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Date:	Mon, 5 Jan 2015 08:52:30 -0600 (CST)
From:	Christoph Lameter <>
To:	Joonsoo Kim <>
cc:	Andrew Morton <>,
	Pekka Enberg <>,
	David Rientjes <>,,,
	Jesper Dangaard Brouer <>,, Thomas Gleixner <>
Subject: Re: [PATCH 1/2] mm/slub: optimize alloc/free fastpath by removing
 preemption on/off

On Mon, 5 Jan 2015, Joonsoo Kim wrote:

> Now, I reach the solution to remove preempt enable/disable in the fastpath.
> If tid is matched with kmem_cache_cpu's tid after tid and kmem_cache_cpu
> are retrieved by separate this_cpu operation, it means that they are
> retrieved on the same cpu. If not matched, we just have to retry it.

Acked-by: Christoph Lameter <>
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