Re: BUG: using smp_processor_id() in preemptible code: s2disk

[Sergey Senozhatsky]

Hello,
Not sure if this simple solution is the correct one.

---

diff --git a/kernel/sched.c b/kernel/sched.c
index f8b8996..cfb262b 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -2866,7 +2866,10 @@ unsigned long nr_iowait(void)
 
 unsigned long nr_iowait_cpu(void)
 {
-	struct rq *this = this_rq();
+	int cpu = get_cpu();
+	struct rq *this = cpu_rq(cpu);
+	put_cpu();
+	
 	return atomic_read(&this->nr_iowait);
 }
 
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