should be
> different with cpu0's, so allocation would be failed.

That is true for most object pointers unless the value is NULL. Which it
can be. But if this is the only case then the second patch + your approach
would work too.


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