From: Andrew Morton <akpm@osdl.org>
To: Ravikiran G Thirumalai <kiran@scalex86.org>
Cc: linux-kernel@vger.kernel.org, Andi Kleen <ak@suse.de>,
"Shai Fultheim (Shai@scalex86.org)" <shai@scalex86.org>,
pravin b shelar <pravin.shelar@calsoftinc.com>,
"Benzi Galili (Benzi@ScaleMP.com)" <benzi@scalemp.com>
Subject: Re: [rfc] [patch 1/2] spin_lock_irq: Enable interrupts while spinning -- preperatory patch
Date: Wed, 3 Jan 2007 00:16:35 -0800 [thread overview]
Message-ID: <20070103001635.ecbd74e5.akpm@osdl.org> (raw)
In-Reply-To: <20070103075923.GA3789@localhost.localdomain>
On Tue, 2 Jan 2007 23:59:23 -0800
Ravikiran G Thirumalai <kiran@scalex86.org> wrote:
> The following patches do just that. The first patch is preparatory in nature
> and the second one changes the x86_64 implementation of spin_lock_irq.
> Patch passed overnight runs of kernbench and dbench on 4 way x86_64 smp.
The end result of this is, I think, that i386 enables irqs while spinning
in spin_lock_irqsave() but not while spinning in spin_lock_irq(). And
x86_64 does the opposite.
Odd, isn't it?
next prev parent reply other threads:[~2007-01-03 8:16 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-01-03 7:59 [rfc] [patch 1/2] spin_lock_irq: Enable interrupts while spinning -- preperatory patch Ravikiran G Thirumalai
2007-01-03 8:01 ` [rfc] [patch 2/2] spin_lock_irq: Enable interrupts while spinning -- x86_64 implementation Ravikiran G Thirumalai
2007-01-03 8:16 ` Andrew Morton [this message]
2007-01-03 19:11 ` [rfc] [patch 1/2] spin_lock_irq: Enable interrupts while spinning -- preperatory patch Ravikiran G Thirumalai
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