linux-kernel - Re: [PATCH v3] thermal: core: Call monitor_thermal

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Message-ID: <20240716125538.09f716d1@mir>
Date: Tue, 16 Jul 2024 12:55:38 +0200
From: Stefan Lippers-Hollmann <s.l-h@....de>
To: "Rafael J. Wysocki" <rafael@...nel.org>
Cc: Daniel Lezcano <daniel.lezcano@...aro.org>, Eric Biggers
 <ebiggers@...nel.org>, "Rafael J. Wysocki" <rjw@...ysocki.net>, Linux PM
 <linux-pm@...r.kernel.org>, LKML <linux-kernel@...r.kernel.org>, Lukasz
 Luba <lukasz.luba@....com>, Srinivas Pandruvada
 <srinivas.pandruvada@...ux.intel.com>, Zhang Rui <rui.zhang@...el.com>,
 Neil Armstrong <neil.armstrong@...aro.org>
Subject: Re: [PATCH v3] thermal: core: Call monitor_thermal_zone() if zone
 temperature is invalid

Hi

On 2024-07-16, Rafael J. Wysocki wrote:
> On Tue, Jul 16, 2024 at 1:48 AM Stefan Lippers-Hollmann <s.l-h@....de> wrote:
> > On 2024-07-15, Rafael J. Wysocki wrote:
> > > On Mon, Jul 15, 2024 at 2:54 PM Stefan Lippers-Hollmann <s.l-h@....de> wrote:
> > > > On 2024-07-15, Rafael J. Wysocki wrote:
> > > > > On Mon, Jul 15, 2024 at 11:09 AM Daniel Lezcano
> > > > > <daniel.lezcano@...aro.org> wrote:
> > > > > > On 15/07/2024 06:45, Eric Biggers wrote:
> > > > > > > On Thu, Jul 04, 2024 at 01:46:26PM +0200, Rafael J. Wysocki wrote:
> > > > > > >> From: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
> > [...]
> > > > Silencing the warnings is already a big improvement - and that patch
> > > > works to this extent for me with an ax200, thanks.
> > >
> > > So attached is a patch that should avoid enabling the thermal zone
> > > when it is not ready for use in the first place, so it should address
> > > both the message and the useless polling.
> > >
> > > I would appreciate giving it a go (please note that it hasn't received
> > > much testing so far, though).
> >
> > Sadly this patch doesn't seem to help:
> 
> This is likely because it is missing checks for firmware image type.
> I've added them to the attached new version.  Please try it.
> 
> I've also added two pr_info() messages to get a better idea of what's
> going on, so please grep dmesg for "Thermal zone not ready" and
> "Enabling thermal zone".

This is the output with the patch applied:

$ dmesg | grep -i -e iwlwifi -e thermal
[    0.081026] CPU0: Thermal monitoring enabled (TM1)
[    0.113898] thermal_sys: Registered thermal governor 'fair_share'
[    0.113900] thermal_sys: Registered thermal governor 'bang_bang'
[    0.113901] thermal_sys: Registered thermal governor 'step_wise'
[    0.113902] thermal_sys: Registered thermal governor 'user_space'
[    0.113903] thermal_sys: Registered thermal governor 'power_allocator'
[    3.917770] iwlwifi 0000:04:00.0: enabling device (0140 -> 0142)
[    3.926543] iwlwifi 0000:04:00.0: Detected crf-id 0x3617, cnv-id 0x100530 wfpm id 0x80000000
[    3.926551] iwlwifi 0000:04:00.0: PCI dev 2723/0084, rev=0x340, rfid=0x10a100
[    3.936737] iwlwifi 0000:04:00.0: TLV_FW_FSEQ_VERSION: FSEQ Version: 89.3.35.37
[    4.021494] iwlwifi 0000:04:00.0: loaded firmware version 77.a20fb07d.0 cc-a0-77.ucode op_mode iwlmvm
[    4.347478] iwlwifi 0000:04:00.0: Detected Intel(R) Wi-Fi 6 AX200 160MHz, REV=0x340
[    4.347616] iwl_mvm_thermal_zone_register: Thermal zone not ready
[    4.478749] iwlwifi 0000:04:00.0: Detected RF HR B3, rfid=0x10a100
[    4.478777] thermal thermal_zone2: Enabling thermal zone
[    4.543601] iwlwifi 0000:04:00.0: base HW address: 94:e6:f7:XX:XX:XX
[    4.559564] thermal thermal_zone2: failed to read out thermal zone (-61)
[    4.602339] iwlwifi 0000:04:00.0 wlp4s0: renamed from wlan0
[    4.810373] thermal thermal_zone2: failed to read out thermal zone (-61)
[    5.066381] thermal thermal_zone2: failed to read out thermal zone (-61)
[    5.322385] thermal thermal_zone2: failed to read out thermal zone (-61)
[    5.579377] thermal thermal_zone2: failed to read out thermal zone (-61)
[    5.834375] thermal thermal_zone2: failed to read out thermal zone (-61)
[    6.091372] thermal thermal_zone2: failed to read out thermal zone (-61)
[    6.346400] thermal thermal_zone2: failed to read out thermal zone (-61)
               [...]

Regards
	Stefan Lippers-Hollmann

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