linux-kernel - Re: [PATCH] intel_idle: Add ICL support

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Message-ID: <CAJZ5v0hEEDp6thXSOM2ruVjKU02f1Jfn_nEms1yHUrQR2Q_XaQ@mail.gmail.com>
Date:   Wed, 26 Aug 2020 15:17:10 +0200
From:   "Rafael J. Wysocki" <rafael@...nel.org>
To:     Guilhem Lettron <guilhem@...pilot.io>
Cc:     "Rafael J. Wysocki" <rafael@...nel.org>,
        Jacob Pan <jacob.jun.pan@...ux.intel.com>,
        Len Brown <lenb@...nel.org>,
        Linux PM <linux-pm@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] intel_idle: Add ICL support

On Wed, Aug 26, 2020 at 2:59 PM Guilhem Lettron <guilhem@...pilot.io> wrote:
>
> On my laptop, a Dell XPS 13 7390 2-in-1 with i7-1065G7, ACPI only report "C1_ACPI", "C2_ACPI" and "C3_ACPI".

Can you list the properties of the idle states in this configuration, that is:

$ grep -r '.*' /sys/devices/system/cpu/cpu0/cpuidle/state1/

and analogously for state2 and state3, and send the output of this?

On my desktop system the above comment produces the following output:

/sys/devices/system/cpu/cpu0/cpuidle/state1/disable:0
/sys/devices/system/cpu/cpu0/cpuidle/state1/above:1022634
/sys/devices/system/cpu/cpu0/cpuidle/state1/time:2556533185
/sys/devices/system/cpu/cpu0/cpuidle/state1/power:0
/sys/devices/system/cpu/cpu0/cpuidle/state1/residency:2
/sys/devices/system/cpu/cpu0/cpuidle/state1/latency:2
/sys/devices/system/cpu/cpu0/cpuidle/state1/usage:17625391
/sys/devices/system/cpu/cpu0/cpuidle/state1/desc:MWAIT 0x00
/sys/devices/system/cpu/cpu0/cpuidle/state1/below:6578613
/sys/devices/system/cpu/cpu0/cpuidle/state1/default_status:enabled
/sys/devices/system/cpu/cpu0/cpuidle/state1/name:C1
/sys/devices/system/cpu/cpu0/cpuidle/state1/s2idle/time:0
/sys/devices/system/cpu/cpu0/cpuidle/state1/s2idle/usage:0

Thanks!