powercap_register_control_type() calls device_register(), but does not
release the refcount of the device when it fails.
Call put_device() before returning an error to balance the refcount.
Since the kfree(control_type) will be done by powercap_release(), remove
the lines in powercap_register_control_type() before returning the error.
This bug was found by an experimental verifier that I am developing.
Signed-off-by: Joe Hattori <joe@pf.is.s.u-tokyo.ac.jp>
Link: https://patch.msgid.link/20250110010554.1583411-1-joe@pf.is.s.u-tokyo.ac.jp
[ rjw: Changelog edits ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
- Use str_enable_disable()-like helpers in cpufreq (Krzysztof
Kozlowski).
- Extend the Apple cpufreq driver to support more SoCs (Hector Martin,
Nick Chan).
- Add new cpufreq driver for Airoha SoCs (Christian Marangi).
- Fix using cpufreq-dt as module (Andreas Kemnade).
- Minor fixes for Sparc, SCMI, and Qcom cpufreq drivers (Ethan Carter
Edwards, Sibi Sankar, Manivannan Sadhasivam).
- Fix the maximum supported frequency computation in the ACPI cpufreq
driver to avoid relying on unfounded assumptions (Gautham Shenoy).
- Fix an amd-pstate driver regression with preferred core rankings not
being used (Mario Limonciello).
- Fix a precision issue with frequency calculation in the amd-pstate
driver (Naresh Solanki).
- Add ftrace event to the amd-pstate driver for active mode (Mario
Limonciello).
- Set default EPP policy on Ryzen processors in amd-pstate (Mario
Limonciello).
- Clean up the amd-pstate cpufreq driver and optimize it to increase
code reuse (Mario Limonciello, Dhananjay Ugwekar).
- Use CPPC to get scaling factors between HWP performance levels and
frequency in the intel_pstate driver and make it stop using a built
-in scaling factor for Arrow Lake processors (Rafael Wysocki).
- Make intel_pstate initialize epp_policy to CPUFREQ_POLICY_UNKNOWN for
consistency with CPU offline (Christian Loehle).
- Fix superfluous updates caused by need_freq_update in the schedutil
cpufreq governor (Sultan Alsawaf).
- Allow configuring the system suspend-resume (DPM) watchdog to warn
earlier than panic (Douglas Anderson).
- Implement devm_device_init_wakeup() helper and introduce a device-
managed variant of dev_pm_set_wake_irq() (Joe Hattori, Peng Fan).
- Remove direct inclusions of 'pm_wakeup.h' which should be only
included via 'device.h' (Wolfram Sang).
- Clean up two comments in the core system-wide PM code (Rafael
Wysocki, Randy Dunlap).
- Add Clearwater Forest processor support to the intel_idle cpuidle
driver (Artem Bityutskiy).
- Clean up the Exynos devfreq driver and devfreq core (Markus Elfring,
Jeongjun Park).
- Minor cleanups and fixes for OPP (Dan Carpenter, Neil Armstrong, Joe
Hattori).
- Implement dev_pm_opp_get_bw() (Neil Armstrong).
- Expose OPP reference counting helpers for Rust (Viresh Kumar).
- Fix TSC MHz calculation in cpupower (He Rongguang).
- Add install and uninstall options to bindings Makefile and add header
changes for cpufreq.h to SWIG bindings in cpupower (John B. Wyatt IV).
- Add missing residency header changes in cpuidle.h to SWIG bindings in
cpupower (John B. Wyatt IV).
- Add output files to .gitignore and clean them up in "make clean" in
selftests/cpufreq (Li Zhijian).
- Fix cross-compilation in cpupower Makefile (Peng Fan).
- Revise the is_valid flag handling for idle_monitor in the cpupower
utility (wangfushuai).
- Extend and clean up AMD processors support in cpupower (Mario
Limonciello).
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Merge tag 'pm-6.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management updates from Rafael Wysocki:
"The majority of changes here are cpufreq updates which are dominated
by amd-pstate driver changes, like in the previous cycle. Moreover,
changes related to amd-pstate are also the majority of cpupower
utility updates.
Included are some pieces of new hardware support, like the addition of
Clearwater Forest processors support to intel_idle, new cpufreq driver
for Airoha SoCs, and Apple cpufreq driver extensions to support more
SoCs. The intel_pstate driver is also extended to be able to support
new platforms by using ACPI CPPC to compute scaling factors between
HWP performance states and frequency.
The rest is mostly fixes and cleanups in assorted pieces of power
management code.
Specifics:
- Use str_enable_disable()-like helpers in cpufreq (Krzysztof
Kozlowski)
- Extend the Apple cpufreq driver to support more SoCs (Hector
Martin, Nick Chan)
- Add new cpufreq driver for Airoha SoCs (Christian Marangi)
- Fix using cpufreq-dt as module (Andreas Kemnade)
- Minor fixes for Sparc, SCMI, and Qcom cpufreq drivers (Ethan Carter
Edwards, Sibi Sankar, Manivannan Sadhasivam)
- Fix the maximum supported frequency computation in the ACPI cpufreq
driver to avoid relying on unfounded assumptions (Gautham Shenoy)
- Fix an amd-pstate driver regression with preferred core rankings
not being used (Mario Limonciello)
- Fix a precision issue with frequency calculation in the amd-pstate
driver (Naresh Solanki)
- Add ftrace event to the amd-pstate driver for active mode (Mario
Limonciello)
- Set default EPP policy on Ryzen processors in amd-pstate (Mario
Limonciello)
- Clean up the amd-pstate cpufreq driver and optimize it to increase
code reuse (Mario Limonciello, Dhananjay Ugwekar)
- Use CPPC to get scaling factors between HWP performance levels and
frequency in the intel_pstate driver and make it stop using a
built-in scaling factor for Arrow Lake processors (Rafael Wysocki)
- Make intel_pstate initialize epp_policy to CPUFREQ_POLICY_UNKNOWN
for consistency with CPU offline (Christian Loehle)
- Fix superfluous updates caused by need_freq_update in the schedutil
cpufreq governor (Sultan Alsawaf)
- Allow configuring the system suspend-resume (DPM) watchdog to warn
earlier than panic (Douglas Anderson)
- Implement devm_device_init_wakeup() helper and introduce a device-
managed variant of dev_pm_set_wake_irq() (Joe Hattori, Peng Fan)
- Remove direct inclusions of 'pm_wakeup.h' which should be only
included via 'device.h' (Wolfram Sang)
- Clean up two comments in the core system-wide PM code (Rafael
Wysocki, Randy Dunlap)
- Add Clearwater Forest processor support to the intel_idle cpuidle
driver (Artem Bityutskiy)
- Clean up the Exynos devfreq driver and devfreq core (Markus
Elfring, Jeongjun Park)
- Minor cleanups and fixes for OPP (Dan Carpenter, Neil Armstrong,
Joe Hattori)
- Implement dev_pm_opp_get_bw() (Neil Armstrong)
- Expose OPP reference counting helpers for Rust (Viresh Kumar)
- Fix TSC MHz calculation in cpupower (He Rongguang)
- Add install and uninstall options to bindings Makefile and add
header changes for cpufreq.h to SWIG bindings in cpupower (John B.
Wyatt IV)
- Add missing residency header changes in cpuidle.h to SWIG bindings
in cpupower (John B. Wyatt IV)
- Add output files to .gitignore and clean them up in "make clean" in
selftests/cpufreq (Li Zhijian)
- Fix cross-compilation in cpupower Makefile (Peng Fan)
- Revise the is_valid flag handling for idle_monitor in the cpupower
utility (wangfushuai)
- Extend and clean up AMD processors support in cpupower (Mario
Limonciello)"
* tag 'pm-6.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (67 commits)
PM / OPP: Add reference counting helpers for Rust implementation
PM: sleep: wakeirq: Introduce device-managed variant of dev_pm_set_wake_irq()
cpufreq: Use str_enable_disable()-like helpers
cpufreq: airoha: Add EN7581 CPUFreq SMCCC driver
PM: sleep: Allow configuring the DPM watchdog to warn earlier than panic
PM: sleep: convert comment from kernel-doc to plain comment
cpufreq: ACPI: Fix max-frequency computation
pm: cpupower: Add missing residency header changes in cpuidle.h to SWIG
PM / devfreq: exynos: remove unused function parameter
OPP: OF: Fix an OF node leak in _opp_add_static_v2()
cpufreq/amd-pstate: Refactor max frequency calculation
cpufreq/amd-pstate: Fix prefcore rankings
pm: cpupower: Add header changes for cpufreq.h to SWIG bindings
cpufreq: sparc: change kzalloc to kcalloc
cpufreq: qcom: Implement clk_ops::determine_rate() for qcom_cpufreq* clocks
cpufreq: qcom: Fix qcom_cpufreq_hw_recalc_rate() to query LUT if LMh IRQ is not available
cpufreq: apple-soc: Add Apple A7-A8X SoC cpufreq support
cpufreq: apple-soc: Set fallback transition latency to APPLE_DVFS_TRANSITION_TIMEOUT
cpufreq: apple-soc: Increase cluster switch timeout to 400us
cpufreq: apple-soc: Use 32-bit read for status register
...
I'm switching to a new email address, so update that. This is a new
commit, but shouldn't be an issue.
Minor fixes for formats and return values and missing ifdefs.
A fix for some error handling that causes a loss of messages.
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Merge tag 'for-linus-6.14-1' of https://github.com/cminyard/linux-ipmi
Pull ipmi updates from Corey Minyard:
- I'm switching to a new email address, so update that
- Minor fixes for formats and return values and missing ifdefs
- A fix for some error handling that causes a loss of messages
* tag 'for-linus-6.14-1' of https://github.com/cminyard/linux-ipmi:
MAINTAINERS: ipmi: update my email address
ipmi: ssif_bmc: Fix new request loss when bmc ready for a response
ipmi: make ipmi_destroy_user() return void
char:ipmi: Fix a not-used variable on a non-ACPI system
char:ipmi: Fix the wrong format specifier
ipmi: ipmb: Add check devm_kasprintf() returned value
drivers, per usual, and then a handful of drivers for other SoCs. Then the
usual pile of cleanups is fairly small data fixes or converting DT bindings to
YAML so they can be validated. No changes to the core framework besides an OF
node refcount bump that never got decremented.
New Drivers:
- 5L35023 variant of Versa 3 clock generator
- Various Qualcomm clk controllers: IPQ CMN PLL, SM6115 LPASS, SM750 global,
tcsr, rpmh, and display. X Plus GPU and global. QCS615 rpmh and MSM8937 and
MSM8940 RPM.
- Qualcomm Pongo and Taycan Alpha PLLs
- Qualcomm IPQ5424 NoC-related interconnect clks
- Renesas RZ/G3E (R9A09G047) SoC clk driver
- SAMA7D65 SoC clk driver
- Samsung Exynos990 SoC clk driver
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Merge tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux
Pull clk updates from Stephen Boyd:
"A pretty quiet cycle this time around. We have a bunch of new Qualcomm
clk drivers, per usual, and then a handful of drivers for other SoCs.
Then the usual pile of cleanups is fairly small data fixes or
converting DT bindings to YAML so they can be validated.
No changes to the core framework besides an OF node refcount bump that
never got decremented.
New Drivers:
- 5L35023 variant of Versa 3 clock generator
- Various Qualcomm clk controllers: IPQ CMN PLL, SM6115 LPASS, SM750
global, tcsr, rpmh, and display. X Plus GPU and global. QCS615 rpmh
and MSM8937 and MSM8940 RPM.
- Qualcomm Pongo and Taycan Alpha PLLs
- Qualcomm IPQ5424 NoC-related interconnect clks
- Renesas RZ/G3E (R9A09G047) SoC clk driver
- SAMA7D65 SoC clk driver
- Samsung Exynos990 SoC clk driver"
* tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux: (159 commits)
clk: analogbits: Fix incorrect calculation of vco rate delta
clk: bcm: rpi: Add disp clock
clk: bcm: rpi: Create helper to retrieve private data
clk: bcm: rpi: Enable minimize for all firmware clocks
clk: bcm: rpi: Allow cpufreq driver to also adjust gpu clocks
clk: bcm: rpi: Add ISP to exported clocks
clk: stm32f4: support spread spectrum clock generation
clk: stm32f4: use FIELD helpers to access the PLLCFGR fields
dt-bindings: clock: st,stm32-rcc: support spread spectrum clocking
dt-bindings: clock: convert stm32 rcc bindings to json-schema
clk: Use str_enable_disable-like helpers
clk: clk-loongson2: Fix the number count of clk provider
clk: clk-loongson2: Switch to use devm_clk_hw_register_fixed_rate_parent_data()
clk: starfive: Make _clk_get become a common helper function
clk: en7523: Add clock for eMMC for EN7581
dt-bindings: clock: add ID for eMMC for EN7581
dt-bindings: clock: drop NUM_CLOCKS define for EN7581
clk: en7523: Rework clock handling for different clock numbers
clk: thead: Fix cpu2vp_clk for TH1520 AP_SUBSYS clocks
clk: thead: Add CLK_IGNORE_UNUSED to fix TH1520 boot
...
Core:
- list-based mechanisms for handling auto-detected and userspace created
clients are replaced with a flag-based approach. The resulting code is
much simpler as well as the locking.
- i2c clients now get a default debugfs dir managed by the I2C core.
Drivers don't have to maintain their own directory anymore.
Drivers:
- xiic gains atomic_transfer support
- imx-lpi2c gains DMA and target mode support
- riic gets a collection of cleanups
- npcm gets a better timeout handling and more precise frequency setups
- davinci loses the unused platform_data
The rest is regular driver updates and improvements.
AT24:
- add new compatibles for at24 variants from Giantec and Puya
Semiconductor (together with a new vendor prefix)
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Merge tag 'i2c-for-6.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
Pull i2c updates from Wolfram Sang:
"Core:
- list-based mechanisms for handling auto-detected and userspace
created clients are replaced with a flag-based approach. The
resulting code is much simpler as well as the locking.
- i2c clients now get a default debugfs dir managed by the I2C core.
Drivers don't have to maintain their own directory anymore.
Driver updates:
- xiic: atomic_transfer support
- imx-lpi2c: DMA and target mode support
- riic cleanups
- npcm: better timeout handling and more precise frequency setups
- davinci: remove unused platform_data
- at24: add new compatibles for variants from Giantec and Puya
Semiconductor (together with a new vendor prefix)"
* tag 'i2c-for-6.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: (52 commits)
i2c: add kdoc for the new debugfs entry of clients
i2c: designware: Actually make use of the I2C_DW_COMMON and I2C_DW symbol namespaces
i2c: add core-managed per-client directory in debugfs
i2c: Force ELAN06FA touchpad I2C bus freq to 100KHz
i2c: riic: Add `riic_bus_barrier()` to check bus availability
i2c: riic: Use predefined macro and simplify clock tick calculation
i2c: riic: Mark riic_irqs array as const
i2c: riic: Make use of devres helper to request deasserted reset line
i2c: riic: Use GENMASK() macro for bitmask definitions
i2c: riic: Use BIT macro consistently
i2c: riic: Use local `dev` pointer in `dev_err_probe()`
i2c: riic: Use dev_err_probe in probe and riic_init_hw functions
i2c: riic: Introduce a separate variable for IRQ
i2c: amd756: Remove superfluous TODO
Revert "i2c: amd756: Fix endianness handling for word data"
i2c: i801: Add lis3lv02d for Dell Precision M6800
i2c: i801: Remove unnecessary PCI function call
i2c: core: Allocate temp client on the stack in i2c_detect
i2c: slave-eeprom: Constify 'struct bin_attribute'
i2c: imx-lpi2c: make controller available until the system enters suspend_noirq() and from resume_noirq().
...
This time there are very little changes for pwm. There is nothing new,
just a few maintenance cleanups.
The contributors this time around were Krzysztof Kozlowski, Mingwei
Zheng, Philipp Stanner, and Stanislav Jakubek. Thanks!
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Merge tag 'pwm/for-6.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ukleinek/linux
Pull pwm updates from Uwe Kleine-König:
"This time there are very little changes for pwm. There is nothing new,
just a few maintenance cleanups.
The contributors this time around were Krzysztof Kozlowski, Mingwei
Zheng, Philipp Stanner, and Stanislav Jakubek. Thanks!"
* tag 'pwm/for-6.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ukleinek/linux:
pwm: stm32: Add check for clk_enable()
dt-bindings: pwm: Correct indentation and style in DTS example
pwm: stm32-lp: Add check for clk_enable()
dt-bindings: pwm: marvell,berlin-pwm: Convert from txt to yaml
dt-bindings: pwm: sprd,ums512-pwm: convert to YAML
pwm: Replace deprecated PCI functions
- Share a helper to convert from crypto_profile to mmc_host
- Respect quirk_max_rate for non-UHS SDIO card too
MMC host:
- Add DT bindings for the mmc-slot
- Clarify DT bindings for the mmc-controller
- bcm2835: Add support for system-wide suspend/resume PM
- dw_mmc-exynos: Add support for the exynos8895 variant
- meson-mx-sdio: Convert DT bindings to dtschema
- mtk-sd: Fixup use of two register ranges
- mtk-sd: Add support for ignoring cmd response CRC
- sdhci-esdhc-imx: enable 'SDHCI_QUIRK_NO_LED' quirk for S32G
- sdhci-msm: Correctly set the load for the regulator
- sdhci-msm: Convert to use custom crypto profile
- sdhci-of-at91: Add support for the microchip sama7d65 variant
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Merge tag 'mmc-v6.14' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc
Pull MMC updates from Ulf Hansson:
"MMC core:
- Share a helper to convert from crypto_profile to mmc_host
- Respect quirk_max_rate for non-UHS SDIO card too
MMC host:
- Add DT bindings for the mmc-slot
- Clarify DT bindings for the mmc-controller
- bcm2835: Add support for system-wide suspend/resume PM
- dw_mmc-exynos: Add support for the exynos8895 variant
- meson-mx-sdio: Convert DT bindings to dtschema
- mtk-sd: Fixup use of two register ranges
- mtk-sd: Add support for ignoring cmd response CRC
- sdhci-esdhc-imx: enable 'SDHCI_QUIRK_NO_LED' quirk for S32G
- sdhci-msm: Correctly set the load for the regulator
- sdhci-msm: Convert to use custom crypto profile
- sdhci-of-at91: Add support for the microchip sama7d65 variant"
* tag 'mmc-v6.14' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc: (25 commits)
mmc: sdhci-msm: Correctly set the load for the regulator
mmc: hi3798mv200: Use syscon_regmap_lookup_by_phandle_args
mmc: Use of_property_present() for non-boolean properties
dt-bindings: mmc: samsung,exynos-dw-mshc: add specific compatible for exynos8895
mmc: sdhci-msm: convert to use custom crypto profile
mmc: crypto: add mmc_from_crypto_profile()
mmc: mtk-sd: Limit getting top_base to SoCs that require it
dt-bindings: mmc: mtk-sd: Document compatibles that need two register ranges
mmc: sdhci-acpi: Use devm_platform_ioremap_resource()
mmc: sdhci-acpi: Remove not so useful error message
dt-bindings: mmc: convert amlogic,meson-mx-sdio.txt to dtschema
dt-bindings: mmc: document mmc-slot
dt-bindings: mmc: controller: remove '|' when not needed
dt-bindings: mmc: controller: move properties common with slot out to mmc-controller-common
dt-bindings: mmc: controller: clarify the address-cells description
mmc: bcm2835: add suspend/resume pm support
dt-bindings: Drop Bhupesh Sharma from maintainers
mmc: core: don't include 'pm_wakeup.h' directly
mmc: mtk-sd: Add support for ignoring cmd response CRC
mmc: core: Introduce the MMC_RSP_R1B_NO_CRC response
...
* New drivers
- PMBus client driver for Intel CRPS185 power supply
- PMBus client driver for Texas Instruments TPS25990
* Chip support added to existing drivers
- pmbus/max15301: Add support for MAX15303
- pmbus/adm1275: Add adm1273 support
- lm75: Add NXP P3T1755 support; with it, add I3C support to the driver
- asus-ec-sensors: Add TUF GAMING X670E PLUS
* Other notable changes
- nct6683: Add customer IDs for several MSI and ASRock boards
- tmp108: Add regulator support
- Improve write protect support in PMBus core
- pmbus/dps920ab: Add ability to instantiate through i2c
- The hwmon core now accepts NULL as device name parameter to
[devm_]hwmon_device_register_with_info ans uses the parent device
name as fallback in that case
- The PMBus core now provides the PMBUs revision in a debugfs file
- asus-ec-sensors: Support for optional CPU fan on AMD 600 motherboards
- raspberrypi: Add PM suspend/resume support
- dell-smm: Enable manual fan control support on Dell XPS 9370
- pwm-fan: Default to maximum cooling level if provided
* Various other minor fixes and improvements
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Merge tag 'hwmon-for-v6.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging
Pull hwmon updates from Guenter Roeck:
"New drivers:
- PMBus client driver for Intel CRPS185 power supply
- PMBus client driver for Texas Instruments TPS25990
Chip support added to existing drivers:
- pmbus/max15301: Add support for MAX15303
- pmbus/adm1275: Add adm1273 support
- lm75: Add NXP P3T1755 support; with it, add I3C support to the
driver
- asus-ec-sensors: Add TUF GAMING X670E PLUS
Other notable changes:
- nct6683: Add customer IDs for several MSI and ASRock boards
- tmp108: Add regulator support
- Improve write protect support in PMBus core
- pmbus/dps920ab: Add ability to instantiate through i2c
- The hwmon core now accepts NULL as device name parameter to
[devm_]hwmon_device_register_with_info ans uses the parent device
name as fallback in that case
- The PMBus core now provides the PMBUs revision in a debugfs file
- asus-ec-sensors: Support for optional CPU fan on AMD 600
motherboards
- raspberrypi: Add PM suspend/resume support
- dell-smm: Enable manual fan control support on Dell XPS 9370
- pwm-fan: Default to maximum cooling level if provided
And various other minor fixes and improvements"
* tag 'hwmon-for-v6.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging: (44 commits)
hwmon: pmbus: dps920ab: Add ability to instantiate through i2c
hwmon: (pwm-fan) Default to the Maximum cooling level if provided
hwmon: (asus_atk0110) Use str_enabled_disabled() and str_enable_disable() helpers
hwmon: Fix help text for aspeed-g6-pwm-tach
hwmon: (dell-smm) Add Dell XPS 9370 to fan control whitelist
hwmon: (acpi_power_meter) Fix update the power trip points on failure
hwmon: (acpi_power_meter) Fix uninitialized variables
hwmon: (core) Use device name as a fallback in devm_hwmon_device_register_with_info
hwmon: (pmbus/max15301) Add support for MAX15303
hwmon: (pmbus/adm1275) add adm1273 support
dt-bindings: hwmon: adm1275: add adm1273
hwmon: (nct6683) Add another customer ID for MSI
hwmon: (pwm-fan): Make use of device properties everywhere
hwmon: (lm75) add I3C support for P3T1755
hwmon: (lm75) separate probe into common and I2C parts
hwmon: (lm75) Remove superfluous 'client' member from private struct
hwmon: (lm75) simplify regulator handling
hwmon: (lm75) simplify lm75_write_config()
hwmon: (lm75) Hide register size differences in regmap access functions
hwmon: (pmbus/crps) Add Intel CRPS185 power supply
...
- Fix a memory leak in the cht-wcove driver by using devm_led_classdev_register().
- Fix an OF node reference leak in the netxbig driver.
- Ensure PWM is disabled properly in pwm-multicolor suspend.
- Add support for Texas Instruments LP8864, LP8864S, LP8866 LED-backlight drivers.
- Add support for STMicroelectronics's LED1202 12-channel LED driver.
- Convert LP8860 bindings to YAML format.
- Add bindings for the TI LP8864/LP8866 LED drivers.
- Add LED1202 LED controller bindings.
- Fix path to color definitions in leds-class-multicolor.yaml.
- Add pm660l compatible to qcom,spmi-flash-led bindings.
- Extend cznic,turris-omnia-leds binding with interrupts property.
- Add documentation for the STMicroelectronics LED1202 driver.
- Add entry for AAEON UP board FPGA drivers in MAINTAINERS.
- Fix a wrong format specifier in the ledtrig-activity driver.
- Fix a bug in the lp8860 driver where only half of the EEPROM was written.
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Merge tag 'leds-next-6.14' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/leds
Pull LED updates from Lee Jones:
- Allow struct bin_attribute instances to be placed in read-only memory
for enhanced protection
- Fix a memory leak in the cht-wcove driver by using
devm_led_classdev_register()
- Fix an OF node reference leak in the netxbig driver
- Ensure PWM is disabled properly in pwm-multicolor suspend
- Add support for Texas Instruments LP8864, LP8864S, LP8866
LED-backlight drivers
- Add support for STMicroelectronics's LED1202 12-channel LED driver
- Convert LP8860 bindings to YAML format
- Add bindings for the TI LP8864/LP8866 LED drivers
- Add LED1202 LED controller bindings
- Fix path to color definitions in leds-class-multicolor.yaml
- Add pm660l compatible to qcom,spmi-flash-led bindings
- Extend cznic,turris-omnia-leds binding with interrupts property
- Add documentation for the STMicroelectronics LED1202 driver
- Add entry for AAEON UP board FPGA drivers in MAINTAINERS
- Fix a wrong format specifier in the ledtrig-activity driver
- Fix a bug in the lp8860 driver where only half of the EEPROM was
written
* tag 'leds-next-6.14' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/leds: (28 commits)
leds: triggers: Constify 'struct bin_attribute'
leds: cht-wcove: Use devm_led_classdev_register() to avoid memory leak
leds: lp8864: Add support for Texas Instruments LP8864, LP8864S, LP8866 LED-backlights
dt-bindings: leds: Convert LP8860 into YAML format
leds: Add LED1202 I2C driver
dt-bindings: leds: Add LED1202 LED Controller
Documentation:leds: Add leds-st1202.rst
leds: pwm-multicolor: Disable PWM when going to suspend
leds: netxbig: Fix an OF node reference leak in netxbig_leds_get_of_pdata()
turris-omnia-mcu-interface.h: Move macro definitions outside of enums
MAINTAINERS: Add entry for AAEON UP board FPGA drivers
leds: Add AAEON UP board LED driver
leds: trigger: netdev: Check offload ability on interface up
leds: turris-omnia: Use uppercase first letter in all comments
leds: turris-omnia: Use dev_err_probe() where appropriate
leds: turris-omnia: Inform about missing LED gamma correction feature in the MCU driver
platform: cznic: turris-omnia-mcu: Inform about missing LED panel brightness change interrupt feature
leds: turris-omnia: Notify sysfs on MCU global LEDs brightness change
leds: turris-omnia: Document driver private structures
dt-bindings: leds: cznic,turris-omnia-leds: Allow interrupts property
...
- Remove unused platform driver support for syscon.
- Allow syscon nodes to be registered without a "syscon" compatible string.
- Make `platform_data` pointer const in struct mfd_cell.
- Revert support for multiple AXP PMICs to avoid regressions.
- Increase SoundWire attach timeout and use gpiod_set_raw() for GPIO operation.
- Store the result from fault_log() for use by other sub-components.
- Fix an invalid regmap-config max_register value.
- Add another Gemini Lake ISA bridge PCI device ID.
- Use devm_register_power_off_handler() to simplify code.
- Add support for QNAP microcontroller units, including LEDs, input, and hwmon.
- Use MFD_CELL macros and remove unused code.
- Add support for AAEON UP board FPGA.
- Remove unused includes.
- Fix various typos and compatibility issues in multiple bindings.
- Add new bindings for rk3562 QoS, LED1202, and qcom,tcsr-ipq5424.
- Convert several bindings to YAML schema.
- Update sprd,sc2731 bindings to reference sprd,sc2731-efuse bindings directly.
- Fix rohm,bd71815 bindings by correcting resistor values and typos.
- Documentation improvements:
- Add documentation for LED1202 and qnap-mcu-hwmon.
- Adjust the file entry for the qnap-mcu header in MAINTAINERS.
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Merge tag 'mfd-next-6.14' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd
Pull mfd updates from Lee Jones:
- Fix race in device_node_get_regmap() using more extensive locking
- Remove unused platform driver support for syscon
- Allow syscon nodes to be registered without a "syscon" compatible
string
- Make `platform_data` pointer const in struct mfd_cell
- Revert support for multiple AXP PMICs to avoid regressions
- Increase SoundWire attach timeout and use gpiod_set_raw() for GPIO
operation
- Store the result from fault_log() for use by other sub-components
- Fix an invalid regmap-config max_register value
- Add another Gemini Lake ISA bridge PCI device ID
- Use devm_register_power_off_handler() to simplify code
- Add support for QNAP microcontroller units, including LEDs, input,
and hwmon
- Use MFD_CELL macros and remove unused code
- Add support for AAEON UP board FPGA
- Remove unused includes
- Fix various typos and compatibility issues in multiple bindings
- Add new bindings for rk3562 QoS, LED1202, and qcom,tcsr-ipq5424
- Convert several bindings to YAML schema
- Update sprd,sc2731 bindings to reference sprd,sc2731-efuse bindings
directly
- Fix rohm,bd71815 bindings by correcting resistor values and typos
- Documentation improvements:
- Add documentation for LED1202 and qnap-mcu-hwmon
- Adjust the file entry for the qnap-mcu header in MAINTAINERS
* tag 'mfd-next-6.14' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd: (35 commits)
MAINTAINERS: Adjust the file entry for the qnap-mcu header
dt-bindings: mfd: syscon: Fix ti,j784s4-acspcie-proxy-ctrl compatible
dt-bindings: mfd: syscon: Fix al,alpine-sysfabric-service compatible
Revert "mfd: axp20x: Allow multiple regulators"
dt-bindings: mfd: syscon: Add rk3562 QoS register compatible
mfd: syscon: Allow syscon nodes without a "syscon" compatible
mfd: syscon: Remove the platform driver support
mfd: syscon: Fix race in device_node_get_regmap()
dt-bindings: mfd: atmel: Convert to YAML schema
dt-bindings: mfd: atmel,at91sam9260: Convert to YAML schema
dt-bindings: mfd: sprd,sc2731: Reference sprd,sc2731-efuse bindings
mfd: tps65219: Remove unused macros & add regmap.h
mfd: tps65219: Use MFD_CELL macros
leds: Add LED1202 I2C driver
dt-bindings: leds: Add LED1202 LED Controller
Documentation:leds: Add leds-st1202.rst
mfd: Add support for AAEON UP board FPGA
mfd: da9052: Store result from fault_log
mfd: intel_soc_pmic_chtdc_ti: Fix invalid regmap-config max_register value
mfd: cs42l43: Use devres for remove as well
...
This is a fairly quiet release for the most part, though we do have one
really nice improvement in the spi-mem framework which will improve
performance for flash devices especially when built on by changes in the
MTD subsystem which are also due to be sent this merge window. There's
also been some substantial work on some of the drivers, highlights
include:
- Support for per-operation bus frequency in the spi-mem framework,
meaning speeds are no longer limited by the slowest operation.
- ACPI support and improved power management for Rockchip SFC
controllers.
- Support for Atmel SAM7G5 QuadSPI and KEBA SPI controllers.
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Merge tag 'spi-v6.14' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi
Pull spi updates from Mark Brown:
"This is a fairly quiet release for the most part, though we do have
one really nice improvement in the spi-mem framework which will
improve performance for flash devices especially when built on by
changes in the MTD subsystem which are also due to be sent this merge
window.
There's also been some substantial work on some of the drivers,
highlights include:
- Support for per-operation bus frequency in the spi-mem framework,
meaning speeds are no longer limited by the slowest operation
- ACPI support and improved power management for Rockchip SFC
controllers
- Support for Atmel SAM7G5 QuadSPI and KEBA SPI controllers"
* tag 'spi-v6.14' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: (49 commits)
spi: pxa2xx: Introduce __lpss_ssp_update_priv() helper
spi: ti-qspi: Use syscon_regmap_lookup_by_phandle_args
spi: amd: Fix -Wuninitialized in amd_spi_exec_mem_op()
spi: spi-mem: Estimate the time taken by operations
spi: spi-mem: Create macros for DTR operation
spi: spi-mem: Reorder spi-mem macro assignments
spi: zynqmp-gqspi: Support per spi-mem operation frequency switches
spi: zynq-qspi: Support per spi-mem operation frequency switches
spi: spi-ti-qspi: Support per spi-mem operation frequency switches
spi: spi-sn-f-ospi: Support per spi-mem operation frequency switches
spi: rockchip-sfc: Support per spi-mem operation frequency switches
spi: nxp-fspi: Support per spi-mem operation frequency switches
spi: mxic: Support per spi-mem operation frequency switches
spi: mt65xx: Support per spi-mem operation frequency switches
spi: microchip-core-qspi: Support per spi-mem operation frequency switches
spi: fsl-qspi: Support per spi-mem operation frequency switches
spi: dw: Support per spi-mem operation frequency switches
spi: cadence-qspi: Support per spi-mem operation frequency switches
spi: amlogic-spifc-a1: Support per spi-mem operation frequency switches
spi: amd: Drop redundant check
...
This was a very quiet release, aside from some smaller improvements we
have:
- Support for power budgeting on regulators, initially targeted at some
still in review support for PSE controllers but generally useful.
- Support for error interrupts from ROHM BD96801 devices.
- Support for NXP PCA9452.
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Merge tag 'regulator-v6.14' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator
Pull regulator updates from Mark Brown:
"This was a very quiet release, aside from some smaller improvements we
have:
- Support for power budgeting on regulators, initially targeted at
some still in review support for PSE controllers but generally
useful
- Support for error interrupts from ROHM BD96801 devices
- Support for NXP PCA9452"
* tag 'regulator-v6.14' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator:
regulator: dt-bindings: Add regulator-power-budget-milliwatt property
regulator: Add support for power budget
regulator: core: Resolve supply using of_node from regulator_config
regulator: of: Implement the unwind path of of_regulator_match()
regulator: tps65219: Remove debugging helper function
regulator: tps65219: Remove MODULE_ALIAS
regulator: tps65219: Update driver name
regulator: tps65219: Use dev_err_probe() instead of dev_err()
regulator: dt-bindings: mt6315: Drop regulator-compatible property
regulator: pca9450: Add PMIC pca9452 support
regulator: dt-bindings: pca9450: Add pca9452 support
regulator: pca9450: Use dev_err_probe() to simplify code
regulator: pca9450: add enable_value for all bucks
regulator: bd96801: Add ERRB IRQ
There's one big bit of work this time around, the addition of support for
a greater range of MBQ access sizes to SoundWire devices together with
support for deferred read/write. The MBQ register maps generally have
variable register sizes, the variable regiseter size support allows them
to be handled much more naturally within regmap with less open coding in
drivers. The deferred read/write support avoids spurious errors when
devices make use of a bus feature allowing them to indicate they're
busy. These changes pull in a supporting SoundWire change, and there's
an ASoC change building off the new code.
The remainder of the changes are code cleanups.
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Merge tag 'regmap-v6.14' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap
Pull regmap updates from Mark Brown:
"There's one big bit of work this time around, the addition of support
for a greater range of MBQ access sizes to SoundWire devices together
with support for deferred read/write.
The MBQ register maps generally have variable register sizes, the
variable regiseter size support allows them to be handled much more
naturally within regmap with less open coding in drivers.
The deferred read/write support avoids spurious errors when devices
make use of a bus feature allowing them to indicate they're busy.
These changes pull in a supporting SoundWire change, and there's an
ASoC change building off the new code.
The remainder of the changes are code cleanups"
* tag 'regmap-v6.14' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap:
regmap: sdw-mbq: Add support for SDCA deferred controls
regmap: sdw-mbq: Add support for further MBQ register sizes
ASoC: SDCA: Update list of entity_0 controls
soundwire: SDCA: Add additional SDCA address macros
regmap: regmap_multi_reg_read(): make register list const
regmap: cache: rbtree: use krealloc_array() to replace krealloc()
regmap: cache: mapple: use kmalloc_array() to replace kmalloc()
regmap: place foo / 8 and foo % 8 closer to each other
regmap: Use BITS_TO_BYTES()
regmap: cache: Use BITS_TO_BYTES()
- support a new model in the qcom-wcn pwrseq driver
- explain the need to keep the WLAN_EN GPIO workaround for now with
a FIXME comment
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Merge tag 'pwrseq-updates-for-v6.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux
Pull power sequencing updates from Bartosz Golaszewski:
"We added support for another Qualcomm WCN model and a FIXME comment
that explains why we still need to keep a GPIO workaround for now
despite having merged a set of changes to the PCI code that seemingly
fixed the underlying problem:
- support a new model in the qcom-wcn pwrseq driver
- explain the need to keep the WLAN_EN GPIO workaround for now with a
FIXME comment"
* tag 'pwrseq-updates-for-v6.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux:
power: sequencing: qcom-wcn: explain why we need the WLAN_EN GPIO hack
power: sequencing: qcom-wcn: add support for the WCN6750 PMU
Driver improvements:
- support a new model in gpio-mpc8xxx
- refactor gpio-tqmx86 and add support for direction setting
- allow building gpio-omap with COMPILE_TEST=y
- use gpiochip_get_data() instead of dev_get_drvdata() in gpio-twl6040
- drop unued field from driver data in gpio-altera
- use generic request/free callbacks in gpio-regmap for better integration
with pinctrl
- use dev_err_probe() where applicable in gpio-pca953x
- use existing dedicated GPIO defines in gpio-tps65219 instead of custom
ones
DT bindings:
- document a new model in fsl,qoriq-gpio
- explain the chip's latch clock pin and how it works like chip-select
in fairchild,74hc595
- enable the gpio-line-names property for gpio-brcmstb
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Merge tag 'gpio-updates-for-v6.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux
Pull gpio updates from Bartosz Golaszewski:
"Thanks to little activity in December, this is really tiny. Just a few
updates to drivers and device-tree bindings.
Driver improvements:
- support a new model in gpio-mpc8xxx
- refactor gpio-tqmx86 and add support for direction setting
- allow building gpio-omap with COMPILE_TEST=y
- use gpiochip_get_data() instead of dev_get_drvdata() in
gpio-twl6040
- drop unued field from driver data in gpio-altera
- use generic request/free callbacks in gpio-regmap for better
integration with pinctrl
- use dev_err_probe() where applicable in gpio-pca953x
- use existing dedicated GPIO defines in gpio-tps65219 instead of
custom ones
DT bindings:
- document a new model in fsl,qoriq-gpio
- explain the chip's latch clock pin and how it works like
chip-select in fairchild,74hc595
- enable the gpio-line-names property for gpio-brcmstb"
* tag 'gpio-updates-for-v6.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux:
gpio: regmap: Use generic request/free ops
gpio: altera: Drop .mapped_irq from driver data
gpio: mpc8xxx: Add MPC8314 support
dt-bindings: gpio: fsl,qoriq-gpio: Add compatible string fsl,mpc8314-gpio
dt-bindings: gpio: fairchild,74hc595: Document chip select vs. latch clock
gpio: tps65219: Use existing kernel gpio macros
gpio: pca953x: log an error when failing to get the reset GPIO
dt-bindings: gpio: brcmstb: permit gpio-line-names property
gpio: tqmx86: add support for changing GPIO directions
gpio: tqmx86: introduce tqmx86_gpio_clrsetbits() helper
gpio: tqmx86: use cleanup guards for spinlock
gpio: tqmx86: consistently refer to IRQs by hwirq numbers
gpio: tqmx86: add macros for interrupt configuration
gpio: omap: allow building the module with COMPILE_TEST=y
gpio: twl4030: use gpiochip_get_data
Core
----
- More core refactoring to reduce the RTNL lock contention,
including preparatory work for the per-network namespace RTNL lock,
replacing RTNL lock with a per device-one to protect NAPI-related
net device data and moving synchronize_net() calls outside such
lock.
- Extend drop reasons usage, adding net scheduler, AF_UNIX, bridge and
more specific TCP coverage.
- Reduce network namespace tear-down time by removing per-subsystems
synchronize_net() in tipc and sched.
- Add flow label selector support for fib rules, allowing traffic
redirection based on such header field.
Netfilter
---------
- Do not remove netdev basechain when last device is gone, allowing
netdev basechains without devices.
- Revisit the flowtable teardown strategy, dealing better with fin,
reset and re-open events.
- Scale-up IP-vs connection dumping by avoiding linear search on
each restart.
Protocols
---------
- A significant XDP socket refactor, consolidating and optimizing
several helpers into the core
- Better scaling of ICMP rate-limiting, by removing false-sharing in
inet peers handling.
- Introduces netlink notifications for multicast IPv4 and IPv6
address changes.
- Add ipsec support for IP-TFS/AggFrag encapsulation, allowing
aggregation and fragmentation of the inner IP.
- Add sysctl to configure TIME-WAIT reuse delay for TCP sockets,
to avoid local port exhaustion issues when the average connection
lifetime is very short.
- Support updating keys (re-keying) for connections using kernel
TLS (for TLS 1.3 only).
- Support ipv4-mapped ipv6 address clients in smc-r v2.
- Add support for jumbo data packet transmission in RxRPC sockets,
gluing multiple data packets in a single UDP packet.
- Support RxRPC RACK-TLP to manage packet loss and retransmission in
conjunction with the congestion control algorithm.
Driver API
----------
- Introduce a unified and structured interface for reporting PHY
statistics, exposing consistent data across different H/W via
ethtool.
- Make timestamping selectable, allow the user to select the desired
hwtstamp provider (PHY or MAC) administratively.
- Add support for configuring a header-data-split threshold (HDS)
value via ethtool, to deal with partial or buggy H/W implementation.
- Consolidate DSA drivers Energy Efficiency Ethernet support.
- Add EEE management to phylink, making use of the phylib
implementation.
- Add phylib support for in-band capabilities negotiation.
- Simplify how phylib-enabled mac drivers expose the supported
interfaces.
Tests and tooling
-----------------
- Make the YNL tool package-friendly to make it easier to deploy it
separately from the kernel.
- Increase TCP selftest coverage importing several packetdrill
test-cases.
- Regenerate the ethtool uapi header from the YNL spec,
to ease maintenance and future development.
- Add YNL support for decoding the link types used in net
self-tests, allowing a single build to run both net and
drivers/net.
Drivers
-------
- Ethernet high-speed NICs:
- nVidia/Mellanox (mlx5):
- add cross E-Switch QoS support
- add SW Steering support for ConnectX-8
- implement support for HW-Managed Flow Steering, improving the
rule deletion/insertion rate
- support for multi-host LAG
- Intel (ixgbe, ice, igb):
- ice: add support for devlink health events
- ixgbe: add initial support for E610 chipset variant
- igb: add support for AF_XDP zero-copy
- Meta:
- add support for basic RSS config
- allow changing the number of channels
- add hardware monitoring support
- Broadcom (bnxt):
- implement TCP data split and HDS threshold ethtool support,
enabling Device Memory TCP.
- Marvell Octeon:
- implement egress ipsec offload support for the cn10k family
- Hisilicon (HIBMC):
- implement unicast MAC filtering
- Ethernet NICs embedded and virtual:
- Convert UDP tunnel drivers to NETDEV_PCPU_STAT_DSTATS, avoiding
contented atomic operations for drop counters
- Freescale:
- quicc: phylink conversion
- enetc: support Tx and Rx checksum offload and improve TSO
performances
- MediaTek:
- airoha: introduce support for ETS and HTB Qdisc offload
- Microchip:
- lan78XX USB: preparation work for phylink conversion
- Synopsys (stmmac):
- support DWMAC IP on NXP Automotive SoCs S32G2xx/S32G3xx/S32R45
- refactor EEE support to leverage the new driver API
- optimize DMA and cache access to increase raw RX performances
by 40%
- TI:
- icssg-prueth: add multicast filtering support for VLAN
interface
- netkit:
- add ability to configure head/tailroom
- VXLAN:
- accepts packets with user-defined reserved bit
- Ethernet switches:
- Microchip:
- lan969x: add RGMII support
- lan969x: improve TX and RX performance using the FDMA engine
- nVidia/Mellanox:
- move Tx header handling to PCI driver, to ease XDP support
- Ethernet PHYs:
- Texas Instruments DP83822:
- add support for GPIO2 clock output
- Realtek:
- 8169: add support for RTL8125D rev.b
- rtl822x: add hwmon support for the temperature sensor
- Microchip:
- add support for RDS PTP hardware
- consolidate periodic output signal generation
- CAN:
- several DT-bindings to DT schema conversions
- tcan4x5x:
- add HW standby support
- support nWKRQ voltage selection
- kvaser:
- allowing Bus Error Reporting runtime configuration
- WiFi:
- the on-going Multi-Link Operation (MLO) effort continues, affecting
both the stack and in drivers
- mac80211/cfg80211:
- Emergency Preparedness Communication Services (EPCS) station mode
support
- support for adding and removing station links for MLO
- add support for WiFi 7/EHT mesh over 320 MHz channels
- report Tx power info for each link
- RealTek (rtw88):
- enable USB Rx aggregation and USB 3 to improve performance
- LED support
- RealTek (rtw89):
- refactor power save to support Multi-Link Operations
- add support for RTL8922AE-VS variant
- MediaTek (mt76):
- single wiphy multiband support (preparation for MLO)
- p2p device support
- add TP-Link TXE50UH USB adapter support
- Qualcomm (ath10k):
- support for the QCA6698AQ IP core
- Qualcomm (ath12k):
- enable MLO for QCN9274
- Bluetooth:
- Allow sysfs to trigger hdev reset, to allow recovering devices
not responsive from user-space
- MediaTek: add support for MT7922, MT7925, MT7921e devices
- Realtek: add support for RTL8851BE devices
- Qualcomm: add support for WCN785x devices
- ISO: allow BIG re-sync
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Merge tag 'net-next-6.14' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
Pull networking updates from Paolo Abeni:
"This is slightly smaller than usual, with the most interesting work
being still around RTNL scope reduction.
Core:
- More core refactoring to reduce the RTNL lock contention, including
preparatory work for the per-network namespace RTNL lock, replacing
RTNL lock with a per device-one to protect NAPI-related net device
data and moving synchronize_net() calls outside such lock.
- Extend drop reasons usage, adding net scheduler, AF_UNIX, bridge
and more specific TCP coverage.
- Reduce network namespace tear-down time by removing per-subsystems
synchronize_net() in tipc and sched.
- Add flow label selector support for fib rules, allowing traffic
redirection based on such header field.
Netfilter:
- Do not remove netdev basechain when last device is gone, allowing
netdev basechains without devices.
- Revisit the flowtable teardown strategy, dealing better with fin,
reset and re-open events.
- Scale-up IP-vs connection dumping by avoiding linear search on each
restart.
Protocols:
- A significant XDP socket refactor, consolidating and optimizing
several helpers into the core
- Better scaling of ICMP rate-limiting, by removing false-sharing in
inet peers handling.
- Introduces netlink notifications for multicast IPv4 and IPv6
address changes.
- Add ipsec support for IP-TFS/AggFrag encapsulation, allowing
aggregation and fragmentation of the inner IP.
- Add sysctl to configure TIME-WAIT reuse delay for TCP sockets, to
avoid local port exhaustion issues when the average connection
lifetime is very short.
- Support updating keys (re-keying) for connections using kernel TLS
(for TLS 1.3 only).
- Support ipv4-mapped ipv6 address clients in smc-r v2.
- Add support for jumbo data packet transmission in RxRPC sockets,
gluing multiple data packets in a single UDP packet.
- Support RxRPC RACK-TLP to manage packet loss and retransmission in
conjunction with the congestion control algorithm.
Driver API:
- Introduce a unified and structured interface for reporting PHY
statistics, exposing consistent data across different H/W via
ethtool.
- Make timestamping selectable, allow the user to select the desired
hwtstamp provider (PHY or MAC) administratively.
- Add support for configuring a header-data-split threshold (HDS)
value via ethtool, to deal with partial or buggy H/W
implementation.
- Consolidate DSA drivers Energy Efficiency Ethernet support.
- Add EEE management to phylink, making use of the phylib
implementation.
- Add phylib support for in-band capabilities negotiation.
- Simplify how phylib-enabled mac drivers expose the supported
interfaces.
Tests and tooling:
- Make the YNL tool package-friendly to make it easier to deploy it
separately from the kernel.
- Increase TCP selftest coverage importing several packetdrill
test-cases.
- Regenerate the ethtool uapi header from the YNL spec, to ease
maintenance and future development.
- Add YNL support for decoding the link types used in net self-tests,
allowing a single build to run both net and drivers/net.
Drivers:
- Ethernet high-speed NICs:
- nVidia/Mellanox (mlx5):
- add cross E-Switch QoS support
- add SW Steering support for ConnectX-8
- implement support for HW-Managed Flow Steering, improving the
rule deletion/insertion rate
- support for multi-host LAG
- Intel (ixgbe, ice, igb):
- ice: add support for devlink health events
- ixgbe: add initial support for E610 chipset variant
- igb: add support for AF_XDP zero-copy
- Meta:
- add support for basic RSS config
- allow changing the number of channels
- add hardware monitoring support
- Broadcom (bnxt):
- implement TCP data split and HDS threshold ethtool support,
enabling Device Memory TCP.
- Marvell Octeon:
- implement egress ipsec offload support for the cn10k family
- Hisilicon (HIBMC):
- implement unicast MAC filtering
- Ethernet NICs embedded and virtual:
- Convert UDP tunnel drivers to NETDEV_PCPU_STAT_DSTATS, avoiding
contented atomic operations for drop counters
- Freescale:
- quicc: phylink conversion
- enetc: support Tx and Rx checksum offload and improve TSO
performances
- MediaTek:
- airoha: introduce support for ETS and HTB Qdisc offload
- Microchip:
- lan78XX USB: preparation work for phylink conversion
- Synopsys (stmmac):
- support DWMAC IP on NXP Automotive SoCs S32G2xx/S32G3xx/S32R45
- refactor EEE support to leverage the new driver API
- optimize DMA and cache access to increase raw RX performances
by 40%
- TI:
- icssg-prueth: add multicast filtering support for VLAN
interface
- netkit:
- add ability to configure head/tailroom
- VXLAN:
- accepts packets with user-defined reserved bit
- Ethernet switches:
- Microchip:
- lan969x: add RGMII support
- lan969x: improve TX and RX performance using the FDMA engine
- nVidia/Mellanox:
- move Tx header handling to PCI driver, to ease XDP support
- Ethernet PHYs:
- Texas Instruments DP83822:
- add support for GPIO2 clock output
- Realtek:
- 8169: add support for RTL8125D rev.b
- rtl822x: add hwmon support for the temperature sensor
- Microchip:
- add support for RDS PTP hardware
- consolidate periodic output signal generation
- CAN:
- several DT-bindings to DT schema conversions
- tcan4x5x:
- add HW standby support
- support nWKRQ voltage selection
- kvaser:
- allowing Bus Error Reporting runtime configuration
- WiFi:
- the on-going Multi-Link Operation (MLO) effort continues,
affecting both the stack and in drivers
- mac80211/cfg80211:
- Emergency Preparedness Communication Services (EPCS) station
mode support
- support for adding and removing station links for MLO
- add support for WiFi 7/EHT mesh over 320 MHz channels
- report Tx power info for each link
- RealTek (rtw88):
- enable USB Rx aggregation and USB 3 to improve performance
- LED support
- RealTek (rtw89):
- refactor power save to support Multi-Link Operations
- add support for RTL8922AE-VS variant
- MediaTek (mt76):
- single wiphy multiband support (preparation for MLO)
- p2p device support
- add TP-Link TXE50UH USB adapter support
- Qualcomm (ath10k):
- support for the QCA6698AQ IP core
- Qualcomm (ath12k):
- enable MLO for QCN9274
- Bluetooth:
- Allow sysfs to trigger hdev reset, to allow recovering devices
not responsive from user-space
- MediaTek: add support for MT7922, MT7925, MT7921e devices
- Realtek: add support for RTL8851BE devices
- Qualcomm: add support for WCN785x devices
- ISO: allow BIG re-sync"
* tag 'net-next-6.14' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1386 commits)
net/rose: prevent integer overflows in rose_setsockopt()
net: phylink: fix regression when binding a PHY
net: ethernet: ti: am65-cpsw: streamline TX queue creation and cleanup
net: ethernet: ti: am65-cpsw: streamline RX queue creation and cleanup
net: ethernet: ti: am65-cpsw: ensure proper channel cleanup in error path
ipv6: Convert inet6_rtm_deladdr() to per-netns RTNL.
ipv6: Convert inet6_rtm_newaddr() to per-netns RTNL.
ipv6: Move lifetime validation to inet6_rtm_newaddr().
ipv6: Set cfg.ifa_flags before device lookup in inet6_rtm_newaddr().
ipv6: Pass dev to inet6_addr_add().
ipv6: Convert inet6_ioctl() to per-netns RTNL.
ipv6: Hold rtnl_net_lock() in addrconf_init() and addrconf_cleanup().
ipv6: Hold rtnl_net_lock() in addrconf_dad_work().
ipv6: Hold rtnl_net_lock() in addrconf_verify_work().
ipv6: Convert net.ipv6.conf.${DEV}.XXX sysctl to per-netns RTNL.
ipv6: Add __in6_dev_get_rtnl_net().
net: stmmac: Drop redundant skb_mark_for_recycle() for SKB frags
net: mii: Fix the Speed display when the network cable is not connected
sysctl net: Remove macro checks for CONFIG_SYSCTL
eth: bnxt: update header sizing defaults
...
When the 'cachestat()' system call was added in commit cf264e1329
("cachestat: implement cachestat syscall"), it was meant to be a much
more convenient (and performant) version of mincore() that didn't need
mapping things into the user virtual address space in order to work.
But it ended up missing the "check for writability or ownership" fix for
mincore(), done in commit 134fca9063 ("mm/mincore.c: make mincore()
more conservative").
This just adds equivalent logic to 'cachestat()', modified for the file
context (rather than vma).
Reported-by: Sudheendra Raghav Neela <sneela@tugraz.at>
Fixes: cf264e1329 ("cachestat: implement cachestat syscall")
Tested-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Nhat Pham <nphamcs@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Merge tag 'audit-pr-20250121' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/audit
Pull audit update from Paul Moore:
"A single audit patch that fixes a problem when collecting pathnames
for audit PATH records that was caused by some faulty pathname
matching logic"
* tag 'audit-pr-20250121' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/audit:
audit: fix suffixed '/' filename matching
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Merge tag 'selinux-pr-20250121' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux
Pull selinux updates from Paul Moore:
- Extended permissions supported in conditional policy
The SELinux extended permissions, aka "xperms", allow security admins
to target individuals ioctls, and recently netlink messages, with
their SELinux policy. Adding support for conditional policies allows
admins to toggle the granular xperms using SELinux booleans, helping
pave the way for greater use of xperms in general purpose SELinux
policies. This change bumps the maximum SELinux policy version to 34.
- Fix a SCTP/SELinux error return code inconsistency
Depending on the loaded SELinux policy, specifically it's
EXTSOCKCLASS support, the bind(2) LSM/SELinux hook could return
different error codes due to the SELinux code checking the socket's
SELinux object class (which can vary depending on EXTSOCKCLASS) and
not the socket's sk_protocol field. We fix this by doing the obvious,
and looking at the sock->sk_protocol field instead of the object
class.
- Makefile fixes to properly cleanup av_permissions.h
Add av_permissions.h to "targets" so that it is properly cleaned up
using the kbuild infrastructure.
- A number of smaller improvements by Christian Göttsche
A variety of straightforward changes to reduce code duplication,
reduce pointer lookups, migrate void pointers to defined types,
simplify code, constify function parameters, and correct iterator
types.
* tag 'selinux-pr-20250121' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux:
selinux: make more use of str_read() when loading the policy
selinux: avoid unnecessary indirection in struct level_datum
selinux: use known type instead of void pointer
selinux: rename comparison functions for clarity
selinux: rework match_ipv6_addrmask()
selinux: constify and reconcile function parameter names
selinux: avoid using types indicating user space interaction
selinux: supply missing field initializers
selinux: add netlink nlmsg_type audit message
selinux: add support for xperms in conditional policies
selinux: Fix SCTP error inconsistency in selinux_socket_bind()
selinux: use native iterator types
selinux: add generated av_permissions.h to targets
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Merge tag 'lsm-pr-20250121' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/lsm
Pull lsm updates from Paul Moore:
- Improved handling of LSM "secctx" strings through lsm_context struct
The LSM secctx string interface is from an older time when only one
LSM was supported, migrate over to the lsm_context struct to better
support the different LSMs we now have and make it easier to support
new LSMs in the future.
These changes explain the Rust, VFS, and networking changes in the
diffstat.
- Only build lsm_audit.c if CONFIG_SECURITY and CONFIG_AUDIT are
enabled
Small tweak to be a bit smarter about when we build the LSM's common
audit helpers.
- Check for absurdly large policies from userspace in SafeSetID
SafeSetID policies rules are fairly small, basically just "UID:UID",
it easy to impose a limit of KMALLOC_MAX_SIZE on policy writes which
helps quiet a number of syzbot related issues. While work is being
done to address the syzbot issues through other mechanisms, this is a
trivial and relatively safe fix that we can do now.
- Various minor improvements and cleanups
A collection of improvements to the kernel selftests, constification
of some function parameters, removing redundant assignments, and
local variable renames to improve readability.
* tag 'lsm-pr-20250121' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/lsm:
lockdown: initialize local array before use to quiet static analysis
safesetid: check size of policy writes
net: corrections for security_secid_to_secctx returns
lsm: rename variable to avoid shadowing
lsm: constify function parameters
security: remove redundant assignment to return variable
lsm: Only build lsm_audit.c if CONFIG_SECURITY and CONFIG_AUDIT are set
selftests: refactor the lsm `flags_overset_lsm_set_self_attr` test
binder: initialize lsm_context structure
rust: replace lsm context+len with lsm_context
lsm: secctx provider check on release
lsm: lsm_context in security_dentry_init_security
lsm: use lsm_context in security_inode_getsecctx
lsm: replace context+len with lsm_context
lsm: ensure the correct LSM context releaser
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Merge tag 'integrity-v6.14' of git://git.kernel.org/pub/scm/linux/kernel/git/zohar/linux-integrity
Pull integrity updates from Mimi Zohar:
"There's just a couple of changes: two kernel messages addressed, a
measurement policy collision addressed, and one policy cleanup.
Please note that the contents of the IMA measurement list is
potentially affected. The builtin tmpfs IMA policy rule change might
introduce additional measurements, while detecting a reboot might
eliminate some measurements"
* tag 'integrity-v6.14' of git://git.kernel.org/pub/scm/linux/kernel/git/zohar/linux-integrity:
ima: ignore suffixed policy rule comments
ima: limit the builtin 'tcb' dont_measure tmpfs policy rule
ima: kexec: silence RCU list traversal warning
ima: Suspend PCR extends and log appends when rebooting
* New
- Support new EC if the memory region information comes from the CRS
ACPI resource descriptor in cros_ec_lpc.
* Improvements
- Make sure EC is in RW before probing.
- Only check events on MKBP notifies to reduce the number of query
commands in cros_ec_lpc.
* Cleanups
- Remove unused code and DT bindings for cros-kbd-led-backlight.
- Constify 'struct bin_attribute' in cros_ec_vbc.
- Use str_enabled_disabled() in cros_usbpd_logger.
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Merge tag 'chrome-platform-v6.14' of git://git.kernel.org/pub/scm/linux/kernel/git/chrome-platform/linux
Pull chrome platform updates from Tzung-Bi Shih:
"New:
- Support new EC if the memory region information comes from the CRS
ACPI resource descriptor in cros_ec_lpc
Improvements:
- Make sure EC is in RW before probing
- Only check events on MKBP notifies to reduce the number of query
commands in cros_ec_lpc
Cleanups:
- Remove unused code and DT bindings for cros-kbd-led-backlight
- Constify 'struct bin_attribute' in cros_ec_vbc
- Use str_enabled_disabled() in cros_usbpd_logger"
* tag 'chrome-platform-v6.14' of git://git.kernel.org/pub/scm/linux/kernel/git/chrome-platform/linux:
platform/chrome: cros_ec_lpc: Handle EC without CRS section
platform/chrome: cros_usbpd_logger: Use str_enabled_disabled() helper
platform/chrome: cros_ec_lpc: Support direct EC register memory access
platform/chrome: cros_ec_lpc: Merge lpc_driver_ops into ec private structure
platform/chrome: Update ChromeOS EC command tracing
platform/chrome: cros_ec_lpc: Only check for events on MKBP notifies
platform/chrome: cros_ec_vbc: Constify 'struct bin_attribute'
dt-bindings: cros-ec: Remove google,cros-kbd-led-backlight
platform/chrome: cros_kbd_led_backlight: Remove OF match
platform/chrome: cros_ec_proto: remove unnecessary retries
platform/chrome: cros_ec: jump to RW before probing
platform/chrome: cros_kbd_led_backlight: remove unneeded if-statement
- Quite a bit of Chinese and Spanish translation work.
- Clarifying that Git commit IDs >12chars are OK
- A new nvme-multipath document
- A reorganization of the admin-guide top-level page to make it readable
- Clarification of the role of Acked-by and maintainer discretion on their
acceptance.
- Some reorganization of debugging-oriented docs.
...and typo fixes, documentation updates, etc. as usual.
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Merge tag 'docs-6.14' of git://git.lwn.net/linux
Pull Documentation updates from Jonathan Corbet:
- Quite a bit of Chinese and Spanish translation work
- Clarifying that Git commit IDs >12chars are OK
- A new nvme-multipath document
- A reorganization of the admin-guide top-level page to make it
readable
- Clarification of the role of Acked-by and maintainer discretion on
their acceptance
- Some reorganization of debugging-oriented docs
... and typo fixes, documentation updates, etc as usual
* tag 'docs-6.14' of git://git.lwn.net/linux: (50 commits)
Documentation: Fix x86_64 UEFI outdated references to elilo
Documentation/sysctl: Add timer_migration to kernel.rst
docs/mm: Physical memory: Remove zone_t
docs: submitting-patches: clarify that signers may use their discretion on tags
docs: submitting-patches: clarify difference between Acked-by and Reviewed-by
docs: submitting-patches: clarify Acked-by and introduce "# Suffix"
Documentation: bug-hunting.rst: remove odd contact information
docs/zh_CN: Add sak index Chinese translation
doc: module: DEFAULT_SYMBOL_NAMESPACE must be defined before #includes
doc: module: Fix documented type of namespace
Documentation/kernel-parameters: Fix a reference to vga-softcursor.rst
docs/zh_CN: Add landlock index Chinese translation
Documentation: Fix typo localmodonfig -> localmodconfig
overlayfs.rst: Fix and improve grammar
docs/zh_CN: Add siphash index Chinese translation
docs/zh_CN: Add security IMA-templates Chinese translation
docs/zh_CN: Add security digsig Chinese translation
Align git commit ID abbreviation guidelines and checks
docs: process: submitting-patches: split canonical patch format section
docs/zh_CN: Add security lsm Chinese translation
...
Toolchain and infrastructure:
- Finish the move to custom FFI integer types started in the previous
cycle and finally map 'long' to 'isize' and 'char' to 'u8'. Do a few
cleanups on top thanks to that.
- Start to use 'derive(CoercePointee)' on Rust >= 1.84.0.
This is a major milestone on the path to build the kernel using only
stable Rust features. In particular, previously we were using the
unstable features 'coerce_unsized', 'dispatch_from_dyn' and 'unsize',
and now we will use the new 'derive_coerce_pointee' one, which is on
track to stabilization. This new feature is a macro that essentially
expands into code that internally uses the unstable features that we
were using before, without having to expose those.
With it, stable Rust users, including the kernel, will be able to
build custom smart pointers that work with trait objects, e.g.:
fn f(p: &Arc<dyn Display>) {
pr_info!("{p}\n");
}
let a: Arc<dyn Display> = Arc::new(42i32, GFP_KERNEL)?;
let b: Arc<dyn Display> = Arc::new("hello there", GFP_KERNEL)?;
f(&a); // Prints "42".
f(&b); // Prints "hello there".
Together with the 'arbitrary_self_types' feature that we started
using in the previous cycle, using our custom smart pointers like
'Arc' will eventually only rely in stable Rust.
- Introduce 'PROCMACROLDFLAGS' environment variable to allow to link
Rust proc macros using different flags than those used for linking
Rust host programs (e.g. when 'rustc' uses a different C library
than the host programs' one), which Android needs.
- Help kernel builds under macOS with Rust enabled by accomodating
other naming conventions for dynamic libraries (i.e. '.so' vs.
'.dylib') which are used for Rust procedural macros. The actual
support for macOS (i.e. the rest of the pieces needed) is provided
out-of-tree by others, following the policy used for other parts of
the kernel by Kbuild.
- Run Clippy for 'rusttest' code too and clean the bits it spotted.
- Provide Clippy with the minimum supported Rust version to improve
the suggestions it gives.
- Document 'bindgen' 0.71.0 regression.
'kernel' crate:
- 'build_error!': move users of the hidden function to the documented
macro, prevent such uses in the future by moving the function
elsewhere and add the macro to the prelude.
- 'types' module: add improved version of 'ForeignOwnable::borrow_mut'
(which was removed in the past since it was problematic); change
'ForeignOwnable' pointer type to '*mut'.
- 'alloc' module: implement 'Display' for 'Box' and align the 'Debug'
implementation to it; add example (doctest) for 'ArrayLayout::new()'.
- 'sync' module: document 'PhantomData' in 'Arc'; use
'NonNull::new_unchecked' in 'ForeignOwnable for Arc' impl.
- 'uaccess' module: accept 'Vec's with different allocators in
'UserSliceReader::read_all'.
- 'workqueue' module: enable run-testing a couple more doctests.
- 'error' module: simplify 'from_errno()'.
- 'block' module: fix formatting in code documentation (a lint to catch
these is being implemented).
- Avoid 'unwrap()'s in doctests, which also improves the examples by
showing how kernel code is supposed to be written.
- Avoid 'as' casts with 'cast{,_mut}' calls which are a bit safer.
And a few other cleanups.
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Merge tag 'rust-6.14' of git://git.kernel.org/pub/scm/linux/kernel/git/ojeda/linux
Pull rust updates from Miguel Ojeda:
"Toolchain and infrastructure:
- Finish the move to custom FFI integer types started in the previous
cycle and finally map 'long' to 'isize' and 'char' to 'u8'. Do a
few cleanups on top thanks to that.
- Start to use 'derive(CoercePointee)' on Rust >= 1.84.0.
This is a major milestone on the path to build the kernel using
only stable Rust features. In particular, previously we were using
the unstable features 'coerce_unsized', 'dispatch_from_dyn' and
'unsize', and now we will use the new 'derive_coerce_pointee' one,
which is on track to stabilization. This new feature is a macro
that essentially expands into code that internally uses the
unstable features that we were using before, without having to
expose those.
With it, stable Rust users, including the kernel, will be able to
build custom smart pointers that work with trait objects, e.g.:
fn f(p: &Arc<dyn Display>) {
pr_info!("{p}\n");
}
let a: Arc<dyn Display> = Arc::new(42i32, GFP_KERNEL)?;
let b: Arc<dyn Display> = Arc::new("hello there", GFP_KERNEL)?;
f(&a); // Prints "42".
f(&b); // Prints "hello there".
Together with the 'arbitrary_self_types' feature that we started
using in the previous cycle, using our custom smart pointers like
'Arc' will eventually only rely in stable Rust.
- Introduce 'PROCMACROLDFLAGS' environment variable to allow to link
Rust proc macros using different flags than those used for linking
Rust host programs (e.g. when 'rustc' uses a different C library
than the host programs' one), which Android needs.
- Help kernel builds under macOS with Rust enabled by accomodating
other naming conventions for dynamic libraries (i.e. '.so' vs.
'.dylib') which are used for Rust procedural macros. The actual
support for macOS (i.e. the rest of the pieces needed) is provided
out-of-tree by others, following the policy used for other parts of
the kernel by Kbuild.
- Run Clippy for 'rusttest' code too and clean the bits it spotted.
- Provide Clippy with the minimum supported Rust version to improve
the suggestions it gives.
- Document 'bindgen' 0.71.0 regression.
'kernel' crate:
- 'build_error!': move users of the hidden function to the documented
macro, prevent such uses in the future by moving the function
elsewhere and add the macro to the prelude.
- 'types' module: add improved version of 'ForeignOwnable::borrow_mut'
(which was removed in the past since it was problematic); change
'ForeignOwnable' pointer type to '*mut'.
- 'alloc' module: implement 'Display' for 'Box' and align the 'Debug'
implementation to it; add example (doctest) for 'ArrayLayout::new()'
- 'sync' module: document 'PhantomData' in 'Arc'; use
'NonNull::new_unchecked' in 'ForeignOwnable for Arc' impl.
- 'uaccess' module: accept 'Vec's with different allocators in
'UserSliceReader::read_all'.
- 'workqueue' module: enable run-testing a couple more doctests.
- 'error' module: simplify 'from_errno()'.
- 'block' module: fix formatting in code documentation (a lint to catch
these is being implemented).
- Avoid 'unwrap()'s in doctests, which also improves the examples by
showing how kernel code is supposed to be written.
- Avoid 'as' casts with 'cast{,_mut}' calls which are a bit safer.
And a few other cleanups"
* tag 'rust-6.14' of git://git.kernel.org/pub/scm/linux/kernel/git/ojeda/linux: (32 commits)
kbuild: rust: add PROCMACROLDFLAGS
rust: uaccess: generalize userSliceReader to support any Vec
rust: kernel: add improved version of `ForeignOwnable::borrow_mut`
rust: kernel: reorder `ForeignOwnable` items
rust: kernel: change `ForeignOwnable` pointer to mut
rust: arc: split unsafe block, add missing comment
rust: types: avoid `as` casts
rust: arc: use `NonNull::new_unchecked`
rust: use derive(CoercePointee) on rustc >= 1.84.0
rust: alloc: add doctest for `ArrayLayout::new()`
rust: init: update `stack_try_pin_init` examples
rust: error: import `kernel`'s `LayoutError` instead of `core`'s
rust: str: replace unwraps with question mark operators
rust: page: remove unnecessary helper function from doctest
rust: rbtree: remove unwrap in asserts
rust: init: replace unwraps with question mark operators
rust: use host dylib naming convention to support macOS
rust: add `build_error!` to the prelude
rust: kernel: move `build_error` hidden function to prevent mistakes
rust: use the `build_error!` macro, not the hidden function
...
1) Per-CPU kthreads must stay affine to a single CPU and never execute
relevant code on any other CPU. This is currently handled by smpboot
code which takes care of CPU-hotplug operations. Affinity here is
a correctness constraint.
2) Some kthreads _have_ to be affine to a specific set of CPUs and can't
run anywhere else. The affinity is set through kthread_bind_mask()
and the subsystem takes care by itself to handle CPU-hotplug
operations. Affinity here is assumed to be a correctness constraint.
3) Per-node kthreads _prefer_ to be affine to a specific NUMA node. This
is not a correctness constraint but merely a preference in terms of
memory locality. kswapd and kcompactd both fall into this category.
The affinity is set manually like for any other task and CPU-hotplug
is supposed to be handled by the relevant subsystem so that the task
is properly reaffined whenever a given CPU from the node comes up.
Also care should be taken so that the node affinity doesn't cross
isolated (nohz_full) cpumask boundaries.
4) Similar to the previous point except kthreads have a _preferred_
affinity different than a node. Both RCU boost kthreads and RCU
exp kworkers fall into this category as they refer to "RCU nodes"
from a distinctly distributed tree.
Currently the preferred affinity patterns (3 and 4) have at least 4
identified users, with more or less success when it comes to handle
CPU-hotplug operations and CPU isolation. Each of which do it in its own
ad-hoc way.
This is an infrastructure proposal to handle this with the following API
changes:
_ kthread_create_on_node() automatically affines the created kthread to
its target node unless it has been set as per-cpu or bound with
kthread_bind[_mask]() before the first wake-up.
- kthread_affine_preferred() is a new function that can be called right
after kthread_create_on_node() to specify a preferred affinity
different than the specified node.
When the preferred affinity can't be applied because the possible
targets are offline or isolated (nohz_full), the kthread is affine
to the housekeeping CPUs (which means to all online CPUs most of the
time or only the non-nohz_full CPUs when nohz_full= is set).
kswapd, kcompactd, RCU boost kthreads and RCU exp kworkers have been
converted, along with a few old drivers.
Summary of the changes:
* Consolidate a bunch of ad-hoc implementations of kthread_run_on_cpu()
* Introduce task_cpu_fallback_mask() that defines the default last
resort affinity of a task to become nohz_full aware
* Add some correctness check to ensure kthread_bind() is always called
before the first kthread wake up.
* Default affine kthread to its preferred node.
* Convert kswapd / kcompactd and remove their halfway working ad-hoc
affinity implementation
* Implement kthreads preferred affinity
* Unify kthread worker and kthread API's style
* Convert RCU kthreads to the new API and remove the ad-hoc affinity
implementation.
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Merge tag 'kthread-for-6.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/frederic/linux-dynticks
Pull kthread updates from Frederic Weisbecker:
"Kthreads affinity follow either of 4 existing different patterns:
1) Per-CPU kthreads must stay affine to a single CPU and never
execute relevant code on any other CPU. This is currently handled
by smpboot code which takes care of CPU-hotplug operations.
Affinity here is a correctness constraint.
2) Some kthreads _have_ to be affine to a specific set of CPUs and
can't run anywhere else. The affinity is set through
kthread_bind_mask() and the subsystem takes care by itself to
handle CPU-hotplug operations. Affinity here is assumed to be a
correctness constraint.
3) Per-node kthreads _prefer_ to be affine to a specific NUMA node.
This is not a correctness constraint but merely a preference in
terms of memory locality. kswapd and kcompactd both fall into this
category. The affinity is set manually like for any other task and
CPU-hotplug is supposed to be handled by the relevant subsystem so
that the task is properly reaffined whenever a given CPU from the
node comes up. Also care should be taken so that the node affinity
doesn't cross isolated (nohz_full) cpumask boundaries.
4) Similar to the previous point except kthreads have a _preferred_
affinity different than a node. Both RCU boost kthreads and RCU
exp kworkers fall into this category as they refer to "RCU nodes"
from a distinctly distributed tree.
Currently the preferred affinity patterns (3 and 4) have at least 4
identified users, with more or less success when it comes to handle
CPU-hotplug operations and CPU isolation. Each of which do it in its
own ad-hoc way.
This is an infrastructure proposal to handle this with the following
API changes:
- kthread_create_on_node() automatically affines the created kthread
to its target node unless it has been set as per-cpu or bound with
kthread_bind[_mask]() before the first wake-up.
- kthread_affine_preferred() is a new function that can be called
right after kthread_create_on_node() to specify a preferred
affinity different than the specified node.
When the preferred affinity can't be applied because the possible
targets are offline or isolated (nohz_full), the kthread is affine to
the housekeeping CPUs (which means to all online CPUs most of the time
or only the non-nohz_full CPUs when nohz_full= is set).
kswapd, kcompactd, RCU boost kthreads and RCU exp kworkers have been
converted, along with a few old drivers.
Summary of the changes:
- Consolidate a bunch of ad-hoc implementations of
kthread_run_on_cpu()
- Introduce task_cpu_fallback_mask() that defines the default last
resort affinity of a task to become nohz_full aware
- Add some correctness check to ensure kthread_bind() is always
called before the first kthread wake up.
- Default affine kthread to its preferred node.
- Convert kswapd / kcompactd and remove their halfway working ad-hoc
affinity implementation
- Implement kthreads preferred affinity
- Unify kthread worker and kthread API's style
- Convert RCU kthreads to the new API and remove the ad-hoc affinity
implementation"
* tag 'kthread-for-6.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/frederic/linux-dynticks:
kthread: modify kernel-doc function name to match code
rcu: Use kthread preferred affinity for RCU exp kworkers
treewide: Introduce kthread_run_worker[_on_cpu]()
kthread: Unify kthread_create_on_cpu() and kthread_create_worker_on_cpu() automatic format
rcu: Use kthread preferred affinity for RCU boost
kthread: Implement preferred affinity
mm: Create/affine kswapd to its preferred node
mm: Create/affine kcompactd to its preferred node
kthread: Default affine kthread to its preferred NUMA node
kthread: Make sure kthread hasn't started while binding it
sched,arm64: Handle CPU isolation on last resort fallback rq selection
arm64: Exclude nohz_full CPUs from 32bits el0 support
lib: test_objpool: Use kthread_run_on_cpu()
kallsyms: Use kthread_run_on_cpu()
soc/qman: test: Use kthread_run_on_cpu()
arm/bL_switcher: Use kthread_run_on_cpu()
core:
- device memory cgroup controller added
- Remove driver date from drm_driver
- Add drm_printer based hex dumper
- drm memory stats docs update
- scheduler documentation improvements
new driver:
- amdxdna - Ryzen AI NPU support
connector:
- add a mutex to protect ELD
- make connector setup two-step
panels:
- Introduce backlight quirks infrastructure
- New panels: KDB KD116N2130B12, Tianma TM070JDHG34-00,
- Multi-Inno Technology MI1010Z1T-1CP11
bridge:
- ti-sn65dsi83: Add ti,lvds-vod-swing optional properties
- Provide default implementation of atomic_check for HDMI bridges
- it605: HDCP improvements, MCCS Support
xe:
- make OA buffer size configurable
- GuC capture fixes
- add ufence and g2h flushes
- restore system memory GGTT mappings
- ioctl fixes
- SRIOV PF scheduling priority
- allow fault injection
- lots of improvements/refactors
- Enable GuC's WA_DUAL_QUEUE for newer platforms
- IRQ related fixes and improvements
i915:
- More accurate engine busyness metrics with GuC submission
- Ensure partial BO segment offset never exceeds allowed max
- Flush GuC CT receive tasklet during reset preparation
- Some DG2 refactor to fix DG2 bugs when operating with certain CPUs
- Fix DG1 power gate sequence
- Enabling uncompressed 128b/132b UHBR SST
- Handle hdmi connector init failures, and no HDMI/DP cases
- More robust engine resets on Haswell and older
i915/xe display:
- HDCP fixes for Xe3Lpd
- New GSC FW ARL-H/ARL-U
- support 3 VDSC engines 12 slices
- MBUS joining sanitisation
- reconcile i915/xe display power mgmt
- Xe3Lpd fixes
- UHBR rates for Thunderbolt
amdgpu:
- DRM panic support
- track BO memory stats at runtime
- Fix max surface handling in DC
- Cleaner shader support for gfx10.3 dGPUs
- fix drm buddy trim handling
- SDMA engine reset updates
- Fix doorbell ttm cleanup
- RAS updates
- ISP updates
- SDMA queue reset support
- Rework DPM powergating interfaces
- Documentation updates and cleanups
- DCN 3.5 updates
- Use a pm notifier to more gracefully handle VRAM eviction on suspend or hibernate
- Add debugfs interfaces for forcing scheduling to specific engine instances
- GG 9.5 updates
- IH 4.4 updates
- Make missing optional firmware less noisy
- PSP 13.x updates
- SMU 13.x updates
- VCN 5.x updates
- JPEG 5.x updates
- GC 12.x updates
- DC FAMS updates
amdkfd:
- GG 9.5 updates
- Logging improvements
- Shader debugger fixes
- Trap handler cleanup
- Cleanup includes
- Eviction fence wq fix
msm:
- MDSS:
- properly described UBWC registers
- added SM6150 (aka QCS615) support
- DPU:
- added SM6150 (aka QCS615) support
- enabled wide planes if virtual planes are enabled (by using two SSPPs for a single plane)
- added CWB hardware blocks support
- DSI:
- added SM6150 (aka QCS615) support
- GPU:
- Print GMU core fw version
- GMU bandwidth voting for a740 and a750
- Expose uche trap base via uapi
- UAPI error reporting
rcar-du:
- Add r8a779h0 Support
ivpu:
- Fix qemu crash when using passthrough
nouveau:
- expose GSP-RM logging buffers via debugfs
panfrost:
- Add MT8188 Mali-G57 MC3 support
rockchip:
- Gamma LUT support
hisilicon:
- new HIBMC support
virtio-gpu:
- convert to helpers
- add prime support for scanout buffers
v3d:
- Add DRM_IOCTL_V3D_PERFMON_SET_GLOBAL
vc4:
- Add support for BCM2712
vkms:
- line-per-line compositing algorithm to improve performance
zynqmp:
- Add DP audio support
mediatek:
- dp: Add sdp path reset
- dp: Support flexible length of DP calibration data
etnaviv:
- add fdinfo memory support
- add explicit reset handling
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Merge tag 'drm-next-2025-01-17' of https://gitlab.freedesktop.org/drm/kernel
Pull drm updates from Dave Airlie:
"There are two external interactions of note, the msm tree pull in some
opp tree, hopefully the opp tree arrives from the same git tree
however it normally does.
There is also a new cgroup controller for device memory, that is used
by drm, so is merging through my tree. This will hopefully help open
up gpu cgroup usage a bit more and move us forward.
There is a new accelerator driver for the AMD XDNA Ryzen AI NPUs.
Then the usual xe/amdgpu/i915/msm leaders and lots of changes and
refactors across the board:
core:
- device memory cgroup controller added
- Remove driver date from drm_driver
- Add drm_printer based hex dumper
- drm memory stats docs update
- scheduler documentation improvements
new driver:
- amdxdna - Ryzen AI NPU support
connector:
- add a mutex to protect ELD
- make connector setup two-step
panels:
- Introduce backlight quirks infrastructure
- New panels: KDB KD116N2130B12, Tianma TM070JDHG34-00,
- Multi-Inno Technology MI1010Z1T-1CP11
bridge:
- ti-sn65dsi83: Add ti,lvds-vod-swing optional properties
- Provide default implementation of atomic_check for HDMI bridges
- it605: HDCP improvements, MCCS Support
xe:
- make OA buffer size configurable
- GuC capture fixes
- add ufence and g2h flushes
- restore system memory GGTT mappings
- ioctl fixes
- SRIOV PF scheduling priority
- allow fault injection
- lots of improvements/refactors
- Enable GuC's WA_DUAL_QUEUE for newer platforms
- IRQ related fixes and improvements
i915:
- More accurate engine busyness metrics with GuC submission
- Ensure partial BO segment offset never exceeds allowed max
- Flush GuC CT receive tasklet during reset preparation
- Some DG2 refactor to fix DG2 bugs when operating with certain CPUs
- Fix DG1 power gate sequence
- Enabling uncompressed 128b/132b UHBR SST
- Handle hdmi connector init failures, and no HDMI/DP cases
- More robust engine resets on Haswell and older
i915/xe display:
- HDCP fixes for Xe3Lpd
- New GSC FW ARL-H/ARL-U
- support 3 VDSC engines 12 slices
- MBUS joining sanitisation
- reconcile i915/xe display power mgmt
- Xe3Lpd fixes
- UHBR rates for Thunderbolt
amdgpu:
- DRM panic support
- track BO memory stats at runtime
- Fix max surface handling in DC
- Cleaner shader support for gfx10.3 dGPUs
- fix drm buddy trim handling
- SDMA engine reset updates
- Fix doorbell ttm cleanup
- RAS updates
- ISP updates
- SDMA queue reset support
- Rework DPM powergating interfaces
- Documentation updates and cleanups
- DCN 3.5 updates
- Use a pm notifier to more gracefully handle VRAM eviction on
suspend or hibernate
- Add debugfs interfaces for forcing scheduling to specific engine
instances
- GG 9.5 updates
- IH 4.4 updates
- Make missing optional firmware less noisy
- PSP 13.x updates
- SMU 13.x updates
- VCN 5.x updates
- JPEG 5.x updates
- GC 12.x updates
- DC FAMS updates
amdkfd:
- GG 9.5 updates
- Logging improvements
- Shader debugger fixes
- Trap handler cleanup
- Cleanup includes
- Eviction fence wq fix
msm:
- MDSS:
- properly described UBWC registers
- added SM6150 (aka QCS615) support
- DPU:
- added SM6150 (aka QCS615) support
- enabled wide planes if virtual planes are enabled (by using two
SSPPs for a single plane)
- added CWB hardware blocks support
- DSI:
- added SM6150 (aka QCS615) support
- GPU:
- Print GMU core fw version
- GMU bandwidth voting for a740 and a750
- Expose uche trap base via uapi
- UAPI error reporting
rcar-du:
- Add r8a779h0 Support
ivpu:
- Fix qemu crash when using passthrough
nouveau:
- expose GSP-RM logging buffers via debugfs
panfrost:
- Add MT8188 Mali-G57 MC3 support
rockchip:
- Gamma LUT support
hisilicon:
- new HIBMC support
virtio-gpu:
- convert to helpers
- add prime support for scanout buffers
v3d:
- Add DRM_IOCTL_V3D_PERFMON_SET_GLOBAL
vc4:
- Add support for BCM2712
vkms:
- line-per-line compositing algorithm to improve performance
zynqmp:
- Add DP audio support
mediatek:
- dp: Add sdp path reset
- dp: Support flexible length of DP calibration data
etnaviv:
- add fdinfo memory support
- add explicit reset handling"
* tag 'drm-next-2025-01-17' of https://gitlab.freedesktop.org/drm/kernel: (1070 commits)
drm/bridge: fix documentation for the hdmi_audio_prepare() callback
doc/cgroup: Fix title underline length
drm/doc: Include new drm-compute documentation
cgroup/dmem: Fix parameters documentation
cgroup/dmem: Select PAGE_COUNTER
kernel/cgroup: Remove the unused variable climit
drm/display: hdmi: Do not read EDID on disconnected connectors
drm/tests: hdmi: Add connector disablement test
drm/connector: hdmi: Do atomic check when necessary
drm/amd/display: 3.2.316
drm/amd/display: avoid reset DTBCLK at clock init
drm/amd/display: improve dpia pre-train
drm/amd/display: Apply DML21 Patches
drm/amd/display: Use HW lock mgr for PSR1
drm/amd/display: Revised for Replay Pseudo vblank control
drm/amd/display: Add a new flag for replay low hz
drm/amd/display: Remove unused read_ono_state function from Hwss module
drm/amd/display: Do not elevate mem_type change to full update
drm/amd/display: Do not wait for PSR disable on vbl enable
drm/amd/display: Remove unnecessary eDP power down
...
The sorttable.c was a copy from recordmcount.c which is very hard to
maintain. That's because it uses macro helpers and places the code in a
header file sorttable.h to handle both the 64 bit and 32 bit version of
the Elf structures. It also uses _r()/r()/r2() wrappers around accessing
the data which will read the 64 bit or 32 bit version of the data as well
as handle endianess. If the wrong wrapper is used, an invalid value will
result, and this has been a cause for bugs in the past. In fact the new
ORC code doesn't even use it. That's fine because ORC is only for 64 bit
x86 which is the default parsing.
Instead of having a bunch of macros defined and then include the code
twice from a header, the Elf structures are each wrapped in a union. The
union holds the 64 bit and 32 bit version of the needed structure. Then
a structure of function pointers is used, along with helper macros
to access the ELF types appropriately for their byte size and endianess.
How to reference the data fields is moved from the code that implements
the sorting to the helper functions where all accesses to a field will
use he same helper function. As long as the helper functions access
the fields correctly, the code will also access the fields. This is
an improvement over having to code implementing the sorting having to
make sure it always uses the right accessor function when reading an
ELF field.
This is a clean up only, the functionality of the scripts/sorttable.c
does not change.
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Merge tag 'trace-sorttable-v6.14' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
Pull scipts/sorttable updates from Steven Rostedt:
"The sorttable.c was a copy from recordmcount.c which is very hard to
maintain. That's because it uses macro helpers and places the code in
a header file sorttable.h to handle both the 64 bit and 32 bit version
of the Elf structures. It also uses _r()/r()/r2() wrappers around
accessing the data which will read the 64 bit or 32 bit version of the
data as well as handle endianess. If the wrong wrapper is used, an
invalid value will result, and this has been a cause for bugs in the
past. In fact the new ORC code doesn't even use it. That's fine
because ORC is only for 64 bit x86 which is the default parsing.
Instead of having a bunch of macros defined and then include the code
twice from a header, the Elf structures are each wrapped in a union.
The union holds the 64 bit and 32 bit version of the needed structure.
Then a structure of function pointers is used, along with helper
macros to access the ELF types appropriately for their byte size and
endianess. How to reference the data fields is moved from the code
that implements the sorting to the helper functions where all accesses
to a field will use he same helper function. As long as the helper
functions access the fields correctly, the code will also access the
fields. This is an improvement over having to code implementing the
sorting having to make sure it always uses the right accessor function
when reading an ELF field.
This is a clean up only, the functionality of the scripts/sorttable.c
does not change"
* tag 'trace-sorttable-v6.14' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
scripts/sorttable: Use a structure of function pointers for elf helpers
scripts/sorttable: Get start/stop_mcount_loc from ELF file directly
scripts/sorttable: Move code from sorttable.h into sorttable.c
scripts/sorttable: Use uint64_t for mcount sorting
scripts/sorttable: Add helper functions for Elf_Sym
scripts/sorttable: Add helper functions for Elf_Shdr
scripts/sorttable: Add helper functions for Elf_Ehdr
scripts/sorttable: Convert Elf_Sym MACRO over to a union
scripts/sorttable: Replace Elf_Shdr Macro with a union
scripts/sorttable: Convert Elf_Ehdr to union
scripts/sorttable: Make compare_extable() into two functions
scripts/sorttable: Have the ORC code use the _r() functions to read
scripts/sorttable: Remove unneeded Elf_Rel
scripts/sorttable: Remove unused write functions
scripts/sorttable: Remove unused macro defines
- Have fprobes built on top of function graph infrastructure
The fprobe logic is an optimized kprobe that uses ftrace to attach to
functions when a probe is needed at the start or end of the function. The
fprobe and kretprobe logic implements a similar method as the function
graph tracer to trace the end of the function. That is to hijack the
return address and jump to a trampoline to do the trace when the function
exits. To do this, a shadow stack needs to be created to store the
original return address. Fprobes and function graph do this slightly
differently. Fprobes (and kretprobes) has slots per callsite that are
reserved to save the return address. This is fine when just a few points
are traced. But users of fprobes, such as BPF programs, are starting to add
many more locations, and this method does not scale.
The function graph tracer was created to trace all functions in the
kernel. In order to do this, when function graph tracing is started, every
task gets its own shadow stack to hold the return address that is going to
be traced. The function graph tracer has been updated to allow multiple
users to use its infrastructure. Now have fprobes be one of those users.
This will also allow for the fprobe and kretprobe methods to trace the
return address to become obsolete. With new technologies like CFI that
need to know about these methods of hijacking the return address, going
toward a solution that has only one method of doing this will make the
kernel less complex.
- Cleanup with guard() and free() helpers
There were several places in the code that had a lot of "goto out" in the
error paths to either unlock a lock or free some memory that was
allocated. But this is error prone. Convert the code over to use the
guard() and free() helpers that let the compiler unlock locks or free
memory when the function exits.
- Remove disabling of interrupts in the function graph tracer
When function graph tracer was first introduced, it could race with
interrupts and NMIs. To prevent that race, it would disable interrupts and
not trace NMIs. But the code has changed to allow NMIs and also
interrupts. This change was done a long time ago, but the disabling of
interrupts was never removed. Remove the disabling of interrupts in the
function graph tracer is it is not needed. This greatly improves its
performance.
- Allow the :mod: command to enable tracing module functions on the kernel
command line.
The function tracer already has a way to enable functions to be traced in
modules by writing ":mod:<module>" into set_ftrace_filter. That will
enable either all the functions for the module if it is loaded, or if it
is not, it will cache that command, and when the module is loaded that
matches <module>, its functions will be enabled. This also allows init
functions to be traced. But currently events do not have that feature.
Because enabling function tracing can be done very early at boot up
(before scheduling is enabled), the commands that can be done when
function tracing is started is limited. Having the ":mod:" command to
trace module functions as they are loaded is very useful. Update the
kernel command line function filtering to allow it.
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Merge tag 'ftrace-v6.14' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
Pull ftrace updates from Steven Rostedt:
- Have fprobes built on top of function graph infrastructure
The fprobe logic is an optimized kprobe that uses ftrace to attach to
functions when a probe is needed at the start or end of the function.
The fprobe and kretprobe logic implements a similar method as the
function graph tracer to trace the end of the function. That is to
hijack the return address and jump to a trampoline to do the trace
when the function exits. To do this, a shadow stack needs to be
created to store the original return address. Fprobes and function
graph do this slightly differently. Fprobes (and kretprobes) has
slots per callsite that are reserved to save the return address. This
is fine when just a few points are traced. But users of fprobes, such
as BPF programs, are starting to add many more locations, and this
method does not scale.
The function graph tracer was created to trace all functions in the
kernel. In order to do this, when function graph tracing is started,
every task gets its own shadow stack to hold the return address that
is going to be traced. The function graph tracer has been updated to
allow multiple users to use its infrastructure. Now have fprobes be
one of those users. This will also allow for the fprobe and kretprobe
methods to trace the return address to become obsolete. With new
technologies like CFI that need to know about these methods of
hijacking the return address, going toward a solution that has only
one method of doing this will make the kernel less complex.
- Cleanup with guard() and free() helpers
There were several places in the code that had a lot of "goto out" in
the error paths to either unlock a lock or free some memory that was
allocated. But this is error prone. Convert the code over to use the
guard() and free() helpers that let the compiler unlock locks or free
memory when the function exits.
- Remove disabling of interrupts in the function graph tracer
When function graph tracer was first introduced, it could race with
interrupts and NMIs. To prevent that race, it would disable
interrupts and not trace NMIs. But the code has changed to allow NMIs
and also interrupts. This change was done a long time ago, but the
disabling of interrupts was never removed. Remove the disabling of
interrupts in the function graph tracer is it is not needed. This
greatly improves its performance.
- Allow the :mod: command to enable tracing module functions on the
kernel command line.
The function tracer already has a way to enable functions to be
traced in modules by writing ":mod:<module>" into set_ftrace_filter.
That will enable either all the functions for the module if it is
loaded, or if it is not, it will cache that command, and when the
module is loaded that matches <module>, its functions will be
enabled. This also allows init functions to be traced. But currently
events do not have that feature.
Because enabling function tracing can be done very early at boot up
(before scheduling is enabled), the commands that can be done when
function tracing is started is limited. Having the ":mod:" command to
trace module functions as they are loaded is very useful. Update the
kernel command line function filtering to allow it.
* tag 'ftrace-v6.14' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace: (26 commits)
ftrace: Implement :mod: cache filtering on kernel command line
tracing: Adopt __free() and guard() for trace_fprobe.c
bpf: Use ftrace_get_symaddr() for kprobe_multi probes
ftrace: Add ftrace_get_symaddr to convert fentry_ip to symaddr
Documentation: probes: Update fprobe on function-graph tracer
selftests/ftrace: Add a test case for repeating register/unregister fprobe
selftests: ftrace: Remove obsolate maxactive syntax check
tracing/fprobe: Remove nr_maxactive from fprobe
fprobe: Add fprobe_header encoding feature
fprobe: Rewrite fprobe on function-graph tracer
s390/tracing: Enable HAVE_FTRACE_GRAPH_FUNC
ftrace: Add CONFIG_HAVE_FTRACE_GRAPH_FUNC
bpf: Enable kprobe_multi feature if CONFIG_FPROBE is enabled
tracing/fprobe: Enable fprobe events with CONFIG_DYNAMIC_FTRACE_WITH_ARGS
tracing: Add ftrace_fill_perf_regs() for perf event
tracing: Add ftrace_partial_regs() for converting ftrace_regs to pt_regs
fprobe: Use ftrace_regs in fprobe exit handler
fprobe: Use ftrace_regs in fprobe entry handler
fgraph: Pass ftrace_regs to retfunc
fgraph: Replace fgraph_ret_regs with ftrace_regs
...
- Clean up the __rb_map_vma() logic
The logic of __rb_map_vma() has a error check with WARN_ON() that makes
sure that the index does not go past the end of the array of buffers. The
test in the loop pretty much guarantees that it will never happen, but
since the relation of the variables used is a little complex, the
WARN_ON() check was added. It was noticed that the array was dereferenced
before this check and if the logic does break and for some reason the
logic goes past the array, there will be an out of bounds access here.
Move the access to after the WARN_ON().
- Consolidate how the ring buffer is determined to be empty
Currently there's two ways that are used to determine if the ring buffer
is empty. One relies on the status of the commit and reader pages and what
was read, and the other is on what was written vs what was read. By using
the number of entries (written) method, it can be used for reading events
that are out of the kernel's control (what pKVM will use). Move to this
method to make it easier to implement a pKVM ring buffer that the kernel
can read.
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Merge tag 'trace-ringbuffer-v6.14' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
Pull trace ring-buffer updates from Steven Rostedt:
- Clean up the __rb_map_vma() logic
The logic of __rb_map_vma() has a error check with WARN_ON() that
makes sure that the index does not go past the end of the array of
buffers. The test in the loop pretty much guarantees that it will
never happen, but since the relation of the variables used is a
little complex, the WARN_ON() check was added. It was noticed that
the array was dereferenced before this check and if the logic does
break and for some reason the logic goes past the array, there will
be an out of bounds access here. Move the access to after the
WARN_ON().
- Consolidate how the ring buffer is determined to be empty
Currently there's two ways that are used to determine if the ring
buffer is empty. One relies on the status of the commit and reader
pages and what was read, and the other is on what was written vs what
was read. By using the number of entries (written) method, it can be
used for reading events that are out of the kernel's control (what
pKVM will use). Move to this method to make it easier to implement a
pKVM ring buffer that the kernel can read.
* tag 'trace-ringbuffer-v6.14' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
ring-buffer: Make reading page consistent with the code logic
ring-buffer: Check for empty ring-buffer with rb_num_of_entries()
This pull request contains the following branches:
fixes.2024.12.14a: Misc fixes, check if IRQs are disabled in rcu_exp_need_qs(),
instrument KCSAN exclusive-writer assertions, add extra WARN_ON_ONCE() check,
set the cpu_no_qs.b.exp under lock, warn if callback enqueued on offline CPU.
rcutorture.2024.12.14a: Torture-test updates, add rcutorture.preempt_duration kernel
module parameter, make the TREE03 scenario do preemption, improve pooling timeouts
for rcu_torture_writer(), improve output of "Failure/close-call rcutorture reader
segments", add some reader-state debugging checks, update doc of polled APIs, add
extra diagnostics for per-reader-segment preemption.
srcu.2024.12.14a: SRCU updates, improve doc for srcu_read_lock() in terms of return
value, fix typo in comments, remove redundant GP sequence checks in the
srcu_funnel_gp_start.
torture-test.2024.12.14a: Add an extra test for sched_clock(), improve testing
on unresponsive systems.
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Merge tag 'rcu.release.v6.14' of git://git.kernel.org/pub/scm/linux/kernel/git/rcu/linux
Pull RCU updates from Uladzislau Rezki:
"Misc fixes:
- check if IRQs are disabled in rcu_exp_need_qs()
- instrument KCSAN exclusive-writer assertions
- add extra WARN_ON_ONCE() check
- set the cpu_no_qs.b.exp under lock
- warn if callback enqueued on offline CPU
Torture-test updates:
- add rcutorture.preempt_duration kernel module parameter
- make the TREE03 scenario do preemption
- improve pooling timeouts for rcu_torture_writer()
- improve output of "Failure/close-call rcutorture reader segments"
- add some reader-state debugging checks
- update doc of polled APIs
- add extra diagnostics for per-reader-segment preemption
- add an extra test for sched_clock()
- improve testing on unresponsive systems
SRCU updates:
- improve doc for srcu_read_lock() in terms of return value
- fix typo in comments
- remove redundant GP sequence checks in the srcu_funnel_gp_start"
* tag 'rcu.release.v6.14' of git://git.kernel.org/pub/scm/linux/kernel/git/rcu/linux: (31 commits)
srcu: Remove redundant GP sequence checks in srcu_funnel_gp_start
srcu: Fix typo s/srcu_check_read_flavor()/__srcu_check_read_flavor()/
srcu: Guarantee non-negative return value from srcu_read_lock()
MAINTAINERS: Update RCU git tree
rcu: Add lockdep_assert_irqs_disabled() to rcu_exp_need_qs()
rcu: Add KCSAN exclusive-writer assertions for rdp->cpu_no_qs.b.exp
rcu: Make preemptible rcu_exp_handler() check idempotency
rcu: Replace open-coded rcu_exp_need_qs() from rcu_exp_handler() with call
rcu: Move rcu_report_exp_rdp() setting of ->cpu_no_qs.b.exp under lock
rcu: Make rcu_report_exp_cpu_mult() caller acquire lock
rcu: Report callbacks enqueued on offline CPU blind spot
rcutorture: Use symbols for SRCU reader flavors
rcutorture: Add per-reader-segment preemption diagnostics
rcutorture: Read CPU ID for decoration protected by both reader types
rcutorture: Add preempt_count() to rcutorture_one_extend_check() diagnostics
rcutorture: Add parameters to control polled/conditional wait interval
rcutorture: Add documentation for recent conditional and polled APIs
rcutorture: Ignore attempts to test preemption and forward progress
rcutorture: Make rcutorture_one_extend() check reader state
rcutorture: Pretty-print rcutorture reader segments
...
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Merge tag 'slab-for-6.14' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab
Pull slab updates from Vlastimil Babka:
- Move the kfree_rcu() implementation from RCU to SLAB subsystem
(Uladzislau Rezki)
The kfree_rcu() implementation has been historically maintained in
the RCU subsystem. At LSF/MM we agreed to move it to SLAB, where it
more logically belongs. The batching is planned be more integrated
with SLUB internals in the future, while using the RCU APIs like any
other subsystem.
- Fix for kernel-doc warning (Randy Dunlap)
* tag 'slab-for-6.14' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab:
mm/slab: fix kernel-doc func param names
mm/slab: Move kvfree_rcu() into SLAB
rcu/kvfree: Adjust a shrinker name
rcu/kvfree: Adjust names passed into trace functions
rcu/kvfree: Move some functions under CONFIG_TINY_RCU
rcu/kvfree: Initialize kvfree_rcu() separately
- Consolidation of the machine_kexec_mask_interrupts() by providing a
generic implementation and replacing the copy & pasta orgy in the
relevant architectures.
- Prevent unconditional operations on interrupt chips during kexec
shutdown, which can trigger warnings in certain cases when the
underlying interrupt has been shut down before.
- Make the enforcement of interrupt handling in interrupt context
unconditionally available, so that it actually works for non x86
related interrupt chips. The earlier enablement for ARM GIC chips set
the required chip flag, but did not notice that the check was hidden
behind a config switch which is not selected by ARM[64].
- Decrapify the handling of deferred interrupt affinity setting. Some
interrupt chips require that affinity changes are made from the context
of handling an interrupt to avoid certain race conditions. For x86 this
was the default, but with interrupt remapping this requirement was
lifted and a flag was introduced which tells the core code that
affinity changes can be done in any context. Unrestricted affinity
changes are the default for the majority of interrupt chips. RISCV has
the requirement to add the deferred mode to one of it's interrupt
controllers, but with the original implementation this would require to
add the any context flag to all other RISC-V interrupt chips. That's
backwards, so reverse the logic and require that chips, which need the
deferred mode have to be marked accordingly. That avoids chasing the
'sane' chips and marking them.
- Add multi-node support to the Loongarch AVEC interrupt controller
driver.
- The usual tiny cleanups, fixes and improvements all over the place.
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Merge tag 'irq-core-2025-01-21' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull interrupt subsystem updates from Thomas Gleixner:
- Consolidate the machine_kexec_mask_interrupts() by providing a
generic implementation and replacing the copy & pasta orgy in the
relevant architectures.
- Prevent unconditional operations on interrupt chips during kexec
shutdown, which can trigger warnings in certain cases when the
underlying interrupt has been shut down before.
- Make the enforcement of interrupt handling in interrupt context
unconditionally available, so that it actually works for non x86
related interrupt chips. The earlier enablement for ARM GIC chips set
the required chip flag, but did not notice that the check was hidden
behind a config switch which is not selected by ARM[64].
- Decrapify the handling of deferred interrupt affinity setting.
Some interrupt chips require that affinity changes are made from the
context of handling an interrupt to avoid certain race conditions.
For x86 this was the default, but with interrupt remapping this
requirement was lifted and a flag was introduced which tells the core
code that affinity changes can be done in any context. Unrestricted
affinity changes are the default for the majority of interrupt chips.
RISCV has the requirement to add the deferred mode to one of it's
interrupt controllers, but with the original implementation this
would require to add the any context flag to all other RISC-V
interrupt chips. That's backwards, so reverse the logic and require
that chips, which need the deferred mode have to be marked
accordingly. That avoids chasing the 'sane' chips and marking them.
- Add multi-node support to the Loongarch AVEC interrupt controller
driver.
- The usual tiny cleanups, fixes and improvements all over the place.
* tag 'irq-core-2025-01-21' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
genirq/generic_chip: Export irq_gc_mask_disable_and_ack_set()
genirq/timings: Add kernel-doc for a function parameter
genirq: Remove IRQ_MOVE_PCNTXT and related code
x86/apic: Convert to IRQCHIP_MOVE_DEFERRED
genirq: Provide IRQCHIP_MOVE_DEFERRED
hexagon: Remove GENERIC_PENDING_IRQ leftover
ARC: Remove GENERIC_PENDING_IRQ
genirq: Remove handle_enforce_irqctx() wrapper
genirq: Make handle_enforce_irqctx() unconditionally available
irqchip/loongarch-avec: Add multi-nodes topology support
irqchip/ts4800: Replace seq_printf() by seq_puts()
irqchip/ti-sci-inta : Add module build support
irqchip/ti-sci-intr: Add module build support
irqchip/irq-brcmstb-l2: Replace brcmstb_l2_mask_and_ack() by generic function
irqchip: keystone: Use syscon_regmap_lookup_by_phandle_args
genirq/kexec: Prevent redundant IRQ masking by checking state before shutdown
kexec: Consolidate machine_kexec_mask_interrupts() implementation
genirq: Reuse irq_thread_fn() for forced thread case
genirq: Move irq_thread_fn() further up in the code
- Just boring cleanups, typo and comment fixes and trivial optimizations
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Merge tag 'timers-core-2025-01-21' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer and timekeeping updates from Thomas Gleixner:
- Just boring cleanups, typo and comment fixes and trivial optimizations
* tag 'timers-core-2025-01-21' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
timers/migration: Simplify top level detection on group setup
timers: Optimize get_timer_[this_]cpu_base()
timekeeping: Remove unused ktime_get_fast_timestamps()
timer/migration: Fix kernel-doc warnings for union tmigr_state
tick/broadcast: Add kernel-doc for function parameters
hrtimers: Update the return type of enqueue_hrtimer()
clocksource/wdtest: Print time values for short udelay(1)
posix-timers: Fix typo in __lock_timer()
vdso: Correct typo in PAGE_SHIFT comment
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Merge tag 'livepatching-for-6.14' of git://git.kernel.org/pub/scm/linux/kernel/git/livepatching/livepatching
Pull livepatching updates from Petr Mladek:
- Add a sysfs attribute showing the livepatch ordering
- Some code clean up
* tag 'livepatching-for-6.14' of git://git.kernel.org/pub/scm/linux/kernel/git/livepatching/livepatching:
selftests: livepatch: add test cases of stack_order sysfs interface
livepatch: Add stack_order sysfs attribute
selftests/livepatch: Replace hardcoded module name with variable in test-callbacks.sh
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Merge tag 'printk-for-6.14' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux
Pull printk updates from Petr Mladek:
- Prevent possible deadlocks, caused by the lock serializing per-CPU
backtraces, by entering the deferred printk context
- Enforce the right casting in LOG_BUF_LEN_MAX definition
* tag 'printk-for-6.14' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux:
printk: Defer legacy printing when holding printk_cpu_sync
printk: Remove redundant deferred check in vprintk()
printk: Fix signed integer overflow when defining LOG_BUF_LEN_MAX
- Fair scheduler (SCHED_FAIR) enhancements:
- Behavioral improvements:
- Untangle NEXT_BUDDY and pick_next_task() (Peter Zijlstra)
- Delayed-dequeue enhancements & fixes: (Vincent Guittot)
- Rename h_nr_running into h_nr_queued
- Add new cfs_rq.h_nr_runnable
- Use the new cfs_rq.h_nr_runnable
- Removed unsued cfs_rq.h_nr_delayed
- Rename cfs_rq.idle_h_nr_running into h_nr_idle
- Remove unused cfs_rq.idle_nr_running
- Rename cfs_rq.nr_running into nr_queued
- Do not try to migrate delayed dequeue task
- Fix variable declaration position
- Encapsulate set custom slice in a __setparam_fair() function
- Fixes:
- Fix race between yield_to() and try_to_wake_up() (Tianchen Ding)
- Fix CPU bandwidth limit bypass during CPU hotplug (Vishal Chourasia)
- Cleanups:
- Clean up in migrate_degrades_locality() to improve
readability (Peter Zijlstra)
- Mark m*_vruntime() with __maybe_unused (Andy Shevchenko)
- Update comments after sched_tick() rename (Sebastian Andrzej Siewior)
- Remove CONFIG_CFS_BANDWIDTH=n definition of cfs_bandwidth_used()
(Valentin Schneider)
- Deadline scheduler (SCHED_DL) enhancements:
- Restore dl_server bandwidth on non-destructive root domain
changes (Juri Lelli)
- Correctly account for allocated bandwidth during
hotplug (Juri Lelli)
- Check bandwidth overflow earlier for hotplug (Juri Lelli)
- Clean up goto label in pick_earliest_pushable_dl_task()
(John Stultz)
- Consolidate timer cancellation (Wander Lairson Costa)
- Load-balancer enhancements:
- Improve performance by prioritizing migrating eligible
tasks in sched_balance_rq() (Hao Jia)
- Do not compute NUMA Balancing stats unnecessarily during
load-balancing (K Prateek Nayak)
- Do not compute overloaded status unnecessarily during
load-balancing (K Prateek Nayak)
- Generic scheduling code enhancements:
- Use READ_ONCE() in task_on_rq_queued(), to consistently use
the WRITE_ONCE() updated ->on_rq field (Harshit Agarwal)
- Isolated CPUs support enhancements: (Waiman Long)
- Make "isolcpus=nohz" equivalent to "nohz_full"
- Consolidate housekeeping cpumasks that are always identical
- Remove HK_TYPE_SCHED
- Unify HK_TYPE_{TIMER|TICK|MISC} to HK_TYPE_KERNEL_NOISE
- RSEQ enhancements:
- Validate read-only fields under DEBUG_RSEQ config
(Mathieu Desnoyers)
- PSI enhancements:
- Fix race when task wakes up before psi_sched_switch()
adjusts flags (Chengming Zhou)
- IRQ time accounting performance enhancements: (Yafang Shao)
- Define sched_clock_irqtime as static key
- Don't account irq time if sched_clock_irqtime is disabled
- Virtual machine scheduling enhancements:
- Don't try to catch up excess steal time (Suleiman Souhlal)
- Heterogenous x86 CPU scheduling enhancements: (K Prateek Nayak)
- Convert "sysctl_sched_itmt_enabled" to boolean
- Use guard() for itmt_update_mutex
- Move the "sched_itmt_enabled" sysctl to debugfs
- Remove x86_smt_flags and use cpu_smt_flags directly
- Use x86_sched_itmt_flags for PKG domain unconditionally
- Debugging code & instrumentation enhancements:
- Change need_resched warnings to pr_err() (David Rientjes)
- Print domain name in /proc/schedstat (K Prateek Nayak)
- Fix value reported by hot tasks pulled in /proc/schedstat (Peter Zijlstra)
- Report the different kinds of imbalances in /proc/schedstat (Swapnil Sapkal)
- Move sched domain name out of CONFIG_SCHED_DEBUG (Swapnil Sapkal)
- Update Schedstat version to 17 (Swapnil Sapkal)
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'sched-core-2025-01-21' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler updates from Ingo Molnar:
"Fair scheduler (SCHED_FAIR) enhancements:
- Behavioral improvements:
- Untangle NEXT_BUDDY and pick_next_task() (Peter Zijlstra)
- Delayed-dequeue enhancements & fixes: (Vincent Guittot)
- Rename h_nr_running into h_nr_queued
- Add new cfs_rq.h_nr_runnable
- Use the new cfs_rq.h_nr_runnable
- Removed unsued cfs_rq.h_nr_delayed
- Rename cfs_rq.idle_h_nr_running into h_nr_idle
- Remove unused cfs_rq.idle_nr_running
- Rename cfs_rq.nr_running into nr_queued
- Do not try to migrate delayed dequeue task
- Fix variable declaration position
- Encapsulate set custom slice in a __setparam_fair() function
- Fixes:
- Fix race between yield_to() and try_to_wake_up() (Tianchen Ding)
- Fix CPU bandwidth limit bypass during CPU hotplug (Vishal
Chourasia)
- Cleanups:
- Clean up in migrate_degrades_locality() to improve readability
(Peter Zijlstra)
- Mark m*_vruntime() with __maybe_unused (Andy Shevchenko)
- Update comments after sched_tick() rename (Sebastian Andrzej
Siewior)
- Remove CONFIG_CFS_BANDWIDTH=n definition of cfs_bandwidth_used()
(Valentin Schneider)
Deadline scheduler (SCHED_DL) enhancements:
- Restore dl_server bandwidth on non-destructive root domain changes
(Juri Lelli)
- Correctly account for allocated bandwidth during hotplug (Juri
Lelli)
- Check bandwidth overflow earlier for hotplug (Juri Lelli)
- Clean up goto label in pick_earliest_pushable_dl_task() (John
Stultz)
- Consolidate timer cancellation (Wander Lairson Costa)
Load-balancer enhancements:
- Improve performance by prioritizing migrating eligible tasks in
sched_balance_rq() (Hao Jia)
- Do not compute NUMA Balancing stats unnecessarily during
load-balancing (K Prateek Nayak)
- Do not compute overloaded status unnecessarily during
load-balancing (K Prateek Nayak)
Generic scheduling code enhancements:
- Use READ_ONCE() in task_on_rq_queued(), to consistently use the
WRITE_ONCE() updated ->on_rq field (Harshit Agarwal)
Isolated CPUs support enhancements: (Waiman Long)
- Make "isolcpus=nohz" equivalent to "nohz_full"
- Consolidate housekeeping cpumasks that are always identical
- Remove HK_TYPE_SCHED
- Unify HK_TYPE_{TIMER|TICK|MISC} to HK_TYPE_KERNEL_NOISE
RSEQ enhancements:
- Validate read-only fields under DEBUG_RSEQ config (Mathieu
Desnoyers)
PSI enhancements:
- Fix race when task wakes up before psi_sched_switch() adjusts flags
(Chengming Zhou)
IRQ time accounting performance enhancements: (Yafang Shao)
- Define sched_clock_irqtime as static key
- Don't account irq time if sched_clock_irqtime is disabled
Virtual machine scheduling enhancements:
- Don't try to catch up excess steal time (Suleiman Souhlal)
Heterogenous x86 CPU scheduling enhancements: (K Prateek Nayak)
- Convert "sysctl_sched_itmt_enabled" to boolean
- Use guard() for itmt_update_mutex
- Move the "sched_itmt_enabled" sysctl to debugfs
- Remove x86_smt_flags and use cpu_smt_flags directly
- Use x86_sched_itmt_flags for PKG domain unconditionally
Debugging code & instrumentation enhancements:
- Change need_resched warnings to pr_err() (David Rientjes)
- Print domain name in /proc/schedstat (K Prateek Nayak)
- Fix value reported by hot tasks pulled in /proc/schedstat (Peter
Zijlstra)
- Report the different kinds of imbalances in /proc/schedstat
(Swapnil Sapkal)
- Move sched domain name out of CONFIG_SCHED_DEBUG (Swapnil Sapkal)
- Update Schedstat version to 17 (Swapnil Sapkal)"
* tag 'sched-core-2025-01-21' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (48 commits)
rseq: Fix rseq unregistration regression
psi: Fix race when task wakes up before psi_sched_switch() adjusts flags
sched, psi: Don't account irq time if sched_clock_irqtime is disabled
sched: Don't account irq time if sched_clock_irqtime is disabled
sched: Define sched_clock_irqtime as static key
sched/fair: Do not compute overloaded status unnecessarily during lb
sched/fair: Do not compute NUMA Balancing stats unnecessarily during lb
x86/topology: Use x86_sched_itmt_flags for PKG domain unconditionally
x86/topology: Remove x86_smt_flags and use cpu_smt_flags directly
x86/itmt: Move the "sched_itmt_enabled" sysctl to debugfs
x86/itmt: Use guard() for itmt_update_mutex
x86/itmt: Convert "sysctl_sched_itmt_enabled" to boolean
sched/core: Prioritize migrating eligible tasks in sched_balance_rq()
sched/debug: Change need_resched warnings to pr_err
sched/fair: Encapsulate set custom slice in a __setparam_fair() function
sched: Fix race between yield_to() and try_to_wake_up()
docs: Update Schedstat version to 17
sched/stats: Print domain name in /proc/schedstat
sched: Move sched domain name out of CONFIG_SCHED_DEBUG
sched: Report the different kinds of imbalances in /proc/schedstat
...
* clk-fixes:
clk: clk-loongson2: Fix the number count of clk provider
clk: mmp2: call pm_genpd_init() only after genpd.name is set
clk: sunxi-ng: a100: enable MMC clock reparenting
clk: clk-imx8mp-audiomix: fix function signature
clk: thead: Fix TH1520 emmc and shdci clock rate
of the "disablelapic" boot parameter.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'x86-cleanups-2025-01-21' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 cleanups from Ingo Molnar:
"Miscellaneous x86 cleanups and typo fixes, and also the removal of
the 'disablelapic' boot parameter"
* tag 'x86-cleanups-2025-01-21' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/ioapic: Remove a stray tab in the IO-APIC type string
x86/cpufeatures: Remove "AMD" from the comments to the AMD-specific leaf
Documentation/kernel-parameters: Fix a typo in kvm.enable_virt_at_load text
x86/cpu: Fix typo in x86_match_cpu()'s doc
x86/apic: Remove "disablelapic" cmdline option
Documentation: Merge x86-specific boot options doc into kernel-parameters.txt
x86/ioremap: Remove unused size parameter in remapping functions
x86/ioremap: Simplify setup_data mapping variants
x86/boot/compressed: Remove unused header includes from kaslr.c
- Seqlock optimizations that arose in a perf context and were
merged into the perf tree:
- seqlock: Add raw_seqcount_try_begin (Suren Baghdasaryan)
- mm: Convert mm_lock_seq to a proper seqcount ((Suren Baghdasaryan)
- mm: Introduce mmap_lock_speculate_{try_begin|retry} (Suren Baghdasaryan)
- mm/gup: Use raw_seqcount_try_begin() (Peter Zijlstra)
- Core perf enhancements:
- Reduce 'struct page' footprint of perf by mapping pages
in advance (Lorenzo Stoakes)
- Save raw sample data conditionally based on sample type (Yabin Cui)
- Reduce sampling overhead by checking sample_type in
perf_sample_save_callchain() and perf_sample_save_brstack() (Yabin Cui)
- Export perf_exclude_event() (Namhyung Kim)
- Uprobes scalability enhancements: (Andrii Nakryiko)
- Simplify find_active_uprobe_rcu() VMA checks
- Add speculative lockless VMA-to-inode-to-uprobe resolution
- Simplify session consumer tracking
- Decouple return_instance list traversal and freeing
- Ensure return_instance is detached from the list before freeing
- Reuse return_instances between multiple uretprobes within task
- Guard against kmemdup() failing in dup_return_instance()
- AMD core PMU driver enhancements:
- Relax privilege filter restriction on AMD IBS (Namhyung Kim)
- AMD RAPL energy counters support: (Dhananjay Ugwekar)
- Introduce topology_logical_core_id() (K Prateek Nayak)
- Remove the unused get_rapl_pmu_cpumask() function
- Remove the cpu_to_rapl_pmu() function
- Rename rapl_pmu variables
- Make rapl_model struct global
- Add arguments to the init and cleanup functions
- Modify the generic variable names to *_pkg*
- Remove the global variable rapl_msrs
- Move the cntr_mask to rapl_pmus struct
- Add core energy counter support for AMD CPUs
- Intel core PMU driver enhancements:
- Support RDPMC 'metrics clear mode' feature (Kan Liang)
- Clarify adaptive PEBS processing (Kan Liang)
- Factor out functions for PEBS records processing (Kan Liang)
- Simplify the PEBS records processing for adaptive PEBS (Kan Liang)
- Intel uncore driver enhancements: (Kan Liang)
- Convert buggy pmu->func_id use to pmu->registered
- Support more units on Granite Rapids
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'perf-core-2025-01-20' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull performance events updates from Ingo Molnar:
"Seqlock optimizations that arose in a perf context and were merged
into the perf tree:
- seqlock: Add raw_seqcount_try_begin (Suren Baghdasaryan)
- mm: Convert mm_lock_seq to a proper seqcount (Suren Baghdasaryan)
- mm: Introduce mmap_lock_speculate_{try_begin|retry} (Suren
Baghdasaryan)
- mm/gup: Use raw_seqcount_try_begin() (Peter Zijlstra)
Core perf enhancements:
- Reduce 'struct page' footprint of perf by mapping pages in advance
(Lorenzo Stoakes)
- Save raw sample data conditionally based on sample type (Yabin Cui)
- Reduce sampling overhead by checking sample_type in
perf_sample_save_callchain() and perf_sample_save_brstack() (Yabin
Cui)
- Export perf_exclude_event() (Namhyung Kim)
Uprobes scalability enhancements: (Andrii Nakryiko)
- Simplify find_active_uprobe_rcu() VMA checks
- Add speculative lockless VMA-to-inode-to-uprobe resolution
- Simplify session consumer tracking
- Decouple return_instance list traversal and freeing
- Ensure return_instance is detached from the list before freeing
- Reuse return_instances between multiple uretprobes within task
- Guard against kmemdup() failing in dup_return_instance()
AMD core PMU driver enhancements:
- Relax privilege filter restriction on AMD IBS (Namhyung Kim)
AMD RAPL energy counters support: (Dhananjay Ugwekar)
- Introduce topology_logical_core_id() (K Prateek Nayak)
- Remove the unused get_rapl_pmu_cpumask() function
- Remove the cpu_to_rapl_pmu() function
- Rename rapl_pmu variables
- Make rapl_model struct global
- Add arguments to the init and cleanup functions
- Modify the generic variable names to *_pkg*
- Remove the global variable rapl_msrs
- Move the cntr_mask to rapl_pmus struct
- Add core energy counter support for AMD CPUs
Intel core PMU driver enhancements:
- Support RDPMC 'metrics clear mode' feature (Kan Liang)
- Clarify adaptive PEBS processing (Kan Liang)
- Factor out functions for PEBS records processing (Kan Liang)
- Simplify the PEBS records processing for adaptive PEBS (Kan Liang)
Intel uncore driver enhancements: (Kan Liang)
- Convert buggy pmu->func_id use to pmu->registered
- Support more units on Granite Rapids"
* tag 'perf-core-2025-01-20' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (33 commits)
perf: map pages in advance
perf/x86/intel/uncore: Support more units on Granite Rapids
perf/x86/intel/uncore: Clean up func_id
perf/x86/intel: Support RDPMC metrics clear mode
uprobes: Guard against kmemdup() failing in dup_return_instance()
perf/x86: Relax privilege filter restriction on AMD IBS
perf/core: Export perf_exclude_event()
uprobes: Reuse return_instances between multiple uretprobes within task
uprobes: Ensure return_instance is detached from the list before freeing
uprobes: Decouple return_instance list traversal and freeing
uprobes: Simplify session consumer tracking
uprobes: add speculative lockless VMA-to-inode-to-uprobe resolution
uprobes: simplify find_active_uprobe_rcu() VMA checks
mm: introduce mmap_lock_speculate_{try_begin|retry}
mm: convert mm_lock_seq to a proper seqcount
mm/gup: Use raw_seqcount_try_begin()
seqlock: add raw_seqcount_try_begin
perf/x86/rapl: Add core energy counter support for AMD CPUs
perf/x86/rapl: Move the cntr_mask to rapl_pmus struct
perf/x86/rapl: Remove the global variable rapl_msrs
...
- Lockdep:
- Improve and fix lockdep bitsize limits, clarify the Kconfig
documentation (Carlos Llamas)
- Fix lockdep build warning on Clang related to
chain_hlock_class_idx() inlining (Andy Shevchenko)
- Relax the requirements of PROVE_RAW_LOCK_NESTING arch support
by not tying it to ARCH_SUPPORTS_RT unnecessarily (Waiman Long)
- Rust integration:
- Support lock pointers managed by the C side (Lyude Paul)
- Support guard types (Lyude Paul)
- Update MAINTAINERS file filters to include the
Rust locking code (Boqun Feng)
- Wake-queues:
- Add raw_spin_*wake() helpers to simplify locking code (John Stultz)
- SMP cross-calls:
- Fix potential data update race by evaluating the local cond_func()
before IPI side-effects (Mathieu Desnoyers)
- Guard primitives:
- Ease [c]tags based searches by including the cleanup/guard type
primitives (Peter Zijlstra)
- ww_mutexes:
- Simplify the ww_mutex self-test code via swap() (Thorsten Blum)
- Static calls:
- Update the static calls MAINTAINERS file-pattern (Jiri Slaby)
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'locking-core-2025-01-20' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull locking updates from Ingo Molnar:
"Lockdep:
- Improve and fix lockdep bitsize limits, clarify the Kconfig
documentation (Carlos Llamas)
- Fix lockdep build warning on Clang related to
chain_hlock_class_idx() inlining (Andy Shevchenko)
- Relax the requirements of PROVE_RAW_LOCK_NESTING arch support by
not tying it to ARCH_SUPPORTS_RT unnecessarily (Waiman Long)
Rust integration:
- Support lock pointers managed by the C side (Lyude Paul)
- Support guard types (Lyude Paul)
- Update MAINTAINERS file filters to include the Rust locking code
(Boqun Feng)
Wake-queues:
- Add raw_spin_*wake() helpers to simplify locking code (John Stultz)
SMP cross-calls:
- Fix potential data update race by evaluating the local cond_func()
before IPI side-effects (Mathieu Desnoyers)
Guard primitives:
- Ease [c]tags based searches by including the cleanup/guard type
primitives (Peter Zijlstra)
ww_mutexes:
- Simplify the ww_mutex self-test code via swap() (Thorsten Blum)
Static calls:
- Update the static calls MAINTAINERS file-pattern (Jiri Slaby)"
* tag 'locking-core-2025-01-20' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
MAINTAINERS: Add static_call_inline.c to STATIC BRANCH/CALL
cleanup, tags: Create tags for the cleanup primitives
sched/wake_q: Add helper to call wake_up_q after unlock with preemption disabled
rust: sync: Add lock::Backend::assert_is_held()
rust: sync: Add SpinLockGuard type alias
rust: sync: Add MutexGuard type alias
rust: sync: Make Guard::new() public
rust: sync: Add Lock::from_raw() for Lock<(), B>
locking: MAINTAINERS: Start watching Rust locking primitives
lockdep: Move lockdep_assert_locked() under #ifdef CONFIG_PROVE_LOCKING
lockdep: Mark chain_hlock_class_idx() with __maybe_unused
lockdep: Document MAX_LOCKDEP_CHAIN_HLOCKS calculation
lockdep: Clarify size for LOCKDEP_*_BITS configs
lockdep: Fix upper limit for LOCKDEP_*_BITS configs
locking/ww_mutex/test: Use swap() macro
smp/scf: Evaluate local cond_func() before IPI side-effects
locking/lockdep: Enforce PROVE_RAW_LOCK_NESTING only if ARCH_SUPPORTS_RT
which is legacy now, and the creation of the new AMD node concept which
represents the Zen architecture of having a collection of I/O devices within
an SoC. Those nodes comprise the so-called data fabric on Zen. This has
at least one practical advantage of not having to add a PCI ID each time
a new data fabric PCI device releases. Eventually, the lot more uniform
provider of data fabric functionality amd_node.c will be used by all the
drivers which need it
- Smaller cleanups
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Merge tag 'x86_misc_for_v6.14_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull misc x86 updates from Borislav Petkov:
- The first part of a restructuring of AMD's representation of a
northbridge which is legacy now, and the creation of the new AMD node
concept which represents the Zen architecture of having a collection
of I/O devices within an SoC. Those nodes comprise the so-called data
fabric on Zen.
This has at least one practical advantage of not having to add a PCI
ID each time a new data fabric PCI device releases. Eventually, the
lot more uniform provider of data fabric functionality amd_node.c
will be used by all the drivers which need it
- Smaller cleanups
* tag 'x86_misc_for_v6.14_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/amd_node: Use defines for SMN register offsets
x86/amd_node: Remove dependency on AMD_NB
x86/amd_node: Update __amd_smn_rw() error paths
x86/amd_nb: Move SMN access code to a new amd_node driver
x86/amd_nb, hwmon: (k10temp): Simplify amd_pci_dev_to_node_id()
x86/amd_nb: Simplify function 3 search
x86/amd_nb: Use topology info to get AMD node count
x86/amd_nb: Simplify root device search
x86/amd_nb: Simplify function 4 search
x86: Start moving AMD node functionality out of AMD_NB
x86/amd_nb: Clean up early_is_amd_nb()
x86/amd_nb: Restrict init function to AMD-based systems
x86/mtrr: Rename mtrr_overwrite_state() to guest_force_mtrr_state()
use the generic struct x86_cpu_id thing
- Remove magic naked numbers for CPUID functions and use proper defines of the
prefix CPUID_LEAF_*. Consolidate some of the crazy use around the tree
- Smaller cleanups and improvements
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Merge tag 'x86_cpu_for_v6.14_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 cpuid updates from Borislav Petkov:
- Remove the less generic CPU matching infra around struct x86_cpu_desc
and use the generic struct x86_cpu_id thing
- Remove magic naked numbers for CPUID functions and use proper defines
of the prefix CPUID_LEAF_*. Consolidate some of the crazy use around
the tree
- Smaller cleanups and improvements
* tag 'x86_cpu_for_v6.14_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/cpu: Make all all CPUID leaf names consistent
x86/fpu: Remove unnecessary CPUID level check
x86/fpu: Move CPUID leaf definitions to common code
x86/tsc: Remove CPUID "frequency" leaf magic numbers.
x86/tsc: Move away from TSC leaf magic numbers
x86/cpu: Move TSC CPUID leaf definition
x86/cpu: Refresh DCA leaf reading code
x86/cpu: Remove unnecessary MwAIT leaf checks
x86/cpu: Use MWAIT leaf definition
x86/cpu: Move MWAIT leaf definition to common header
x86/cpu: Remove 'x86_cpu_desc' infrastructure
x86/cpu: Move AMD erratum 1386 table over to 'x86_cpu_id'
x86/cpu: Replace PEBS use of 'x86_cpu_desc' use with 'x86_cpu_id'
x86/cpu: Expose only stepping min/max interface
x86/cpu: Introduce new microcode matching helper
x86/cpufeature: Document cpu_feature_enabled() as the default to use
x86/paravirt: Remove the WBINVD callback
x86/cpufeatures: Free up unused feature bits
table of sorts which contains per-node descriptors of each node-local
4K page, denoting its ownership (hypervisor, guest, etc) in the realm
of confidential computing. Add support for such a table in order to
improve referential locality when accessing or modifying RMP table
entries
- Add support for reading the TSC in SNP guests by removing any
interference or influence the hypervisor might have, with the goal of
making a confidential guest even more independent from the hypervisor
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Merge tag 'x86_sev_for_v6.14_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 SEV updates from Borislav Petkov:
- A segmented Reverse Map table (RMP) is a across-nodes distributed
table of sorts which contains per-node descriptors of each node-local
4K page, denoting its ownership (hypervisor, guest, etc) in the realm
of confidential computing. Add support for such a table in order to
improve referential locality when accessing or modifying RMP table
entries
- Add support for reading the TSC in SNP guests by removing any
interference or influence the hypervisor might have, with the goal of
making a confidential guest even more independent from the hypervisor
* tag 'x86_sev_for_v6.14_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/sev: Add the Secure TSC feature for SNP guests
x86/tsc: Init the TSC for Secure TSC guests
x86/sev: Mark the TSC in a secure TSC guest as reliable
x86/sev: Prevent RDTSC/RDTSCP interception for Secure TSC enabled guests
x86/sev: Prevent GUEST_TSC_FREQ MSR interception for Secure TSC enabled guests
x86/sev: Change TSC MSR behavior for Secure TSC enabled guests
x86/sev: Add Secure TSC support for SNP guests
x86/sev: Relocate SNP guest messaging routines to common code
x86/sev: Carve out and export SNP guest messaging init routines
virt: sev-guest: Replace GFP_KERNEL_ACCOUNT with GFP_KERNEL
virt: sev-guest: Remove is_vmpck_empty() helper
x86/sev/docs: Document the SNP Reverse Map Table (RMP)
x86/sev: Add full support for a segmented RMP table
x86/sev: Treat the contiguous RMP table as a single RMP segment
x86/sev: Map only the RMP table entries instead of the full RMP range
x86/sev: Move the SNP probe routine out of the way
x86/sev: Require the RMPREAD instruction after Zen4
x86/sev: Add support for the RMPREAD instruction
x86/sev: Prepare for using the RMPREAD instruction to access the RMP
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Merge tag 'x86_microcode_for_v6.14_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 microcode loader updates from Borislav Petkov:
- A bunch of minor cleanups
* tag 'x86_microcode_for_v6.14_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/microcode/AMD: Remove ret local var in early_apply_microcode()
x86/microcode/AMD: Have __apply_microcode_amd() return bool
x86/microcode/AMD: Make __verify_patch_size() return bool
x86/microcode/AMD: Remove bogus comment from parse_container()
x86/microcode/AMD: Return bool from find_blobs_in_containers()
Joe Hattori
Linus Torvalds
Stephen Boyd