From: Eric Dumazet <dada1@cosmosbay.com>
Date: Tue, 13 Feb 2007 12:26:21 +0000 (+0100)
Subject: [PATCH] x86-64: get rid of ARCH_HAVE_XTIME_LOCK
X-Git-Tag: v2.6.21-rc1~184^2~76
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5809f9d442e9dbb23859e2c37d8c47043f6b5cc9;p=pandora-kernel.git

[PATCH] x86-64: get rid of ARCH_HAVE_XTIME_LOCK

ARCH_HAVE_XTIME_LOCK is used by x86_64 arch .  This arch needs to place a
read only copy of xtime_lock into vsyscall page.  This read only copy is
named __xtime_lock, and xtime_lock is defined in
arch/x86_64/kernel/vmlinux.lds.S as an alias.  So the declaration of
xtime_lock in kernel/timer.c was guarded by ARCH_HAVE_XTIME_LOCK define,
defined to true on x86_64.

We can get same result with _attribute__((weak)) in the declaration. linker
should do the job.

Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
---

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