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

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Message-ID: <AE90C24D6B3A694183C094C60CF0A2F6D8AEF7@saturn3.aculab.com>
Date:	Thu, 1 Dec 2011 11:04:35 -0000
From:	"David Laight" <David.Laight@...LAB.COM>
To:	"Eric Dumazet" <eric.dumazet@...il.com>,
	"Hagen Paul Pfeifer" <hagen@...u.net>,
	"David Miller" <davem@...emloft.net>
Cc:	"netdev" <netdev@...r.kernel.org>
Subject: RE: [PATCH net-next] netem: fix build error on 32bit arches

 
> +	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.

	David


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