From: Viresh Kumar <viresh.kumar@linaro.org>
To: "Zengtao (B)" <prime.zeng@hisilicon.com>
Cc: "rjw@rjwysocki.net" <rjw@rjwysocki.net>,
"linux-pm@vger.kernel.org" <linux-pm@vger.kernel.org>
Subject: Re: cpufreq_resume warning issue
Date: Mon, 21 Mar 2016 15:14:41 +0530 [thread overview]
Message-ID: <20160321094441.GC27778@vireshk-i7> (raw)
In-Reply-To: <678F3D1BB717D949B966B68EAEB446ED0A6D9756@SZXEMA509-MBX.china.huawei.com>
On 21-03-16, 09:26, Zengtao (B) wrote:
> Actually the freq is tunable, but voltage is fixed, So we fix it to a high freq because little benefit by freq tuning.
Okay, then just enable cpufreq and select performace governor for it, which will
select the highest frequency for the CPU.
> Since the DVFS has percpu dvfs policy, so I think it is reasonable to allow cpu to disable dvfs, what do you think about that?
Its not that we can't update core code for some specific use cases, but here you
should be using cpufreq core for the CPU0 as well, with a proper governor which
would not have any overheads during operations.
--
viresh
next prev parent reply other threads:[~2016-03-21 9:44 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-21 3:43 cpufreq_resume warning issue Zengtao (B)
2016-03-21 7:32 ` Viresh Kumar
2016-03-21 8:05 ` Zengtao (B)
2016-03-21 8:34 ` Viresh Kumar
2016-03-21 9:07 ` Zengtao (B)
2016-03-21 9:09 ` Viresh Kumar
2016-03-21 9:26 ` Zengtao (B)
2016-03-21 9:44 ` Viresh Kumar [this message]
2016-03-22 9:58 ` Zengtao (B)
2016-03-22 10:32 ` Viresh Kumar
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