On Monday, February 11, 2013 05:13:30 PM Nathan Zimmer wrote:
> There are some spots that I need to give a much deeper review, cpufreq_register_driver for example.
>
> But I believe
> > @@ -196,7 +195,7 @@ static void __cpufreq_cpu_put(struct cpufreq_policy *data, bool sysfs)
> > {
> > if (!sysfs)
> > kobject_put(&data->kobj);
> > - module_put(cpufreq_driver->owner);
> > + module_put(rcu_dereference(cpufreq_driver)->owner);
> > }
> would be ok. In the documentation whatisRCU.txt they give a very similar example.
Well, the very same document states the following:
Note that the value returned by rcu_dereference() is valid
only within the enclosing RCU read-side critical section.
Thanks,
Rafael
--
I speak only for myself.
Rafael J. Wysocki, Intel Open Source Technology Center.
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