linux-kernel - Re: [PATCH v3 0/1] asus-wmi: add platform

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Date:   Sun, 15 Aug 2021 16:10:50 +0200
From:   Bastien Nocera <hadess@...ess.net>
To:     Hans de Goede <hdegoede@...hat.com>, Luke Jones <luke@...nes.dev>,
        linux-kernel@...r.kernel.org
Cc:     platform-driver-x86@...r.kernel.org
Subject: Re: [PATCH v3 0/1] asus-wmi: add platform_profile support

On Sun, 2021-08-15 at 15:48 +0200, Hans de Goede wrote:
> Hi,
> 
> On 8/14/21 9:51 AM, Luke Jones wrote:
> > 
> > 
> > On Sat, Aug 14 2021 at 16:31:02 +1200, Luke D. Jones
> > <luke@...nes.dev> wrote:
> > > Changelog:
> > > - V2
> > >   + Correctly unregister from platform_profile if
> > >     throttle_thermal_policy fails
> > >   + Do platform_profile_notify() in both
> > > throttle_thermal_policy_store()
> > >     and in throttle_thermal_policy_switch_next()
> > >   + Remove unnecessary prep for possible fan-boost modes as this
> > >     doesn't match expected platform_profile behaviour
> > > - V3
> > >   + Add missing declaration for err in
> > >     throttle_thermal_policy_switch_next
> > > 
> > > Luke D. Jones (1):
> > >   asus-wmi: Add support for platform_profile
> > > 
> > >  drivers/platform/x86/asus-wmi.c | 139
> > > +++++++++++++++++++++++++++++++-
> > >  1 file changed, 135 insertions(+), 4 deletions(-)
> > > 
> > > -- 
> > > 2.31.1
> > 
> > Hi,
> > 
> > I teested the patch again and it appears that the
> > platform_profile_notify() in both throttle_thermal_policy_store() and
> > throttle_thermal_policy_switch_next() updates the
> > /sys/firmware/acpi/platform_profile sysfs path fine, but userspace
> > isn't updated?
> > 
> > The way I'm checking is:
> > 1. echo 1 |sudo tee /sys/devices/platform/asus-nb-
> > wmi/throttle_thermal_policy
> > 2. cat -p /sys/firmware/acpi/platform_profile
> >   - performance (updated correctly by platform_profile_notify)
> > 3. Check gnome-settings, not updated.
> > 
> > Doing `echo "performance" |sudo tee
> > /sys/firmware/acpi/platform_profile` updates both
> > throttle_thermal_policy and userspace as expected. I'm wondering if
> > I've missed something?
> 
> If you add a printk where you call platform_profile_notify() and you
> see that
> happening, then you are likely seeing a userspace bug. Possibly your
> power-profile-daemon is simply a bit old and therefor does not support
> the combination of profiles which asus-wmi offers, IIRC it falls back
> to
> using intel-pstate in that case.

Support for the quiet profile is only available in git:
https://gitlab.freedesktop.org/hadess/power-profiles-daemon/-/commit/c9b646025d9f155509a6cda1c292bfd120daeb9e

You can apply the patch on top of 0.9.0 if you want to use your
distribution's packages or something.

There's debugging info in the README should that be necessary.

> You could try building the latest power-profile-daemon from git and run
> it in verbose mode. If it sees the changes and the control-panel applet
> is
> still not updating then I would not worry about that. The userspace
> code
> is still somewhat new and I'm not sure which version your distro is
> running and how well it is keeping up with gnome-updates.
> 
> Regards,
> 
> Hans
>