Re: [patch 09/10] SLUB: Do our own locking via slab_lock and slab_unlock.

• To: "Christoph Lameter" <[email protected]>
• Subject: Re: [patch 09/10] SLUB: Do our own locking via slab_lock and slab_unlock.
• From: "Pekka Enberg" <[email protected]>
• Date: Mon, 29 Oct 2007 08:30:35 +0200
• Cc: "Matthew Wilcox" <[email protected]>, [email protected], [email protected], [email protected]
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• In-reply-to: <[email protected]>
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• Sender: [email protected]

Hi,

On 10/29/07, Christoph Lameter <[email protected]> wrote:
> > We don't need preempt_enable for CONFIG_SMP, right?
>
> preempt_enable is needed if preemption is enabled.

Disabled? But yeah, I see that slab_trylock() can leave preemption
disabled if cmpxchg fails. Was confused by the #ifdefs... :-)
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• References:
  • [patch 00/10] SLUB: SMP regression tests on Dual Xeon E5345 (8p) and new performance patches
    • From: Christoph Lameter <[email protected]>
  • [patch 09/10] SLUB: Do our own locking via slab_lock and slab_unlock.
    • From: Christoph Lameter <[email protected]>
  • Re: [patch 09/10] SLUB: Do our own locking via slab_lock and slab_unlock.
    • From: Pekka J Enberg <[email protected]>
  • Re: [patch 09/10] SLUB: Do our own locking via slab_lock and slab_unlock.
    • From: Christoph Lameter <[email protected]>

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