Add a weak function to process HWP (Hardware P-states) notifications and
move updating HWP_STATUS MSR to this function.
This allows HWP interrupts to be processed by the intel_pstate driver in
HWP mode by overriding the implementation.
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Acked-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Driver enabling various pieces of Limits Management Hardware(LMh) for cpu
cluster0 and cpu cluster1 namely kick starting monitoring of temperature,
current, battery current violations, enabling reliability algorithm and
setting up various temperature limits.
The following has been explained in the cover letter. I am including this
here so that this remains in the commit message as well.
LMh is a hardware infrastructure on some Qualcomm SoCs that can enforce
temperature and current limits as programmed by software for certain IPs
like CPU. On many newer LMh is configured by firmware/TZ and no programming
is needed from the kernel side. But on certain SoCs like sdm845 the
firmware does not do a complete programming of the h/w. On such soc's
kernel software has to explicitly set up the temperature limits and turn on
various monitoring and enforcing algorithms on the hardware.
Tested-by: Steev Klimaszewski <steev@kali.org> # Lenovo Yoga C630
Signed-off-by: Thara Gopinath <thara.gopinath@linaro.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20210809191605.3742979-3-thara.gopinath@linaro.org
Moved drivers/platform/x86/intel_menlow.c to drivers/thermal/intel.
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Acked-by: Zhang Rui <rui.zhang@intel.com>
Link: https://lore.kernel.org/r/20210816035356.1955982-1-srinivas.pandruvada@linux.intel.com
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
The Tegra soctherm driver prints message about the clamped temperature
trip each time when thermal core disables the low/high trip. The message
is confusing and creates illusion that driver is malfunctioning. Turn that
noisy info message into a debug message.
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20210712002353.17276-1-digetx@gmail.com
Some chrome platform requires IMOK method in coreboot. But these platforms
don't use GDDV data vault in coreboot. As per current code flow, to enable
and use IMOK only, we need to have GDDV support as well in coreboot. This
patch removes the dependency for IMOK from GDDV to enable and use IMOK
independently.
Signed-off-by: Sumeet Pawnikar <sumeet.r.pawnikar@intel.com>
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Acked-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20210716163946.3142-1-sumeet.r.pawnikar@intel.com
The functions get_online_cpus() and put_online_cpus() have been
deprecated during the CPU hotplug rework. They map directly to
cpus_read_lock() and cpus_read_unlock().
Replace deprecated CPU-hotplug functions with the official version.
The behavior remains unchanged.
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: Amit Kucheria <amitk@kernel.org>
Cc: linux-pm@vger.kernel.org
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20210803141621.780504-20-bigeasy@linutronix.de
The TSC id and number of TSC ids should be stored as unsigned int as
they can't be negative. Fix the datatype of the loop counter 'i' and
rcar_gen3_thermal_tsc.id to reflect this.
Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20210804091818.2196806-3-niklas.soderlund+renesas@ragnatech.se
All supported hardware except V3U is capable of generating interrupts
to the CPU when the temperature go below or above a set value. Use this
to implement support for the set_trip() feature of the thermal core on
supported hardware.
The V3U have its interrupts routed to the ECM module and therefore can
not be used to implement set_trip() as the driver can't be made aware of
when the interrupt triggers.
Each TSC is capable of tracking up-to three different temperatures while
only two are needed to implement the tracking of the thermal window.
Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20210804091818.2196806-2-niklas.soderlund+renesas@ragnatech.se
This error path return success but it should propagate the negative
error code from devm_clk_get().
Fixes: 6c247393cf ("thermal: exynos: Add TMU support for Exynos7 SoC")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20210810084413.GA23810@kili
All Tegra thermal drivers support compile-testing, but the drivers are
not available for compile-testing because the whole Kconfig meny entry
depends on ARCH_TEGRA, missing the alternative COMPILE_TEST dependency
option. Correct the Kconfig entry.
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20210617072403.3487-1-digetx@gmail.com
All NVIDIA Tegra30 SoCs have a two-channel on-chip sensor unit which
monitors temperature and voltage of the SoC. Sensors control CPU frequency
throttling, which is activated by hardware once preprogrammed temperature
level is breached, they also send signal to Power Management controller to
perform emergency shutdown on a critical overheat of the SoC die. Add
driver for the Tegra30 TSENSOR module, exposing it as a thermal sensor.
Tested-by: Andreas Westman Dorcsak <hedmoo@yahoo.com> # Asus TF700T
Tested-by: Maxim Schwalm <maxim.schwalm@gmail.com> # Asus TF700T
Tested-by: Svyatoslav Ryhel <clamor95@gmail.com> # Asus TF201T
Tested-by: Ihor Didenko <tailormoon@rambler.ru> # Asus TF300T
Tested-by: Ion Agorria <ion@agorria.com> # Asus TF201T
Tested-by: Matt Merhar <mattmerhar@protonmail.com> # Ouya
Tested-by: Peter Geis <pgwipeout@gmail.com> # Ouya
Acked-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20210616190417.32214-4-digetx@gmail.com
- Add missing MODULE_DEVICE_TABLE for the Spreadtrum sensor (Chunyan
Zhang)
- Export additionnal attributes for the int340x thermal processor
(Srinivas Pandruvada)
- Add SC7280 compatible for the tsens driver (Rajeshwari Ravindra
Kamble)
- Fix kernel documentation for thermal_zone_device_unregister() and
use devm_platform_get_and_ioremap_resource() (Yang Yingliang)
- Fix coefficient calculations for the rcar_gen3 sensor driver (Niklas
Söderlund)
- Fix shadowing variable rcar_gen3_ths_tj_1 (Geert Uytterhoeven)
- Add missing of_node_put() for the iMX and Spreadtrum sensors
(Krzysztof Kozlowski)
- Add tegra3 thermal sensor DT bindings (Dmitry Osipenko)
- Stop the thermal zone monitoring when unregistering it to prevent a
temperature update without the 'get_temp' callback (Dmitry Osipenko)
- Add rk3568 DT bindings, convert bindings to yaml schemas and add the
corresponding compatible in the Rockchip sensor (Ezequiel Garcia)
- Add the sc8180x compatible for the Qualcomm tsensor (Bjorn Andersson)
- Use the find_first_zero_bit() function instead of custom code (Andy
Shevchenko)
- Fix the kernel doc for the device cooling device (Yang Li)
- Reorg the processor thermal int340x to set the scene for the PCI
mmio driver (Srinivas Pandruvada)
- Add PCI MMIO driver for the int340x processor thermal driver
(Srinivas Pandruvada)
- Add hwmon sensors for the mediatek sensor (Frank Wunderlich)
- Fix warning for return value reported by Smatch for the int340x
thermal processor (Srinivas Pandruvada)
- Fix wrong register access and decoding for the int340x thermal
processor (Srinivas Pandruvada)
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Merge tag 'thermal-v5.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thermal/linux
Pull thermal updates from Daniel Lezcano:
- Add rk3568 sensor support (Finley Xiao)
- Add missing MODULE_DEVICE_TABLE for the Spreadtrum sensor (Chunyan
Zhang)
- Export additionnal attributes for the int340x thermal processor
(Srinivas Pandruvada)
- Add SC7280 compatible for the tsens driver (Rajeshwari Ravindra
Kamble)
- Fix kernel documentation for thermal_zone_device_unregister() and use
devm_platform_get_and_ioremap_resource() (Yang Yingliang)
- Fix coefficient calculations for the rcar_gen3 sensor driver (Niklas
Söderlund)
- Fix shadowing variable rcar_gen3_ths_tj_1 (Geert Uytterhoeven)
- Add missing of_node_put() for the iMX and Spreadtrum sensors
(Krzysztof Kozlowski)
- Add tegra3 thermal sensor DT bindings (Dmitry Osipenko)
- Stop the thermal zone monitoring when unregistering it to prevent a
temperature update without the 'get_temp' callback (Dmitry Osipenko)
- Add rk3568 DT bindings, convert bindings to yaml schemas and add the
corresponding compatible in the Rockchip sensor (Ezequiel Garcia)
- Add the sc8180x compatible for the Qualcomm tsensor (Bjorn Andersson)
- Use the find_first_zero_bit() function instead of custom code (Andy
Shevchenko)
- Fix the kernel doc for the device cooling device (Yang Li)
- Reorg the processor thermal int340x to set the scene for the PCI mmio
driver (Srinivas Pandruvada)
- Add PCI MMIO driver for the int340x processor thermal driver
(Srinivas Pandruvada)
- Add hwmon sensors for the mediatek sensor (Frank Wunderlich)
- Fix warning for return value reported by Smatch for the int340x
thermal processor (Srinivas Pandruvada)
- Fix wrong register access and decoding for the int340x thermal
processor (Srinivas Pandruvada)
* tag 'thermal-v5.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thermal/linux: (23 commits)
thermal/drivers/int340x/processor_thermal: Fix tcc setting
thermal/drivers/int340x/processor_thermal: Fix warning for return value
thermal/drivers/mediatek: Add sensors-support
thermal/drivers/int340x/processor_thermal: Add PCI MMIO based thermal driver
thermal/drivers/int340x/processor_thermal: Split enumeration and processing part
thermal: devfreq_cooling: Fix kernel-doc
thermal/drivers/intel/intel_soc_dts_iosf: Switch to use find_first_zero_bit()
dt-bindings: thermal: tsens: Add sc8180x compatible
dt-bindings: rockchip-thermal: Support the RK3568 SoC compatible
dt-bindings: thermal: convert rockchip-thermal to json-schema
thermal/core/thermal_of: Stop zone device before unregistering it
dt-bindings: thermal: Add binding for Tegra30 thermal sensor
thermal/drivers/sprd: Add missing of_node_put for loop iteration
thermal/drivers/imx_sc: Add missing of_node_put for loop iteration
thermal/drivers/rcar_gen3_thermal: Do not shadow rcar_gen3_ths_tj_1
thermal/drivers/rcar_gen3_thermal: Fix coefficient calculations
thermal/drivers/st: Use devm_platform_get_and_ioremap_resource()
thermal/core: Correct function name thermal_zone_device_unregister()
dt-bindings: thermal: tsens: Add compatible string to TSENS binding for SC7280
thermal/drivers/int340x: processor_thermal: Export additional attributes
...
The following fixes are done for tcc sysfs interface:
- TCC is 6 bits only from bit 29-24
- TCC of 0 is valid
- When BIT(31) is set, this register is read only
- Check for invalid tcc value
- Error for negative values
Fixes: fdf4f2fb8e ("drivers: thermal: processor_thermal_device: Export sysfs interface for TCC offset")
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Cc: stable@vger.kernel.org
Acked-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20210628215803.75038-1-srinivas.pandruvada@linux.intel.com
Add a new PCI driver which register a thermal zone and allows to get
notification for threshold violation by a RW trip point. These
notifications are delivered from the device using MSI based
interrupt.
The main difference between this new PCI driver and the existing
one is that the temperature and trip points directly use PCI
MMIO instead of using ACPI methods.
This driver registers a thermal zone "TCPU_PCI" in addition to the
legacy processor thermal device, which uses ACPI companion device
to set name, temperature and trips.
This driver is enabled for AlderLake.
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20210525204811.3793651-3-srinivas.pandruvada@linux.intel.com
Remove enumeration part from the processor_thermal_device to two
different modules. One for ACPI and one for PCI:
ACPI enumeration: int3401_thermal
PCI part: processor_thermal_device_pci_legacy
The current processor_thermal_device now just implements interface
functions to be used by the ACPI and PCI enumeration module. This is
done by:
1. Make functions proc_thermal_add() and proc_thermal_remove() non static
and export them for usage in other processor_thermal_device_pci_legacy.c
and in int3401_thermal.c.
2. Move the sysfs file creation for TCC offset and power limit attribute
group to the proc_thermal_add() from the individual enumeration callbacks
for PCI and ACPI.
3. Create new interface functions proc_thermal_mmio_add() and
proc_thermal_mmio_remove() which will be called from the
processor_thermal_device_pci_legacy module.
4. Export proc_thermal_resume(), so that it can be used by power
management callbacks.
5. Remove special check for double enumeration as it never happens.
While here, fix some cleanup on error conditions in proc_thermal_add().
No functional changes are expected with this change.
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20210525204811.3793651-2-srinivas.pandruvada@linux.intel.com
Fix function name in devfreq_cooling.c comment to remove a
warning found by kernel-doc.
drivers/thermal/devfreq_cooling.c:479: warning: expecting prototype for
devfreq_cooling_em_register_power(). Prototype was for
devfreq_cooling_em_register() instead.
Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Yang Li <yang.lee@linux.alibaba.com>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Lukasz Luba <lukasz.luba@arm.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/1623223350-128104-1-git-send-email-yang.lee@linux.alibaba.com
Zone device is enabled after thermal_zone_of_sensor_register() completion,
but it's not disabled before senor is unregistered, leaving temperature
polling active. This results in accessing a disabled zone device and
produces a warning about this problem. Stop zone device before
unregistering it in order to fix this "use-after-free" problem.
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20210616190417.32214-3-digetx@gmail.com
- Changes to core scheduling facilities:
- Add "Core Scheduling" via CONFIG_SCHED_CORE=y, which enables
coordinated scheduling across SMT siblings. This is a much
requested feature for cloud computing platforms, to allow
the flexible utilization of SMT siblings, without exposing
untrusted domains to information leaks & side channels, plus
to ensure more deterministic computing performance on SMT
systems used by heterogenous workloads.
There's new prctls to set core scheduling groups, which
allows more flexible management of workloads that can share
siblings.
- Fix task->state access anti-patterns that may result in missed
wakeups and rename it to ->__state in the process to catch new
abuses.
- Load-balancing changes:
- Tweak newidle_balance for fair-sched, to improve
'memcache'-like workloads.
- "Age" (decay) average idle time, to better track & improve workloads
such as 'tbench'.
- Fix & improve energy-aware (EAS) balancing logic & metrics.
- Fix & improve the uclamp metrics.
- Fix task migration (taskset) corner case on !CONFIG_CPUSET.
- Fix RT and deadline utilization tracking across policy changes
- Introduce a "burstable" CFS controller via cgroups, which allows
bursty CPU-bound workloads to borrow a bit against their future
quota to improve overall latencies & batching. Can be tweaked
via /sys/fs/cgroup/cpu/<X>/cpu.cfs_burst_us.
- Rework assymetric topology/capacity detection & handling.
- Scheduler statistics & tooling:
- Disable delayacct by default, but add a sysctl to enable
it at runtime if tooling needs it. Use static keys and
other optimizations to make it more palatable.
- Use sched_clock() in delayacct, instead of ktime_get_ns().
- Misc cleanups and fixes.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'sched-core-2021-06-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler udpates from Ingo Molnar:
- Changes to core scheduling facilities:
- Add "Core Scheduling" via CONFIG_SCHED_CORE=y, which enables
coordinated scheduling across SMT siblings. This is a much
requested feature for cloud computing platforms, to allow the
flexible utilization of SMT siblings, without exposing untrusted
domains to information leaks & side channels, plus to ensure more
deterministic computing performance on SMT systems used by
heterogenous workloads.
There are new prctls to set core scheduling groups, which allows
more flexible management of workloads that can share siblings.
- Fix task->state access anti-patterns that may result in missed
wakeups and rename it to ->__state in the process to catch new
abuses.
- Load-balancing changes:
- Tweak newidle_balance for fair-sched, to improve 'memcache'-like
workloads.
- "Age" (decay) average idle time, to better track & improve
workloads such as 'tbench'.
- Fix & improve energy-aware (EAS) balancing logic & metrics.
- Fix & improve the uclamp metrics.
- Fix task migration (taskset) corner case on !CONFIG_CPUSET.
- Fix RT and deadline utilization tracking across policy changes
- Introduce a "burstable" CFS controller via cgroups, which allows
bursty CPU-bound workloads to borrow a bit against their future
quota to improve overall latencies & batching. Can be tweaked via
/sys/fs/cgroup/cpu/<X>/cpu.cfs_burst_us.
- Rework assymetric topology/capacity detection & handling.
- Scheduler statistics & tooling:
- Disable delayacct by default, but add a sysctl to enable it at
runtime if tooling needs it. Use static keys and other
optimizations to make it more palatable.
- Use sched_clock() in delayacct, instead of ktime_get_ns().
- Misc cleanups and fixes.
* tag 'sched-core-2021-06-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (72 commits)
sched/doc: Update the CPU capacity asymmetry bits
sched/topology: Rework CPU capacity asymmetry detection
sched/core: Introduce SD_ASYM_CPUCAPACITY_FULL sched_domain flag
psi: Fix race between psi_trigger_create/destroy
sched/fair: Introduce the burstable CFS controller
sched/uclamp: Fix uclamp_tg_restrict()
sched/rt: Fix Deadline utilization tracking during policy change
sched/rt: Fix RT utilization tracking during policy change
sched: Change task_struct::state
sched,arch: Remove unused TASK_STATE offsets
sched,timer: Use __set_current_state()
sched: Add get_current_state()
sched,perf,kvm: Fix preemption condition
sched: Introduce task_is_running()
sched: Unbreak wakeups
sched/fair: Age the average idle time
sched/cpufreq: Consider reduced CPU capacity in energy calculation
sched/fair: Take thermal pressure into account while estimating energy
thermal/cpufreq_cooling: Update offline CPUs per-cpu thermal_pressure
sched/fair: Return early from update_tg_cfs_load() if delta == 0
...
This commit in sched/urgent moved the cfs_rq_is_decayed() function:
a7b359fc6a37: ("sched/fair: Correctly insert cfs_rq's to list on unthrottle")
and this fresh commit in sched/core modified it in the old location:
9e077b52d86a: ("sched/pelt: Check that *_avg are null when *_sum are")
Merge the two variants.
Conflicts:
kernel/sched/fair.c
Signed-off-by: Ingo Molnar <mingo@kernel.org>
The thermal pressure signal gives information to the scheduler about
reduced CPU capacity due to thermal. It is based on a value stored in
a per-cpu 'thermal_pressure' variable. The online CPUs will get the
new value there, while the offline won't. Unfortunately, when the CPU
is back online, the value read from per-cpu variable might be wrong
(stale data). This might affect the scheduler decisions, since it
sees the CPU capacity differently than what is actually available.
Fix it by making sure that all online+offline CPUs would get the
proper value in their per-cpu variable when thermal framework sets
capping.
Fixes: f12e4f66ab ("thermal/cpu-cooling: Update thermal pressure in case of a maximum frequency capping")
Signed-off-by: Lukasz Luba <lukasz.luba@arm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Link: https://lore.kernel.org/r/20210614191030.22241-1-lukasz.luba@arm.com
Early exits from for_each_available_child_of_node() should decrement the
node reference counter. Reported by Coccinelle:
drivers/thermal/sprd_thermal.c:387:1-23: WARNING:
Function "for_each_child_of_node" should have of_node_put() before goto around lines 391.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Acked-by: Chunyan Zhang <zhang.lyra@gmail.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20210614192230.19248-2-krzysztof.kozlowski@canonical.com
Early exits from for_each_available_child_of_node() should decrement the
node reference counter. Reported by Coccinelle:
drivers/thermal/imx_sc_thermal.c:93:1-33: WARNING:
Function "for_each_available_child_of_node" should have of_node_put() before return around line 97.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Reviewed-by: Jacky Bai <ping.bai@nxp.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20210614192230.19248-1-krzysztof.kozlowski@canonical.com
With -Wshadow:
drivers/thermal/rcar_gen3_thermal.c: In function ‘rcar_gen3_thermal_probe’:
drivers/thermal/rcar_gen3_thermal.c:310:13: warning: declaration of ‘rcar_gen3_ths_tj_1’ shadows a global declaration [-Wshadow]
310 | const int *rcar_gen3_ths_tj_1 = of_device_get_match_data(dev);
| ^~~~~~~~~~~~~~~~~~
drivers/thermal/rcar_gen3_thermal.c:246:18: note: shadowed declaration is here
246 | static const int rcar_gen3_ths_tj_1 = 126;
| ^~~~~~~~~~~~~~~~~~
To add to the confusion, the local variable has a different type.
Fix the shadowing by renaming the local variable to ths_tj_1.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/9ea7e65d0331daba96f9a7925cb3d12d2170efb1.1623076804.git.geert+renesas@glider.be
The fixed value of 157 used in the calculations are only correct for
M3-W, on other Gen3 SoC it should be 167. The constant can be derived
correctly from the static TJ_3 constant and the SoC specific TJ_1 value.
Update the calculation be correct on all Gen3 SoCs.
Fixes: 4eb39f79ef ("thermal: rcar_gen3_thermal: Update value of Tj_1")
Reported-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20210605085211.564909-1-niklas.soderlund+renesas@ragnatech.se
Use devm_platform_get_and_ioremap_resource() to simplify
code and remove error message which within
devm_platform_get_and_ioremap_resource() already.
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20210605120205.2459578-1-yangyingliang@huawei.com
Fix the following make W=1 kernel build warning:
drivers/thermal/thermal_core.c:1376: warning: expecting prototype for thermal_device_unregister(). Prototype was for thermal_zone_device_unregister() instead
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20210517051020.3463536-1-yangyingliang@huawei.com
Export additional attributes:
ddr_data_rate (RO) : Show current DDR (Double Data Rate) data rate.
rfi_restriction (RW) : Show or set current state for RFI (Radio
Frequency Interference) protection.
These attributes use mailbox commands to get/set information. Here
command codes are:
0x0007: Read RFI restriction
0x0107: Read DDR data rate
0x0008: Write RFI restriction
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20210517061441.1921901-3-srinivas.pandruvada@linux.intel.com
MODULE_DEVICE_TABLE is used to extract the device information out of the
driver and builds a table when being compiled. If using this macro,
kernel can find the driver if available when the device is plugged in,
and then loads that driver and initializes the device.
Fixes: 554fdbaf19 ("thermal: sprd: Add Spreadtrum thermal driver support")
Signed-off-by: Chunyan Zhang <chunyan.zhang@unisoc.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20210512093752.243168-1-zhang.lyra@gmail.com
The RK3568 SoCs have two Temperature Sensors, channel 0 is for CPU,
channel 1 is for GPU.
Signed-off-by: Finley Xiao <finley.xiao@rock-chips.com>
Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20210506175514.168365-5-ezequiel@collabora.com
MSR_AMD64_SEV even though the spec clearly states so, and check CPUID
bits first.
- Send only one signal to a task when it is a SEGV_PKUERR si_code type.
- Do away with all the wankery of reserving X amount of memory in
the first megabyte to prevent BIOS corrupting it and simply and
unconditionally reserve the whole first megabyte.
- Make alternatives NOP optimization work at an arbitrary position
within the patched sequence because the compiler can put single-byte
NOPs for alignment anywhere in the sequence (32-bit retpoline), vs our
previous assumption that the NOPs are only appended.
- Force-disable ENQCMD[S] instructions support and remove update_pasid()
because of insufficient protection against FPU state modification in an
interrupt context, among other xstate horrors which are being addressed
at the moment. This one limits the fallout until proper enablement.
- Use cpu_feature_enabled() in the idxd driver so that it can be
build-time disabled through the defines in .../asm/disabled-features.h.
- Fix LVT thermal setup for SMI delivery mode by making sure the APIC
LVT value is read before APIC initialization so that softlockups during
boot do not happen at least on one machine.
- Mark all legacy interrupts as legacy vectors when the IO-APIC is
disabled and when all legacy interrupts are routed through the PIC.
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Merge tag 'x86_urgent_for_v5.13-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Borislav Petkov:
"A bunch of x86/urgent stuff accumulated for the last two weeks so
lemme unload it to you.
It should be all totally risk-free, of course. :-)
- Fix out-of-spec hardware (1st gen Hygon) which does not implement
MSR_AMD64_SEV even though the spec clearly states so, and check
CPUID bits first.
- Send only one signal to a task when it is a SEGV_PKUERR si_code
type.
- Do away with all the wankery of reserving X amount of memory in the
first megabyte to prevent BIOS corrupting it and simply and
unconditionally reserve the whole first megabyte.
- Make alternatives NOP optimization work at an arbitrary position
within the patched sequence because the compiler can put
single-byte NOPs for alignment anywhere in the sequence (32-bit
retpoline), vs our previous assumption that the NOPs are only
appended.
- Force-disable ENQCMD[S] instructions support and remove
update_pasid() because of insufficient protection against FPU state
modification in an interrupt context, among other xstate horrors
which are being addressed at the moment. This one limits the
fallout until proper enablement.
- Use cpu_feature_enabled() in the idxd driver so that it can be
build-time disabled through the defines in disabled-features.h.
- Fix LVT thermal setup for SMI delivery mode by making sure the APIC
LVT value is read before APIC initialization so that softlockups
during boot do not happen at least on one machine.
- Mark all legacy interrupts as legacy vectors when the IO-APIC is
disabled and when all legacy interrupts are routed through the PIC"
* tag 'x86_urgent_for_v5.13-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/sev: Check SME/SEV support in CPUID first
x86/fault: Don't send SIGSEGV twice on SEGV_PKUERR
x86/setup: Always reserve the first 1M of RAM
x86/alternative: Optimize single-byte NOPs at an arbitrary position
x86/cpufeatures: Force disable X86_FEATURE_ENQCMD and remove update_pasid()
dmaengine: idxd: Use cpu_feature_enabled()
x86/thermal: Fix LVT thermal setup for SMI delivery mode
x86/apic: Mark _all_ legacy interrupts when IO/APIC is missing
There are machines out there with added value crap^WBIOS which provide an
SMI handler for the local APIC thermal sensor interrupt. Out of reset,
the BSP on those machines has something like 0x200 in that APIC register
(timestamps left in because this whole issue is timing sensitive):
[ 0.033858] read lvtthmr: 0x330, val: 0x200
which means:
- bit 16 - the interrupt mask bit is clear and thus that interrupt is enabled
- bits [10:8] have 010b which means SMI delivery mode.
Now, later during boot, when the kernel programs the local APIC, it
soft-disables it temporarily through the spurious vector register:
setup_local_APIC:
...
/*
* If this comes from kexec/kcrash the APIC might be enabled in
* SPIV. Soft disable it before doing further initialization.
*/
value = apic_read(APIC_SPIV);
value &= ~APIC_SPIV_APIC_ENABLED;
apic_write(APIC_SPIV, value);
which means (from the SDM):
"10.4.7.2 Local APIC State After It Has Been Software Disabled
...
* The mask bits for all the LVT entries are set. Attempts to reset these
bits will be ignored."
And this happens too:
[ 0.124111] APIC: Switch to symmetric I/O mode setup
[ 0.124117] lvtthmr 0x200 before write 0xf to APIC 0xf0
[ 0.124118] lvtthmr 0x10200 after write 0xf to APIC 0xf0
This results in CPU 0 soft lockups depending on the placement in time
when the APIC soft-disable happens. Those soft lockups are not 100%
reproducible and the reason for that can only be speculated as no one
tells you what SMM does. Likely, it confuses the SMM code that the APIC
is disabled and the thermal interrupt doesn't doesn't fire at all,
leading to CPU 0 stuck in SMM forever...
Now, before
4f432e8bb1 ("x86/mce: Get rid of mcheck_intel_therm_init()")
due to how the APIC_LVTTHMR was read before APIC initialization in
mcheck_intel_therm_init(), it would read the value with the mask bit 16
clear and then intel_init_thermal() would replicate it onto the APs and
all would be peachy - the thermal interrupt would remain enabled.
But that commit moved that reading to a later moment in
intel_init_thermal(), resulting in reading APIC_LVTTHMR on the BSP too
late and with its interrupt mask bit set.
Thus, revert back to the old behavior of reading the thermal LVT
register before the APIC gets initialized.
Fixes: 4f432e8bb1 ("x86/mce: Get rid of mcheck_intel_therm_init()")
Reported-by: James Feeney <james@nurealm.net>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: <stable@vger.kernel.org>
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Link: https://lkml.kernel.org/r/YKIqDdFNaXYd39wz@zn.tnic
Return -EINVAL when args is invalid instead of 'ret' which is set to
zero by a previous successful call to a function.
Fixes: ca66dca5ed ("thermal: qcom: add support for adc-tm5 PMIC thermal monitor")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20210527092640.2070555-1-yangyingliang@huawei.com
Fix function name in ti-bandgap.c kernel-doc comment
to remove a warning.
drivers/thermal/ti-soc-thermal/ti-bandgap.c:787: warning: expecting
prototype for ti_bandgap_alert_init(). Prototype was for
ti_bandgap_talert_init() instead.
Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Yang Li <yang.lee@linux.alibaba.com>
Acked-by: Suman Anna <s-anna@ti.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/1621851963-36548-1-git-send-email-yang.lee@linux.alibaba.com
After commit 81ad4276b5 ("Thermal: Ignore invalid trip points") all
user_space governor notifications via RW trip point is broken in intel
thermal drivers. This commits marks trip_points with value of 0 during
call to thermal_zone_device_register() as invalid. RW trip points can be
0 as user space will set the correct trip temperature later.
During driver init, x86_package_temp and all int340x drivers sets RW trip
temperature as 0. This results in all these trips marked as invalid by
the thermal core.
To fix this initialize RW trips to THERMAL_TEMP_INVALID instead of 0.
Cc: <stable@vger.kernel.org>
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20210430122343.1789899-1-srinivas.pandruvada@linux.intel.com
- Fix spellos in comments for the tegra and sun8i (Bhaskar Chowdhury)
- Add the missing fifth node on the rcar_gen3 sensor (Niklas
Söderlund)
- Remove duplicate include in ti-bandgap (Zhang Yunkai)
- Assign error code in the error path in the function
thermal_of_populate_bind_params() (Jia-Ju Bai)
- Fix spelling mistake in a comment 'disabed' -> 'disabled' (Colin Ian
King)
- Use the device name instead of auto-numbering for a better
identification of the cooling device (Daniel Lezcano)
- Improve a bit the division accuracy in the power allocator governor
(Jeson Gao)
- Enable the missing third sensor on msm8976 (Konrad Dybcio)
- Add QCom tsens driver co-maintainer (Thara Gopinath)
- Fix memory leak and use after free errors in the core code (Daniel
Lezcano)
- Add the MDM9607 compatible bindings (Konrad Dybcio)
- Fix trivial spello in the copyright name for Hisilicon (Hao Fang)
- Fix negative index array access when converting the frequency to
power in the energy model (Brian-sy Yang)
- Add support for Gen2 new PMIC support for Qcom SPMI (David Collins)
- Update maintainer file for CPU cooling device section (Lukasz Luba)
- Fix missing put_device on error in the Qcom tsens driver (Guangqing
Zhu)
- Add compatible DT binding for sm8350 (Robert Foss)
- Add support for the MDM9607's tsens driver (Konrad Dybcio)
- Remove duplicate error messages in thermal_mmio and the bcm2835
driver (Ruiqi Gong)
- Add the Thermal Temperature Cooling driver (Zhang Rui)
- Remove duplicate error messages in the Hisilicon sensor driver (Ye
Bin)
- Use the devm_platform_ioremap_resource_byname() function instead of
a couple of corresponding calls (dingsenjie)
- Sort the headers alphabetically in the ti-bandgap driver (Zhen Lei)
- Add missing property in the DT thermal sensor binding (Rafał
Miłecki)
- Remove dead code in the ti-bandgap sensor driver (Lin Ruizhe)
- Convert the BRCM DT bindings to the yaml schema (Rafał Miłecki)
- Replace the thermal_notify_framework() call by a call to the
thermal_zone_device_update() function. Remove the function as well
as the corresponding documentation (Thara Gopinath)
- Add support for the ipq8064-tsens sensor along with a set of
cleanups and code preparation (Ansuel Smith)
- Add a lockless __thermal_cdev_update() function to improve the
locking scheme in the core code and governors (Lukasz Luba)
- Fix multiple cooling device notification changes (Lukasz Luba)
- Remove unneeded variable initialization (Colin Ian King)
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Merge tag 'thermal-v5.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thermal/linux
Pull thermal updates from Daniel Lezcano:
- Remove duplicate error message for the amlogic driver (Tang Bin)
- Fix spellos in comments for the tegra and sun8i (Bhaskar Chowdhury)
- Add the missing fifth node on the rcar_gen3 sensor (Niklas Söderlund)
- Remove duplicate include in ti-bandgap (Zhang Yunkai)
- Assign error code in the error path in the function
thermal_of_populate_bind_params() (Jia-Ju Bai)
- Fix spelling mistake in a comment 'disabed' -> 'disabled' (Colin Ian
King)
- Use the device name instead of auto-numbering for a better
identification of the cooling device (Daniel Lezcano)
- Improve a bit the division accuracy in the power allocator governor
(Jeson Gao)
- Enable the missing third sensor on msm8976 (Konrad Dybcio)
- Add QCom tsens driver co-maintainer (Thara Gopinath)
- Fix memory leak and use after free errors in the core code (Daniel
Lezcano)
- Add the MDM9607 compatible bindings (Konrad Dybcio)
- Fix trivial spello in the copyright name for Hisilicon (Hao Fang)
- Fix negative index array access when converting the frequency to
power in the energy model (Brian-sy Yang)
- Add support for Gen2 new PMIC support for Qcom SPMI (David Collins)
- Update maintainer file for CPU cooling device section (Lukasz Luba)
- Fix missing put_device on error in the Qcom tsens driver (Guangqing
Zhu)
- Add compatible DT binding for sm8350 (Robert Foss)
- Add support for the MDM9607's tsens driver (Konrad Dybcio)
- Remove duplicate error messages in thermal_mmio and the bcm2835
driver (Ruiqi Gong)
- Add the Thermal Temperature Cooling driver (Zhang Rui)
- Remove duplicate error messages in the Hisilicon sensor driver (Ye
Bin)
- Use the devm_platform_ioremap_resource_byname() function instead of a
couple of corresponding calls (dingsenjie)
- Sort the headers alphabetically in the ti-bandgap driver (Zhen Lei)
- Add missing property in the DT thermal sensor binding (Rafał Miłecki)
- Remove dead code in the ti-bandgap sensor driver (Lin Ruizhe)
- Convert the BRCM DT bindings to the yaml schema (Rafał Miłecki)
- Replace the thermal_notify_framework() call by a call to the
thermal_zone_device_update() function. Remove the function as well as
the corresponding documentation (Thara Gopinath)
- Add support for the ipq8064-tsens sensor along with a set of cleanups
and code preparation (Ansuel Smith)
- Add a lockless __thermal_cdev_update() function to improve the
locking scheme in the core code and governors (Lukasz Luba)
- Fix multiple cooling device notification changes (Lukasz Luba)
- Remove unneeded variable initialization (Colin Ian King)
* tag 'thermal-v5.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thermal/linux: (55 commits)
thermal/drivers/mtk_thermal: Remove redundant initializations of several variables
thermal/core/power allocator: Use the lockless __thermal_cdev_update() function
thermal/core/fair share: Use the lockless __thermal_cdev_update() function
thermal/core/fair share: Lock the thermal zone while looping over instances
thermal/core/power_allocator: Update once cooling devices when temp is low
thermal/core/power_allocator: Maintain the device statistics from going stale
thermal/core: Create a helper __thermal_cdev_update() without a lock
dt-bindings: thermal: tsens: Document ipq8064 bindings
thermal/drivers/tsens: Add support for ipq8064-tsens
thermal/drivers/tsens: Drop unused define for msm8960
thermal/drivers/tsens: Replace custom 8960 apis with generic apis
thermal/drivers/tsens: Fix bug in sensor enable for msm8960
thermal/drivers/tsens: Use init_common for msm8960
thermal/drivers/tsens: Add VER_0 tsens version
thermal/drivers/tsens: Convert msm8960 to reg_field
thermal/drivers/tsens: Don't hardcode sensor slope
Documentation: driver-api: thermal: Remove thermal_notify_framework from documentation
thermal/core: Remove thermal_notify_framework
iwlwifi: mvm: tt: Replace thermal_notify_framework
dt-bindings: thermal: brcm,ns-thermal: Convert to the json-schema
...
Several variables are being initialized with values that is never
read and being updated later with a new value. The initializations
are redundant and can be removed.
Addresses-Coverity: ("Unused value")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20210422120412.246291-1-colin.king@canonical.com
Use the new helper function and avoid unnecessery second lock/unlock,
which was present in old approach with thermal_cdev_update().
Signed-off-by: Lukasz Luba <lukasz.luba@arm.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20210422153624.6074-4-lukasz.luba@arm.com
Use the new helper function and avoid unnecessery second lock/unlock,
which was present in old approach with thermal_cdev_update().
Signed-off-by: Lukasz Luba <lukasz.luba@arm.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20210422153624.6074-3-lukasz.luba@arm.com
The tz->lock must be hold during the looping over the instances in that
thermal zone. This lock was missing in the governor code since the
beginning, so it's hard to point into a particular commit.
CC: stable@vger.kernel.org # 4.4+
Signed-off-by: Lukasz Luba <lukasz.luba@arm.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20210422153624.6074-2-lukasz.luba@arm.com
The cooling device state change generates an event, also when there is no
need, because temperature is low and device is not throttled. Avoid to
unnecessary update the cooling device which means also not sending event.
The cooling device state has not changed because the temperature is still
below the first activation trip point value, so we can do this.
Add a tracking mechanism to make sure it updates cooling devices only
once - when the temperature dropps below first trip point.
Reported-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Lukasz Luba <lukasz.luba@arm.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20210422114308.29684-4-lukasz.luba@arm.com
When the temperature is below the first activation trip point the cooling
devices are not checked, so they cannot maintain fresh statistics. It
leads into the situation, when temperature crosses first trip point, the
statistics are stale and show state for very long period. This has impact
on IPA algorithm calculation and wrong decisions. Thus, check the cooling
devices even when the temperature is low, to refresh these statistics.
Signed-off-by: Lukasz Luba <lukasz.luba@arm.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20210422114308.29684-3-lukasz.luba@arm.com
There is a need to have a helper function which updates cooling device
state from the governors code. With this change governor can use
lock and unlock while calling helper function. This avoid unnecessary
second time lock/unlock which was in previous solution present in
governor implementation. This new helper function must be called
with mutex 'cdev->lock' hold.
The changed been discussed and part of code presented in thread:
https://lore.kernel.org/linux-pm/20210419084536.25000-1-lukasz.luba@arm.com/
Co-developed-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Lukasz Luba <lukasz.luba@arm.com>
Link: https://lore.kernel.org/r/20210422114308.29684-2-lukasz.luba@arm.com
Add support for tsens present in ipq806x SoCs based on generic msm8960
tsens driver.
Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>
Reviewed-by: Thara Gopinath <thara.gopinath@linaro.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20210420183343.2272-9-ansuelsmth@gmail.com
Drop unused define for msm8960 replaced by generic api and reg_field.
Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>
Reviewed-by: Thara Gopinath <thara.gopinath@linaro.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20210420183343.2272-8-ansuelsmth@gmail.com
Rework calibrate function to use common function. Derive the offset from
a missing hardcoded slope table and the data from the nvmem calib
efuses.
Drop custom get_temp function and use generic api.
Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>
Acked-by: Thara Gopinath <thara.gopinath@linaro.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20210420183343.2272-7-ansuelsmth@gmail.com
Device based on tsens VER_0 contains a hardware bug that results in some
problem with sensor enablement. Sensor id 6-11 can't be enabled
selectively and all of them must be enabled in one step.
Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>
Acked-by: Thara Gopinath <thara.gopinath@linaro.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20210420183343.2272-6-ansuelsmth@gmail.com
Use init_common and drop custom init for msm8960.
Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>
Reviewed-by: Thara Gopinath <thara.gopinath@linaro.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20210420183343.2272-5-ansuelsmth@gmail.com
VER_0 is used to describe device based on tsens version before v0.1.
These device are devices based on msm8960 for example apq8064 or
ipq806x. Add support for VER_0 in tsens.c and set the right tsens feat
in tsens-8960.c file.
Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>
Reviewed-by: Thara Gopinath <thara.gopinath@linaro.org>
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20210420183343.2272-4-ansuelsmth@gmail.com
Convert msm9860 driver to reg_field to use the init_common
function.
Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>
Acked-by: Thara Gopinath <thara.gopinath@linaro.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20210420183343.2272-3-ansuelsmth@gmail.com
Function compute_intercept_slope hardcode the sensor slope to
SLOPE_DEFAULT. Change this and use the default value only if a slope is
not defined. This is needed for tsens VER_0 that has a hardcoded slope
table.
Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>
Reviewed-by: Thara Gopinath <thara.gopinath@linaro.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20210420183343.2272-2-ansuelsmth@gmail.com
thermal_notify_framework just updates for a single trip point where as
thermal_zone_device_update does other bookkeeping like updating the
temperature of the thermal zone and setting the next trip point. The only
driver that was using thermal_notify_framework was updated in the previous
patch to use thermal_zone_device_update instead. Since there are no users
for thermal_notify_framework remove it.
Signed-off-by: Thara Gopinath <thara.gopinath@linaro.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20210122023406.3500424-3-thara.gopinath@linaro.org
The function ti_bandgap_restore_ctxt() restores the context at resume
time. It checks if the sensor has a counter, reads the register but
does nothing with the value.
The block was probably omitted by the commit b87ea759a4.
Remove the unused variable as well as the block using it as we can
consider it as dead code.
Reported-by: Hulk Robot <hulkci@huawei.com>
Fixes: b87ea759a4 ("staging: omap-thermal: fix context restore function")
Signed-off-by: Lin Ruizhe <linruizhe@huawei.com>
Reviewed-by: Tony Lindgren <tony@atomide.com>
Tested-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20210421084256.57591-1-linruizhe@huawei.com
For the sake of lisibility, reorder the header files alphabetically.
Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
Reviewed-by: Keerthy <j-keerthy@ti.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20210406091912.2583-2-thunder.leizhen@huawei.com
Use the devm_platform_ioremap_resource_byname() helper instead of
calling platform_get_resource_byname() and devm_ioremap_resource()
separately.
Signed-off-by: dingsenjie <dingsenjie@yulong.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20210414063943.96244-1-dingsenjie@163.com
There is a error message within devm_ioremap_resource
already, so remove the dev_err call to avoid redundant
error message.
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Ye Bin <yebin10@huawei.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20210409075224.2109503-1-yebin10@huawei.com
On Intel processors, the core frequency can be reduced below OS request,
when the current temperature reaches the TCC (Thermal Control Circuit)
activation temperature.
The default TCC activation temperature is specified by
MSR_IA32_TEMPERATURE_TARGET. However, it can be adjusted by specifying an
offset in degrees C, using the TCC Offset bits in the same MSR register.
This patch introduces a cooling devices driver that utilizes the TCC
Offset feature. The bigger the current cooling state is, the lower the
effective TCC activation temperature is, so that the processors can be
throttled earlier before system critical overheats.
Note that, on different platforms, the behavior might be different on
how fast the setting takes effect, and how much the CPU frequency is
reduced.
This patch has been tested on a KabyLake mobile platform from me, and also
on a CometLake platform from Doug.
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Tested by: Doug Smythies <dsmythies@telus.net>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20210412125901.12549-1-rui.zhang@intel.com
There is a error message within devm_ioremap_resource already, so
remove the dev_err call to avoid redundant error message.
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Ruiqi Gong <gongruiqi1@huawei.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20210408100329.7585-1-gongruiqi1@huawei.com
There is a error message within devm_ioremap_resource already, so
remove the dev_err call to avoid redundant error message.
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Ruiqi Gong <gongruiqi1@huawei.com>
Acked-by: Talel Shenhar <talel@amazon.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20210408100144.7494-1-gongruiqi1@huawei.com
MDM9607 TSENS IP is very similar to the one of MSM8916, with
minor adjustments to various tuning values.
Signed-off-by: Konrad Dybcio <konrad.dybcio@somainline.org>
Acked-by: Thara Gopinath <thara.gopinath@linaro.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20210319220802.198215-2-konrad.dybcio@somainline.org
Fixes coccicheck error:
drivers/thermal/qcom/tsens.c:759:4-10: ERROR: missing put_device; call
of_find_device_by_node on line 715, but without a corresponding object
release within this function.
Fixes: a7ff829761 ("drivers: thermal: tsens: Merge tsens-common.c into tsens.c")
Signed-off-by: Guangqing Zhu <zhuguangqing83@gmail.com>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20210404125431.12208-1-zhuguangqing83@gmail.com
Add support for TEMP_ALARM GEN2 PMIC peripherals with digital
major revision 1. This revision utilizes a different temperature
threshold mapping than earlier revisions.
Signed-off-by: David Collins <collinsd@codeaurora.org>
Signed-off-by: Guru Das Srinagesh <gurus@codeaurora.org>
Reviewed-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/69c90a004b3f5b7ae282f5ec5ca2920a48f23e02.1596040416.git.gurus@codeaurora.org
Slab OOB issue is scanned by KASAN in cpu_power_to_freq().
If power is limited below the power of OPP0 in EM table,
it will cause slab out-of-bound issue with negative array
index.
Return the lowest frequency if limited power cannot found
a suitable OPP in EM table to fix this issue.
Backtrace:
[<ffffffd02d2a37f0>] die+0x104/0x5ac
[<ffffffd02d2a5630>] bug_handler+0x64/0xd0
[<ffffffd02d288ce4>] brk_handler+0x160/0x258
[<ffffffd02d281e5c>] do_debug_exception+0x248/0x3f0
[<ffffffd02d284488>] el1_dbg+0x14/0xbc
[<ffffffd02d75d1d4>] __kasan_report+0x1dc/0x1e0
[<ffffffd02d75c2e0>] kasan_report+0x10/0x20
[<ffffffd02d75def8>] __asan_report_load8_noabort+0x18/0x28
[<ffffffd02e6fce5c>] cpufreq_power2state+0x180/0x43c
[<ffffffd02e6ead80>] power_actor_set_power+0x114/0x1d4
[<ffffffd02e6fac24>] allocate_power+0xaec/0xde0
[<ffffffd02e6f9f80>] power_allocator_throttle+0x3ec/0x5a4
[<ffffffd02e6ea888>] handle_thermal_trip+0x160/0x294
[<ffffffd02e6edd08>] thermal_zone_device_check+0xe4/0x154
[<ffffffd02d351cb4>] process_one_work+0x5e4/0xe28
[<ffffffd02d352f44>] worker_thread+0xa4c/0xfac
[<ffffffd02d360124>] kthread+0x33c/0x358
[<ffffffd02d289940>] ret_from_fork+0xc/0x18
Fixes: 371a3bc79c ("thermal/drivers/cpufreq_cooling: Fix wrong frequency converted from power")
Signed-off-by: brian-sy yang <brian-sy.yang@mediatek.com>
Signed-off-by: Michael Kao <michael.kao@mediatek.com>
Reviewed-by: Lukasz Luba <lukasz.luba@arm.com>
Cc: stable@vger.kernel.org #v5.7
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20201229050831.19493-1-michael.kao@mediatek.com
When the function successfully finishes it logs an information about
the registration of the cooling device and use its name to build the
message. Unfortunately it was freed right before:
drivers/thermal/cpuidle_cooling.c:218 __cpuidle_cooling_register()
warn: 'name' was already freed.
Fix this by freeing after the message happened.
Fixes: 6fd1b186d9 ("thermal/drivers/cpuidle_cooling: Use device name instead of auto-numbering")
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Link: https://lore.kernel.org/r/20210319202522.891061-1-daniel.lezcano@linaro.org
The following error is reported by kbuild:
smatch warnings:
drivers/thermal/devfreq_cooling.c:433 of_devfreq_cooling_register_power() warn: passing zero to 'ERR_PTR'
Fix the error code by the setting the 'err' variable instead of 'cdev'.
Fixes: f8d354e821 ("thermal/drivers/devfreq_cooling: Use device name instead of auto-numbering")
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20210319202424.890968-1-daniel.lezcano@linaro.org
Fix the following error:
smatch warnings:
drivers/thermal/thermal_core.c:1020 __thermal_cooling_device_register() warn: possible memory leak of 'cdev'
by freeing the cdev when exiting the function in the error path.
Fixes: 5848376181 ("thermal/drivers/core: Use a char pointer for the cooling device name")
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20210319202257.890848-1-daniel.lezcano@linaro.org
The sensor *is* in fact used and does report temperature.
Signed-off-by: Konrad Dybcio <konrad.dybcio@somainline.org>
Acked-by: Thara Gopinath <thara.gopinath@linaro.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20210225213119.116550-1-konrad.dybcio@somainline.org
There is a possible chance that some cooling device stats buffer
allocation fails due to very high cooling device max state value.
Later cooling device update sysfs can try to access stats data
for the same cooling device. It will lead to NULL pointer
dereference issue.
Add a NULL pointer check before accessing thermal cooling device
stats data. It fixes the following bug
[ 26.812833] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000004
[ 27.122960] Call trace:
[ 27.122963] do_raw_spin_lock+0x18/0xe8
[ 27.122966] _raw_spin_lock+0x24/0x30
[ 27.128157] thermal_cooling_device_stats_update+0x24/0x98
[ 27.128162] cur_state_store+0x88/0xb8
[ 27.128166] dev_attr_store+0x40/0x58
[ 27.128169] sysfs_kf_write+0x50/0x68
[ 27.133358] kernfs_fop_write+0x12c/0x1c8
[ 27.133362] __vfs_write+0x54/0x160
[ 27.152297] vfs_write+0xcc/0x188
[ 27.157132] ksys_write+0x78/0x108
[ 27.162050] ksys_write+0xf8/0x108
[ 27.166968] __arm_smccc_hvc+0x158/0x4b0
[ 27.166973] __arm_smccc_hvc+0x9c/0x4b0
[ 27.186005] el0_svc+0x8/0xc
Signed-off-by: Manaf Meethalavalappu Pallikunhi <manafm@codeaurora.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/1607367181-24589-1-git-send-email-manafm@codeaurora.org
The division is used directly in re-divvying up power, the decimal part will
be discarded, devices will get less than the extra_actor_power - 1.
if using round the division to make the calculation more accurate.
For example:
actor0 received more than its max_power, it has the extra_power 759
actor1 received less than its max_power, it require extra_actor_power 395
actor2 received less than its max_power, it require extra_actor_power 365
actor1 and actor2 require the total capped_extra_power 760
using division in re-divvying up power
actor1 would actually get the extra_actor_power 394
actor2 would actually get the extra_actor_power 364
if using round the division in re-divvying up power
actor1 would actually get the extra_actor_power 394
actor2 would actually get the extra_actor_power 365
Signed-off-by: Jeson Gao <jeson.gao@unisoc.com>
Reviewed-by: Lukasz Luba <lukasz.luba@arm.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/1615796737-4688-1-git-send-email-gao.yunxiao6@gmail.com
There is a list with the purpose of grouping the cpufreq cooling
device together as described in the comments but actually it is
unused, the code evolved since 2012 and the list was no longer needed.
Delete the remaining unused list related code.
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Reviewed-by: Lukasz Luba <lukasz.luba@arm.com>
Link: https://lore.kernel.org/r/20210314111333.16551-5-daniel.lezcano@linaro.org
Currently the naming of a cooling device is just a cooling technique
followed by a number. When there are multiple cooling devices using
the same technique, it is impossible to clearly identify the related
device as this one is just a number.
For instance:
thermal-idle-0
thermal-idle-1
thermal-idle-2
thermal-idle-3
etc ...
The 'thermal' prefix is redundant with the subsystem namespace. This
patch removes the 'thermal prefix and changes the number by the device
name. So the naming above becomes:
idle-cpu0
idle-cpu1
idle-cpu2
idle-cpu3
etc ...
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Reviewed-by: Lukasz Luba <lukasz.luba@arm.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Link: https://lore.kernel.org/r/20210314111333.16551-4-daniel.lezcano@linaro.org
Currently the naming of a cooling device is just a cooling technique
followed by a number. When there are multiple cooling devices using
the same technique, it is impossible to clearly identify the related
device as this one is just a number.
For instance:
thermal-devfreq-0
thermal-devfreq-1
etc ...
The 'thermal' prefix is redundant with the subsystem namespace. This
patch removes the 'thermal' prefix and changes the number by the device
name. So the naming above becomes:
devfreq-5000000.gpu
devfreq-1d84000.ufshc
etc ...
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Reviewed-by: Lukasz Luba <lukasz.luba@arm.com>
Link: https://lore.kernel.org/r/20210314111333.16551-3-daniel.lezcano@linaro.org
Currently the naming of a cooling device is just a cooling technique
followed by a number. When there are multiple cooling devices using
the same technique, it is impossible to clearly identify the related
device as this one is just a number.
For instance:
thermal-cpufreq-0
thermal-cpufreq-1
etc ...
The 'thermal' prefix is redundant with the subsystem namespace. This
patch removes the 'thermal' prefix and changes the number by the device
name. So the naming above becomes:
cpufreq-cpu0
cpufreq-cpu4
etc ...
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Lukasz Luba <lukasz.luba@arm.com>
Link: https://lore.kernel.org/r/20210314111333.16551-2-daniel.lezcano@linaro.org
We want to have any kind of name for the cooling devices as we do no
longer want to rely on auto-numbering. Let's replace the cooling
device's fixed array by a char pointer to be allocated dynamically
when registering the cooling device, so we don't limit the length of
the name.
Rework the error path at the same time as we have to rollback the
allocations in case of error.
Tested with a dummy device having the name:
"Llanfairpwllgwyngyllgogerychwyrndrobwllllantysiliogogogoch"
A village on the island of Anglesey (Wales), known to have the longest
name in Europe.
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Reviewed-by: Lukasz Luba <lukasz.luba@arm.com>
Tested-by: Ido Schimmel <idosch@nvidia.com>
Link: https://lore.kernel.org/r/20210314111333.16551-1-daniel.lezcano@linaro.org
When kcalloc() returns NULL to __tcbp or of_count_phandle_with_args()
returns zero or -ENOENT to count, no error return code of
thermal_of_populate_bind_params() is assigned.
To fix these bugs, ret is assigned with -ENOMEM and -ENOENT in these
cases, respectively.
Fixes: a92bab8919 ("of: thermal: Allow multiple devices to share cooling map")
Reported-by: TOTE Robot <oslab@tsinghua.edu.cn>
Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20210310122423.3266-1-baijiaju1990@gmail.com
Add support for up to five TSC nodes. The new THCODE values are taken
from the example in the datasheet.
Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20210309162419.2621359-1-niklas.soderlund+renesas@ragnatech.se
The function devm_platform_ioremap_resource has already contains error
message, so remove the redundant dev_err here.
Signed-off-by: Tang Bin <tangbin@cmss.chinamobile.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20210222061105.6008-1-tangbin@cmss.chinamobile.com
thermal driver (Daniel Lezcano)
- Remove the notify ops as it is no longer used (Daniel Lezcano)
- Remove the 'forced passive' option and the unused bind/unbind
functions (Daniel Lezcano)
- Remove the THERMAL_TRIPS_NONE and the code cleanup around this
macro (Daniel Lezcano)
- Rework the delays to make them pre-computed instead of computing
them again and again at each polling interval (Daniel Lezcano)
- Remove the pointless 'thermal_zone_device_reset' function (Daniel
Lezcano)
- Use the critical and hot ops to prevent an unexpected system
shutdown on int340x (Kai-Heng Feng)
- Make the cooling device state private to the thermal subsystem
(Daniel Lezcano)
- Prevent to use not-power-aware actor devices with the power
allocator governor (Lukasz Luba)
- Remove 'zx' and 'tango' support along with the corresponding
platforms (Arnd Bergman)
- Fix several issues on the Omap thermal driver (Tony Lindgren)
- Add support for adc-tm5 PMIC thermal monitor for Qcom
platforms. Please note those changes rely on an immutable branch:
iio-thermal-5.11-rc1/ib-iio-thermal-5.11-rc1 from the iio tree
(Dmitry Baryshkov)
- Fix an initialization loop in the adc-tm5 (Colin Ian King)
- Fix a return error check in the cpufreq cooling device (Viresh Kumar)
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Merge tag 'thermal-v5.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thermal/linux
Pull thermal updates from Daniel Lezcano:
- Use the newly introduced 'hot' and 'critical' ops for the acpi
thermal driver (Daniel Lezcano)
- Remove the notify ops as it is no longer used (Daniel Lezcano)
- Remove the 'forced passive' option and the unused bind/unbind
functions (Daniel Lezcano)
- Remove the THERMAL_TRIPS_NONE and the code cleanup around this macro
(Daniel Lezcano)
- Rework the delays to make them pre-computed instead of computing them
again and again at each polling interval (Daniel Lezcano)
- Remove the pointless 'thermal_zone_device_reset' function (Daniel
Lezcano)
- Use the critical and hot ops to prevent an unexpected system shutdown
on int340x (Kai-Heng Feng)
- Make the cooling device state private to the thermal subsystem
(Daniel Lezcano)
- Prevent to use not-power-aware actor devices with the power allocator
governor (Lukasz Luba)
- Remove 'zx' and 'tango' support along with the corresponding
platforms (Arnd Bergman)
- Fix several issues on the Omap thermal driver (Tony Lindgren)
- Add support for adc-tm5 PMIC thermal monitor for Qcom platforms
(Dmitry Baryshkov)
- Fix an initialization loop in the adc-tm5 (Colin Ian King)
- Fix a return error check in the cpufreq cooling device (Viresh Kumar)
* tag 'thermal-v5.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thermal/linux: (26 commits)
thermal: cpufreq_cooling: freq_qos_update_request() returns < 0 on error
thermal: qcom: Fix comparison with uninitialized variable channels_available
thermal: qcom: add support for adc-tm5 PMIC thermal monitor
dt-bindings: thermal: qcom: add adc-thermal monitor bindings
thermal: ti-soc-thermal: Use non-inverted define for omap4
thermal: ti-soc-thermal: Simplify polling with iopoll
thermal: ti-soc-thermal: Fix stuck sensor with continuous mode for 4430
thermal: ti-soc-thermal: Skip pointless register access for dra7
thermal/drivers/zx: Remove zx driver
thermal/drivers/tango: Remove tango driver
thermal: power allocator: fail binding for non-power actor devices
thermal/core: Make cooling device state change private
thermal: intel: pch: Fix unexpected shutdown at critical temperature
thermal: int340x: Fix unexpected shutdown at critical temperature
thermal/core: Remove pointless thermal_zone_device_reset() function
thermal/core: Remove ms based delay fields
thermal/core: Use precomputed jiffies for the polling
thermal/core: Precompute the delays from msecs to jiffies
thermal/core: Remove unused macro THERMAL_TRIPS_NONE
thermal/core: Remove THERMAL_TRIPS_NONE test
...
[ NOTE: unfortunately this tree had to be freshly rebased today,
it's a same-content tree of 82891be90f3c (-next published)
merged with v5.11.
The main reason for the rebase was an authorship misattribution
problem with a new commit, which we noticed in the last minute,
and which we didn't want to be merged upstream. The offending
commit was deep in the tree, and dependent commits had to be
rebased as well. ]
- Core scheduler updates:
- Add CONFIG_PREEMPT_DYNAMIC: this in its current form adds the
preempt=none/voluntary/full boot options (default: full),
to allow distros to build a PREEMPT kernel but fall back to
close to PREEMPT_VOLUNTARY (or PREEMPT_NONE) runtime scheduling
behavior via a boot time selection.
There's also the /debug/sched_debug switch to do this runtime.
This feature is implemented via runtime patching (a new variant of static calls).
The scope of the runtime patching can be best reviewed by looking
at the sched_dynamic_update() function in kernel/sched/core.c.
( Note that the dynamic none/voluntary mode isn't 100% identical,
for example preempt-RCU is available in all cases, plus the
preempt count is maintained in all models, which has runtime
overhead even with the code patching. )
The PREEMPT_VOLUNTARY/PREEMPT_NONE models, used by the vast majority
of distributions, are supposed to be unaffected.
- Fix ignored rescheduling after rcu_eqs_enter(). This is a bug that
was found via rcutorture triggering a hang. The bug is that
rcu_idle_enter() may wake up a NOCB kthread, but this happens after
the last generic need_resched() check. Some cpuidle drivers fix it
by chance but many others don't.
In true 2020 fashion the original bug fix has grown into a 5-patch
scheduler/RCU fix series plus another 16 RCU patches to address
the underlying issue of missed preemption events. These are the
initial fixes that should fix current incarnations of the bug.
- Clean up rbtree usage in the scheduler, by providing & using the following
consistent set of rbtree APIs:
partial-order; less() based:
- rb_add(): add a new entry to the rbtree
- rb_add_cached(): like rb_add(), but for a rb_root_cached
total-order; cmp() based:
- rb_find(): find an entry in an rbtree
- rb_find_add(): find an entry, and add if not found
- rb_find_first(): find the first (leftmost) matching entry
- rb_next_match(): continue from rb_find_first()
- rb_for_each(): iterate a sub-tree using the previous two
- Improve the SMP/NUMA load-balancer: scan for an idle sibling in a single pass.
This is a 4-commit series where each commit improves one aspect of the idle
sibling scan logic.
- Improve the cpufreq cooling driver by getting the effective CPU utilization
metrics from the scheduler
- Improve the fair scheduler's active load-balancing logic by reducing the number
of active LB attempts & lengthen the load-balancing interval. This improves
stress-ng mmapfork performance.
- Fix CFS's estimated utilization (util_est) calculation bug that can result in
too high utilization values
- Misc updates & fixes:
- Fix the HRTICK reprogramming & optimization feature
- Fix SCHED_SOFTIRQ raising race & warning in the CPU offlining code
- Reduce dl_add_task_root_domain() overhead
- Fix uprobes refcount bug
- Process pending softirqs in flush_smp_call_function_from_idle()
- Clean up task priority related defines, remove *USER_*PRIO and
USER_PRIO()
- Simplify the sched_init_numa() deduplication sort
- Documentation updates
- Fix EAS bug in update_misfit_status(), which degraded the quality
of energy-balancing
- Smaller cleanups
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'sched-core-2021-02-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler updates from Ingo Molnar:
"Core scheduler updates:
- Add CONFIG_PREEMPT_DYNAMIC: this in its current form adds the
preempt=none/voluntary/full boot options (default: full), to allow
distros to build a PREEMPT kernel but fall back to close to
PREEMPT_VOLUNTARY (or PREEMPT_NONE) runtime scheduling behavior via
a boot time selection.
There's also the /debug/sched_debug switch to do this runtime.
This feature is implemented via runtime patching (a new variant of
static calls).
The scope of the runtime patching can be best reviewed by looking
at the sched_dynamic_update() function in kernel/sched/core.c.
( Note that the dynamic none/voluntary mode isn't 100% identical,
for example preempt-RCU is available in all cases, plus the
preempt count is maintained in all models, which has runtime
overhead even with the code patching. )
The PREEMPT_VOLUNTARY/PREEMPT_NONE models, used by the vast
majority of distributions, are supposed to be unaffected.
- Fix ignored rescheduling after rcu_eqs_enter(). This is a bug that
was found via rcutorture triggering a hang. The bug is that
rcu_idle_enter() may wake up a NOCB kthread, but this happens after
the last generic need_resched() check. Some cpuidle drivers fix it
by chance but many others don't.
In true 2020 fashion the original bug fix has grown into a 5-patch
scheduler/RCU fix series plus another 16 RCU patches to address the
underlying issue of missed preemption events. These are the initial
fixes that should fix current incarnations of the bug.
- Clean up rbtree usage in the scheduler, by providing & using the
following consistent set of rbtree APIs:
partial-order; less() based:
- rb_add(): add a new entry to the rbtree
- rb_add_cached(): like rb_add(), but for a rb_root_cached
total-order; cmp() based:
- rb_find(): find an entry in an rbtree
- rb_find_add(): find an entry, and add if not found
- rb_find_first(): find the first (leftmost) matching entry
- rb_next_match(): continue from rb_find_first()
- rb_for_each(): iterate a sub-tree using the previous two
- Improve the SMP/NUMA load-balancer: scan for an idle sibling in a
single pass. This is a 4-commit series where each commit improves
one aspect of the idle sibling scan logic.
- Improve the cpufreq cooling driver by getting the effective CPU
utilization metrics from the scheduler
- Improve the fair scheduler's active load-balancing logic by
reducing the number of active LB attempts & lengthen the
load-balancing interval. This improves stress-ng mmapfork
performance.
- Fix CFS's estimated utilization (util_est) calculation bug that can
result in too high utilization values
Misc updates & fixes:
- Fix the HRTICK reprogramming & optimization feature
- Fix SCHED_SOFTIRQ raising race & warning in the CPU offlining code
- Reduce dl_add_task_root_domain() overhead
- Fix uprobes refcount bug
- Process pending softirqs in flush_smp_call_function_from_idle()
- Clean up task priority related defines, remove *USER_*PRIO and
USER_PRIO()
- Simplify the sched_init_numa() deduplication sort
- Documentation updates
- Fix EAS bug in update_misfit_status(), which degraded the quality
of energy-balancing
- Smaller cleanups"
* tag 'sched-core-2021-02-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (51 commits)
sched,x86: Allow !PREEMPT_DYNAMIC
entry/kvm: Explicitly flush pending rcuog wakeup before last rescheduling point
entry: Explicitly flush pending rcuog wakeup before last rescheduling point
rcu/nocb: Trigger self-IPI on late deferred wake up before user resume
rcu/nocb: Perform deferred wake up before last idle's need_resched() check
rcu: Pull deferred rcuog wake up to rcu_eqs_enter() callers
sched/features: Distinguish between NORMAL and DEADLINE hrtick
sched/features: Fix hrtick reprogramming
sched/deadline: Reduce rq lock contention in dl_add_task_root_domain()
uprobes: (Re)add missing get_uprobe() in __find_uprobe()
smp: Process pending softirqs in flush_smp_call_function_from_idle()
sched: Harden PREEMPT_DYNAMIC
static_call: Allow module use without exposing static_call_key
sched: Add /debug/sched_preempt
preempt/dynamic: Support dynamic preempt with preempt= boot option
preempt/dynamic: Provide irqentry_exit_cond_resched() static call
preempt/dynamic: Provide preempt_schedule[_notrace]() static calls
preempt/dynamic: Provide cond_resched() and might_resched() static calls
preempt: Introduce CONFIG_PREEMPT_DYNAMIC
static_call: Provide DEFINE_STATIC_CALL_RET0()
...
freq_qos_update_request() returns 1 if the effective constraint value
has changed, 0 if the effective constraint value has not changed, or a
negative error code on failures.
The frequency constraints for CPUs can be set by different parts of the
kernel. If the maximum frequency constraint set by other parts of the
kernel are set at a lower value than the one corresponding to cooling
state 0, then we will never be able to cool down the system as
freq_qos_update_request() will keep on returning 0 and we will skip
updating cpufreq_state and thermal pressure.
Fix that by doing the updates even in the case where
freq_qos_update_request() returns 0, as we have effectively set the
constraint to a new value even if the consolidated value of the
actual constraint is unchanged because of external factors.
Cc: v5.7+ <stable@vger.kernel.org> # v5.7+
Reported-by: Thara Gopinath <thara.gopinath@linaro.org>
Fixes: f12e4f66ab ("thermal/cpu-cooling: Update thermal pressure in case of a maximum frequency capping")
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Lukasz Luba <lukasz.luba@arm.com>
Tested-by: Lukasz Luba <lukasz.luba@arm.com>
Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Tested-by: Thara Gopinath<thara.gopinath@linaro.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/b2b7e84944937390256669df5a48ce5abba0c1ef.1613540713.git.viresh.kumar@linaro.org
Currently the check of chip->channels[i].channel is against an the
uninitialized variable channels_available. I believe the variable
channels_available needs to be fetched first by the call to adc_tm5_read
before the channels check. Fix the issue swapping the order of the
channels check loop with the call to adc_tm5_read.
Addresses-Coverity: ("Uninitialized scalar variable")
Fixes: ca66dca5ed ("thermal: qcom: add support for adc-tm5 PMIC thermal monitor")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20210216151626.162996-1-colin.king@canonical.com
Add support for Thermal Monitoring part of PMIC5. This part is closely
coupled with ADC, using it's channels directly. ADC-TM support
generating interrupts on ADC value crossing low or high voltage bounds,
which is used to support thermal trip points.
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20210205000118.493610-3-dmitry.baryshkov@linaro.org
When we set bit 10 high we use continuous mode and not single
mode. Let's correct this to avoid confusion. No functional
changes here, the code does the right thing with bit 10.
Cc: Adam Ford <aford173@gmail.com>
Cc: Carl Philipp Klemm <philipp@uvos.xyz>
Cc: Eduardo Valentin <edubezval@gmail.com>
Cc: H. Nikolaus Schaller <hns@goldelico.com>
Cc: Merlijn Wajer <merlijn@wizzup.org>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Peter Ujfalusi <peter.ujfalusi@gmail.com>
Cc: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Tested-by: Adam Ford <aford173@gmail.com> #logicpd-torpedo-37xx-devkit
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20210205134534.49200-5-tony@atomide.com
We can use iopoll for checking the EOCZ (end of conversion) bit. And with
this we now also want to handle the timeout errors properly.
For omap3, we need about 1.2ms for the single mode sampling to wait for
EOCZ down, so let's use 1.5ms timeout there. Waiting for sampling to start
is faster and we can use 1ms timeout.
Cc: Adam Ford <aford173@gmail.com>
Cc: Carl Philipp Klemm <philipp@uvos.xyz>
Cc: Eduardo Valentin <edubezval@gmail.com>
Cc: H. Nikolaus Schaller <hns@goldelico.com>
Cc: Merlijn Wajer <merlijn@wizzup.org>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Peter Ujfalusi <peter.ujfalusi@gmail.com>
Cc: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Tested-by: Adam Ford <aford173@gmail.com> #logicpd-torpedo-37xx-devkit
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20210205134534.49200-4-tony@atomide.com
At least for 4430, trying to use the single conversion mode eventually
hangs the thermal sensor. This can be quite easily seen with errors:
thermal thermal_zone0: failed to read out thermal zone (-5)
Also, trying to read the temperature shows a stuck value with:
$ while true; do cat /sys/class/thermal/thermal_zone0/temp; done
Where the temperature is not rising at all with the busy loop.
Additionally, the EOCZ (end of conversion) bit is not rising on 4430 in
single conversion mode while it works fine in continuous conversion mode.
It is also possible that the hung temperature sensor can affect the
thermal shutdown alert too.
Let's fix the issue by adding TI_BANDGAP_FEATURE_CONT_MODE_ONLY flag and
use it for 4430.
Note that we also need to add udelay to for the EOCZ (end of conversion)
bit polling as otherwise we have it time out too early on 4430. We'll be
changing the loop to use iopoll in the following clean-up patch.
Cc: Adam Ford <aford173@gmail.com>
Cc: Carl Philipp Klemm <philipp@uvos.xyz>
Cc: Eduardo Valentin <edubezval@gmail.com>
Cc: H. Nikolaus Schaller <hns@goldelico.com>
Cc: Merlijn Wajer <merlijn@wizzup.org>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Peter Ujfalusi <peter.ujfalusi@gmail.com>
Cc: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Tested-by: Adam Ford <aford173@gmail.com> #logicpd-torpedo-37xx-devkit
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20210205134534.49200-3-tony@atomide.com
On dra7, there is no Start of Conversion (SOC) register bit and we have an
empty bgap_soc_mask in the configuration for the thermal driver. Let's not
do pointless reads and writes with the empty mask.
There's also no point waiting for End of Conversion bit (EOCZ) to go high
on dra7. We only care about it going down, and are now mostly timing out
waiting for EOCZ high while it has already gone down.
When we add checking for the timeout errors in a later patch, waiting for
EOCZ high would cause bogus time out errors.
Cc: Adam Ford <aford173@gmail.com>
Cc: Carl Philipp Klemm <philipp@uvos.xyz>
Cc: Eduardo Valentin <edubezval@gmail.com>
Cc: H. Nikolaus Schaller <hns@goldelico.com>
Cc: Merlijn Wajer <merlijn@wizzup.org>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Peter Ujfalusi <peter.ujfalusi@gmail.com>
Cc: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Tested-by: Adam Ford <aford173@gmail.com> #logicpd-torpedo-37xx-devkit
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20210205134534.49200-2-tony@atomide.com
This functionality has nothing to do with MCE, move it to the thermal
framework and untangle it from MCE.
Requested-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Tested-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Link: https://lkml.kernel.org/r/20210202121003.GD18075@zn.tnic
The zte zx platform is getting removed, so this driver is no
longer needed.
Cc: Jun Nie <jun.nie@linaro.org>
Cc: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20210120162400.4115366-3-arnd@kernel.org
The tango platform is getting removed, so the driver is no
longer needed.
Cc: Marc Gonzalez <marc.w.gonzalez@free.fr>
Cc: Mans Rullgard <mans@mansr.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Mans Rullgard <mans@mansr.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20210120162400.4115366-2-arnd@kernel.org
The thermal zone can have cooling devices which are missing power actor
API. This could be due to missing Energy Model for devfreq or cpufreq
cooling device. In this case it is safe to fail the binding rather than
trying to workaround and control the temperature in such thermal zone.
Signed-off-by: Lukasz Luba <lukasz.luba@arm.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20210119114126.19480-1-lukasz.luba@arm.com
Srinivas Pandruvada