The number of times schedule() left the processor idle in the
/proc/schedstat (runqueue.sched_goidle) seems to be wrong.

The schedule() statistics should satisfy the equation:
	sched_cnt == sched_noswitch + sched_switch + sched_goidle

(http://eaglet.rain.com/rick/linux/schedstat/v10/format-10.html)

The below patch fix this, and I have confirmed to be fixed with:
	# grep ^cpu /proc/schedstat | awk '{print $6+$7+$9, $8}'
Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>