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From: Andrew Morton <akpm@osdl.org>
To: Keith Owens <kaos@sgi.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: [patch] 2.6.6-rc2 Allow architectures to reenable interrupts on contended spinlocks
Date: Mon, 26 Apr 2004 21:49:52 -0700	[thread overview]
Message-ID: <20040426214952.333c9ad7.akpm@osdl.org> (raw)
In-Reply-To: <1928.1083031191@kao2.melbourne.sgi.com>

Keith Owens <kaos@sgi.com> wrote:
>
>  Enable interrupts while waiting for a disabled spinlock, but only if
>  interrupts were enabled before issuing spin_lock_irqsave().  It makes a
>  measurable difference to interrupt servicing on large systems.

Do you know which are the offending locks?

How much difference, and how large are the systems?

Thanks.

  reply	other threads:[~2004-04-27  4:50 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-04-27  1:59 Keith Owens
2004-04-27  4:49 ` Andrew Morton [this message]
2004-04-27  5:19   ` Keith Owens
2004-04-27  6:54 ` Benjamin Herrenschmidt
2004-04-27  7:45   ` Keith Owens
2004-04-27 11:36     ` Paul Mackerras
2004-04-27 12:05       ` Keith Owens
2004-04-27 12:33         ` Christoph Hellwig
2004-04-27 16:01 ` Linus Torvalds
2004-04-28  3:29   ` [patch] 2.6.6-rc3 " Keith Owens
2004-04-30  7:07     ` Andrew Morton

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