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Date: Fri, 09 Oct 2009 14:15:58 -0700
From: Jeremy Fitzhardinge <jeremy@goop.org>
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To: Andi Kleen <andi@firstfloor.org>
CC: Ingo Molnar <mingo@redhat.com>,
       Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
       the arch/x86 maintainers <x86@kernel.org>
Subject: Duplication of vdso and vsyscall code?
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arch/x86/kernel/vsyscall_64.c implements vgettimeofday and vgetcpu. 
(And vtime)

arch/x86/vdso/vclock_gettime.c implements __vdso_gettimeofday (and
__vdso_clock_gettime), and vgetcpu.c has __vdso_getcpu.

These appear to be functionally identical duplicate definitions.   I
don't understand the history here to know how we came to get two sets of
these functions, but surely we can share the same code for both of these?

Thanks,
    J