From: Akinobu Mita <amgta@yacht.ocn.ne.jp>

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}'

Signed-off-by: Andrew Morton <akpm@osdl.org>
---

 25-sparc64-akpm/kernel/sched.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletion(-)

diff -puN kernel/sched.c~schedstat-fix-schedule-statistics kernel/sched.c
--- 25-sparc64/kernel/sched.c~schedstat-fix-schedule-statistics	2004-10-22 00:40:46.764681720 -0700
+++ 25-sparc64-akpm/kernel/sched.c	2004-10-22 00:40:46.771680656 -0700
@@ -2574,7 +2574,6 @@ go_idle:
 		}
 	} else {
 		if (dependent_sleeper(cpu, rq)) {
-			schedstat_inc(rq, sched_goidle);
 			next = rq->idle;
 			goto switch_tasks;
 		}
@@ -2618,6 +2617,8 @@ go_idle:
 	}
 	next->activated = 0;
 switch_tasks:
+	if (next == rq->idle)
+		schedstat_inc(rq, sched_goidle);
 	prefetch(next);
 	clear_tsk_need_resched(prev);
 	rcu_qsctr_inc(task_cpu(prev));
_