From: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
To: "Rafael J. Wysocki" <rafael@kernel.org>
Cc: Len Brown <lenb@kernel.org>,
"Rafael J. Wysocki" <rjw@rjwysocki.net>,
Linux PM <linux-pm@vger.kernel.org>
Subject: Re: [PATCH] cpufreq: intel_pstate: Set EPP/EPB to 0 in performance mode
Date: Mon, 21 Nov 2016 09:27:18 -0800 [thread overview]
Message-ID: <1479749238.6544.147.camel@linux.intel.com> (raw)
In-Reply-To: <CAJZ5v0iC2MesdO58+d1J4u1F5UYGtcPZArXWkiY5cptF=bxntw@mail.gmail.com>
On Sat, 2016-11-19 at 00:26 +0100, Rafael J. Wysocki wrote:
> On Fri, Nov 18, 2016 at 4:15 AM, Srinivas Pandruvada
> <srinivas.pandruvada@linux.intel.com> wrote:
[...]
> > + if (cpu_data->policy ==
> > CPUFREQ_POLICY_PERFORMANCE) {
>
> Why don't we simply save the EPP/EPB here, ->
We can, but we loose the ability to restore to the default power on
configuration. For other control limits, users have ability to look at
the sysfs and set the limits back to power on default. Since we don't
have any other way to look at go back to default EPP, once save and
restore. So if this behavior is not important, then this can be done.
Thanks,
Srinivas
next prev parent reply other threads:[~2016-11-21 17:27 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-11-18 3:15 [PATCH] cpufreq: intel_pstate: Set EPP/EPB to 0 in performance mode Srinivas Pandruvada
2016-11-18 23:26 ` Rafael J. Wysocki
2016-11-21 17:27 ` Srinivas Pandruvada [this message]
2016-11-21 20:57 ` Rafael J. Wysocki
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