linux-kernel - Re: [PATCH v2 0/7] cpufreq: intel_pstate: Enable EAS on hybrid platforms without SMT

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Message-ID: <a27c8ef8-9b80-4749-a64a-0389c266fd0e@gmail.com>
Date: Sun, 29 Jun 2025 17:58:44 +0530
From: Ibrahim Ansari <ansari.ibrahim1@...il.com>
To: "Rafael J. Wysocki" <rafael@...nel.org>,
 Linux PM <linux-pm@...r.kernel.org>
Cc: LKML <linux-kernel@...r.kernel.org>, Lukasz Luba <lukasz.luba@....com>,
 Peter Zijlstra <peterz@...radead.org>,
 Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>,
 Dietmar Eggemann <dietmar.eggemann@....com>,
 Morten Rasmussen <morten.rasmussen@....com>,
 Vincent Guittot <vincent.guittot@...aro.org>,
 Ricardo Neri <ricardo.neri-calderon@...ux.intel.com>,
 Pierre Gondois <pierre.gondois@....com>,
 Christian Loehle <christian.loehle@....com>,
 "Rafael J. Wysocki" <rjw@...ysocki.net>
Subject: Re: [PATCH v2 0/7] cpufreq: intel_pstate: Enable EAS on hybrid
 platforms without SMT

Hi,

On 5/13/25 19:31, Rafael J. Wysocki wrote:

> Finally, schedutil needs to be the cpufreq governor which requires
> intel_pstate to operate in the passive mode (schedutil is the default
> governor in that case).  The most straightforward way to switch it
> into the passive mode is to write "passive" to
> /sys/devices/system/cpu/intel_pstate/status (it may also be started in
> the passive mode as described in
> https://www.kernel.org/doc/html/latest/admin-guide/pm/intel_pstate.html).

I'm curious if you intend to bring back support for EAS with 
intel_pstate in active mode down the line?

That would get this working out of the box across distros, since 
`intel_pstate=active` is the default setup everywhere (and typically 
what users should prefer? as I understand from the documentation.)

Thanks for your work!