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Date: Wed, 2 Jun 2010 14:59:12 -0700 From: Stephen Hemminger <shemminger@...tta.com> To: Ben Hutchings <bhutchings@...arflare.com> Cc: David Miller <davem@...emloft.net>, junchangwang@...il.com, romieu@...zoreil.com, netdev@...r.kernel.org Subject: Re: 64-bit net_device_stats On Wed, 02 Jun 2010 22:34:29 +0100 Ben Hutchings <bhutchings@...arflare.com> wrote: > Changing the counter types to u64 for 32-bit architectures would remove > atomicity and expose half-updated counters to userland. Changing the > driver interface significantly so that atomicity is not needed would > require changes to hundreds of drivers. Another big issue is maintaining ABI compatibility for /proc and ioctl interfaces. So bigger values would only be available through netlink, and most applications using counters don't use netlink. -- -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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