Re: [Query] CPUFreq: Why do we need policy->user_policy?

From: Lan Tianyu
Date: Tue Aug 27 2013 - 10:04:57 EST


2013/8/27 Viresh Kumar <viresh.kumar@xxxxxxxxxx>:
> On 26 August 2013 20:53, Lan Tianyu <lantianyu1986@xxxxxxxxx> wrote:
>> So far as I know, it stores some user's config and cpufreq_update_policy()
>> bases on the data in the struct to start a new policy. Cpu thermal driver
>> (/driver/thermal/cpu_cooling.c)also will its value to update freq policy
>> when receive a cpufreq policy adjust notification.
>
> Yeah, but how are these different from policy->min/max/policy/governor?
> Why do we need to replicate this information?

>From my understanding.policy->min/max may be modified by some drivers
but the user_policy only store user space config and should not be changed
by other reason. :)

--
Best regards
Tianyu Lan
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/