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2022-03-18Merge branch 'thermal-hfi'Rafael J. Wysocki1-1/+5
Merge Intel Hardware Feedback Interface (HFI) thermal driver for 5.18-rc1 and update the intel-speed-select utility to support that driver. * thermal-hfi: tools/power/x86/intel-speed-select: v1.12 release tools/power/x86/intel-speed-select: HFI support tools/power/x86/intel-speed-select: OOB daemon mode thermal: intel: hfi: INTEL_HFI_THERMAL depends on NET thermal: netlink: Fix parameter type of thermal_genl_cpu_capability_event() stub thermal: intel: hfi: Notify user space for HFI events thermal: netlink: Add a new event to notify CPU capabilities change thermal: intel: hfi: Enable notification interrupt thermal: intel: hfi: Handle CPU hotplug events thermal: intel: hfi: Minimally initialize the Hardware Feedback Interface x86/cpu: Add definitions for the Intel Hardware Feedback Interface x86/Documentation: Describe the Intel Hardware Feedback Interface
2022-03-18Merge branch 'powercap'Rafael J. Wysocki2-29/+18
Merge Dynamic Thermal Power Management (DTPM) changes for 5.18-rc1: - Add DTPM hierarchy description (Daniel Lezcano). - Change the locking scheme in DTPM (Daniel Lezcano). - Fix dtpm_cpu cleanup at exit time and missing virtual DTPM pointer release (Daniel Lezcano). - Make dtpm_node_callback[] static (kernel test robot). - Fix spelling mistake "initialze" -> "initialize" in dtpm_create_hierarchy() (Colin Ian King). * powercap: powercap: DTPM: Fix spelling mistake "initialze" -> "initialize" powercap: DTPM: dtpm_node_callback[] can be static dtpm/soc/rk3399: Add the ability to unload the module powercap/dtpm_cpu: Add exit function powercap/dtpm: Move the 'root' reset place powercap/dtpm: Destroy hierarchy function powercap/dtpm: Fixup kfree for virtual node powercap/dtpm_cpu: Reset per_cpu variable in the release function powercap/dtpm: Change locking scheme rockchip/soc/drivers: Add DTPM description for rk3399 powercap/drivers/dtpm: Add dtpm devfreq with energy model support powercap/drivers/dtpm: Add CPU DT initialization support powercap/drivers/dtpm: Add hierarchy creation powercap/drivers/dtpm: Convert the init table section to a simple array
2022-03-18Merge branches 'pm-sleep', 'pm-domains' and 'pm-docs'Rafael J. Wysocki2-5/+5
Merge changes related to system sleep, PM domains changes and power management documentation changes for 5.18-rc1: - Fix load_image_and_restore() error path (Ye Bin). - Fix typos in comments in the system wakeup hadling code (Tom Rix). - Clean up non-kernel-doc comments in hibernation code (Jiapeng Chong). - Fix __setup handler error handling in system-wide suspend and hibernation core code (Randy Dunlap). - Add device name to suspend_report_result() (Youngjin Jang). - Make virtual guests honour ACPI S4 hardware signature by default (David Woodhouse). - Block power off of a parent PM domain unless child is in deepest state (Ulf Hansson). - Use dev_err_probe() to simplify error handling for generic PM domains (Ahmad Fatoum). - Fix sleep-in-atomic bug caused by genpd_debug_remove() (Shawn Guo). - Document Intel uncore frequency scaling (Srinivas Pandruvada). * pm-sleep: PM: hibernate: Honour ACPI hardware signature by default for virtual guests PM: sleep: Add device name to suspend_report_result() PM: suspend: fix return value of __setup handler PM: hibernate: fix __setup handler error handling PM: hibernate: Clean up non-kernel-doc comments PM: sleep: wakeup: Fix typos in comments PM: hibernate: fix load_image_and_restore() error path * pm-domains: PM: domains: Fix sleep-in-atomic bug caused by genpd_debug_remove() PM: domains: use dev_err_probe() to simplify error handling PM: domains: Prevent power off for parent unless child is in deepest state * pm-docs: Documentation: admin-guide: pm: Document uncore frequency scaling
2022-03-18Merge branches 'pm-cpufreq' and 'pm-cpuidle'Rafael J. Wysocki1-0/+5
Merge cpufreq and cpuidle changes for 5.18-rc1: - Make the schedutil cpufreq governor use to_gov_attr_set() instead of open coding it (Kevin Hao). - Replace acpi_bus_get_device() with acpi_fetch_acpi_dev() in the cpufreq longhaul driver (Rafael Wysocki). - Unify show() and store() naming in cpufreq and make it use __ATTR_XX (Lianjie Zhang). - Make the intel_pstate driver use the EPP value set by the firmware by default (Srinivas Pandruvada). - Re-order the init checks in the powernow-k8 cpufreq driver (Mario Limonciello). - Make the ACPI processor idle driver check for architectural support for LPI to avoid using it on x86 by mistake (Mario Limonciello). - Add Sapphire Rapids Xeon support to the intel_idle driver (Artem Bityutskiy). - Add 'preferred_cstates' module argument to the intel_idle driver to work around C1 and C1E handling issue on Sapphire Rapids (Artem Bityutskiy). - Add core C6 optimization on Sapphire Rapids to the intel_idle driver (Artem Bityutskiy). - Optimize the haltpoll cpuidle driver a bit (Li RongQing). - Remove leftover text from intel_idle() kerneldoc comment and fix up white space in intel_idle (Rafael Wysocki). * pm-cpufreq: cpufreq: powernow-k8: Re-order the init checks cpufreq: intel_pstate: Use firmware default EPP cpufreq: unify show() and store() naming and use __ATTR_XX cpufreq: longhaul: Replace acpi_bus_get_device() cpufreq: schedutil: Use to_gov_attr_set() to get the gov_attr_set cpufreq: Move to_gov_attr_set() to cpufreq.h * pm-cpuidle: cpuidle: intel_idle: Drop redundant backslash at line end cpuidle: intel_idle: Update intel_idle() kerneldoc comment cpuidle: haltpoll: Call cpuidle_poll_state_init() later intel_idle: add core C6 optimization for SPR intel_idle: add 'preferred_cstates' module argument intel_idle: add SPR support ACPI: processor idle: Check for architectural support for LPI cpuidle: PSCI: Move the `has_lpi` check to the beginning of the function
2022-03-18regmap: allow a defined reg_base to be added to every addressColin Foster1-0/+3
There's an inconsistency that arises when a register set can be accessed internally via MMIO, or externally via SPI. The VSC7514 chip allows both modes of operation. When internally accessed, the system utilizes __iomem, devm_ioremap_resource, and devm_regmap_init_mmio. For SPI it isn't possible to utilize memory-mapped IO. To properly operate, the resource base must be added to the register before every operation. Signed-off-by: Colin Foster <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Mark Brown <[email protected]>
2022-03-18regmap: add configurable downshift for addressesColin Foster1-0/+3
Add an additional reg_downshift to be applied to register addresses before any register accesses. An example of a device that uses this is a VSC7514 chip, which require each register address to be downshifted by two if the access is performed over a SPI bus. Signed-off-by: Colin Foster <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Mark Brown <[email protected]>
2022-03-18Merge branches 'acpi-soc', 'acpi-video' and 'acpi-apei'Rafael J. Wysocki4-3/+20
Merge ACPI SoC drivers changes, ACPI backlight driver changes and APEI changes for 5.18-rc1: - Make the ACPI driver for Intel SoCs (LPSS) let the SPI driver know the exact type of the controller (Andy Shevchenko). - Force native backlight mode on Clevo NL5xRU and NL5xNU (Werner Sembach). - Fix return value of __setup handlers in the APEI code (Randy Dunlap). - Add Arm Generic Diagnostic Dump and Reset device driver (Ilkka Koskinen). - Limit printable size of BERT table data (Darren Hart). - Fix up HEST and GHES initialization (Shuai Xue). * acpi-soc: ACPI: LPSS: Provide an SSP type to the driver ACPI: LPSS: Constify properties member in struct lpss_device_desc ACPI: platform: Constify properties parameter in acpi_create_platform_device() * acpi-video: ACPI: video: Force backlight native for Clevo NL5xRU and NL5xNU * acpi-apei: ACPI: AGDI: Add driver for Arm Generic Diagnostic Dump and Reset device ACPI/APEI: Limit printable size of BERT table data ACPI: APEI: fix return value of __setup handlers ACPI: APEI: rename ghes_init() with an "acpi_" prefix ACPI: APEI: explicit init of HEST and GHES in apci_init()
2022-03-18Merge tag 'kvmarm-5.18' of ↵Paolo Bonzini4-7/+13
git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD KVM/arm64 updates for 5.18 - Proper emulation of the OSLock feature of the debug architecture - Scalibility improvements for the MMU lock when dirty logging is on - New VMID allocator, which will eventually help with SVA in VMs - Better support for PMUs in heterogenous systems - PSCI 1.1 support, enabling support for SYSTEM_RESET2 - Implement CONFIG_DEBUG_LIST at EL2 - Make CONFIG_ARM64_ERRATUM_2077057 default y - Reduce the overhead of VM exit when no interrupt is pending - Remove traces of 32bit ARM host support from the documentation - Updated vgic selftests - Various cleanups, doc updates and spelling fixes
2022-03-18Merge branches 'acpi-ec', 'acpi-cppc', 'acpi-fan' and 'acpi-battery'Rafael J. Wysocki1-0/+4
Merge ACPI EC driver changes, CPPC-related changes, ACPI fan driver changes and ACPI battery driver changes for 5.18-rc1: - Make wakeup events checks in the ACPI EC driver more straightforward and clean up acpi_ec_submit_event() (Rafael Wysocki). - Make it possible to obtain the CPU capacity with the help of CPPC information (Ionela Voinescu). - Improve fine grained fan control in the ACPI fan driver and document it (Srinivas Pandruvada). - Add device HID and quirk for Microsoft Surface Go 3 to the ACPI battery driver (Maximilian Luz). * acpi-ec: ACPI: EC: Rearrange code in acpi_ec_submit_event() ACPI: EC: Reduce indentation level in acpi_ec_submit_event() ACPI: EC: Do not return result from advance_transaction() * acpi-cppc: arm64, topology: enable use of init_cpu_capacity_cppc() arch_topology: obtain cpu capacity using information from CPPC x86, ACPI: rename init_freq_invariance_cppc() to arch_init_invariance_cppc() * acpi-fan: Documentation/admin-guide/acpi: Add documentation for fine grain control ACPI: fan: Add additional attributes for fine grain control ACPI: fan: Properly handle fine grain control ACPI: fan: Optimize struct acpi_fan_fif ACPI: fan: Separate file for attributes creation ACPI: fan: Fix error reporting to user space * acpi-battery: ACPI: battery: Add device HID and quirk for Microsoft Surface Go 3
2022-03-18Bluetooth: fix incorrect nonblock bitmask in bt_sock_wait_ready()Gavin Li1-1/+1
Callers pass msg->msg_flags as flags, which contains MSG_DONTWAIT instead of O_NONBLOCK. Signed-off-by: Gavin Li <[email protected]> Signed-off-by: Marcel Holtmann <[email protected]>
2022-03-18Bluetooth: hci_sync: Add a new quirk to skip HCI_FLT_CLEAR_ALLIsmael Ferreras Morezuelas1-0/+10
Some controllers have problems with being sent a command to clear all filtering. While the HCI code does not unconditionally send a clear-all anymore at BR/EDR setup (after the state machine refactor), there might be more ways of hitting these codepaths in the future as the kernel develops. Cc: [email protected] Cc: Hans de Goede <[email protected]> Signed-off-by: Ismael Ferreras Morezuelas <[email protected]> Reviewed-by: Hans de Goede <[email protected]> Signed-off-by: Marcel Holtmann <[email protected]>
2022-03-18Merge branches 'acpica', 'acpi-osl', 'acpi-bus' and 'acpi-tables'Rafael J. Wysocki4-0/+12
Merge ACPICA changes, ACPI OS-layer changes, ACPI bus-type and _OSC support changes and ACPI tables parsing changes for 5.18-rc1: - Use uintptr_t and offsetof() in the ACPICA code to avoid compiler warnings regarding NULL pointer arithmetic (Rafael Wysocki). - Fix possible NULL pointer dereference in acpi_ns_walk_namespace() when passed "acpi=off" in the command line (Rafael Wysocki). - Fix and clean up acpi_os_read/write_port() (Rafael Wysocki). - Introduce acpi_bus_for_each_dev() and use it for walking all ACPI device objects in the Type C code (Rafael Wysocki). - Fix the _OSC platform capabilities negotioation and prevent CPPC from being used if the platform firmware indicates that it not supported via _OSC (Rafael Wysocki). - Add AGDI and CEDT to the list of known ACPI table signatures (Ilkka Koskinen, Robert Kiraly). * acpica: ACPICA: Avoid walking the ACPI Namespace if it is not there ACPICA: Use uintptr_t and offsetof() in Linux kernel builds * acpi-osl: ACPI: OSL: Fix and clean up acpi_os_read/write_port() * acpi-bus: ACPI: bus: Avoid using CPPC if not supported by firmware Revert "ACPI: Pass the same capabilities to the _OSC regardless of the query flag" ACPI: bus: Introduce acpi_bus_for_each_dev() * acpi-tables: ACPI: tables: Add AGDI to the list of known table signatures ACPI: tables: Add CEDT signature to the list of known tables
2022-03-18Merge tag 'wireless-next-2022-03-18' of ↵David S. Miller2-2/+14
git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next Kalle Valo says: ==================== wireless-next patches for v5.18 Third set of patches for v5.18. Smaller set this time, support for mt7921u and some work on MBSSID support. Also a workaround for rfkill userspace event. Major changes: mac80211 * MBSSID beacon handling in AP mode rfkill * make new event layout opt-in to workaround buggy user space rtlwifi * support On Networks N150 device id mt76 * mt7915: MBSSID and 6 GHz band support * new driver mt7921u ==================== Signed-off-by: David S. Miller <[email protected]>
2022-03-18ptrace: Return the signal to continue with from ptrace_stopEric W. Biederman1-6/+6
The signal a task should continue with after a ptrace stop is inconsistently read, cleared, and sent. Solve this by reading and clearing the signal to be sent in ptrace_stop. In an ideal world everything except ptrace_signal would share a common implementation of continuing with the signal, so ptracers could count on the signal they ask to continue with actually being delivered. For now retain bug compatibility and just return with the signal number the ptracer requested the code continue with. Link: https://lkml.kernel.org/r/[email protected] Reviewed-by: Kees Cook <[email protected]> Signed-off-by: "Eric W. Biederman" <[email protected]>
2022-03-18ptrace: Move setting/clearing ptrace_message into ptrace_stopEric W. Biederman2-7/+4
Today ptrace_message is easy to overlook as it not a core part of ptrace_stop. It has been overlooked so much that there are places that set ptrace_message and don't clear it, and places that never set it. So if you get an unlucky sequence of events the ptracer may be able to read a ptrace_message that does not apply to the current ptrace stop. Move setting of ptrace_message into ptrace_stop so that it always gets set before the stop, and always gets cleared after the stop. This prevents non-sense from being reported to userspace and makes ptrace_message more visible in the ptrace helper functions so that kernel developers can see it. Link: https://lkml.kernel.org/r/[email protected] Acked-by: Oleg Nesterov <[email protected]> Reviewed-by: Kees Cook <[email protected]> Signed-off-by: "Eric W. Biederman" <[email protected]>
2022-03-18misc: fastrpc: Add support to secure memory mapVamsi Krishna Gattupalli1-1/+4
This patch adds support to secure memory allocations for DSP. It repurposes the reserved field in struct fastrpc_invoke_args to add attributes to invoke request, for example to setup a secure memory map for dsp. Secure memory is assigned to DSP Virtual Machine IDs using Qualcomm SCM calls. Signed-off-by: Vamsi Krishna Gattupalli <[email protected]> Signed-off-by: Srinivas Kandagatla <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2022-03-18misc: fastrpc: check before loading process to the DSPJeya R1-0/+17
Reject session if DSP domain is secure, device node is non-secure and signed PD is requested. Secure device node can access DSP without any restriction. Unsigned PD offload is only allowed for the DSP domain that can support unsigned offloading. Signed-off-by: Jeya R <[email protected]> Signed-off-by: Srinivas Kandagatla <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2022-03-18misc: fastrpc: Add support to get DSP capabilitiesJeya R1-0/+8
Add support to get DSP capabilities. The capability information is cached on driver. Signed-off-by: Jeya R <[email protected]> Signed-off-by: Srinivas Kandagatla <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2022-03-18misc: fastrpc: add support for FASTRPC_IOCTL_MEM_MAP/UNMAPJeya R1-0/+51
Add support for IOCTL requests to map and unmap on DSP based on map flags. Signed-off-by: Jeya R <[email protected]> Signed-off-by: Srinivas Kandagatla <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2022-03-18counter: add new COUNTER_EVENT_CHANGE_OF_STATEOleksij Rempel1-0/+2
Add new counter event to notify user space about every new counter pulse. Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Oleksij Rempel <[email protected]> Signed-off-by: William Breathitt Gray <[email protected]> Link: https://lore.kernel.org/r/486a5de67414470449efb84d06a2f2214f4bb31d.1647373009.git.vilhelm.gray@gmail.com Signed-off-by: Greg Kroah-Hartman <[email protected]>
2022-03-18serial: 8250: fix XOFF/XON sending when DMA is usedIlpo Järvinen1-0/+2
When 8250 UART is using DMA, x_char (XON/XOFF) is never sent to the wire. After this change, x_char is injected correctly. Create uart_xchar_out() helper for sending the x_char out and accounting related to it. It seems that almost every driver does these same steps with x_char. Except for 8250, however, almost all currently lack .serial_out so they cannot immediately take advantage of this new helper. The downside of this patch is that it might reintroduce the problems some devices faced with mixed DMA/non-DMA transfer which caused revert f967fc8f165f (Revert "serial: 8250_dma: don't bother DMA with small transfers"). However, the impact should be limited to cases with XON/XOFF (that didn't work with DMA capable devices to begin with so this problem is not very likely to cause a major issue, if any at all). Fixes: 9ee4b83e51f74 ("serial: 8250: Add support for dmaengine") Reported-by: Gilles Buloz <[email protected]> Tested-by: Gilles Buloz <[email protected]> Reviewed-by: Andy Shevchenko <[email protected]> Signed-off-by: Ilpo Järvinen <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2022-03-18Merge tag 'coresight-next-v5.18-v2' of ↵Greg Kroah-Hartman1-5/+0
git://git.kernel.org/pub/scm/linux/kernel/git/coresight/linux into char-misc-next Suzuki writes: coresight: changes for v5.18 The coresight update for v5.18 includes - TRBE erratum workarounds for Arm Cortex-A510 - Fixes for leaking root namespace PIDs into non-root namespace trace sessions - Miscellaneous fixes and cleanups Updated tag to reflect missing committer s-o-b tags. Signed-off-by: Suzuki K Poulose <[email protected]> * tag 'coresight-next-v5.18-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/coresight/linux: coresight: Drop unused 'none' enum value for each component coresight: etm3x: Don't trace PID for non-root PID namespace coresight: etm4x: Don't trace PID for non-root PID namespace coresight: etm4x: Don't use virtual contextID for non-root PID namespace coresight: etm4x: Add lock for reading virtual context ID comparator coresight: trbe: Move check for kernel page table isolation from EL0 to probe coresight: no-op refactor to make INSTP0 check more idiomatic hwtracing: coresight: Replace acpi_bus_get_device() coresight: syscfg: Fix memleak on registration failure in cscfg_create_device coresight: Fix TRCCONFIGR.QE sysfs interface coresight: trbe: Work around the trace data corruption coresight: trbe: Work around the invalid prohibited states coresight: trbe: Work around the ignored system register writes
2022-03-18Merge tag 'iio-for-5.18a' of ↵Greg Kroah-Hartman6-44/+82
https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into char-misc-next Jonathan writes: First set of new device support, fixes, cleanups and features for IIO in 5.18 This cycle we had quite a few series that applied similar changes to lots of drivers. To keep this description manageable I have called those out in their own section rather than per driver. Particularly pleased to see the long running AFE precision series going in this cycle. Series includes some late breaking fixes. New device support * adi,ada4250 amplifier - New driver and dt bindings for this programmable gain amplifier. * adi,admv1014 microwave down-converter - New driver, dt bindings and some device specific ABI that may be generalized as more drivers for devices similar to this are added. * adi,admv4420 K Band down-converter. - New driver and dt bindings. * adi,adxl367 accelerometer driver. - New driver, dt-bindings + some new IIO ABI definitions to support reference magnitude events where an estimate of the acceleration due to gravity has been removed. - A few fixes as follow up patches. * adi,ltc2688 DAC with toggle and dither modes. - New driver and bindings. Includes some new driver specific (for now) ABI for handling toggle mode and the addition of a dither waveform to the DAC output. * AFE (analog front end) add support for additional types of analog device in front of an ADC. - RTD temperature sensors with dt bindings. - Temperature transducers wit dt bindings. - Related cleanup and features listed in other sections below. * maxim,ds3502 potentiometer. - Add support to ds1803 driver which required significant rework. * mediatek,mt2701-auxadc driver - Add mediatek,mt8186-auxadc - id table and chip specific info only. * semtech,sx9324, semtech,ax9360 - Substantial refactoring of sx9310 to extract core logic for reuse into a separate module - New driver using this supporting sx9324 proximity sensors. - New driver using this supporting sx9360 proximity sensors. * silan,sc7a20 - Compatible with the st,lis2dh (or nearly anyway) so add ID and chip specific info to enable support. Also silan vendor ID added for dt-bindings. Staging graduation * adi,ad7280a monitoring ADC for stacked lithium-ion batteries in electric cars and similar. - Substantial rework of driver required to bring inline with current IIO best practice. An unusual device in IIO so some interesting features we may see more of in future. Multiple driver/core cleanup - Use sysfs_emit() in simple locations where there is no path to change to various core created attributes. - Trivial white space fixes around inconsistency between space after { and before } in id tables. - Introduce new handling for fractional types to avoid repeated similar implementations. Use this in 3 drivers. Note this is also targeted at future use in the AFE driver and was motivated by discussions around the precision related work on that driver. - of related header cleanups - drop of*.h and add mod_devicetable.h as appropriate. - Move a number of symbol exports into IIO_* namespaces. Two categories, 1) Library used by multiple drivers e.g. st_sensors 2) Core driver module exporting functions used by bus specific modules. A few related cleanups in this set. - Switch from CONFIG_PM_* guards to new DEFINE_SIMPLE_DEV_PM_OPS() and similar to simplify drivers and take advantage of these new macros allowing the compiler to do the job or removing unused code without the need for __maybe_unused markings. Conversion of other drivers to these new macros ongoing. Features * adi,adf4350 - Switch from of specific to generic device properties enabling use with other firmware types. * adi,adx345 - Switch from of specific to generic device properties. - Add ACPI ID ADS0345 - Related driver cleanup. * adi,hmc425a - Switch from of specific to generic device properties. * afe analog rescaler driver - Wider range of types supported for scale. - Support offset. - Kunit tests. * atlas,ezo-sensor - Convert from of to device properties. * fsl,mma8452 - Support mount matrix. * infineon,dps310: - Add ACPI ID IFX3100. * invensense,mpu6050 - Convert to generic device properties. * maxim,ds1803 - Add out_raw_available before supporting more devices. - Convert from of specific to device properties. * samsung,ssp_sensors - Convert from of specific to device properties. * st,stm32-timer trigger - Convert from of specific to device properties. * ti,hdc101x - Add ACPI ID TXNW1010. * ti,tsc2046: - Add read_raw support to enable use of iio_hwmon and similar. Fixes / cleanup. * mailmap - Update for Cai Huoqing * MAINTAINERS - Fix Analog Devices related links. - Add entry for ADRF6780 - Add entry for ADMV1013 - Add entry for AD7293 - Add entry for ADMV8818 - Update files listed for adis-lib * iio core: - Fix wrong comment about current_mode being something a driver should ever access. - Use struct_size() rather than open coding in industrialio-hw-consumer * adi,axl355 - Use units.h definitions instead of local versions. * adi,adis-lib - Simplify *updated_bits() macro - Whitespace cleanup. * afe - Note many of these fixes only apply to particular configurations so the problems have probably not been seen in the wild, but will be visible with new usecases enabled this cycle. - Fix application of consumer scale for IIO_VAL_INT. - Apply a scale of 1 when no scale is provided. - Make best effort to establish a valid offset value for fractional cases. - Use s64 for scale calculations where parameters may be signed. - Tidy up include order. - Improve accuracy for small fractional sales - Reduce risk of integer overflow. * ams,as3935 - Use devm_delayed_work_autocancel() to replace open coded equivalent. * aspeed,adc - Fix wrong use of divider flag. * atmel,sama5d2-adc - Relax atmel,trigger-edge-type to optional. - Drop Ludovic Desroches from listed maintainers of the dt-binding inline with previous MAINTAINERS entry update. * fsl,mma8452 - Fix probing when i2c_device_id used. - dev_get_drvdata() on the iio_dev->dev, no longer returns iio_dev. Use dev_to_iio_dev() instead. Note the original path in here worked more by luck than design. * invensense,mpu6050 - Drop ACPI_PTR() protection to avoid an unused warning. - Use fact ACPI_COMPANION() returns null when ACPI_HANDLE() does to simplify handling. * motorola,cpcap-adc - Drop unused assignment. * qcom,spmi-adc - Fix wrong example of 'reg' in binding document. * renesas,rzg2l-adc - Trivial typo fix. * semtech,sx9360 - Fix wrong register handling for event generation. * st_sensors - Allow manual disabling of I2C or SPI module if not needed for a particular board. Default is still to enable the bus specific module if appropriate bus is supported. * st,lsm6dsx - dev_get_drvdata() on the iio_dev->dev, no longer returns iio_dev. Use dev_to_iio_dev() instead. * ti,palmas-gpadc - Split the interrupt fields in the dt-binding example * ti,tsc2046 - Rework state machine to improve readability after recent debugging of an issue fixed elsewhere. - Add a sanity check to avoid very large memory allocations if a crazy delay is specified. * ti,twl6030 - Add error handling if devm_request_threaded_irq() fails. * xilinx,ams - Use devm_delayed_work_autocancel() instead of open coding equivalent. - Fix missing required clock entry in dt-binding. - Fix miss counting of channels resulting in ps channels not being enabled. - Fix incorrect values written to sequencer registers. - Fix sequence for single channel reading. * tag 'iio-for-5.18a' of https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio: (245 commits) iio: adc: xilinx-ams: Fix single channel switching sequence iio: adc: xilinx-ams: Fixed wrong sequencer register settings iio: adc: xilinx-ams: Fixed missing PS channels dt-bindings: iio: adc: zynqmp_ams: Add clock entry iio: accel: mma8452: use the correct logic to get mma8452_data iio: adc: aspeed: Add divider flag to fix incorrect voltage reading. iio: imu: st_lsm6dsx: use dev_to_iio_dev() to get iio_dev struct dt-bindings: iio: Add ltc2688 documentation iio: ABI: add ABI file for the LTC2688 DAC iio: dac: add support for ltc2688 dt-bindings: iio: afe: add bindings for temperature transducers dt-bindings: iio: afe: add bindings for temperature-sense-rtd iio: afe: rescale: add temperature transducers iio: afe: rescale: add RTD temperature sensor support iio: test: add basic tests for the iio-rescale driver iio: afe: rescale: reduce risk of integer overflow iio: afe: rescale: fix accuracy for small fractional scales iio: afe: rescale: add offset support iio: afe: rescale: add INT_PLUS_{MICRO,NANO} support iio: afe: rescale: expose scale processing function ...
2022-03-18rfkill: make new event layout opt-inJohannes Berg1-2/+12
Again new complaints surfaced that we had broken the ABI here, although previously all the userspace tools had agreed that it was their mistake and fixed it. Yet now there are cases (e.g. RHEL) that want to run old userspace with newer kernels, and thus are broken. Since this is a bit of a whack-a-mole thing, change the whole extensibility scheme of rfkill to no longer just rely on the message lengths, but instead require userspace to opt in via a new ioctl to a given maximum event size that it is willing to understand. By default, set that to RFKILL_EVENT_SIZE_V1 (8), so that the behaviour for userspace not calling the ioctl will look as if it's just running on an older kernel. Fixes: 14486c82612a ("rfkill: add a reason to the HW rfkill state") Cc: [email protected] # 5.11+ Signed-off-by: Johannes Berg <[email protected]> Signed-off-by: Kalle Valo <[email protected]> Link: https://lore.kernel.org/r/20220316212749.16491491b270.Ifcb1950998330a596f29a2a162e00b7546a1d6d0@changeid
2022-03-18Merge git://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nfDavid S. Miller1-0/+18
Pablo Neira Ayuso says: ==================== Netfilter fixes for net The following patchset contains Netfilter fixes for net: 1) Fix PPPoE and QinQ with flowtable inet family. 2) Missing register validation in nf_tables. 3) Initialize registers to avoid stack memleak to userspace. ==================== Signed-off-by: David S. Miller <[email protected]>
2022-03-18Merge tag 'mlx5-updates-2022-03-17' of ↵David S. Miller1-4/+0
git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux Saeed Mahameed says: ==================== mlx5-updates-2022-03-17 1) From Maxim Mikityanskiy, Datapath improvements in preparation for XDP multi buffer This series contains general improvements for the datapath that are useful for the upcoming XDP multi buffer support: a. Non-linear legacy RQ: validate MTU for robustness, build the linear part of SKB over the first hardware fragment (instead of copying the packet headers), adjust headroom calculations to allow enabling headroom in the non-linear mode (useful for XDP multi buffer). b. XDP: do the XDP program test before function call, optimize parameters of mlx5e_xdp_handle. 2) From Rongwei Liu, DR, reduce steering memory usage Currently, mlx5 driver uses mlx5_htbl/chunk/ste to organize steering logic. However there is a little memory waste. This update targets to reduce steering memory footprint by: a. Adjust struct member layout. b. Remove duplicated indicator by using simple functions call. With 500k TX rules(3 ste) plus 500k RX rules(6 stes), these patches can save around 17% memory. 3) Three cleanup commits at the end of this series. =================== Signed-off-by: David S. Miller <[email protected]>
2022-03-18netfs: Keep track of the actual remote file sizeDavid Howells1-0/+16
Provide a place in which to keep track of the actual remote file size in the netfs context. This is needed because inode->i_size will be updated as we buffer writes in the pagecache, but the server file size won't get updated until we flush them back. Signed-off-by: David Howells <[email protected]> Reviewed-by: Jeff Layton <[email protected]> cc: [email protected] Link: https://lore.kernel.org/r/164623013727.3564931.17659955636985232717.stgit@warthog.procyon.org.uk/ # v1 Link: https://lore.kernel.org/r/164678219305.1200972.6459431995188365134.stgit@warthog.procyon.org.uk/ # v2 Link: https://lore.kernel.org/r/164692921865.2099075.5310757978508056134.stgit@warthog.procyon.org.uk/ # v3
2022-03-18netfs: Add a function to consolidate beginning a readDavid Howells1-2/+3
Add a function to do the steps needed to begin a read request, allowing this code to be removed from several other functions and consolidated. Changes ======= ver #2) - Move before the unstaticking patch so that some functions can be left static. - Set uninitialised return code in netfs_begin_read()[1][2]. - Fixed a refleak caused by non-removal of a get from netfs_write_begin() when the request submission code got moved to netfs_begin_read(). - Use INIT_WORK() to (re-)init the request work_struct[3]. Signed-off-by: David Howells <[email protected]> Reviewed-by: Jeff Layton <[email protected]> cc: [email protected] Link: https://lore.kernel.org/r/[email protected]/ [1] Link: https://lore.kernel.org/r/[email protected]/ [2] Link: https://lore.kernel.org/r/[email protected]/ [3] Link: https://lore.kernel.org/r/164623004355.3564931.7275693529042495641.stgit@warthog.procyon.org.uk/ # v1 Link: https://lore.kernel.org/r/164678214287.1200972.16734134007649832160.stgit@warthog.procyon.org.uk/ # v2 Link: https://lore.kernel.org/r/164692911113.2099075.1060868473229451371.stgit@warthog.procyon.org.uk/ # v3
2022-03-18netfs: Add a netfs inode contextDavid Howells1-11/+70
Add a netfs_i_context struct that should be included in the network filesystem's own inode struct wrapper, directly after the VFS's inode struct, e.g.: struct my_inode { struct { /* These must be contiguous */ struct inode vfs_inode; struct netfs_i_context netfs_ctx; }; }; The netfs_i_context struct so far contains a single field for the network filesystem to use - the cache cookie: struct netfs_i_context { ... struct fscache_cookie *cache; }; Three functions are provided to help with this: (1) void netfs_i_context_init(struct inode *inode, const struct netfs_request_ops *ops); Initialise the netfs context and set the operations. (2) struct netfs_i_context *netfs_i_context(struct inode *inode); Find the netfs context from the VFS inode. (3) struct inode *netfs_inode(struct netfs_i_context *ctx); Find the VFS inode from the netfs context. Changes ======= ver #4) - Fix netfs_is_cache_enabled() to check cookie->cache_priv to see if a cache is present[3]. - Fix netfs_skip_folio_read() to zero out all of the page, not just some of it[3]. ver #3) - Split out the bit to move ceph cap-getting on readahead into ceph_init_request()[1]. - Stick in a comment to the netfs inode structs indicating the contiguity requirements[2]. ver #2) - Adjust documentation to match. - Use "#if IS_ENABLED()" in netfs_i_cookie(), not "#ifdef". - Move the cap check from ceph_readahead() to ceph_init_request() to be called from netfslib. - Remove ceph_readahead() and use netfs_readahead() directly instead. Signed-off-by: David Howells <[email protected]> Acked-by: Jeff Layton <[email protected]> cc: [email protected] Link: https://lore.kernel.org/r/[email protected]/ [1] Link: https://lore.kernel.org/r/[email protected]/ [2] Link: https://lore.kernel.org/r/[email protected]/ [3] Link: https://lore.kernel.org/r/164622984545.3564931.15691742939278418580.stgit@warthog.procyon.org.uk/ # v1 Link: https://lore.kernel.org/r/164678213320.1200972.16807551936267647470.stgit@warthog.procyon.org.uk/ # v2 Link: https://lore.kernel.org/r/164692909854.2099075.9535537286264248057.stgit@warthog.procyon.org.uk/ # v3 Link: https://lore.kernel.org/r/[email protected]/ # v4
2022-03-18netfs: Change ->init_request() to return an error codeDavid Howells1-1/+1
Change the request initialisation function to return an error code so that the network filesystem can return a failure (ENOMEM, for example). This will also allow ceph to abort a ->readahead() op if the server refuses to give it a cap allowing local caching from within the netfslib framework (errors aren't passed back through ->readahead(), so returning, say, -ENOBUFS will cause the op to be aborted). Signed-off-by: David Howells <[email protected]> Reviewed-by: Jeff Layton <[email protected]> cc: [email protected] Link: https://lore.kernel.org/r/164678212401.1200972.16537041523832944934.stgit@warthog.procyon.org.uk/ # v2 Link: https://lore.kernel.org/r/164692905398.2099075.5238033621684646524.stgit@warthog.procyon.org.uk/ # v3
2022-03-18netfs: Refactor arguments for netfs_alloc_read_requestDavid Howells2-1/+17
Pass start and len to the rreq allocator. This should ensure that the fields are set so that ->init_request() can use them. Also add a parameter to indicates the origin of the request. Ceph can use this to tell whether to get caps. Changes ======= ver #3) - Change the author to me as Jeff feels that most of the patch is my changes now. ver #2) - Show the request origin in the netfs_rreq tracepoint. Signed-off-by: Jeff Layton <[email protected]> Co-developed-by: David Howells <[email protected]> Signed-off-by: David Howells <[email protected]> cc: [email protected] Link: https://lore.kernel.org/r/164622989020.3564931.17517006047854958747.stgit@warthog.procyon.org.uk/ # v1 Link: https://lore.kernel.org/r/164678208569.1200972.12153682697842916557.stgit@warthog.procyon.org.uk/ # v2 Link: https://lore.kernel.org/r/164692904155.2099075.14717645623034355995.stgit@warthog.procyon.org.uk/ # v3
2022-03-18netfs: Adjust the netfs_failure tracepoint to indicate non-subreq linesDavid Howells1-4/+4
Adjust the netfs_failure tracepoint to indicate a subrequest number of -1 when it's a full-request failure unrelated to any particular subrequest, such as a failure to encrypt its data buffer. Signed-off-by: David Howells <[email protected]> Reviewed-by: Jeff Layton <[email protected]> cc: [email protected] Link: https://lore.kernel.org/r/164623001948.3564931.2353852999649380059.stgit@warthog.procyon.org.uk/ # v1 Link: https://lore.kernel.org/r/164678204587.1200972.14893513018190383961.stgit@warthog.procyon.org.uk/ # v2 Link: https://lore.kernel.org/r/164692903233.2099075.15414355147237641274.stgit@warthog.procyon.org.uk/ # v3
2022-03-18netfs: Trace refcounting on the netfs_io_subrequest structDavid Howells2-1/+47
Add refcount tracing for the netfs_io_subrequest structure. Changes ======= ver #3) - Switch 'W=' to 'R=' in the traceline to match other request debug IDs. Signed-off-by: David Howells <[email protected]> Reviewed-by: Jeff Layton <[email protected]> cc: [email protected] Link: https://lore.kernel.org/r/164622998584.3564931.5052255990645723639.stgit@warthog.procyon.org.uk/ # v1 Link: https://lore.kernel.org/r/164678202603.1200972.14726007419792315578.stgit@warthog.procyon.org.uk/ # v2 Link: https://lore.kernel.org/r/164692901860.2099075.4845820886851239935.stgit@warthog.procyon.org.uk/ # v3
2022-03-18netfs: Trace refcounting on the netfs_io_request structDavid Howells2-1/+36
Add refcount tracing for the netfs_io_request structure. Changes ======= ver #3) - Switch 'W=' to 'R=' in the traceline to match other request debug IDs. Signed-off-by: David Howells <[email protected]> Reviewed-by: Jeff Layton <[email protected]> cc: [email protected] Link: https://lore.kernel.org/r/164622997668.3564931.14456171619219324968.stgit@warthog.procyon.org.uk/ # v1 Link: https://lore.kernel.org/r/164678200943.1200972.7241495532327787765.stgit@warthog.procyon.org.uk/ # v2 Link: https://lore.kernel.org/r/164692900920.2099075.11847712419940675791.stgit@warthog.procyon.org.uk/ # v3
2022-03-18netfs: Adjust the netfs_rreq tracepoint slightlyDavid Howells1-9/+9
Adjust the netfs_rreq tracepoint to include the origin of the request and to increase the size of the "what trace" output strings by a character so that "ENCRYPT" and "DECRYPT" will fit without abbreviation. Signed-off-by: David Howells <[email protected]> Reviewed-by: Jeff Layton <[email protected]> cc: [email protected] Link: https://lore.kernel.org/r/164622996715.3564931.4252319907990358129.stgit@warthog.procyon.org.uk/ # v1 Link: https://lore.kernel.org/r/164678199468.1200972.17275585970238114726.stgit@warthog.procyon.org.uk/ # v2 Link: https://lore.kernel.org/r/164692898684.2099075.12153225958137716567.stgit@warthog.procyon.org.uk/ # v3
2022-03-18netfs: Finish off rename of netfs_read_request to netfs_io_requestDavid Howells1-11/+11
Adjust helper function names and comments after mass rename of struct netfs_read_*request to struct netfs_io_*request. Changes ======= ver #2) - Make the changes in the docs also. Signed-off-by: David Howells <[email protected]> Reviewed-by: Jeff Layton <[email protected]> cc: [email protected] Link: https://lore.kernel.org/r/164622992433.3564931.6684311087845150271.stgit@warthog.procyon.org.uk/ # v1 Link: https://lore.kernel.org/r/164678196111.1200972.5001114956865989528.stgit@warthog.procyon.org.uk/ # v2 Link: https://lore.kernel.org/r/164692892567.2099075.13895804222087028813.stgit@warthog.procyon.org.uk/ # v3
2022-03-18netfs: Rename netfs_read_*request to netfs_io_*requestDavid Howells3-31/+31
Rename netfs_read_*request to netfs_io_*request so that the same structures can be used for the write helpers too. perl -p -i -e 's/netfs_read_(request|subrequest)/netfs_io_$1/g' \ `git grep -l 'netfs_read_\(sub\|\)request'` perl -p -i -e 's/nr_rd_ops/nr_outstanding/g' \ `git grep -l nr_rd_ops` perl -p -i -e 's/nr_wr_ops/nr_copy_ops/g' \ `git grep -l nr_wr_ops` perl -p -i -e 's/netfs_read_source/netfs_io_source/g' \ `git grep -l 'netfs_read_source'` perl -p -i -e 's/netfs_io_request_ops/netfs_request_ops/g' \ `git grep -l 'netfs_io_request_ops'` perl -p -i -e 's/init_rreq/init_request/g' \ `git grep -l 'init_rreq'` Signed-off-by: David Howells <[email protected]> Reviewed-by: Jeff Layton <[email protected]> cc: [email protected] Link: https://lore.kernel.org/r/164622988070.3564931.7089670190434315183.stgit@warthog.procyon.org.uk/ # v1 Link: https://lore.kernel.org/r/164678195157.1200972.366609966927368090.stgit@warthog.procyon.org.uk/ # v2 Link: https://lore.kernel.org/r/164692891535.2099075.18435198075367420588.stgit@warthog.procyon.org.uk/ # v3
2022-03-18netfs: Generate enums from trace symbol mapping listsDavid Howells1-43/+16
netfs has a number of lists of symbols for use in tracing, listed in an enum and then listed again in a symbol->string mapping for use with __print_symbolic(). This is, however, redundant. Instead, use the symbol->string mapping list to also generate the enum where the enum is in the same file. Changes ======= ver #3) - #undef EM and E_ at the end of the trace file[1]. Signed-off-by: David Howells <[email protected]> Acked-by: Jeff Layton <[email protected]> cc: [email protected] Link: https://lore.kernel.org/r/[email protected]/ [1] Link: https://lore.kernel.org/r/164622980839.3564931.5673300162465266909.stgit@warthog.procyon.org.uk/ # v1 Link: https://lore.kernel.org/r/164678192454.1200972.4428834328108580460.stgit@warthog.procyon.org.uk/ # v2 Link: https://lore.kernel.org/r/CALF+zOkB38_MB5QwNUtqTU4WjMaLUJ5+Piwsn3pMxkO3d4J7Kg@mail.gmail.com/ # v2 Link: https://lore.kernel.org/r/164692890614.2099075.12960653141802151575.stgit@warthog.procyon.org.uk/ # v3
2022-03-18fscache: export fscache_end_operation()Jeffle Xu1-0/+14
Export fscache_end_operation() to avoid code duplication. Besides, considering the paired fscache_begin_read_operation() is already exported, it shall make sense to also export fscache_end_operation(). Signed-off-by: Jeffle Xu <[email protected]> Signed-off-by: David Howells <[email protected]> Reviewed-by: Jeff Layton <[email protected]> cc: [email protected] Link: https://lore.kernel.org/r/[email protected]/ # Jeffle's v4 Link: https://lore.kernel.org/r/164622971432.3564931.12184135678781328146.stgit@warthog.procyon.org.uk/ # v1 Link: https://lore.kernel.org/r/164678190346.1200972.7453733431978569479.stgit@warthog.procyon.org.uk/ # v2 Link: https://lore.kernel.org/r/164692888334.2099075.5166283293894267365.stgit@warthog.procyon.org.uk/ # v3 Link: https://lore.kernel.org/r/[email protected]/ # v5
2022-03-18kernfs: remove unneeded #if 0 guardGreg Kroah-Hartman1-20/+0
Commit f2eb478f2f32 ("kernfs: move struct kernfs_root out of the public view.") moved kernfs_root out of kernfs.h, but my debugging code of a #if 0 was left in accidentally. Fix that up by removing the guards. Fixes: f2eb478f2f32 ("kernfs: move struct kernfs_root out of the public view.") Cc: Tejun Heo <[email protected]> Reported-by: Al Viro <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2022-03-18xfrm: rework default policy structureNicolas Dichtel2-35/+19
This is a follow up of commit f8d858e607b2 ("xfrm: make user policy API complete"). The goal is to align userland API to the internal structures. Signed-off-by: Nicolas Dichtel <[email protected]> Reviewed-by: Antony Antony <[email protected]> Signed-off-by: Steffen Klassert <[email protected]>
2022-03-17bpf: Add cookie support to programs attached with kprobe multi linkJiri Olsa1-0/+1
Adding support to call bpf_get_attach_cookie helper from kprobe programs attached with kprobe multi link. The cookie is provided by array of u64 values, where each value is paired with provided function address or symbol with the same array index. When cookie array is provided it's sorted together with addresses (check bpf_kprobe_multi_cookie_swap). This way we can find cookie based on the address in bpf_get_attach_cookie helper. Suggested-by: Andrii Nakryiko <[email protected]> Signed-off-by: Jiri Olsa <[email protected]> Signed-off-by: Alexei Starovoitov <[email protected]> Link: https://lore.kernel.org/bpf/[email protected]
2022-03-17bpf: Add multi kprobe linkJiri Olsa3-0/+21
Adding new link type BPF_LINK_TYPE_KPROBE_MULTI that attaches kprobe program through fprobe API. The fprobe API allows to attach probe on multiple functions at once very fast, because it works on top of ftrace. On the other hand this limits the probe point to the function entry or return. The kprobe program gets the same pt_regs input ctx as when it's attached through the perf API. Adding new attach type BPF_TRACE_KPROBE_MULTI that allows attachment kprobe to multiple function with new link. User provides array of addresses or symbols with count to attach the kprobe program to. The new link_create uapi interface looks like: struct { __u32 flags; __u32 cnt; __aligned_u64 syms; __aligned_u64 addrs; } kprobe_multi; The flags field allows single BPF_TRACE_KPROBE_MULTI bit to create return multi kprobe. Signed-off-by: Masami Hiramatsu <[email protected]> Signed-off-by: Jiri Olsa <[email protected]> Signed-off-by: Alexei Starovoitov <[email protected]> Acked-by: Andrii Nakryiko <[email protected]> Link: https://lore.kernel.org/bpf/[email protected]
2022-03-17lib/sort: Add priv pointer to swap functionJiri Olsa2-1/+2
Adding support to have priv pointer in swap callback function. Following the initial change on cmp callback functions [1] and adding SWAP_WRAPPER macro to identify sort call of sort_r. Signed-off-by: Jiri Olsa <[email protected]> Signed-off-by: Alexei Starovoitov <[email protected]> Reviewed-by: Masami Hiramatsu <[email protected]> Link: https://lore.kernel.org/bpf/[email protected] [1] 4333fb96ca10 ("media: lib/sort.c: implement sort() variant taking context argument")
2022-03-17fprobe: Introduce FPROBE_FL_KPROBE_SHARED flag for fprobeMasami Hiramatsu2-0/+15
Introduce FPROBE_FL_KPROBE_SHARED flag for sharing fprobe callback with kprobes safely from the viewpoint of recursion. Since the recursion safety of the fprobe (and ftrace) is a bit different from the kprobes, this may cause an issue if user wants to run the same code from the fprobe and the kprobes. The kprobes has per-cpu 'current_kprobe' variable which protects the kprobe handler from recursion in any case. On the other hand, the fprobe uses only ftrace_test_recursion_trylock(), which will allow interrupt context calls another (or same) fprobe during the fprobe user handler is running. This is not a matter in cases if the common callback shared among the kprobes and the fprobe has its own recursion detection, or it can handle the recursion in the different contexts (normal/interrupt/NMI.) But if it relies on the 'current_kprobe' recursion lock, it has to check kprobe_running() and use kprobe_busy_*() APIs. Fprobe has FPROBE_FL_KPROBE_SHARED flag to do this. If your common callback code will be shared with kprobes, please set FPROBE_FL_KPROBE_SHARED *before* registering the fprobe, like; fprobe.flags = FPROBE_FL_KPROBE_SHARED; register_fprobe(&fprobe, "func*", NULL); This will protect your common callback from the nested call. Signed-off-by: Masami Hiramatsu <[email protected]> Signed-off-by: Steven Rostedt (Google) <[email protected]> Tested-by: Steven Rostedt (Google) <[email protected]> Signed-off-by: Alexei Starovoitov <[email protected]> Link: https://lore.kernel.org/bpf/164735293127.1084943.15687374237275817599.stgit@devnote2
2022-03-17fprobe: Add exit_handler supportMasami Hiramatsu1-0/+6
Add exit_handler to fprobe. fprobe + rethook allows us to hook the kernel function return. The rethook will be enabled only if the fprobe::exit_handler is set. Signed-off-by: Masami Hiramatsu <[email protected]> Signed-off-by: Steven Rostedt (Google) <[email protected]> Tested-by: Steven Rostedt (Google) <[email protected]> Signed-off-by: Alexei Starovoitov <[email protected]> Link: https://lore.kernel.org/bpf/164735290790.1084943.10601965782208052202.stgit@devnote2
2022-03-17rethook: Add a generic return hookMasami Hiramatsu2-0/+103
Add a return hook framework which hooks the function return. Most of the logic came from the kretprobe, but this is independent from kretprobe. Note that this is expected to be used with other function entry hooking feature, like ftrace, fprobe, adn kprobes. Eventually this will replace the kretprobe (e.g. kprobe + rethook = kretprobe), but at this moment, this is just an additional hook. Signed-off-by: Masami Hiramatsu <[email protected]> Signed-off-by: Steven Rostedt (Google) <[email protected]> Tested-by: Steven Rostedt (Google) <[email protected]> Signed-off-by: Alexei Starovoitov <[email protected]> Link: https://lore.kernel.org/bpf/164735285066.1084943.9259661137330166643.stgit@devnote2
2022-03-17fprobe: Add ftrace based probe APIsMasami Hiramatsu1-0/+87
The fprobe is a wrapper API for ftrace function tracer. Unlike kprobes, this probes only supports the function entry, but this can probe multiple functions by one fprobe. The usage is similar, user will set their callback to fprobe::entry_handler and call register_fprobe*() with probed functions. There are 3 registration interfaces, - register_fprobe() takes filtering patterns of the functin names. - register_fprobe_ips() takes an array of ftrace-location addresses. - register_fprobe_syms() takes an array of function names. The registered fprobes can be unregistered with unregister_fprobe(). e.g. struct fprobe fp = { .entry_handler = user_handler }; const char *targets[] = { "func1", "func2", "func3"}; ... ret = register_fprobe_syms(&fp, targets, ARRAY_SIZE(targets)); ... unregister_fprobe(&fp); Signed-off-by: Masami Hiramatsu <[email protected]> Signed-off-by: Steven Rostedt (Google) <[email protected]> Tested-by: Steven Rostedt (Google) <[email protected]> Signed-off-by: Alexei Starovoitov <[email protected]> Link: https://lore.kernel.org/bpf/164735283857.1084943.1154436951479395551.stgit@devnote2
2022-03-17ftrace: Add ftrace_set_filter_ips functionJiri Olsa1-0/+3
Adding ftrace_set_filter_ips function to be able to set filter on multiple ip addresses at once. With the kprobe multi attach interface we have cases where we need to initialize ftrace_ops object with thousands of functions, so having single function diving into ftrace_hash_move_and_update_ops with ftrace_lock is faster. The functions ips are passed as unsigned long array with count. Signed-off-by: Jiri Olsa <[email protected]> Signed-off-by: Steven Rostedt (Google) <[email protected]> Tested-by: Steven Rostedt (Google) <[email protected]> Signed-off-by: Alexei Starovoitov <[email protected]> Link: https://lore.kernel.org/bpf/164735282673.1084943.18310504594134769804.stgit@devnote2
2022-03-17drm/i915/uapi: Add query for hwconfig blobRodrigo Vivi1-0/+1
In this interface i915 is returning a blob of data which it receives from the guc software. This blob provides some useful data about the hardware for drivers. The format of this blob will be documented in the Programmer Reference Manuals when released. Cc: Tvrtko Ursulin <[email protected]> Cc: Kenneth Graunke <[email protected]> Cc: Michal Wajdeczko <[email protected]> Cc: Slawomir Milczarek <[email protected]> Cc: Joonas Lahtinen <[email protected]> Signed-off-by: Rodrigo Vivi <[email protected]> Signed-off-by: John Harrison <[email protected]> Reviewed-by: Matthew Brost <[email protected]> Acked-by: Jordan Justen <[email protected]> Tested-by: Jordan Justen <[email protected]> Acked-by: Jon Bloomfield <[email protected]> Signed-off-by: John Harrison <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
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