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Message-ID: <CAJZ5v0hNCezncvW-g1UVPoF-ZmeVWd192FCaZVWrV-+Ucsycpg@mail.gmail.com>
Date: Tue, 30 Aug 2022 18:50:49 +0200
From: "Rafael J. Wysocki" <rafael@...nel.org>
To: Daniel Lezcano <daniel.lezcano@...aro.org>
Cc: Dan Carpenter <dan.carpenter@...cle.com>,
Linux PM mailing list <linux-pm@...r.kernel.org>,
Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
Jiapeng Chong <jiapeng.chong@...ux.alibaba.com>
Subject: Re: [GIT PULL] early thermal changes for v6.1-rc1
On Wed, Aug 24, 2022 at 8:16 PM Rafael J. Wysocki <rafael@...nel.org> wrote:
>
> On Wed, Aug 24, 2022 at 1:38 PM Daniel Lezcano
> <daniel.lezcano@...aro.org> wrote:
> >
> >
> > Hi Rafael,
> >
> > this cycle will contain certainly a higher number of changes than the
> > previous ones. That will come from the rework of the thermal trip
> > handling / consolidation which is still WIP but where the drivers
> > changes are partly acked-by the different maintainers. The result will
> > be great IMO in terms of cleanup, encapsulation and maintainability.
> >
> > The thermal OF cleanup and rework have been consolidated meanwhile.
> >
> > In order to not have a huge pull request at the end of the v6.1
> > development cycle, I propose to send early but smaller pull requests
> > (release often, release early), so hopefully that will make the changes
> > smooth and may be hit the potential bugs for those who are sticking to
> > linux-pm instead of linux-next.
> >
> > This pull request is the first one and has been in the linux-next branch
> > since a couple of weeks.
> >
> > It includes the thermal OF rework, with the corresponding fixes and the
> > monitoring locking scheme path changes.
>
> Pulled, thanks!
So after merging this, the Dell XPS13 9360 in my office doesn't reboot any more.
Undoing the merge makes it reboot again.
Bisection indicates
commit 670a5e356cb6dfc61b87b599eba483af6a3a99ad
Author: Daniel Lezcano <daniel.lezcano@...aro.org>
Date: Fri Aug 5 17:38:33 2022 +0200
thermal/core: Move the thermal zone lock out of the governors
as the first bad commit, but I'm not sure what can be wrong with it yet.
Also a couple of commits before it are somewhat suspicious.
> > The following changes since commit 8c596324232d22e19f8df59ba03410b9b5b0f3d7:
> >
> > dt-bindings: thermal: Fix missing required property (2022-08-15
> > 20:38:40 +0200)
> >
> > are available in the Git repository at:
> >
> >
> > ssh://git@...olite.kernel.org/pub/scm/linux/kernel/git/thermal/linux.git
> > tags/thermal-v6.1-rc1
> >
> > for you to fetch changes up to 06f36055121769b9eb9b7d28c7499d1cc8269dc3:
> >
> > Revert "mlxsw: core: Add the hottest thermal zone detection"
> > (2022-08-17 20:32:27 +0200)
> >
> > ----------------------------------------------------------------
> > - Rework the device tree initialization, convert the drivers to the
> > new API and remove the old OF code (Daniel Lezcano)
> >
> > - Fix return value to -ENODEV when searching for a specific thermal
> > zone which does not exist (Daniel Lezcano)
> >
> > - Fix the return value inspection in of_thermal_zone_find() (Dan
> > Carpenter)
> >
> > - Fix kernel panic when kasan is enabled as it detects an use after
> > free when unregistering a thermal zone (Daniel Lezcano)
> >
> > - Move the set_trip ops inside the thermal sysfs code (Daniel Lezcano)
> >
> > - Remove unnecessary error message as it is already showed in the
> > underlying function (Jiapeng Chong)
> >
> > - Rework the monitoring path and move the locks upper in the call
> > stack to fix some potentials race windows (Daniel Lezcano)
> >
> > - Fix lockdep_assert() warning introduced by the lock rework (Daniel
> > Lezcano)
> >
> > - Revert the Mellanox 'hotter thermal zone' feature because it is
> > already handled in the thermal framework core code (Daniel Lezcano)
> >
> > ----------------------------------------------------------------
> > Dan Carpenter (1):
> > thermal/of: Fix error code in of_thermal_zone_find()
> >
> > Daniel Lezcano (42):
> > thermal/of: Rework the thermal device tree initialization
> > thermal/of: Return -ENODEV instead of -EINVAL if registration fails
> > thermal/of: Fix free after use in thermal_of_unregister()
> > thermal/of: Make new code and old code co-exist
> > thermal/drivers/rockchip: Switch to new of API
> > thermal/drivers/uniphier: Switch to new of API
> > thermal/drivers/generic-adc: Switch to new of API
> > thermal/drivers/mmio: Switch to new of API
> > thermal/drivers/tegra: Switch to new of API
> > thermal/drivers/sun8i: Switch to new of API
> > thermal/drivers/sprd: Switch to new of API
> > thermal/drivers/broadcom: Switch to new of API
> > thermal/drivers/qcom: Switch to new of API
> > thermal/drivers/st: Switch to new of API
> > thermal/drivers/amlogic: Switch to new of API
> > thermal/drivers/armada: Switch to new of API
> > thermal/drivers/db8500: Switch to new of API
> > thermal/drivers/imx: Switch to new of API
> > thermal/drivers/rcar: Switch to new of API
> > thermal/drivers/rzg2l: Switch to new of API
> > thermal/drivers/qoriq: Switch to new of API
> > thermal/drivers/mtk: Switch to new of API
> > thermal/drivers/banggap: Switch to new of API
> > thermal/drivers/maxim: Switch to new of API
> > thermal/drivers/hisilicon: Switch to new of API
> > thermal/drivers/ti-soc: Switch to new of API
> > ata/drivers/ahci_imx: Switch to new of thermal API
> > hwmon: pm_bus: core: Switch to new of thermal API
> > hwmon/drivers/core: Switch to new of thermal API
> > iio/drivers/sun4i_gpadc: Switch to new of thermal API
> > Input: sun4i-ts - switch to new of thermal API
> > regulator/drivers/max8976: Switch to new of thermal API
> > thermal/drivers/samsung: Switch to new of thermal API
> > thermal/core: Move set_trip_temp ops to the sysfs code
> > thermal/of: Remove old OF code
> > thermal/core: Rearm the monitoring only one time
> > thermal/core: Rework the monitoring a bit
> > thermal/governors: Group the thermal zone lock inside the
> > throttle function
> > thermal/core: Move the thermal zone lock out of the governors
> > thermal/core: Move the mutex inside the
> > thermal_zone_device_update() function
> > thermal/core: Fix lockdep_assert() warning
> > Revert "mlxsw: core: Add the hottest thermal zone detection"
> >
> > Jiapeng Chong (1):
> > thermal/drivers/qcom/spmi-adc-tm5: Remove unnecessary print
> > function dev_err()
> >
> > drivers/ata/ahci_imx.c | 15 +-
> > drivers/hwmon/hwmon.c | 14 +-
> > drivers/hwmon/pmbus/pmbus_core.c | 10 +-
> > drivers/hwmon/scpi-hwmon.c | 14 +-
> > drivers/iio/adc/sun4i-gpadc-iio.c | 14 +-
> > drivers/input/touchscreen/sun4i-ts.c | 10 +-
> > drivers/net/ethernet/mellanox/mlxsw/core_thermal.c | 77 +-
> > drivers/regulator/max8973-regulator.c | 10 +-
> > drivers/thermal/amlogic_thermal.c | 16 +-
> > drivers/thermal/armada_thermal.c | 12 +-
> > drivers/thermal/broadcom/bcm2711_thermal.c | 14 +-
> > drivers/thermal/broadcom/bcm2835_thermal.c | 14 +-
> > drivers/thermal/broadcom/brcmstb_thermal.c | 20 +-
> > drivers/thermal/broadcom/ns-thermal.c | 50 +-
> > drivers/thermal/broadcom/sr-thermal.c | 16 +-
> > drivers/thermal/db8500_thermal.c | 8 +-
> > drivers/thermal/gov_bang_bang.c | 10 +-
> > drivers/thermal/gov_fair_share.c | 3 +-
> > drivers/thermal/gov_power_allocator.c | 20 +-
> > drivers/thermal/gov_step_wise.c | 10 +-
> > drivers/thermal/hisi_thermal.c | 14 +-
> > drivers/thermal/imx8mm_thermal.c | 14 +-
> > drivers/thermal/imx_sc_thermal.c | 14 +-
> > drivers/thermal/k3_bandgap.c | 12 +-
> > drivers/thermal/k3_j72xx_bandgap.c | 12 +-
> > drivers/thermal/max77620_thermal.c | 8 +-
> > drivers/thermal/mtk_thermal.c | 10 +-
> > drivers/thermal/qcom/qcom-spmi-adc-tm5.c | 23 +-
> > drivers/thermal/qcom/qcom-spmi-temp-alarm.c | 12 +-
> > drivers/thermal/qcom/tsens.c | 16 +-
> > drivers/thermal/qoriq_thermal.c | 12 +-
> > drivers/thermal/rcar_gen3_thermal.c | 16 +-
> > drivers/thermal/rcar_thermal.c | 13 +-
> > drivers/thermal/rockchip_thermal.c | 14 +-
> > drivers/thermal/rzg2l_thermal.c | 10 +-
> > drivers/thermal/samsung/exynos_tmu.c | 24 +-
> > drivers/thermal/sprd_thermal.c | 18 +-
> > drivers/thermal/st/stm_thermal.c | 18 +-
> > drivers/thermal/sun8i_thermal.c | 14 +-
> > drivers/thermal/tegra/soctherm.c | 21 +-
> > drivers/thermal/tegra/tegra-bpmp-thermal.c | 19 +-
> > drivers/thermal/tegra/tegra30-tsensor.c | 12 +-
> > drivers/thermal/thermal-generic-adc.c | 10 +-
> > drivers/thermal/thermal_core.c | 63 +-
> > drivers/thermal/thermal_core.h | 4 +-
> > drivers/thermal/thermal_helpers.c | 73 +-
> > drivers/thermal/thermal_mmio.c | 17 +-
> > drivers/thermal/thermal_of.c | 1148
> > +++++++-------------
> > drivers/thermal/thermal_sysfs.c | 11 +-
> > drivers/thermal/ti-soc-thermal/ti-thermal-common.c | 16 +-
> > drivers/thermal/uniphier_thermal.c | 10 +-
> > include/linux/thermal.h | 85 +-
> > 52 files changed, 796 insertions(+), 1324 deletions(-)
> >
> > --
> > <http://www.linaro.org/> Linaro.org │ Open source software for ARM SoCs
> >
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