netdev - Re: [PATCH 2/5] accounting unit and variable

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Message-ID: <20071109123420.GD27984@gondor.apana.org.au>
Date:	Fri, 9 Nov 2007 20:34:20 +0800
From:	Herbert Xu <herbert@...dor.apana.org.au>
To:	Hideo AOKI <haoki@...hat.com>
Cc:	David Miller <davem@...emloft.net>,
	netdev <netdev@...r.kernel.org>,
	Satoshi Oshima <satoshi.oshima.fk@...achi.com>,
	Andi Kleen <andi@...stfloor.org>,
	Stephen Hemminger <shemminger@...ux-foundation.org>,
	Evgeniy Polyakov <johnpol@....mipt.ru>,
	yoshfuji@...ux-ipv6.org,
	Yumiko Sugita <yumiko.sugita.yf@...achi.com>
Subject: Re: [PATCH 2/5] accounting unit and variable

On Mon, Oct 29, 2007 at 05:23:10PM -0400, Hideo AOKI wrote:
>  
> +#define SK_DATAGRAM_MEM_QUANTUM ((int)PAGE_SIZE)
> +
> +static inline int sk_datagram_pages(int amt)
> +{
> +	return DIV_ROUND_UP(amt, SK_DATAGRAM_MEM_QUANTUM);
> +}

Does this really have to be int? Unsigned would let the compiler
optimise this to a simple shift.

Cheers,
-- 
Visit Openswan at http://www.openswan.org/
Email: Herbert Xu ~{PmV>HI~} <herbert@...dor.apana.org.au>
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