Re: hires timestamps for netif_rx()

From: David S. Miller (
Date: Fri Jan 18 2002 - 15:36:00 EST

   From: Andi Kleen <>
   Date: Fri, 18 Jan 2002 21:14:08 +0100

   On Fri, Jan 18, 2002 at 12:09:05PM -0800, David S. Miller wrote:
> Andi, i386 SMP? :-)
   If you used do_gettimeofday unconditionally then everybody would eat the readlock, not
   only i386 (unless you change it to be lockless first like andrea did for the
   x86-64 vsyscall version)
   If you didn't propose to use it unconditionally then I
   misunderstood you and I apologize.

Andi, the x86 platforms that have SMP have TSC and in that
case do_get_fast_time == do_gettimeofday and there is no read locking

This is the whole point of this, get_fast_time is total garbage.
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