From: Ingo Molnar <mingo@elte.hu>
Date: Fri, 7 Dec 2007 18:02:47 +0000 (+0100)
Subject: sched: enable early use of sched_clock()
X-Git-Tag: v2.6.24-rc5~50^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8ced5f69e4bc09adcc6442e090e2e64c197246cf;p=pandora-kernel.git

sched: enable early use of sched_clock()

some platforms have sched_clock() implementations that cannot be called
very early during wakeup. If it's called it might hang or crash in hard
to debug ways. So only call update_rq_clock() [which calls sched_clock()]
if sched_init() has already been called. (rq->idle is NULL before the
scheduler is initialized.)

Signed-off-by: Ingo Molnar <mingo@elte.hu>
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