From: Isaku Yamahata <yamahata@valinux.co.jp>
Date: Wed, 4 Mar 2009 12:05:40 +0000 (+0900)
Subject: ia64/pv_ops/pv_time_ops: add sched_clock hook.
X-Git-Tag: v2.6.30-rc1~411^2~2^2~13
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f927da178671a824cf6c530f0623544206387e57;p=pandora-kernel.git

ia64/pv_ops/pv_time_ops: add sched_clock hook.

add sched_clock() hook to paravirtualize sched_clock().
ia64 sched_clock() is based on ar.itc which isn't stable
on virtualized environment because vcpu may move around on
pcpus. So it needs paravirtualization.

Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Tony Luck <tony.luck@intel.com>
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