Re: [PATCH] sched: fix never executed code due to expression always false

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Jesper Juhl wrote:


As per this patch perhaps? :

Thanks. I'll make sure it gets to the right place if nobody picks it up.

Signed-off-by: Jesper Juhl <[email protected]>

--- linux-2.6.12-rc2-mm3-orig/kernel/sched.c	2005-04-11 21:20:56.000000000 +0200
+++ linux-2.6.12-rc2-mm3/kernel/sched.c	2005-04-15 02:21:34.000000000 +0200
@@ -2697,9 +2697,10 @@ need_resched_nonpreemptible:
 	schedstat_inc(rq, sched_cnt);
 	now = sched_clock();
 	if (likely((long long)now - prev->timestamp < NS_MAX_SLEEP_AVG)) {
-		run_time = now - prev->timestamp;
-		if (unlikely((long long)now - prev->timestamp < 0))
+		if (unlikely(((long long)now - (long long)prev->timestamp) < 0))
 			run_time = 0;
+		else
+			run_time = now - prev->timestamp;
 	} else
 		run_time = NS_MAX_SLEEP_AVG;
@@ -2776,7 +2777,7 @@ go_idle: if (!rt_task(next) && next->activated > 0) {
 		unsigned long long delta = now - next->timestamp;
-		if (unlikely((long long)now - next->timestamp < 0))
+		if (unlikely(((long long)now - (long long)next->timestamp) < 0))
 			delta = 0;
if (next->activated == 1)





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SUSE Labs, Novell Inc.

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