Messages in this thread | | | From | "Rafael J. Wysocki" <> | Subject | Re: BUG: using smp_processor_id() in preemptible code: s2disk | Date | Mon, 14 Jun 2010 16:23:31 +0200 |
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On Monday, June 14, 2010, Sergey Senozhatsky wrote: > Hello, > Not sure if this simple solution is the correct one.
Well, let's ask the scheduler people.
Ingo, Peter, what do you think of the patch below?
Rafael
> --- > > 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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