From: Ingo Molnar <mingo@elte.hu>
To: Richard Kennedy <richard@rsk.demon.co.uk>
Cc: tglx@linutronix.de, lkml <linux-kernel@vger.kernel.org>,
"H. Peter Anvin" <hpa@zytor.com>
Subject: Re: [PATCH] irq.h remove padding from irq_desc on 64bits
Date: Sun, 23 Nov 2008 16:15:07 +0100 [thread overview]
Message-ID: <20081123151507.GE3224@elte.hu> (raw)
In-Reply-To: <1227450883.2970.11.camel@castor.localdomain>
* Richard Kennedy <richard@rsk.demon.co.uk> wrote:
> struct irq_desc : reorder to remove padding on 64bits
>
> shrinks irq_desc to 128 bytes which saves data space & cache lines
>
> On a generic x86_64/SMP build this reduces the reported data size by
> 64k.
>
> Signed-off-by: Richard Kennedy <richard@rsk.demon.co.uk>
>
> ----
> This patch is against 2.628-rc6, built & tested on AMD 64x2 desktop.
nice one - applied to tip/irq/core, thanks Richard!
Ingo
prev parent reply other threads:[~2008-11-23 15:15 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-11-23 14:34 Richard Kennedy
2008-11-23 15:15 ` Ingo Molnar [this message]
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