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* cpuidle: Use local_clock_noinstr()Peter Zijlstra2023-06-052-6/+6
| | | | | | | | | | With the introduction of local_clock_noinstr(), local_clock() itself is no longer marked noinstr, use the correct function. Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Acked-by: Rafael J. Wysocki <rafael@kernel.org> Tested-by: Michael Kelley <mikelley@microsoft.com> # Hyper-V Link: https://lore.kernel.org/r/20230519102716.045980863@infradead.org
* RISC-V: Align SBI probe implementation with specAndrew Jones2023-04-291-1/+1
| | | | | | | | | | | | | | | | sbi_probe_extension() is specified with "Returns 0 if the given SBI extension ID (EID) is not available, or 1 if it is available unless defined as any other non-zero value by the implementation." Additionally, sbiret.value is a long. Fix the implementation to ensure any nonzero long value is considered a success, rather than only positive int values. Fixes: b9dcd9e41587 ("RISC-V: Add basic support for SBI v0.2") Signed-off-by: Andrew Jones <ajones@ventanamicro.com> Reviewed-by: Conor Dooley <conor.dooley@microchip.com> Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20230427163626.101042-1-ajones@ventanamicro.com Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
* Merge tag 'powerpc-6.4-1' of ↵Linus Torvalds2023-04-291-14/+14
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux Pull powerpc updates from Michael Ellerman: - Add support for building the kernel using PC-relative addressing on Power10. - Allow HV KVM guests on Power10 to use prefixed instructions. - Unify support for the P2020 CPU (85xx) into a single machine description. - Always build the 64-bit kernel with 128-bit long double. - Drop support for several obsolete 2000's era development boards as identified by Paul Gortmaker. - A series fixing VFIO on Power since some generic changes. - Various other small features and fixes. Thanks to Alexey Kardashevskiy, Andrew Donnellan, Benjamin Gray, Bo Liu, Christophe Leroy, Dan Carpenter, David Binderman, Ira Weiny, Joel Stanley, Kajol Jain, Kautuk Consul, Liang He, Luis Chamberlain, Masahiro Yamada, Michael Neuling, Nathan Chancellor, Nathan Lynch, Nicholas Miehlbradt, Nicholas Piggin, Nick Desaulniers, Nysal Jan K.A, Pali Rohár, Paul Gortmaker, Paul Mackerras, Petr Vaněk, Randy Dunlap, Rob Herring, Sachin Sant, Sean Christopherson, Segher Boessenkool, and Timothy Pearson. * tag 'powerpc-6.4-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (156 commits) powerpc/64s: Disable pcrel code model on Clang powerpc: Fix merge conflict between pcrel and copy_thread changes powerpc/configs/powernv: Add IGB=y powerpc/configs/64s: Drop JFS Filesystem powerpc/configs/64s: Use EXT4 to mount EXT2 filesystems powerpc/configs: Make pseries_defconfig an alias for ppc64le_guest powerpc/configs: Make pseries_le an alias for ppc64le_guest powerpc/configs: Incorporate generic kvm_guest.config into guest configs powerpc/configs: Add IBMVETH=y and IBMVNIC=y to guest configs powerpc/configs/64s: Enable Device Mapper options powerpc/configs/64s: Enable PSTORE powerpc/configs/64s: Enable VLAN support powerpc/configs/64s: Enable BLK_DEV_NVME powerpc/configs/64s: Drop REISERFS powerpc/configs/64s: Use SHA512 for module signatures powerpc/configs/64s: Enable IO_STRICT_DEVMEM powerpc/configs/64s: Enable SCHEDSTATS powerpc/configs/64s: Enable DEBUG_VM & other options powerpc/configs/64s: Enable EMULATED_STATS powerpc/configs/64s: Enable KUNIT and most tests ...
| * cpuidle: pseries: Mark ->enter() functions as __cpuidleMichael Ellerman2023-04-201-14/+14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Code in the idle path is not allowed to be instrumented because RCU is disabled, see commit 0e985e9d2286 ("cpuidle: Add comments about noinstr/__cpuidle usage"). Mark the cpuidle ->enter() callbacks as __cpuidle and use the raw_local_irq_*() routines to ensure that is the case. Reported-by: Sachin Sant <sachinp@linux.ibm.com> Link: https://lore.kernel.org/all/4C073F6A-C812-4C4A-BB7A-ECD10B75FB88@linux.ibm.com/ Suggested-by: Peter Zijlstra <peterz@infradead.org> Tested-by: Sachin Sant <sachinp@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20230406144535.3786008-3-mpe@ellerman.id.au
* | Merge tag 'driver-core-6.4-rc1' of ↵Linus Torvalds2023-04-273-5/+12
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core Pull driver core updates from Greg KH: "Here is the large set of driver core changes for 6.4-rc1. Once again, a busy development cycle, with lots of changes happening in the driver core in the quest to be able to move "struct bus" and "struct class" into read-only memory, a task now complete with these changes. This will make the future rust interactions with the driver core more "provably correct" as well as providing more obvious lifetime rules for all busses and classes in the kernel. The changes required for this did touch many individual classes and busses as many callbacks were changed to take const * parameters instead. All of these changes have been submitted to the various subsystem maintainers, giving them plenty of time to review, and most of them actually did so. Other than those changes, included in here are a small set of other things: - kobject logging improvements - cacheinfo improvements and updates - obligatory fw_devlink updates and fixes - documentation updates - device property cleanups and const * changes - firwmare loader dependency fixes. All of these have been in linux-next for a while with no reported problems" * tag 'driver-core-6.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (120 commits) device property: make device_property functions take const device * driver core: update comments in device_rename() driver core: Don't require dynamic_debug for initcall_debug probe timing firmware_loader: rework crypto dependencies firmware_loader: Strip off \n from customized path zram: fix up permission for the hot_add sysfs file cacheinfo: Add use_arch[|_cache]_info field/function arch_topology: Remove early cacheinfo error message if -ENOENT cacheinfo: Check cache properties are present in DT cacheinfo: Check sib_leaf in cache_leaves_are_shared() cacheinfo: Allow early level detection when DT/ACPI info is missing/broken cacheinfo: Add arm64 early level initializer implementation cacheinfo: Add arch specific early level initializer tty: make tty_class a static const structure driver core: class: remove struct class_interface * from callbacks driver core: class: mark the struct class in struct class_interface constant driver core: class: make class_register() take a const * driver core: class: mark class_release() as taking a const * driver core: remove incorrect comment for device_create* MIPS: vpe-cmp: remove module owner pointer from struct class usage. ...
| * \ Merge 6.3-rc5 into driver-core-nextGreg Kroah-Hartman2023-04-031-1/+2
| |\ \ | | | | | | | | | | | | | | | | | | | | | | | | We need the fixes in here for testing, as well as the driver core changes for documentation updates to build on. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * | | cpuidle: move to use bus_get_dev_root()Greg Kroah-Hartman2023-03-223-5/+12
| | |/ | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Direct access to the struct bus_type dev_root pointer is going away soon so replace that with a call to bus_get_dev_root() instead, which is what it is there for. This allows us to clean up the cpuidle_add_interface() call a bit as it was only called in one place, with the same argument so just put that into the function itself. Note that cpuidle_remove_interface() should also probably be removed in the future as there are no callers of it for some reason. Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: linux-pm@vger.kernel.org Acked-by: Rafael J. Wysocki <rafael@kernel.org> Link: https://lore.kernel.org/r/20230322090557.2943479-1-gregkh@linuxfoundation.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | | Merge tag 'devicetree-for-6.4-2' of ↵Linus Torvalds2023-04-274-5/+2
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux Pull more devicetree updates from Rob Herring: - First part of DT header detangling dropping cpu.h from of_device.h and replacing some includes with forward declarations. A handful of drivers needed some adjustment to their includes as a result. - Refactor of_device.h to be used by bus drivers rather than various device drivers. This moves non-bus related functions out of of_device.h. The end goal is for of_platform.h and of_device.h to stop including each other. - Refactor open coded parsing of "ranges" in some bus drivers to use DT address parsing functions - Add some new address parsing functions of_property_read_reg(), of_range_count(), and of_range_to_resource() in preparation to convert more open coded parsing of DT addresses to use them. - Treewide clean-ups to use of_property_read_bool() and of_property_present() as appropriate. The ones here are the ones that didn't get picked up elsewhere. * tag 'devicetree-for-6.4-2' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (34 commits) bus: tegra-gmi: Replace of_platform.h with explicit includes hte: Use of_property_present() for testing DT property presence w1: w1-gpio: Use of_property_read_bool() for boolean properties virt: fsl: Use of_property_present() for testing DT property presence soc: fsl: Use of_property_present() for testing DT property presence sbus: display7seg: Use of_property_read_bool() for boolean properties sparc: Use of_property_read_bool() for boolean properties sparc: Use of_property_present() for testing DT property presence bus: mvebu-mbus: Remove open coded "ranges" parsing of/address: Add of_property_read_reg() helper of/address: Add of_range_count() helper of/address: Add support for 3 address cell bus of/address: Add of_range_to_resource() helper of: unittest: Add bus address range parsing tests of: Drop cpu.h include from of_device.h OPP: Adjust includes to remove of_device.h irqchip: loongson-eiointc: Add explicit include for cpuhotplug.h cpuidle: Adjust includes to remove of_device.h cpufreq: sun50i: Add explicit include for cpu.h cpufreq: Adjust includes to remove of_device.h ...
| * | | cpuidle: Adjust includes to remove of_device.hRob Herring2023-04-144-5/+2
| |/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Now that of_cpu_device_node_get() is defined in of.h, of_device.h is just implicitly including other includes, and is no longer needed. Adjust the include files with what was implicitly included by of_device.h (cpu.h, cpuhotplug.h, of.h, and of_platform.h) and drop including of_device.h. Acked-by: Anup Patel <anup@brainfault.org> Acked-by: Rafael J. Wysocki <rafael@kernel.org> Acked-by: Sudeep Holla <sudeep.holla@arm.com> Link: https://lore.kernel.org/r/20230329-dt-cpu-header-cleanups-v1-16-581e2605fe47@kernel.org Signed-off-by: Rob Herring <robh@kernel.org>
* | / cpuidle: Use of_property_present() for testing DT property presenceRob Herring2023-03-272-4/+4
| |/ |/| | | | | | | | | | | | | | | | | | | | | | | | | It is preferred to use typed property access functions (i.e. of_property_read_<type> functions) rather than low-level of_get_property/of_find_property functions for reading properties. As part of this, convert of_get_property/of_find_property calls to the recently added of_property_present() helper when we just want to test for presence of a property and nothing more. Signed-off-by: Rob Herring <robh@kernel.org> Acked-by: Ulf Hansson <ulf.hansson@linaro.org> Acked-by: Anup Patel <anup@brainfault.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* | cpuidle: psci: Iterate backwards over list in psci_pd_remove()Shawn Guo2023-03-071-1/+2
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In case that psci_pd_init_topology() fails for some reason, psci_pd_remove() will be responsible for deleting provider and removing genpd from psci_pd_providers list. There will be a failure when removing the cluster PD, because the cpu (child) PDs haven't been removed. [ 0.050232] CPUidle PSCI: init PM domain cpu0 [ 0.050278] CPUidle PSCI: init PM domain cpu1 [ 0.050329] CPUidle PSCI: init PM domain cpu2 [ 0.050370] CPUidle PSCI: init PM domain cpu3 [ 0.050422] CPUidle PSCI: init PM domain cpu-cluster0 [ 0.050475] PM: genpd_remove: unable to remove cpu-cluster0 [ 0.051412] PM: genpd_remove: removed cpu3 [ 0.051449] PM: genpd_remove: removed cpu2 [ 0.051499] PM: genpd_remove: removed cpu1 [ 0.051546] PM: genpd_remove: removed cpu0 Fix the problem by iterating the provider list reversely, so that parent PD gets removed after child's PDs like below. [ 0.029052] CPUidle PSCI: init PM domain cpu0 [ 0.029076] CPUidle PSCI: init PM domain cpu1 [ 0.029103] CPUidle PSCI: init PM domain cpu2 [ 0.029124] CPUidle PSCI: init PM domain cpu3 [ 0.029151] CPUidle PSCI: init PM domain cpu-cluster0 [ 0.029647] PM: genpd_remove: removed cpu0 [ 0.029666] PM: genpd_remove: removed cpu1 [ 0.029690] PM: genpd_remove: removed cpu2 [ 0.029714] PM: genpd_remove: removed cpu3 [ 0.029738] PM: genpd_remove: removed cpu-cluster0 Fixes: a65a397f2451 ("cpuidle: psci: Add support for PM domains by using genpd") Reviewed-by: Sudeep Holla <sudeep.holla@arm.com> Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Cc: 5.10+ <stable@vger.kernel.org> # 5.10+ Signed-off-by: Rafael J. Wysocki <rjw@rjwysocki.net>
* Merge tag 'soc-drivers-6.3' of ↵Linus Torvalds2023-02-271-1/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc Pull ARM SoC driver updates from Arnd Bergmann: "As usual, there are lots of minor driver changes across SoC platforms from NXP, Amlogic, AMD Zynq, Mediatek, Qualcomm, Apple and Samsung. These usually add support for additional chip variations in existing drivers, but also add features or bugfixes. The SCMI firmware subsystem gains a unified raw userspace interface through debugfs, which can be used for validation purposes. Newly added drivers include: - New power management drivers for StarFive JH7110, Allwinner D1 and Renesas RZ/V2M - A driver for Qualcomm battery and power supply status - A SoC device driver for identifying Nuvoton WPCM450 chips - A regulator coupler driver for Mediatek MT81xxv" * tag 'soc-drivers-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (165 commits) power: supply: Introduce Qualcomm PMIC GLINK power supply soc: apple: rtkit: Do not copy the reg state structure to the stack soc: sunxi: SUN20I_PPU should depend on PM memory: renesas-rpc-if: Remove redundant division of dummy soc: qcom: socinfo: Add IDs for IPQ5332 and its variant dt-bindings: arm: qcom,ids: Add IDs for IPQ5332 and its variant dt-bindings: power: qcom,rpmpd: add RPMH_REGULATOR_LEVEL_LOW_SVS_L1 firmware: qcom_scm: Move qcom_scm.h to include/linux/firmware/qcom/ MAINTAINERS: Update qcom CPR maintainer entry dt-bindings: firmware: document Qualcomm SM8550 SCM dt-bindings: firmware: qcom,scm: add qcom,scm-sa8775p compatible soc: qcom: socinfo: Add Soc IDs for IPQ8064 and variants dt-bindings: arm: qcom,ids: Add Soc IDs for IPQ8064 and variants soc: qcom: socinfo: Add support for new field in revision 17 soc: qcom: smd-rpm: Add IPQ9574 compatible soc: qcom: pmic_glink: remove redundant calculation of svid soc: qcom: stats: Populate all subsystem debugfs files dt-bindings: soc: qcom,rpmh-rsc: Update to allow for generic nodes soc: qcom: pmic_glink: add CONFIG_NET/CONFIG_OF dependencies soc: qcom: pmic_glink: Introduce altmode support ...
| * firmware: qcom_scm: Move qcom_scm.h to include/linux/firmware/qcom/Elliot Berman2023-02-091-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | Move include/linux/qcom_scm.h to include/linux/firmware/qcom/qcom_scm.h. This removes 1 of a few remaining Qualcomm-specific headers into a more approciate subdirectory under include/. Suggested-by: Bjorn Andersson <andersson@kernel.org> Signed-off-by: Elliot Berman <quic_eberman@quicinc.com> Reviewed-by: Guru Das Srinagesh <quic_gurus@quicinc.com> Acked-by: Mukesh Ojha <quic_mojha@quicinc.com> Signed-off-by: Bjorn Andersson <andersson@kernel.org> Link: https://lore.kernel.org/r/20230203210956.3580811-1-quic_eberman@quicinc.com
* | Merge tag 'pm-6.3-rc1' of ↵Linus Torvalds2023-02-218-10/+125
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull power management updates from Rafael Wysocki: "These add EPP support to the AMD P-state cpufreq driver, add support for new platforms to the Intel RAPL power capping driver, intel_idle and the Qualcomm cpufreq driver, enable thermal cooling for Tegra194, drop the custom cpufreq driver for loongson1 that is not necessary any more (and the corresponding cpufreq platform device), fix assorted issues and clean up code. Specifics: - Add EPP support to the AMD P-state cpufreq driver (Perry Yuan, Wyes Karny, Arnd Bergmann, Bagas Sanjaya) - Drop the custom cpufreq driver for loongson1 that is not necessary any more and the corresponding cpufreq platform device (Keguang Zhang) - Remove "select SRCU" from system sleep, cpufreq and OPP Kconfig entries (Paul E. McKenney) - Enable thermal cooling for Tegra194 (Yi-Wei Wang) - Register module device table and add missing compatibles for cpufreq-qcom-hw (Nícolas F. R. A. Prado, Abel Vesa and Luca Weiss) - Various dt binding updates for qcom-cpufreq-nvmem and opp-v2-kryo-cpu (Christian Marangi) - Make kobj_type structure in the cpufreq core constant (Thomas Weißschuh) - Make cpufreq_unregister_driver() return void (Uwe Kleine-König) - Make the TEO cpuidle governor check CPU utilization in order to refine idle state selection (Kajetan Puchalski) - Make Kconfig select the haltpoll cpuidle governor when the haltpoll cpuidle driver is selected and replace a default_idle() call in that driver with arch_cpu_idle() to allow MWAIT to be used (Li RongQing) - Add Emerald Rapids Xeon support to the intel_idle driver (Artem Bityutskiy) - Add ARCH_SUSPEND_POSSIBLE dependencies for ARMv4 cpuidle drivers to avoid randconfig build failures (Arnd Bergmann) - Make kobj_type structures used in the cpuidle sysfs interface constant (Thomas Weißschuh) - Make the cpuidle driver registration code update microsecond values of idle state parameters in accordance with their nanosecond values if they are provided (Rafael Wysocki) - Make the PSCI cpuidle driver prevent topology CPUs from being suspended on PREEMPT_RT (Krzysztof Kozlowski) - Document that pm_runtime_force_suspend() cannot be used with DPM_FLAG_SMART_SUSPEND (Richard Fitzgerald) - Add EXPORT macros for exporting PM functions from drivers (Richard Fitzgerald) - Remove /** from non-kernel-doc comments in hibernation code (Randy Dunlap) - Fix possible name leak in powercap_register_zone() (Yang Yingliang) - Add Meteor Lake and Emerald Rapids support to the intel_rapl power capping driver (Zhang Rui) - Modify the idle_inject power capping facility to support 100% idle injection (Srinivas Pandruvada) - Fix large time windows handling in the intel_rapl power capping driver (Zhang Rui) - Fix memory leaks with using debugfs_lookup() in the generic PM domains and Energy Model code (Greg Kroah-Hartman) - Add missing 'cache-unified' property in the example for kryo OPP bindings (Rob Herring) - Fix error checking in opp_migrate_dentry() (Qi Zheng) - Let qcom,opp-fuse-level be a 2-long array for qcom SoCs (Konrad Dybcio) - Modify some power management utilities to use the canonical ftrace path (Ross Zwisler) - Correct spelling problems for Documentation/power/ as reported by codespell (Randy Dunlap)" * tag 'pm-6.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (53 commits) Documentation: amd-pstate: disambiguate user space sections cpufreq: amd-pstate: Fix invalid write to MSR_AMD_CPPC_REQ dt-bindings: opp: opp-v2-kryo-cpu: enlarge opp-supported-hw maximum dt-bindings: cpufreq: qcom-cpufreq-nvmem: make cpr bindings optional dt-bindings: cpufreq: qcom-cpufreq-nvmem: specify supported opp tables PM: Add EXPORT macros for exporting PM functions cpuidle: psci: Do not suspend topology CPUs on PREEMPT_RT MIPS: loongson32: Drop obsolete cpufreq platform device powercap: intel_rapl: Fix handling for large time window cpuidle: driver: Update microsecond values of state parameters as needed cpuidle: sysfs: make kobj_type structures constant cpuidle: add ARCH_SUSPEND_POSSIBLE dependencies PM: EM: fix memory leak with using debugfs_lookup() PM: domains: fix memory leak with using debugfs_lookup() cpufreq: Make kobj_type structure constant cpufreq: davinci: Fix clk use after free cpufreq: amd-pstate: avoid uninitialized variable use cpufreq: Make cpufreq_unregister_driver() return void OPP: fix error checking in opp_migrate_dentry() dt-bindings: cpufreq: cpufreq-qcom-hw: Add SM8550 compatible ...
| * | cpuidle: psci: Do not suspend topology CPUs on PREEMPT_RTKrzysztof Kozlowski2023-02-133-2/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The runtime Power Management of CPU topology is not compatible with PREEMPT_RT: 1. Core cpuidle path disables IRQs. 2. Core cpuidle calls cpuidle-psci. 3. cpuidle-psci in __psci_enter_domain_idle_state() calls pm_runtime_put_sync_suspend() and pm_runtime_get_sync() which use spinlocks (which are sleeping on PREEMPT_RT). Deep sleep modes are not a priority of Realtime kernels because the latencies might become unpredictable. On the other hand the PSCI CPU idle power domain is a parent of other devices and power domain controllers, thus it cannot be simply skipped (e.g. on Qualcomm SM8250). Disable the idle callbacks in cpuidle-psci and mark the domain as always on. This is a trade-off between making PREEMPT_RT working and still having a proper power domain hierarchy in the system. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> Tested-by: Adrien Thierry <athierry@redhat.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| * | cpuidle: driver: Update microsecond values of state parameters as neededRafael J. Wysocki2023-02-131-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If the cpuidle driver provides the target residency and exit latency in nanoseconds, the corresponding values in microseconds need to be set to reflect the provided numbers in order for the sysfs interface to show them correctly, so make __cpuidle_driver_init() do that. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Tested-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
| * | cpuidle: sysfs: make kobj_type structures constantThomas Weißschuh2023-02-091-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since commit ee6d3dd4ed48 ("driver core: make kobj_type constant.") the driver core allows the usage of const struct kobj_type. Take advantage of this to constify the structure definitions to prevent modification at runtime. Signed-off-by: Thomas Weißschuh <linux@weissschuh.net> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| * | cpuidle: add ARCH_SUSPEND_POSSIBLE dependenciesArnd Bergmann2023-02-091-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some ARMv4 processors don't support suspend, which leads to a build failure with the tegra and qualcomm cpuidle driver: WARNING: unmet direct dependencies detected for ARM_CPU_SUSPEND Depends on [n]: ARCH_SUSPEND_POSSIBLE [=n] Selected by [y]: - ARM_TEGRA_CPUIDLE [=y] && CPU_IDLE [=y] && (ARM [=y] || ARM64) && (ARCH_TEGRA [=n] || COMPILE_TEST [=y]) && !ARM64 && MMU [=y] arch/arm/kernel/sleep.o: in function `__cpu_suspend': (.text+0x68): undefined reference to `cpu_sa110_suspend_size' (.text+0x68): undefined reference to `cpu_fa526_suspend_size' Add an explicit dependency to make randconfig builds avoid this combination. Fixes: faae6c9f2e68 ("cpuidle: tegra: Enable compile testing") Fixes: a871be6b8eee ("cpuidle: Convert Qualcomm SPM driver to a generic CPUidle driver") Link: https://lore.kernel.org/all/20211013160125.772873-1-arnd@kernel.org/ Cc: All applicable <stable@vger.kernel.org> Reviewed-by: Dmitry Osipenko <digetx@gmail.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| * | cpuidle-haltpoll: Replace default_idle() with arch_cpu_idle()Li RongQing2023-01-201-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When a KVM guest has MWAIT, mwait_idle() is used as the default idle function. However, the cpuidle-haltpoll driver calls default_idle() from default_enter_idle() directly and that one uses HLT instead of MWAIT, which may affect performance adversely, because MWAIT is preferred to HLT as explained by the changelog of commit aebef63cf7ff ("x86: Remove vendor checks from prefer_mwait_c1_over_halt"). Make default_enter_idle() call arch_cpu_idle(), which can use MWAIT, instead of default_idle() to address this issue. Suggested-by: Thomas Gleixner <tglx@linutronix.de> Suggested-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by: Li RongQing <lirongqing@baidu.com> [ rjw: Changelog rewrite ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| * | cpuidle-haltpoll: select haltpoll governorLi RongQing2023-01-131-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | The haltpoll cpuidle driver should select the haltpoll governor, so as to ensure that they work together. Signed-off-by: Li RongQing <lirongqing@baidu.com> [ rjw: Changelog edits ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| * | cpuidle: teo: Introduce util-awarenessKajetan Puchalski2023-01-101-1/+93
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Modern interactive systems, such as recent Android phones, tend to have power efficient shallow idle states. Selecting deeper idle states on a device while a latency-sensitive workload is running can adversely impact performance due to increased latency. Additionally, if the CPU wakes up from a deeper sleep before its target residency as is often the case, it results in a waste of energy on top of that. At the moment, none of the available idle governors take any scheduling information into account. They also tend to overestimate the idle duration quite often, which causes them to select excessively deep idle states, thus leading to increased wakeup latency and lower performance with no power saving. For 'menu' while web browsing on Android for instance, those types of wakeups ('too deep') account for over 24% of all wakeups. At the same time, on some platforms idle state 0 can be power efficient enough to warrant wanting to prefer it over idle state 1. This is because the power usage of the two states can be so close that sufficient amounts of too deep state 1 sleeps can completely offset the state 1 power saving to the point where it would've been more power efficient to just use state 0 instead. This is, of course, for systems where state 0 is not a polling state, such as arm-based devices. Sleeps that happened in state 0 while they could have used state 1 ('too shallow') only save less power than they otherwise could have. Too deep sleeps, on the other hand, harm performance and nullify the potential power saving from using state 1 in the first place. While taking this into account, it is clear that on balance it is preferable for an idle governor to have more too shallow sleeps instead of more too deep sleeps on those kinds of platforms. This patch specifically tunes TEO to prefer shallower idle states in order to reduce wakeup latency and achieve better performance. To this end, before selecting the next idle state it uses the avg_util signal of a CPU's runqueue in order to determine to what extent the CPU is being utilized. This util value is then compared to a threshold defined as a percentage of the CPU's capacity (capacity >> 6 ie. ~1.5% in the current implementation). If the util is above the threshold, the index of the idle state selected by TEO metrics will be reduced by 1, thus selecting a shallower state. If the util is below the threshold, the governor defaults to the TEO metrics mechanism to try to select the deepest available idle state based on the closest timer event and its own correctness. The main goal of this is to reduce latency and increase performance for some workloads. Under some workloads it will result in an increase in power usage (Geekbench 5) while for other workloads it will also result in a decrease in power usage compared to TEO (PCMark Web, Jankbench, Speedometer). It can provide drastically decreased latency and performance benefits in certain types of workloads that are sensitive to latency. Example test results: 1. GB5 (better score, latency & more power usage) | metric | menu | teo | teo-util-aware | | ------------------------------------- | -------------- | ----------------- | ----------------- | | gmean score | 2826.5 (0.0%) | 2764.8 (-2.18%) | 2865 (1.36%) | | gmean power usage [mW] | 2551.4 (0.0%) | 2606.8 (2.17%) | 2722.3 (6.7%) | | gmean too deep % | 14.99% | 9.65% | 4.02% | | gmean too shallow % | 2.5% | 5.96% | 14.59% | | gmean task wakeup latency (asynctask) | 78.16μs (0.0%) | 61.60μs (-21.19%) | 54.45μs (-30.34%) | 2. Jankbench (better score, latency & less power usage) | metric | menu | teo | teo-util-aware | | ------------------------------------- | -------------- | ----------------- | ----------------- | | gmean frame duration | 13.9 (0.0%) | 14.7 (6.0%) | 12.6 (-9.0%) | | gmean jank percentage | 1.5 (0.0%) | 2.1 (36.99%) | 1.3 (-17.37%) | | gmean power usage [mW] | 144.6 (0.0%) | 136.9 (-5.27%) | 121.3 (-16.08%) | | gmean too deep % | 26.00% | 11.00% | 2.54% | | gmean too shallow % | 4.74% | 11.89% | 21.93% | | gmean wakeup latency (RenderThread) | 139.5μs (0.0%) | 116.5μs (-16.49%) | 91.11μs (-34.7%) | | gmean wakeup latency (surfaceflinger) | 124.0μs (0.0%) | 151.9μs (22.47%) | 87.65μs (-29.33%) | Signed-off-by: Kajetan Puchalski <kajetan.puchalski@arm.com> [ rjw: Comment edits and white space adjustments ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| * | cpuidle: teo: Optionally skip polling states in teo_find_shallower_state()Kajetan Puchalski2023-01-101-3/+5
| |/ | | | | | | | | | | | | | | | | | | | | | | Add a no_poll flag to teo_find_shallower_state() that will let the function optionally not consider polling states. This allows the caller to guard against the function inadvertently resulting in TEO putting the CPU in a polling state when that behaviour is undesirable. Signed-off-by: Kajetan Puchalski <kajetan.puchalski@arm.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* | cpuidle: Fix poll_idle() noinstr annotationPeter Zijlstra2023-01-312-3/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The instrumentation_begin()/end() annotations in poll_idle() were complete nonsense. Specifically they caused tracing to happen in the middle of noinstr code, resulting in RCU splats. Now that local_clock() is noinstr, mark up the rest and let it rip. Fixes: 00717eb8c955 ("cpuidle: Annotate poll_idle()") Reported-by: kernel test robot <oliver.sang@intel.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Link: https://lore.kernel.org/oe-lkp/202301192148.58ece903-oliver.sang@intel.com Link: https://lore.kernel.org/r/20230126151323.819534689@infradead.org
* | cpuidle, arm64: Fix the ARM64 cpuidle logicPeter Zijlstra2023-01-181-5/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The recent cpuidle changes started triggering RCU splats on Juno development boards: | ============================= | WARNING: suspicious RCU usage | ----------------------------- | include/trace/events/ipi.h:19 suspicious rcu_dereference_check() usage! Fix cpuidle on ARM64: - ... by introducing a new 'is_rcu' flag to the cpuidle helpers & make ARM64 use it, as ARM64 wants to keep RCU active longer and wants to do the ct_cpuidle_enter()/exit() dance itself. - Also update the PSCI driver accordingly. - This also removes the last known RCU_NONIDLE() user as a bonus. Reported-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Tested-by: Sudeep Holla <sudeep.holla@arm.com> Tested-by: Mark Rutland <mark.rutland@arm.com> Reviewed-by: Mark Rutland <mark.rutland@arm.com> Link: https://lore.kernel.org/r/Y8Z31UbzG3LJgAXE@hirez.programming.kicks-ass.net --
* | cpuidle: mvebu: Fix duplicate flags assignmentArnd Bergmann2023-01-181-6/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The added '.flags' value is sometimes ignored here because it gets overwritten by another initialization: drivers/cpuidle/cpuidle-mvebu-v7.c:24:33: error: initialized field overwritten [-Werror=override-init] 24 | #define MVEBU_V7_FLAG_DEEP_IDLE 0x10000 | ^~~~~~~ drivers/cpuidle/cpuidle-mvebu-v7.c:69:43: note: in expansion of macro 'MVEBU_V7_FLAG_DEEP_IDLE' ... Merge the two fields into one. Fixes: 4ce40e9dbe83 ("cpuidle, armada: Push RCU-idle into driver") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Ingo Molnar <mingo@kernel.org> Acked-by: Peter Zijlstra <peterz@infradead.org> Link: https://lore.kernel.org/r/20230117164642.1672784-1-arnd@kernel.org
* | cpuidle: Add comments about noinstr/__cpuidle usagePeter Zijlstra2023-01-131-0/+12
| | | | | | | | | | | | | | | | Add a few words on noinstr / __cpuidle usage. Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Link: https://lore.kernel.org/r/20230112195542.397238052@infradead.org
* | cpuidle, arch: Mark all ct_cpuidle_enter() callers __cpuidlePeter Zijlstra2023-01-137-30/+25
| | | | | | | | | | | | | | | | | | | | | | | | For all cpuidle drivers that use CPUIDLE_FLAG_RCU_IDLE, ensure that all functions that call ct_cpuidle_enter() are marked __cpuidle. ( due to lack of noinstr validation on these platforms it is entirely possible this isn't complete ) Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Link: https://lore.kernel.org/r/20230112195542.274096325@infradead.org
* | cpuidle: Ensure ct_cpuidle_enter() is always called from noinstr/__cpuidlePeter Zijlstra2023-01-131-9/+28
| | | | | | | | | | | | | | | | | | | | | | Tracing (kprobes included) and other compiler instrumentation relies on a normal kernel runtime. Therefore all functions that disable RCU should be noinstr, as should all functions that are called while RCU is disabled. Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Link: https://lore.kernel.org/r/20230112195542.212914195@infradead.org
* | cpuidle: Annotate poll_idle()Peter Zijlstra2023-01-131-1/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | The __cpuidle functions will become a noinstr class, as such they need explicit annotations. Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Tested-by: Tony Lindgren <tony@atomide.com> Tested-by: Ulf Hansson <ulf.hansson@linaro.org> Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Acked-by: Frederic Weisbecker <frederic@kernel.org> Link: https://lore.kernel.org/r/20230112195540.312601331@infradead.org
* | cpuidle: Fix ct_idle_*() usagePeter Zijlstra2023-01-136-17/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The whole disable-RCU, enable-IRQS dance is very intricate since changing IRQ state is traced, which depends on RCU. Add two helpers for the cpuidle case that mirror the entry code: ct_cpuidle_enter() ct_cpuidle_exit() And fix all the cases where the enter/exit dance was buggy. Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Tested-by: Tony Lindgren <tony@atomide.com> Tested-by: Ulf Hansson <ulf.hansson@linaro.org> Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Acked-by: Frederic Weisbecker <frederic@kernel.org> Link: https://lore.kernel.org/r/20230112195540.130014793@infradead.org
* | cpuidle, dt: Push RCU-idle into driverPeter Zijlstra2023-01-132-3/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Doing RCU-idle outside the driver, only to then temporarily enable it again before going idle is suboptimal. Notably: this converts all dt_init_idle_driver() and __CPU_PM_CPU_IDLE_ENTER() users for they are inextrably intertwined. Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Tested-by: Tony Lindgren <tony@atomide.com> Tested-by: Ulf Hansson <ulf.hansson@linaro.org> Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Acked-by: Frederic Weisbecker <frederic@kernel.org> Link: https://lore.kernel.org/r/20230112195540.068981667@infradead.org
* | cpuidle, armada: Push RCU-idle into driverPeter Zijlstra2023-01-131-0/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Doing RCU-idle outside the driver, only to then temporarily enable it again before going idle is suboptimal. Notably the cpu_pm_*() calls implicitly re-enable RCU for a bit. Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Tested-by: Tony Lindgren <tony@atomide.com> Tested-by: Ulf Hansson <ulf.hansson@linaro.org> Reviewed-by: Frederic Weisbecker <frederic@kernel.org> Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Link: https://lore.kernel.org/r/20230112195539.946630819@infradead.org
* | cpuidle, psci: Push RCU-idle into driverPeter Zijlstra2023-01-131-4/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Doing RCU-idle outside the driver, only to then temporarily enable it again, at least twice, before going idle is suboptimal. Notably once implicitly through the cpu_pm_*() calls and once explicitly doing ct_irq_*_irqon(). Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Tested-by: Kajetan Puchalski <kajetan.puchalski@arm.com> Tested-by: Tony Lindgren <tony@atomide.com> Tested-by: Ulf Hansson <ulf.hansson@linaro.org> Reviewed-by: Frederic Weisbecker <frederic@kernel.org> Reviewed-by: Guo Ren <guoren@kernel.org> Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Link: https://lore.kernel.org/r/20230112195539.760296658@infradead.org
* | cpuidle, tegra: Push RCU-idle into driverPeter Zijlstra2023-01-131-5/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Doing RCU-idle outside the driver, only to then temporarily enable it again, at least twice, before going idle is suboptimal. Notably once implicitly through the cpu_pm_*() calls and once explicitly doing RCU_NONIDLE(). Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Tested-by: Tony Lindgren <tony@atomide.com> Tested-by: Ulf Hansson <ulf.hansson@linaro.org> Reviewed-by: Frederic Weisbecker <frederic@kernel.org> Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Link: https://lore.kernel.org/r/20230112195539.699546331@infradead.org
* | cpuidle, riscv: Push RCU-idle into driverPeter Zijlstra2023-01-131-4/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Doing RCU-idle outside the driver, only to then temporarily enable it again, at least twice, before going idle is suboptimal. That is, once implicitly through the cpu_pm_*() calls and once explicitly doing ct_irq_*_irqon(). Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Tested-by: Tony Lindgren <tony@atomide.com> Tested-by: Ulf Hansson <ulf.hansson@linaro.org> Reviewed-by: Anup Patel <anup@brainfault.org> Reviewed-by: Frederic Weisbecker <frederic@kernel.org> Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Link: https://lore.kernel.org/r/20230112195539.637185846@infradead.org
* | cpuidle: Move IRQ state validationPeter Zijlstra2023-01-131-5/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | Make cpuidle_enter_state() consistent with the s2idle variant and verify ->enter() always returns with interrupts disabled. Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Tested-by: Tony Lindgren <tony@atomide.com> Tested-by: Ulf Hansson <ulf.hansson@linaro.org> Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Acked-by: Frederic Weisbecker <frederic@kernel.org> Link: https://lore.kernel.org/r/20230112195539.576412812@infradead.org
* | cpuidle/poll: Ensure IRQs stay disabled after cpuidle_state::enter() callsPeter Zijlstra2023-01-131-1/+3
|/ | | | | | | | | | | | | | | Make cpuidle_state::enter() methods IRQ state invariant on exit. Additionally make sure to use raw_local_irq_*() methods since this cpuidle callback will be called with RCU already disabled. Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Tested-by: Tony Lindgren <tony@atomide.com> Tested-by: Ulf Hansson <ulf.hansson@linaro.org> Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Reviewed-by: Frederic Weisbecker <frederic@kernel.org> Link: https://lore.kernel.org/r/20230112195539.515253662@infradead.org
* Merge tag 'powerpc-6.2-1' of ↵Linus Torvalds2022-12-192-3/+10
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux Pull powerpc updates from Michael Ellerman: - Add powerpc qspinlock implementation optimised for large system scalability and paravirt. See the merge message for more details - Enable objtool to be built on powerpc to generate mcount locations - Use a temporary mm for code patching with the Radix MMU, so the writable mapping is restricted to the patching CPU - Add an option to build the 64-bit big-endian kernel with the ELFv2 ABI - Sanitise user registers on interrupt entry on 64-bit Book3S - Many other small features and fixes Thanks to Aboorva Devarajan, Angel Iglesias, Benjamin Gray, Bjorn Helgaas, Bo Liu, Chen Lifu, Christoph Hellwig, Christophe JAILLET, Christophe Leroy, Christopher M. Riedl, Colin Ian King, Deming Wang, Disha Goel, Dmitry Torokhov, Finn Thain, Geert Uytterhoeven, Gustavo A. R. Silva, Haowen Bai, Joel Stanley, Jordan Niethe, Julia Lawall, Kajol Jain, Laurent Dufour, Li zeming, Miaoqian Lin, Michael Jeanson, Nathan Lynch, Naveen N. Rao, Nayna Jain, Nicholas Miehlbradt, Nicholas Piggin, Pali Rohár, Randy Dunlap, Rohan McLure, Russell Currey, Sathvika Vasireddy, Shaomin Deng, Stephen Kitt, Stephen Rothwell, Thomas Weißschuh, Tiezhu Yang, Uwe Kleine-König, Xie Shaowen, Xiu Jianfeng, XueBing Chen, Yang Yingliang, Zhang Jiaming, ruanjinjie, Jessica Yu, and Wolfram Sang. * tag 'powerpc-6.2-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (181 commits) powerpc/code-patching: Fix oops with DEBUG_VM enabled powerpc/qspinlock: Fix 32-bit build powerpc/prom: Fix 32-bit build powerpc/rtas: mandate RTAS syscall filtering powerpc/rtas: define pr_fmt and convert printk call sites powerpc/rtas: clean up includes powerpc/rtas: clean up rtas_error_log_max initialization powerpc/pseries/eeh: use correct API for error log size powerpc/rtas: avoid scheduling in rtas_os_term() powerpc/rtas: avoid device tree lookups in rtas_os_term() powerpc/rtasd: use correct OF API for event scan rate powerpc/rtas: document rtas_call() powerpc/pseries: unregister VPA when hot unplugging a CPU powerpc/pseries: reset the RCU watchdogs after a LPM powerpc: Take in account addition CPU node when building kexec FDT powerpc: export the CPU node count powerpc/cpuidle: Set CPUIDLE_FLAG_POLLING for snooze state powerpc/dts/fsl: Fix pca954x i2c-mux node names cxl: Remove unnecessary cxl_pci_window_alignment() selftests/powerpc: Fix resource leaks ...
| * powerpc/cpuidle: Set CPUIDLE_FLAG_POLLING for snooze stateAboorva Devarajan2022-12-062-3/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | During the comparative study of cpuidle governors, it is noticed that the menu governor does not select CEDE state in some scenarios even though when the sleep duration of the CPU exceeds the target residency of the CEDE idle state this is because the CPU exits the snooze "polling" state when snooze time limit is reached in the snooze_loop(), which is not a real wake up and it just means that the polling state selection was not adequate. cpuidle governors rely on CPUIDLE_FLAG_POLLING flag to be set for the polling states to handle the condition mentioned above. Hence, set the CPUIDLE_FLAG_POLLING flag for snooze state (polling state) in powerpc arch to make the cpuidle governor work as expected. Reference Commits: - Timeout enabled for snooze state: commit 78eaa10f027c ("cpuidle: powernv/pseries: Auto-promotion of snooze to deeper idle state") - commit dc2251bf98c6 ("cpuidle: Eliminate the CPUIDLE_DRIVER_STATE_START symbol") - Fix wakeup stats in governor for polling states commit 5f26bdceb9c0 ("cpuidle: menu: Fix wakeup statistics updates for polling state") Signed-off-by: Aboorva Devarajan <aboorvad@linux.vnet.ibm.com> Tested-by: Vishal Chourasia <vishalc@linux.vnet.ibm.com> Reviewed-by: Vaidyanathan Srinivasan <svaidy@linux.ibm.com> Reviewed-by: Vishal Chourasia <vishalc@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20221114145611.37669-1-aboorvad@linux.vnet.ibm.com
* | cpuidle: dt: Clarify a comment and simplify code in dt_init_idle_driver()Ulf Hansson2022-10-281-6/+3
| | | | | | | | | | | | | | | | | | The drv->state_count is assigned the total number of available states, so let's make that clear. Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Reviewed-by: Sudeep Holla <sudeep.holla@arm.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* | cpuidle: dt: Return the correct numbers of parsed idle statesUlf Hansson2022-10-281-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | While we correctly skips to initialize an idle state from a disabled idle state node in DT, the returned value from dt_init_idle_driver() don't get adjusted accordingly. Instead the number of found idle state nodes are returned, while the callers are expecting the number of successfully initialized idle states from DT. This leads to cpuidle drivers unnecessarily continues to initialize their idle state specific data. Moreover, in the case when all idle states have been disabled in DT, we would end up registering a cpuidle driver, rather than relying on the default arch specific idle call. Fixes: 9f14da345599 ("drivers: cpuidle: implement DT based idle states infrastructure") Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Reviewed-by: Sudeep Holla <sudeep.holla@arm.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* | cpuidle: psci: Extend information in log about OSI/PC modeUlf Hansson2022-10-281-1/+2
|/ | | | | | | | | | | | It's useful to understand whether we are using OS-initiated (OSI) mode or Platform Coordinated (PC) mode, when initializing the CPU PM domains. Therefore, let's extend the print in the log after a successful probe with this information. Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Acked-by: Sudeep Holla <sudeep.holla@arm.com Acked-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* Merge tag 'riscv-for-linus-6.1-mw1' of ↵Linus Torvalds2022-10-091-1/+6
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux Pull RISC-V updates from Palmer Dabbelt: - Improvements to the CPU topology subsystem, which fix some issues where RISC-V would report bad topology information. - The default NR_CPUS has increased to XLEN, and the maximum configurable value is 512. - The CD-ROM filesystems have been enabled in the defconfig. - Support for THP_SWAP has been added for rv64 systems. There are also a handful of cleanups and fixes throughout the tree. * tag 'riscv-for-linus-6.1-mw1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: riscv: enable THP_SWAP for RV64 RISC-V: Print SSTC in canonical order riscv: compat: s/failed/unsupported if compat mode isn't supported RISC-V: Increase range and default value of NR_CPUS cpuidle: riscv-sbi: Fix CPU_PM_CPU_IDLE_ENTER_xyz() macro usage perf: RISC-V: throttle perf events perf: RISC-V: exclude invalid pmu counters from SBI calls riscv: enable CD-ROM file systems in defconfig riscv: topology: fix default topology reporting arm64: topology: move store_cpu_topology() to shared code
| * cpuidle: riscv-sbi: Fix CPU_PM_CPU_IDLE_ENTER_xyz() macro usageAnup Patel2022-09-231-1/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently, we are using CPU_PM_CPU_IDLE_ENTER_PARAM() for all SBI HSM suspend types so retentive suspend types are also treated non-retentive and kernel will do redundant additional work for these states. The BIT[31] of SBI HSM suspend types allows us to differentiate between retentive and non-retentive suspend types so we should use this BIT to call appropriate CPU_PM_CPU_IDLE_ENTER_xyz() macro. Fixes: 6abf32f1d9c5 ("cpuidle: Add RISC-V SBI CPU idle driver") Signed-off-by: Anup Patel <apatel@ventanamicro.com> Link: https://lore.kernel.org/r/20220718084553.2056169-1-apatel@ventanamicro.com/ Reviewed-by: Andrew Jones <ajones@ventanamicro.com> Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
* | Merge tag 'arm-drivers-6.1' of ↵Linus Torvalds2022-10-061-3/+1
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc Pull ARM driver updates from Arnd Bergmann: "The drivers branch for 6.1 is a bit larger than for most releases. Most of the changes come from SoC maintainers for the drivers/soc subsystem: - A new driver for error handling on the NVIDIA Tegra 'control backbone' bus. - A new driver for Qualcomm LLCC/DDR bandwidth measurement - New Rockchip rv1126 and rk3588 power domain drivers - DT binding updates for memory controllers, older Rockchip SoCs, various Mediatek devices, Qualcomm SCM firmware - Minor updates to Hisilicon LPC bus, the Allwinner SRAM driver, the Apple rtkit firmware driver, Tegra firmware - Minor updates for SoC drivers (Samsung, Mediatek, Renesas, Tegra, Qualcomm, Broadcom, NXP, ...) There are also some separate subsystem with downstream maintainers that merge updates this way: - Various updates and new drivers in the memory controller subsystem for Mediatek and Broadcom SoCs - Small set of changes in preparation to add support for FF-A v1.1 specification later, in the Arm FF-A firmware subsystem - debugfs support in the PSCI firmware subsystem" * tag 'arm-drivers-6.1' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (149 commits) ARM: remove check for CONFIG_DEBUG_LL_SER3 firmware/psci: Add debugfs support to ease debugging firmware/psci: Print a warning if PSCI doesn't accept PC mode dt-bindings: memory: snps,dw-umctl2-ddrc: Extend schema with IRQs/resets/clocks props dt-bindings: memory: snps,dw-umctl2-ddrc: Replace opencoded numbers with macros dt-bindings: memory: snps,dw-umctl2-ddrc: Use more descriptive device name dt-bindings: memory: synopsys,ddrc-ecc: Detach Zynq DDRC controller support soc: sunxi: sram: Add support for the D1 system control soc: sunxi: sram: Export the LDO control register soc: sunxi: sram: Save a pointer to the OF match data soc: sunxi: sram: Return void from the release function soc: apple: rtkit: Add apple_rtkit_poll soc: imx: add i.MX93 media blk ctrl driver soc: imx: add i.MX93 SRC power domain driver soc: imx: imx8m-blk-ctrl: Use genpd_xlate_onecell soc: imx: imx8mp-blk-ctrl: handle PCIe PHY resets soc: imx: imx8m-blk-ctrl: add i.MX8MP VPU blk ctrl soc: imx: add i.MX8MP HDMI blk ctrl HDCP/HRV_MWR soc: imx: add icc paths for i.MX8MP hsio/hdmi blk ctrl soc: imx: add icc paths for i.MX8MP media blk ctrl ...
| * | firmware/psci: Print a warning if PSCI doesn't accept PC modeDmitry Baryshkov2022-09-281-3/+1
| |/ | | | | | | | | | | | | | | | | | | | | | | | | The function psci_pd_try_set_osi_mode() will print an error if enabling OSI mode fails. To ease debugging PSCI issues print corresponding message if switching to PC mode fails too. Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Reviewed-by: Sudeep Holla <sudeep.holla@arm.com> Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> Acked-by: Mark Rutland <mark.rutland@arm.com> Link: https://lore.kernel.org/r/20220926110249.666813-1-dmitry.baryshkov@linaro.org' Signed-off-by: Arnd Bergmann <arnd@arndb.de>
* | cpuidle: Remove redundant check in cpuidle_switch_governor()Yu Liao2022-09-031-6/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | gov has already been NULL checked at the beginning of cpuidle_switch_governor, so remove redundant check. While at it, use pr_info() instead printk() to address the following checkpatch warning: WARNING: Prefer [subsystem eg: netdev]_info([subsystem]dev, ... then dev_info(dev, ... then pr_info(... to printk(KERN_INFO ... Signed-off-by: Yu Liao <liaoyu15@huawei.com> [ rjw: Subject and changelog edits, added empty line after if () ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* | cpuidle: powernv: move from strlcpy() with unused retval to strscpy()Wolfram Sang2022-08-311-2/+2
| | | | | | | | | | | | | | | | | | | | Follow the advice of the below link and prefer 'strscpy' in this subsystem. Conversion is 1:1 because the return value is not used. Generated by a coccinelle script. Link: https://lore.kernel.org/r/CAHk-=wgfRnXz0W3D37d01q3JFkr_i_uTL=V6A6G1oUZcprmknw@mail.gmail.com/ Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* | cpuidle: coupled: Drop duplicate word from a commentJason Wang2022-08-311-1/+1
|/ | | | | | | | The double `are' is duplicated in the comment, remove one. Signed-off-by: Jason Wang <wangborong@cdjrlc.com> [ rjw: New subject ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* Merge tag 'pm-5.20-rc1-2' of ↵Linus Torvalds2022-08-081-1/+5
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull more power management updates from Rafael Wysocki: "These are ARM cpufreq updates and operating performance points (OPP) updates plus one cpuidle update adding a new trace point. Specifics: - Fix return error code in mtk_cpu_dvfs_info_init (Yang Yingliang). - Minor cleanups and support for new boards for Qcom cpufreq drivers (Bryan O'Donoghue, Konrad Dybcio, Pierre Gondois, and Yicong Yang). - Fix sparse warnings for Tegra cpufreq driver (Viresh Kumar). - Make dev_pm_opp_set_regulators() accept NULL terminated list (Viresh Kumar). - Add dev_pm_opp_set_config() and friends and migrate other users and helpers to using them (Viresh Kumar). - Add support for multiple clocks for a device (Viresh Kumar and Krzysztof Kozlowski). - Configure resources before adding OPP table for Venus (Stanimir Varbanov). - Keep reference count up for opp->np and opp_table->np while they are still in use (Liang He). - Minor OPP cleanups (Viresh Kumar and Yang Li). - Add a trace event for cpuidle to track missed (too deep or too shallow) wakeups (Kajetan Puchalski)" * tag 'pm-5.20-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (55 commits) cpuidle: Add cpu_idle_miss trace event venus: pm_helpers: Fix warning in OPP during probe OPP: Don't drop opp->np reference while it is still in use OPP: Don't drop opp_table->np reference while it is still in use cpufreq: tegra194: Staticize struct tegra_cpufreq_soc instances dt-bindings: cpufreq: cpufreq-qcom-hw: Add SM6375 compatible dt-bindings: opp: Add msm8939 to the compatible list dt-bindings: opp: Add missing compat devices dt-bindings: opp: opp-v2-kryo-cpu: Fix example binding checks cpufreq: Change order of online() CB and policy->cpus modification cpufreq: qcom-hw: Remove deprecated irq_set_affinity_hint() call cpufreq: qcom-hw: Disable LMH irq when disabling policy cpufreq: qcom-hw: Reset cancel_throttle when policy is re-enabled cpufreq: qcom-cpufreq-hw: use HZ_PER_KHZ macro in units.h cpufreq: mediatek: fix error return code in mtk_cpu_dvfs_info_init() OPP: Remove dev{m}_pm_opp_of_add_table_noclk() PM / devfreq: tegra30: Register config_clks helper OPP: Allow config_clks helper for single clk case OPP: Provide a simple implementation to configure multiple clocks OPP: Assert clk_count == 1 for single clk helpers ...
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-30 15:11:29 +0100