netdev - RE: [PATCH net-next] netem: fix build error on 32bit arches

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Message-ID: <1322738355.2335.26.camel@edumazet-HP-Compaq-6005-Pro-SFF-PC>
Date:	Thu, 01 Dec 2011 12:19:15 +0100
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	David Laight <David.Laight@...LAB.COM>
Cc:	Hagen Paul Pfeifer <hagen@...u.net>,
	David Miller <davem@...emloft.net>,
	netdev <netdev@...r.kernel.org>
Subject: RE: [PATCH net-next] netem: fix build error on 32bit arches

Le jeudi 01 décembre 2011 à 11:04 +0000, David Laight a écrit :
> > +	u64 ticks = (u64)len * NSEC_PER_SEC;
> Writing:
> 	u64 ticks = len * (u64)NSEC_PER_SEC;
> probably generates better code since the compiler
> is much more likely to spot that a single 32x32 -> 64
> multiply is adequate.
> 

Your copy if gcc is very dumb then :)



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