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5ee7811e9a
28 Commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
Linus Torvalds
|
c1dbe9a1c8 |
Thermal control updates for 5.20-rc1
- Consolidate the thermal core code by beginning to move the thermal
trip structure from the thermal OF code as a generic structure to be
used by the different sensors when registering a thermal zone
(Daniel Lezcano).
- Make per cpufreq / devfreq cooling device ops instead of using a
global variable, fix comments and rework the trace information
(Lukasz Luba).
- Add the include/dt-bindings/thermal.h under the area covered by the
thermal maintainer in the MAINTAINERS file (Lukas Bulwahn).
- Improve the error output by giving the sensor identification when a
thermal zone failed to initialize, the DT bindings by changing the
positive logic and adding the r8a779f0 support on the rcar3 (Wolfram
Sang).
- Convert the QCom tsens DT binding to the dtsformat format (Krzysztof
Kozlowski).
- Remove the pointless get_trend() function in the QCom, Ux500 and
tegra thermal drivers, along with the unused DROP_FULL and
RAISE_FULL trends definitions. Simplify the code by using clamp()
macros (Daniel Lezcano).
- Fix ref_table memory leak at probe time on the k3_j72xx bandgap
(Bryan Brattlof).
- Fix array underflow in prep_lookup_table (Dan Carpenter).
- Add static annotation to the k3_j72xx_bandgap_j7* data structure
(Jin Xiaoyun).
- Fix typos in comments detected on sun8i by Coccinelle (Julia
Lawall).
- Fix typos in comments on rzg2l (Biju Das).
- Remove as unnecessary call to dev_err() as the error is already
printed by the failing function on u8500 (Yang Li).
- Register the thermal zones as hwmon sensors for the Qcom thermal
sensors (Dmitry Baryshkov).
- Fix 'tmon' tool compilation issue by adding phtread.h include
(Markus Mayer).
- Fix typo in the comments for the 'tmon' tool (Slark Xiao).
- Make the thermal core use ida_alloc()/free() directly instead of
ida_simple_get()/ida_simple_remove() that have been deprecated
(keliu).
- Drop ACPI_FADT_LOW_POWER_S0 check from the Intel PCH thermal control
driver (Rafael Wysocki).
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Merge tag 'thermal-5.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull thermal control updates from Rafael Wysocki:
"These start a rework of the handling of trip points in the thermal
core, improve the cpufreq/devfreq cooling device handling, update some
thermal control drivers and the tmon utility and clean up code.
Specifics:
- Consolidate the thermal core code by beginning to move the thermal
trip structure from the thermal OF code as a generic structure to
be used by the different sensors when registering a thermal zone
(Daniel Lezcano).
- Make per cpufreq / devfreq cooling device ops instead of using a
global variable, fix comments and rework the trace information
(Lukasz Luba).
- Add the include/dt-bindings/thermal.h under the area covered by the
thermal maintainer in the MAINTAINERS file (Lukas Bulwahn).
- Improve the error output by giving the sensor identification when a
thermal zone failed to initialize, the DT bindings by changing the
positive logic and adding the r8a779f0 support on the rcar3
(Wolfram Sang).
- Convert the QCom tsens DT binding to the dtsformat format
(Krzysztof Kozlowski).
- Remove the pointless get_trend() function in the QCom, Ux500 and
tegra thermal drivers, along with the unused DROP_FULL and
RAISE_FULL trends definitions. Simplify the code by using clamp()
macros (Daniel Lezcano).
- Fix ref_table memory leak at probe time on the k3_j72xx bandgap
(Bryan Brattlof).
- Fix array underflow in prep_lookup_table (Dan Carpenter).
- Add static annotation to the k3_j72xx_bandgap_j7* data structure
(Jin Xiaoyun).
- Fix typos in comments detected on sun8i by Coccinelle (Julia
Lawall).
- Fix typos in comments on rzg2l (Biju Das).
- Remove as unnecessary call to dev_err() as the error is already
printed by the failing function on u8500 (Yang Li).
- Register the thermal zones as hwmon sensors for the Qcom thermal
sensors (Dmitry Baryshkov).
- Fix 'tmon' tool compilation issue by adding phtread.h include
(Markus Mayer).
- Fix typo in the comments for the 'tmon' tool (Slark Xiao).
- Make the thermal core use ida_alloc()/free() directly instead of
ida_simple_get()/ida_simple_remove() that have been deprecated
(keliu).
- Drop ACPI_FADT_LOW_POWER_S0 check from the Intel PCH thermal
control driver (Rafael Wysocki)"
* tag 'thermal-5.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (39 commits)
thermal/of: Initialize trip points separately
thermal/of: Use thermal trips stored in the thermal zone
thermal/core: Add thermal_trip in thermal_zone
thermal/core: Rename 'trips' to 'num_trips'
thermal/core: Move thermal_set_delay_jiffies to static
thermal/core: Remove unneeded EXPORT_SYMBOLS
thermal/of: Move thermal_trip structure to thermal.h
thermal/of: Remove the device node pointer for thermal_trip
thermal/of: Replace device node match with device node search
thermal/core: Remove duplicate information when an error occurs
thermal/core: Avoid calling ->get_trip_temp() unnecessarily
thermal/tools/tmon: Fix typo 'the the' in comment
thermal/tools/tmon: Include pthread and time headers in tmon.h
thermal/ti-soc-thermal: Fix comment typo
thermal/drivers/qcom/spmi-adc-tm5: Register thermal zones as hwmon sensors
thermal/drivers/qcom/temp-alarm: Register thermal zones as hwmon sensors
thermal/drivers/u8500: Remove unnecessary print function dev_err()
thermal/drivers/rzg2l: Fix comments
thermal/drivers/sun8i: Fix typo in comment
thermal/drivers/k3_j72xx_bandgap: Make k3_j72xx_bandgap_j721e_data and k3_j72xx_bandgap_j7200_data static
...
|
||
|
Linus Torvalds
|
a771ea6413 |
Power management updates for 5.20-rc1
- Make cpufreq_show_cpus() more straightforward (Viresh Kumar).
- Drop unnecessary CPU hotplug locking from store() used by cpufreq
sysfs attributes (Viresh Kumar).
- Make the ACPI cpufreq driver support the boost control interface on
Zhaoxin/Centaur processors (Tony W Wang-oc).
- Print a warning message on attempts to free an active cpufreq policy
which should never happen (Viresh Kumar).
- Fix grammar in the Kconfig help text for the loongson2 cpufreq
driver (Randy Dunlap).
- Use cpumask_var_t for an on-stack CPU mask in the ondemand cpufreq
governor (Zhao Liu).
- Add trace points for guest_halt_poll_ns grow/shrink to the haltpoll
cpuidle driver (Eiichi Tsukata).
- Modify intel_idle to treat C1 and C1E as independent idle states on
Sapphire Rapids (Artem Bityutskiy).
- Extend support for wakeirq to callback wrappers used during system
suspend and resume (Ulf Hansson).
- Defer waiting for device probe before loading a hibernation image
till the first actual device access to avoid possible deadlocks
reported by syzbot (Tetsuo Handa).
- Unify device_init_wakeup() for PM_SLEEP and !PM_SLEEP (Bjorn
Helgaas).
- Add Raptor Lake-P to the list of processors supported by the Intel
RAPL driver (George D Sworo).
- Add Alder Lake-N and Raptor Lake-P to the list of processors for
which Power Limit4 is supported in the Intel RAPL driver (Sumeet
Pawnikar).
- Make pm_genpd_remove() check genpd_debugfs_dir against NULL before
attempting to remove it (Hsin-Yi Wang).
- Change the Energy Model code to represent power in micro-Watts and
adjust its users accordingly (Lukasz Luba).
- Add new devfreq driver for Mediatek CCI (Cache Coherent
Interconnect) (Johnson Wang).
- Convert the Samsung Exynos SoC Bus bindings to DT schema of
exynos-bus.c (Krzysztof Kozlowski).
- Address kernel-doc warnings by adding the description for unused
fucntion parameters in devfreq core (Mauro Carvalho Chehab).
- Use NULL to pass a null pointer rather than zero according to the
function propotype in imx-bus.c (Colin Ian King).
- Print error message instead of error interger value in
tegra30-devfreq.c (Dmitry Osipenko).
- Add checks to prevent setting negative frequency QoS limits for
CPUs (Shivnandan Kumar).
- Update the pm-graph suite of utilities to the latest revision 5.9
including multiple improvements (Todd Brandt).
- Drop pme_interrupt reference from the PCI power management
documentation (Mario Limonciello).
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Merge tag 'pm-5.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management updates from Rafael Wysocki:
"These are mostly minor improvements all over including new CPU IDs for
the Intel RAPL driver, an Energy Model rework to use micro-Watt as the
power unit, cpufreq fixes and cleanus, cpuidle updates, devfreq
updates, documentation cleanups and a new version of the pm-graph
suite of utilities.
Specifics:
- Make cpufreq_show_cpus() more straightforward (Viresh Kumar).
- Drop unnecessary CPU hotplug locking from store() used by cpufreq
sysfs attributes (Viresh Kumar).
- Make the ACPI cpufreq driver support the boost control interface on
Zhaoxin/Centaur processors (Tony W Wang-oc).
- Print a warning message on attempts to free an active cpufreq
policy which should never happen (Viresh Kumar).
- Fix grammar in the Kconfig help text for the loongson2 cpufreq
driver (Randy Dunlap).
- Use cpumask_var_t for an on-stack CPU mask in the ondemand cpufreq
governor (Zhao Liu).
- Add trace points for guest_halt_poll_ns grow/shrink to the haltpoll
cpuidle driver (Eiichi Tsukata).
- Modify intel_idle to treat C1 and C1E as independent idle states on
Sapphire Rapids (Artem Bityutskiy).
- Extend support for wakeirq to callback wrappers used during system
suspend and resume (Ulf Hansson).
- Defer waiting for device probe before loading a hibernation image
till the first actual device access to avoid possible deadlocks
reported by syzbot (Tetsuo Handa).
- Unify device_init_wakeup() for PM_SLEEP and !PM_SLEEP (Bjorn
Helgaas).
- Add Raptor Lake-P to the list of processors supported by the Intel
RAPL driver (George D Sworo).
- Add Alder Lake-N and Raptor Lake-P to the list of processors for
which Power Limit4 is supported in the Intel RAPL driver (Sumeet
Pawnikar).
- Make pm_genpd_remove() check genpd_debugfs_dir against NULL before
attempting to remove it (Hsin-Yi Wang).
- Change the Energy Model code to represent power in micro-Watts and
adjust its users accordingly (Lukasz Luba).
- Add new devfreq driver for Mediatek CCI (Cache Coherent
Interconnect) (Johnson Wang).
- Convert the Samsung Exynos SoC Bus bindings to DT schema of
exynos-bus.c (Krzysztof Kozlowski).
- Address kernel-doc warnings by adding the description for unused
function parameters in devfreq core (Mauro Carvalho Chehab).
- Use NULL to pass a null pointer rather than zero according to the
function propotype in imx-bus.c (Colin Ian King).
- Print error message instead of error interger value in
tegra30-devfreq.c (Dmitry Osipenko).
- Add checks to prevent setting negative frequency QoS limits for
CPUs (Shivnandan Kumar).
- Update the pm-graph suite of utilities to the latest revision 5.9
including multiple improvements (Todd Brandt).
- Drop pme_interrupt reference from the PCI power management
documentation (Mario Limonciello)"
* tag 'pm-5.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (27 commits)
powercap: RAPL: Add Power Limit4 support for Alder Lake-N and Raptor Lake-P
PM: QoS: Add check to make sure CPU freq is non-negative
PM: hibernate: defer device probing when resuming from hibernation
intel_idle: make SPR C1 and C1E be independent
cpufreq: ondemand: Use cpumask_var_t for on-stack cpu mask
cpufreq: loongson2: fix Kconfig "its" grammar
pm-graph v5.9
cpufreq: Warn users while freeing active policy
cpufreq: scmi: Support the power scale in micro-Watts in SCMI v3.1
firmware: arm_scmi: Get detailed power scale from perf
Documentation: EM: Switch to micro-Watts scale
PM: EM: convert power field to micro-Watts precision and align drivers
PM / devfreq: tegra30: Add error message for devm_devfreq_add_device()
PM / devfreq: imx-bus: use NULL to pass a null pointer rather than zero
PM / devfreq: shut up kernel-doc warnings
dt-bindings: interconnect: samsung,exynos-bus: convert to dtschema
PM / devfreq: mediatek: Introduce MediaTek CCI devfreq driver
dt-bindings: interconnect: Add MediaTek CCI dt-bindings
PM: domains: Ensure genpd_debugfs_dir exists before remove
PM: runtime: Extend support for wakeirq for force_suspend|resume
...
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Lukasz Luba
|
9784d2fbb8 |
drivers/thermal/cpufreq_cooling: Update outdated comments
The code has moved and left some comments stale. Update them where there is a need. Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Lukasz Luba <lukasz.luba@arm.com> Link: https://lore.kernel.org/r/20220613124327.30766-4-lukasz.luba@arm.com Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> |
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Lukasz Luba
|
3f7ced7ac9 |
drivers/thermal/cpufreq_cooling : Refactor thermal_power_cpu_get_power tracing
Simplify the thermal_power_cpu_get_power trace event by removing complicated cpumask and variable length array. Now the tools parsing trace output don't have to hassle to get this power data. The simplified format version uses 'policy->cpu'. Remove also the 'load' information completely since there is very little value of it in this trace event. To get the CPUs' load (or utilization) there are other dedicated trace hooks in the kernel. This patch also simplifies and speeds-up the main cooling code when that trace event is enabled. Rename the trace event to avoid confusion of tools which parse the trace file. Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Lukasz Luba <lukasz.luba@arm.com> Link: https://lore.kernel.org/r/20220613124327.30766-3-lukasz.luba@arm.com Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> |
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Lukasz Luba
|
3cbf6a8ab7 |
drivers/thermal/cpufreq_cooling: Use private callback ops for each cooling device
It is very unlikely that one CPU cluster would have the EM and some other won't have it (because EM registration failed or DT lacks needed entry). Although, we should avoid modifying global variable with callbacks anyway. Redesign this and add safety for such situation. Signed-off-by: Lukasz Luba <lukasz.luba@arm.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Link: https://lore.kernel.org/r/20220613124327.30766-2-lukasz.luba@arm.com Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> |
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Lukasz Luba
|
ae6ccaa650 |
PM: EM: convert power field to micro-Watts precision and align drivers
The milli-Watts precision causes rounding errors while calculating efficiency cost for each OPP. This is especially visible in the 'simple' Energy Model (EM), where the power for each OPP is provided from OPP framework. This can cause some OPPs to be marked inefficient, while using micro-Watts precision that might not happen. Update all EM users which access 'power' field and assume the value is in milli-Watts. Solve also an issue with potential overflow in calculation of energy estimation on 32bit machine. It's needed now since the power value (thus the 'cost' as well) are higher. Example calculation which shows the rounding error and impact: power = 'dyn-power-coeff' * volt_mV * volt_mV * freq_MHz power_a_uW = (100 * 600mW * 600mW * 500MHz) / 10^6 = 18000 power_a_mW = (100 * 600mW * 600mW * 500MHz) / 10^9 = 18 power_b_uW = (100 * 605mW * 605mW * 600MHz) / 10^6 = 21961 power_b_mW = (100 * 605mW * 605mW * 600MHz) / 10^9 = 21 max_freq = 2000MHz cost_a_mW = 18 * 2000MHz/500MHz = 72 cost_a_uW = 18000 * 2000MHz/500MHz = 72000 cost_b_mW = 21 * 2000MHz/600MHz = 70 // <- artificially better cost_b_uW = 21961 * 2000MHz/600MHz = 73203 The 'cost_b_mW' (which is based on old milli-Watts) is misleadingly better that the 'cost_b_uW' (this patch uses micro-Watts) and such would have impact on the 'inefficient OPPs' information in the Cpufreq framework. This patch set removes the rounding issue. Signed-off-by: Lukasz Luba <lukasz.luba@arm.com> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
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Dietmar Eggemann
|
bb44799949 |
sched, drivers: Remove max param from effective_cpu_util()/sched_cpu_util()
effective_cpu_util() already has a `int cpu' parameter which allows to retrieve the CPU capacity scale factor (or maximum CPU capacity) inside this function via an arch_scale_cpu_capacity(cpu). A lot of code calling effective_cpu_util() (or the shim sched_cpu_util()) needs the maximum CPU capacity, i.e. it will call arch_scale_cpu_capacity() already. But not having to pass it into effective_cpu_util() will make the EAS wake-up code easier, especially when the maximum CPU capacity reduced by the thermal pressure is passed through the EAS wake-up functions. Due to the asymmetric CPU capacity support of arm/arm64 architectures, arch_scale_cpu_capacity(int cpu) is a per-CPU variable read access via per_cpu(cpu_scale, cpu) on such a system. On all other architectures it is a a compile-time constant (SCHED_CAPACITY_SCALE). Signed-off-by: Dietmar Eggemann <dietmar.eggemann@arm.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Acked-by: Vincent Guittot <vincent.guittot@linaro.org> Tested-by: Lukasz Luba <lukasz.luba@arm.com> Link: https://lkml.kernel.org/r/20220621090414.433602-4-vdonnefort@google.com |
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Lukasz Luba
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9926bbec3a |
thermal: cooling: Check Energy Model type in cpufreq_cooling and devfreq_cooling
The Energy Model can now be artificial, which means the power values are mathematically generated to leverage EAS while not expected to be on an uniform scale with other devices providing power information. If this EM type is in use, the thermal governor IPA should not be allowed to operate, since the relation between cooling devices is not properly defined. Thus, it might be possible that big GPU has lower power values than a Little CPU. To mitigate a misbehaviour of the thermal control algorithm, simply do not register the cooling device as IPA's power actor. Signed-off-by: Lukasz Luba <lukasz.luba@arm.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Reviewed-by: Ionela Voinescu <ionela.voinescu@arm.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
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Lukasz Luba
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5168b1be09 |
thermal: cpufreq_cooling: Use new thermal pressure update function
Thermal pressure provides a new API, which allows to use CPU frequency as an argument. That removes the need of local conversion to capacity. Use this new function and remove old conversion code. Signed-off-by: Lukasz Luba <lukasz.luba@arm.com> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> |
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Lukasz Luba
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2ad8ccc17d |
thermal/cpufreq_cooling: Update offline CPUs per-cpu thermal_pressure
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:
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brian-sy yang
|
34ab17cc6c |
thermal/drivers/cpufreq_cooling: Fix slab OOB issue
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:
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Daniel Lezcano
|
87602aeb8a |
thermal/drivers/cpufreq_cooling: Remove unused list
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 |
||
|
Daniel Lezcano
|
ef37d1f9ac |
thermal/drivers/cpufreq_cooling: Use device name instead of auto-numbering
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 |
||
|
Linus Torvalds
|
5d26c176d5 |
- 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. 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) -----BEGIN PGP SIGNATURE----- iQEzBAABCAAdFiEEGn3N4YVz0WNVyHskqDIjiipP6E8FAmAvkKMACgkQqDIjiipP 6E9yFggAmXy8t2j1mRvn/KLU+teTGIoSFkZ8mBnY2Sgip97IRZRhCwAZbUKOW0eI bvpAzBjacxdZHT7OxxvGzCOq/zlAh4UoStI8bMpzdUWPdkAj4ippArLYGvagLym8 WEQysWnrr8V1RCZbQuBNjyLwjf0fcXkzIBU1mbZXA8T8Y6Yn646TdtsrVT4Idg1j MOg7PAHBcTSY/wOReZKJ5TB1yvo2tNOuGOqUVbrIAHlRkiNTVHirVUq6aZGtTTKp 7ukcu8EI/o7XKBdQ5d9MZaHdwkcyAIJj4jdjmjkUJpa8VYQFPjayNyN3I+Py9lH2 jtWVYHQxZbY166IZP2yeXFjPzd6elw== =Jmz4 -----END PGP SIGNATURE----- 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 ... |
||
Viresh Kumar
|
a51afb1331 |
thermal: cpufreq_cooling: freq_qos_update_request() returns < 0 on error
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:
|
||
|
Viresh Kumar
|
d1515851ca |
thermal: cpufreq_cooling: Reuse sched_cpu_util() for SMP platforms
Several parts of the kernel are already using the effective CPU
utilization (as seen by the scheduler) to get the current load on the
CPU, do the same here instead of depending on the idle time of the CPU,
which isn't that accurate comparatively.
This is also the right thing to do as it makes the cpufreq governor
(schedutil) align better with the cpufreq_cooling driver, as the power
requested by cpufreq_cooling governor will exactly match the next
frequency requested by the schedutil governor since they are both using
the same metric to calculate load.
This was tested on ARM Hikey6220 platform with hackbench, sysbench and
schbench. None of them showed any regression or significant
improvements. Schbench is the most important ones out of these as it
creates the scenario where the utilization numbers provide a better
estimate of the future.
Scenario 1: The CPUs were mostly idle in the previous polling window of
the IPA governor as the tasks were sleeping and here are the details
from traces (load is in %):
Old: thermal_power_cpu_get_power: cpus=00000000,000000ff freq=1200000 total_load=203 load={{0x35,0x1,0x0,0x31,0x0,0x0,0x64,0x0}} dynamic_power=1339
New: thermal_power_cpu_get_power: cpus=00000000,000000ff freq=1200000 total_load=600 load={{0x60,0x46,0x45,0x45,0x48,0x3b,0x61,0x44}} dynamic_power=3960
Here, the "Old" line gives the load and requested_power (dynamic_power
here) numbers calculated using the idle time based implementation, while
"New" is based on the CPU utilization from scheduler.
As can be clearly seen, the load and requested_power numbers are simply
incorrect in the idle time based approach and the numbers collected from
CPU's utilization are much closer to the reality.
Scenario 2: The CPUs were busy in the previous polling window of the IPA
governor:
Old: thermal_power_cpu_get_power: cpus=00000000,000000ff freq=1200000 total_load=800 load={{0x64,0x64,0x64,0x64,0x64,0x64,0x64,0x64}} dynamic_power=5280
New: thermal_power_cpu_get_power: cpus=00000000,000000ff freq=1200000 total_load=708 load={{0x4d,0x5c,0x5c,0x5b,0x5c,0x5c,0x51,0x5b}} dynamic_power=4672
As can be seen, the idle time based load is 100% for all the CPUs as it
took only the last window into account, but in reality the CPUs aren't
that loaded as shown by the utilization numbers.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Lukasz Luba <lukasz.luba@arm.com>
Link: https://lkml.kernel.org/r/9c255c83d78d58451abc06848001faef94c87a12.1607400596.git.viresh.kumar@linaro.org
|
||
Zhuguangqing
|
236761f19a |
thermal/drivers/cpufreq_cooling: Update cpufreq_state only if state has changed
If state has not changed successfully and we updated cpufreq_state,
next time when the new state is equal to cpufreq_state (not changed
successfully last time), we will return directly and miss a
freq_qos_update_request() that should have been.
Fixes:
|
||
|
zhuguangqing
|
ecd1d2a3e4 |
thermal: cooling: Remove unused variable *tz
1. devfreq_cooling.c: The variable *tz is not used in
devfreq_cooling_get_requested_power(), devfreq_cooling_state2power()
and devfreq_cooling_power2state().
2. cpufreq_cooling.c: After
|
||
Rafael J. Wysocki
|
5b5642075c |
Merge branches 'pm-em' and 'pm-core'
* pm-em: OPP: refactor dev_pm_opp_of_register_em() and update related drivers Documentation: power: update Energy Model description PM / EM: change name of em_pd_energy to em_cpu_energy PM / EM: remove em_register_perf_domain PM / EM: add support for other devices than CPUs in Energy Model PM / EM: update callback structure and add device pointer PM / EM: introduce em_dev_register_perf_domain function PM / EM: change naming convention from 'capacity' to 'performance' * pm-core: mmc: jz4740: Use pm_ptr() macro PM: Make *_DEV_PM_OPS macros use __maybe_unused PM: core: introduce pm_ptr() macro |
||
Finley Xiao
|
371a3bc79c |
thermal/drivers/cpufreq_cooling: Fix wrong frequency converted from power
The function cpu_power_to_freq is used to find a frequency and set the
cooling device to consume at most the power to be converted. For example,
if the power to be converted is 80mW, and the em table is as follow.
struct em_cap_state table[] = {
/* KHz mW */
{ 1008000, 36, 0 },
{ 1200000, 49, 0 },
{ 1296000, 59, 0 },
{ 1416000, 72, 0 },
{ 1512000, 86, 0 },
};
The target frequency should be 1416000KHz, not 1512000KHz.
Fixes:
|
||
|
Lukasz Luba
|
521b512b15 |
PM / EM: change naming convention from 'capacity' to 'performance'
The Energy Model uses concept of performance domain and capacity states in order to calculate power used by CPUs. Change naming convention from capacity to performance state would enable wider usage in future, e.g. upcoming support for other devices other than CPUs. Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Acked-by: Quentin Perret <qperret@google.com> Signed-off-by: Lukasz Luba <lukasz.luba@arm.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
||
Amit Kucheria
|
c65f83c066 |
thermal/drivers/cpufreq_cooling: Replace module.h with export.h
cpufreq_cooling cannot be modular, remove the unnecessary module.h include and replace with export.h to handle EXPORT_SYMBOL family of macros. Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Link: https://lore.kernel.org/r/7a439e41e91d8bc5ff99207f99723fcf04ca36eb.1589199124.git.amit.kucheria@linaro.org |
||
|
Amit Kucheria
|
5ccb451e47 |
thermal/drivers/cpufreq_cooling: Sort headers alphabetically
Sort headers to make it easier to read and find duplicate headers. Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Link: https://lore.kernel.org/r/4231f5dfe758b9bf716981be71cadf9642c83528.1589199124.git.amit.kucheria@linaro.org |
||
|
Linus Torvalds
|
34183ddd13 |
- Convert tsens configuration DT binding to yaml (Rajeshwari)
- Add interrupt support on the rcar sensor (Niklas Söderlund) - Add a new Spreadtrum thermal driver (Baolin Wang) - Add thermal binding for the fsl scu board, a new API to retrieve the sensor id bound to the thermal zone and i.MX system controller sensor (Anson Huang)) - Remove warning log when a deferred probe is requested on Exynos (Marek Szyprowski) - Add the thermal monitoring unit support for imx8mm with its DT bindings (Anson Huang) - Rephrase the Kconfig text for clarity (Linus Walleij) - Use the gpio descriptor for the ti-soc-thermal (Linus Walleij) - Align msg structure to 4 bytes for i.MX SC, fix the Kconfig dependency, add the __may_be unused annotation for PM functions and the COMPILE_TEST option for imx8mm (Anson Huang) - Fix a dependency on regmap in Kconfig for qoriq (Yuantian Tang) - Add DT binding and support for the rcar gen3 r8a77961 and improve the error path on the rcar init function (Niklas Söderlund) - Cleanup and improvements for the tsens Qcom sensor (Amit Kucheria) - Improve code by removing lock and caching values in the rcar thermal sensor (Niklas Söderlund) - Cleanup in the qoriq drivers and add a call to imx_thermal_unregister_legacy_cooling in the removal function (Anson Huang) - Remove redundant 'maxItems' in tsens and sprd DT bindings (Rob Herring) - Change the thermal DT bindings by making the cooling-maps optional (Yuantian Tang) - Add Tiger Lake support (Sumeet Pawnikar) - Use scnprintf() for avoiding potential buffer overflow (Takashi Iwai) - Make pkg_temp_lock a raw_spinlock_t(Clark Williams) - Fix incorrect data types by changing them to signed on i.MX SC (Anson Huang) - Replace zero-length array with flexible-array member (Gustavo A. R. Silva) - Add support for i.MX8MP in the driver and in the DT bindings (Anson Huang) - Fix return value of the cpufreq_set_cur_state() function (Willy Wolff) - Remove abusing and scary WARN_ON in the cpufreq cooling device (Daniel Lezcano) - Fix build warning of incorrect argument type reported by sparse on imx8mm (Anson Huang) - Fix stub for the devfreq cooling device (Martin Blumenstingl) - Fix cpu idle cooling documentation (Sergey Vidishev) -----BEGIN PGP SIGNATURE----- iQEzBAABCAAdFiEEGn3N4YVz0WNVyHskqDIjiipP6E8FAl6MXkEACgkQqDIjiipP 6E+BIggAh52YBU8D8GthsvCPTgka95+wAIaZtx4Y7UnhvshHhM2w+m97TQOXK373 95mwO9mwQuAoksSmLo7pBQYJ7HItQ26Yoq9akpOL6EiT+BEWiqoHJgl+afVVtoKa n67d3Pa6coup1+PQNIA8kpTIOmUQTP8THtwpZ3HlChWsg22NTd0QUGpGJ1TtBD/q KqMdQjxahFJ4RTYsnECWBkw3EMkczMNMgdrXEvm4rMkcaJzv9g2ZPqerOShK/RzP 8sejWczt6jaRwu4hLpd/lLikTSHZoXMFJ8ylAiQXFELCPAQIrMS/ae+dTGJ4qP7x hkjsewPbeA1Z+al/IBVHiCtOzKkICQ== =XDYl -----END PGP SIGNATURE----- Merge tag 'thermal-v5.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thermal/linux Pull thermal updates from Daniel Lezcano: - Convert tsens configuration DT binding to yaml (Rajeshwari) - Add interrupt support on the rcar sensor (Niklas Söderlund) - Add a new Spreadtrum thermal driver (Baolin Wang) - Add thermal binding for the fsl scu board, a new API to retrieve the sensor id bound to the thermal zone and i.MX system controller sensor (Anson Huang)) - Remove warning log when a deferred probe is requested on Exynos (Marek Szyprowski) - Add the thermal monitoring unit support for imx8mm with its DT bindings (Anson Huang) - Rephrase the Kconfig text for clarity (Linus Walleij) - Use the gpio descriptor for the ti-soc-thermal (Linus Walleij) - Align msg structure to 4 bytes for i.MX SC, fix the Kconfig dependency, add the __may_be unused annotation for PM functions and the COMPILE_TEST option for imx8mm (Anson Huang) - Fix a dependency on regmap in Kconfig for qoriq (Yuantian Tang) - Add DT binding and support for the rcar gen3 r8a77961 and improve the error path on the rcar init function (Niklas Söderlund) - Cleanup and improvements for the tsens Qcom sensor (Amit Kucheria) - Improve code by removing lock and caching values in the rcar thermal sensor (Niklas Söderlund) - Cleanup in the qoriq drivers and add a call to imx_thermal_unregister_legacy_cooling in the removal function (Anson Huang) - Remove redundant 'maxItems' in tsens and sprd DT bindings (Rob Herring) - Change the thermal DT bindings by making the cooling-maps optional (Yuantian Tang) - Add Tiger Lake support (Sumeet Pawnikar) - Use scnprintf() for avoiding potential buffer overflow (Takashi Iwai) - Make pkg_temp_lock a raw_spinlock_t(Clark Williams) - Fix incorrect data types by changing them to signed on i.MX SC (Anson Huang) - Replace zero-length array with flexible-array member (Gustavo A. R. Silva) - Add support for i.MX8MP in the driver and in the DT bindings (Anson Huang) - Fix return value of the cpufreq_set_cur_state() function (Willy Wolff) - Remove abusing and scary WARN_ON in the cpufreq cooling device (Daniel Lezcano) - Fix build warning of incorrect argument type reported by sparse on imx8mm (Anson Huang) - Fix stub for the devfreq cooling device (Martin Blumenstingl) - Fix cpu idle cooling documentation (Sergey Vidishev) * tag 'thermal-v5.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thermal/linux: (52 commits) Documentation: cpu-idle-cooling: Fix diagram for 33% duty cycle thermal: devfreq_cooling: inline all stubs for CONFIG_DEVFREQ_THERMAL=n thermal: imx8mm: Fix build warning of incorrect argument type thermal/drivers/cpufreq_cooling: Remove abusing WARN_ON thermal/drivers/cpufreq_cooling: Fix return of cpufreq_set_cur_state thermal: imx8mm: Add i.MX8MP support dt-bindings: thermal: imx8mm-thermal: Add support for i.MX8MP thermal: qcom: tsens.h: Replace zero-length array with flexible-array member thermal: imx_sc_thermal: Fix incorrect data type thermal: int340x_thermal: Use scnprintf() for avoiding potential buffer overflow thermal: int340x: processor_thermal: Add Tiger Lake support thermal/x86_pkg_temp: Make pkg_temp_lock a raw_spinlock_t dt-bindings: thermal: make cooling-maps property optional dt-bindings: thermal: qcom-tsens: Remove redundant 'maxItems' dt-bindings: thermal: sprd: Remove redundant 'maxItems' thermal: imx: Calling imx_thermal_unregister_legacy_cooling() in .remove thermal: qoriq: Sort includes alphabetically thermal: qoriq: Use devm_add_action_or_reset() to handle all cleanups thermal: rcar_thermal: Remove lock in rcar_thermal_get_current_temp() thermal: rcar_thermal: Do not store ctemp in rcar_thermal_priv ... |
||
|
Daniel Lezcano
|
40ea568593 |
thermal/drivers/cpufreq_cooling: Remove abusing WARN_ON
The WARN_ON macros are used at the entry functions state2power() and set_cur_state(). state2power() is called with the max_state retrieved from get_max_state which returns cpufreq_cdev->max_level, then it check if max_state is > cpufreq_cdev->max_level. The test does not really makes sense but let's assume we want to make sure to catch an error if the code evolves. However the WARN_ON is overkill. set_cur_state() is also called from userspace if we write to the sysfs. It is easy to see a stack dumped by just writing to sysfs /sys/class/thermal/cooling_device0/cur_state a value greater than "max_level". A bit scary. Returing -EINVAL is enough. Remove these WARN_ON. Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Link: https://lore.kernel.org/r/20200321193107.21590-1-daniel.lezcano@linaro.org |
||
Willy Wolff
|
ff44f672d7 |
thermal/drivers/cpufreq_cooling: Fix return of cpufreq_set_cur_state
When setting the cooling device current state from userspace via sysfs,
the operation fails by returning an -EINVAL.
It appears the recent changes with the per-policy frequency QoS
introduced a regression as reported by:
https://lkml.org/lkml/2020/3/20/599
The function freq_qos_update_request returns 0 or 1 describing update
effectiveness, and a negative error code on failure. However,
cpufreq_set_cur_state returns 0 on success or an error code otherwise.
Consider the QoS update as successful if the function does not return
an error.
Fixes:
|
||
Thara Gopinath
|
f12e4f66ab |
thermal/cpu-cooling: Update thermal pressure in case of a maximum frequency capping
Thermal governors can request for a CPU's maximum supported frequency to be capped in case of an overheat event. This in turn means that the maximum capacity available for tasks to run on the particular CPU is reduced. Delta between the original maximum capacity and capped maximum capacity is known as thermal pressure. Enable cpufreq cooling device to update the thermal pressure in event of a capped maximum frequency. Signed-off-by: Thara Gopinath <thara.gopinath@linaro.org> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Link: https://lkml.kernel.org/r/20200222005213.3873-9-thara.gopinath@linaro.org |
||
|
Daniel Lezcano
|
23affa2e29 |
thermal/drivers/cpu_cooling: Rename to cpufreq_cooling
As we introduced the idle injection cooling device called cpuidle_cooling, let's be consistent and rename the cpu_cooling to cpufreq_cooling as this one mitigates with OPPs changes. Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Reviewed-by: Amit Kucheria <amit.kucheria@linaro.org> Link: https://lore.kernel.org/r/20191219225317.17158-3-daniel.lezcano@linaro.org |