Pull power management updates from Rafael Wysocki:
"The big ticket items here are the rework of suspend-to-idle in order
to add proper support for power button wakeup from it on recent Dell
laptops and the rework of interfaces exporting the current CPU
frequency on x86.
In addition to that, support for a few new pieces of hardware is
added, the PCI/ACPI device wakeup infrastructure is simplified
significantly and the wakeup IRQ framework is fixed to unbreak the IRQ
bus locking infrastructure.
Also, there are some functional improvements for intel_pstate, tools
updates and small fixes and cleanups all over.
Specifics:
- Rework suspend-to-idle to allow it to take wakeup events signaled
by the EC into account on ACPI-based platforms in order to properly
support power button wakeup from suspend-to-idle on recent Dell
laptops (Rafael Wysocki).
That includes the core suspend-to-idle code rework, support for the
Low Power S0 _DSM interface, and support for the ACPI INT0002
Virtual GPIO device from Hans de Goede (required for USB keyboard
wakeup from suspend-to-idle to work on some machines).
- Stop trying to export the current CPU frequency via /proc/cpuinfo
on x86 as that is inaccurate and confusing (Len Brown).
- Rework the way in which the current CPU frequency is exported by
the kernel (over the cpufreq sysfs interface) on x86 systems with
the APERF and MPERF registers by always using values read from
these registers, when available, to compute the current frequency
regardless of which cpufreq driver is in use (Len Brown).
- Rework the PCI/ACPI device wakeup infrastructure to remove the
questionable and artificial distinction between "devices that can
wake up the system from sleep states" and "devices that can
generate wakeup signals in the working state" from it, which allows
the code to be simplified quite a bit (Rafael Wysocki).
- Fix the wakeup IRQ framework by making it use SRCU instead of RCU
which doesn't allow sleeping in the read-side critical sections,
but which in turn is expected to be allowed by the IRQ bus locking
infrastructure (Thomas Gleixner).
- Modify some computations in the intel_pstate driver to avoid
rounding errors resulting from them (Srinivas Pandruvada).
- Reduce the overhead of the intel_pstate driver in the HWP
(hardware-managed P-states) mode and when the "performance" P-state
selection algorithm is in use by making it avoid registering
scheduler callbacks in those cases (Len Brown).
- Rework the energy_performance_preference sysfs knob in intel_pstate
by changing the values that correspond to different symbolic hint
names used by it (Len Brown).
- Make it possible to use more than one cpuidle driver at the same
time on ARM (Daniel Lezcano).
- Make it possible to prevent the cpuidle menu governor from using
the 0 state by disabling it via sysfs (Nicholas Piggin).
- Add support for FFH (Fixed Functional Hardware) MWAIT in ACPI C1 on
AMD systems (Yazen Ghannam).
- Make the CPPC cpufreq driver take the lowest nonlinear performance
information into account (Prashanth Prakash).
- Add support for hi3660 to the cpufreq-dt driver, fix the imx6q
driver and clean up the sfi, exynos5440 and intel_pstate drivers
(Colin Ian King, Krzysztof Kozlowski, Octavian Purdila, Rafael
Wysocki, Tao Wang).
- Fix a few minor issues in the generic power domains (genpd)
framework and clean it up somewhat (Krzysztof Kozlowski, Mikko
Perttunen, Viresh Kumar).
- Fix a couple of minor issues in the operating performance points
(OPP) framework and clean it up somewhat (Viresh Kumar).
- Fix a CONFIG dependency in the hibernation core and clean it up
slightly (Balbir Singh, Arvind Yadav, BaoJun Luo).
- Add rk3228 support to the rockchip-io adaptive voltage scaling
(AVS) driver (David Wu).
- Fix an incorrect bit shift operation in the RAPL power capping
driver (Adam Lessnau).
- Add support for the EPP field in the HWP (hardware managed
P-states) control register, HWP.EPP, to the x86_energy_perf_policy
tool and update msr-index.h with HWP.EPP values (Len Brown).
- Fix some minor issues in the turbostat tool (Len Brown).
- Add support for AMD family 0x17 CPUs to the cpupower tool and fix a
minor issue in it (Sherry Hurwitz).
- Assorted cleanups, mostly related to the constification of some
data structures (Arvind Yadav, Joe Perches, Kees Cook, Krzysztof
Kozlowski)"
* tag 'pm-4.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (69 commits)
cpufreq: Update scaling_cur_freq documentation
cpufreq: intel_pstate: Clean up after performance governor changes
PM: hibernate: constify attribute_group structures.
cpuidle: menu: allow state 0 to be disabled
intel_idle: Use more common logging style
PM / Domains: Fix missing default_power_down_ok comment
PM / Domains: Fix unsafe iteration over modified list of domains
PM / Domains: Fix unsafe iteration over modified list of domain providers
PM / Domains: Fix unsafe iteration over modified list of device links
PM / Domains: Handle safely genpd_syscore_switch() call on non-genpd device
PM / Domains: Call driver's noirq callbacks
PM / core: Drop run_wake flag from struct dev_pm_info
PCI / PM: Simplify device wakeup settings code
PCI / PM: Drop pme_interrupt flag from struct pci_dev
ACPI / PM: Consolidate device wakeup settings code
ACPI / PM: Drop run_wake from struct acpi_device_wakeup_flags
PM / QoS: constify *_attribute_group.
PM / AVS: rockchip-io: add io selectors and supplies for rk3228
powercap/RAPL: prevent overridding bits outside of the mask
PM / sysfs: Constify attribute groups
...
Pull spi updates from Mark Brown:
"There's only one big change in this release but it's a very big
change: Geert Uytterhoeven has implemented support for SPI slave mode.
This feature has been on the cards since the subsystem was originally
merged back in the mists of time so it's great that Geert stepped up
and finally implemented it.
- SPI slave support, together with wholesale renaming of SPI
controllers from master to controller which went surprisingly
smoothly. This is already used with Renesas SoCs and support is in
the works for i.MX too.
- New drivers for Meson SPICC and ST STM32"
* tag 'spi-v4.13' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: (57 commits)
spi: loopback-test: Fix kfree() NULL pointer error.
spi: loopback-test: fix spelling mistake: "reruning" -> "rerunning"
spi: sirf: fix spelling mistake: "registerred" -> "registered"
spi: stm32: fix potential dereference null return value
spi: stm32: enhance DMA error management
spi: stm32: add runtime PM support
spi: stm32: use normal conditional statements instead of ternary operator
spi: stm32: replace st, spi-midi with st, spi-midi-ns to fit bindings
spi: stm32: fix example with st, spi-midi-ns property
spi: stm32: fix compatible to fit with new bindings
spi: stm32: use SoC specific compatible
spi: rockchip: Disable Runtime PM when chip select is asserted
spi: rockchip: Set GPIO_SS flag to enable Slave Select with GPIO CS
spi: atmel: fix corrupted data issue on SAM9 family SoCs
spi: stm32: fix error check on mbr being -ve
spi: add driver for STM32 SPI controller
spi: Document the STM32 SPI bindings
spi/bcm63xx: Fix checkpatch warnings
spi: imx: Check for allocation failure earlier
spi: mediatek: add spi support for mt2712 IC
...
Pull regulator updates from Mark Brown:
"A quiet release for the regulator API, a series of fairly small fixes
plus one new feature and a few new drivers:
- Support for regulators with different settling times for rising and
falling voltage changes.
- New drivers for Allwinner AXP803, HiSilicon HI6421V530 and TI
LP87565"
* tag 'regulator-v4.13' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator: (21 commits)
regulator: core: Fix size limit of supply_map
regulator: core: Fix voltage change propagations to supply regulators
regulator: lp87565: Fix the initial voltage range
regulator: tps65910: wire up sleep control configuration
regulator: hi6421v530: Describe consumed platform device
regulator: tps65910: check TPS65910_NUM_REGS at build time
regulator: core: Prioritise consumer mappings over regulator name
regulator: lp87565: Fix the GPL header
regulator: hi6421: Describe consumed platform device
regulator: hi6421v530: add driver for hi6421v530 voltage regulator
regulator: da9061: BUCK and LDO regulator driver
regulator: bd9571mwv: Statize local symbols
regulator: tps65917: Add support for SMPS12
regulator: lp87565: Add support for lp87565 PMIC regulators
regulator: axp20x-regulator: add support for AXP803
regulator: lp8755: fix spelling mistake "acceess" -> "access"
regulator: Allow for asymmetric settling times
regulator: DT: Add properties for asymmetric settling times
regulator: palmas: Drop unnecessary static
MAINTAINERS: Update MAX77802 PMIC entry
...
Pull regmap updates from Mark Brown:
"The usual small smattering of activity for regmap this time round:
- Addition of support for the 1-Wire bus standard.
- Options that allow support for more interrupt controllers with
regmap-irq.
- Only build LZO cache support if it's actually being used"
* tag 'regmap-v4.13' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap:
regmap: irq: add chip option mask_writeonly
regmap: irq: allow to register one cell interrupt controllers
regmap: Fix typo in IS_ENABLED() check
regmap: Add 1-Wire bus support
regmap: make LZO cache optional
Pull hwmon updates from Guenter Roeck:
- Add PMBus client driver for IR35221
- Add support for NCT6795D to nct6775 driver
- Functional improvements to adt7475, aspeed-pwm-tacho, and ibmpowernv
drivers
- Minor fixes and cleanups in various drivers
* tag 'hwmon-for-linus-v4.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging: (22 commits)
hwmon: (aspeed-pwm-tacho) Poll with short sleeps.
hwmon: (aspeed-pwm-tacho) reduce fan_tach period
hwmon: (ibmpowernv) Add current(A) sensor
hwmon: (ibmpowernv) introduce a legacy_compatibles array
hwmon: (pwm-fan) Switch to new atomic PWM API
hwmon: (scpi) Fix the scale of SCP sensor readings
hwmon: (aspeed-pwm-tacho) Enable both edge measurement.
hwmon: (ibmpowernv) Add highest/lowest attributes to sensors
hwmon: (pmbus) move header file out of I2C realm
hwmon: (max6639) move header file out of I2C realm
hwmon: (ltc4245) move header file out of I2C realm
hwmon: (ds620) move header file out of I2C realm
hwmon: (ads1015) move header file out of I2C realm
hwmon: (adt7475) temperature smoothing
hwmon: (adt7475) add high frequency support
hwmon: (adt7475) fan stall prevention
hwmon: (adt7475) replace find_nearest() with find_closest()
hwmon: (pmbus) Add client driver for IR35221
hwmon: (nct6775) Add support for NCT6795D
hwmon: (nct6775) Improve fan detection
...
Pull MMC updates from Ulf Hansson:
"MMC core:
- Add support to enable irq wake for slot gpio
- Remove MMC_CAP2_HC_ERASE_SZ and make it the default behaviour
- Improve R1 response error checks for stop commands
- Cleanup and clarify some MMC specific code
- Keep card runtime resumed while adding SDIO function devices
- Use device_property_read instead of of_property_read in mmc_of_parse()
- Move boot partition locking into a driver op to enable proper I/O scheduling
- Move multi/single-ioctl() to use block layer to enable proper I/O scheduling
- Delete bounce buffer Kconfig option
- Improve the eMMC HW reset support provided via the eMMC pwrseq
- Add host API to manage SDIO IRQs from a workqueue
MMC host:
- dw_mmc: Drop support for multiple slots
- dw_mmc: Use device_property_read instead of of_property_read
- dw_mmc-rockchip: Optional improved tuning to greatly decrease tuning time
- dw_mmc: Prevent rpm suspend for SDIO IRQs instead of always for SDIO cards
- dw_mmc: Convert to use MMC_CAP2_SDIO_IRQ_NOTHREAD for SDIO IRQs
- omap_hsmmc: Convert to mmc regulator APIs to consolidate code
- omap_hsmmc: Deprecate "vmmc_aux" in DT and use "vqmmc" instead
- tmio: make sure SDIO gets reinitialized after resume
- sdhi: add CMD23 support to R-Car Gen2 & Gen3
- tmio: add CMD23 support
- sdhi/tmio: Refactor code and rename files to simplify Kconfig options
- sdhci-pci: Enable card detect wake for Intel BYT-related SD controllers
- sdhci-pci: Add support for Intel CNP
- sdhci-esdhc-imx: Remove ENGcm07207 workaround - allow multi block transfers
- sdhci-esdhc-imx: Allow all supported prescaler values
- sdhci-esdhc-imx: Fix DAT line software reset
- sdhci-esdhc: Add SDHCI_QUIRK_32BIT_DMA_ADDR
- atmel-mci: Drop AVR32 support"
* tag 'mmc-v4.13' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc: (86 commits)
mmc: dw_mmc: remove the unnecessary slot variable
mmc: dw_mmc: use the 'slot' instead of 'cur_slot'
mmc: dw_mmc: remove the 'id' arguments about functions relevant to slot
mmc: dw_mmc: change the array of slots
mmc: dw_mmc: remove the loop about finding slots
mmc: dw_mmc: deprecated the "num-slots" property
mmc: dw_mmc-rockchip: parse rockchip, desired-num-phases from DT
dt-bindings: rockchip-dw-mshc: add optional rockchip, desired-num-phases
mmc: renesas-sdhi: improve checkpatch cleanness
mmc: tmio: improve checkpatch cleanness
mmc: sdhci-pci: Enable card detect wake for Intel BYT-related SD controllers
mmc: slot-gpio: Add support to enable irq wake on cd_irq
mmc: core: Remove MMC_CAP2_HC_ERASE_SZ
mmc: core: for data errors, take response of stop cmd into account
mmc: core: check also R1 response for stop commands
mmc: core: Clarify code for sending CSD
mmc: core: Drop mmc_all_send_cid() and use mmc_send_cxd_native() instead
mmc: core: Re-factor code for sending CID
mmc: core: Remove redundant code in mmc_send_cid()
mmc: core: Make mmc_can_reset() static
...
Pull documentation updates from Jonathan Corbet:
"There has been a fair amount of activity in the docs tree this time
around. Highlights include:
- Conversion of a bunch of security documentation into RST
- The conversion of the remaining DocBook templates by The Amazing
Mauro Machine. We can now drop the entire DocBook build chain.
- The usual collection of fixes and minor updates"
* tag 'docs-4.13' of git://git.lwn.net/linux: (90 commits)
scripts/kernel-doc: handle DECLARE_HASHTABLE
Documentation: atomic_ops.txt is core-api/atomic_ops.rst
Docs: clean up some DocBook loose ends
Make the main documentation title less Geocities
Docs: Use kernel-figure in vidioc-g-selection.rst
Docs: fix table problems in ras.rst
Docs: Fix breakage with Sphinx 1.5 and upper
Docs: Include the Latex "ifthen" package
doc/kokr/howto: Only send regression fixes after -rc1
docs-rst: fix broken links to dynamic-debug-howto in kernel-parameters
doc: Document suitability of IBM Verse for kernel development
Doc: fix a markup error in coding-style.rst
docs: driver-api: i2c: remove some outdated information
Documentation: DMA API: fix a typo in a function name
Docs: Insert missing space to separate link from text
doc/ko_KR/memory-barriers: Update control-dependencies example
Documentation, kbuild: fix typo "minimun" -> "minimum"
docs: Fix some formatting issues in request-key.rst
doc: ReSTify keys-trusted-encrypted.txt
doc: ReSTify keys-request-key.txt
...
Pull char/misc updates from Greg KH:
"Here is the "big" char/misc driver patchset for 4.13-rc1.
Lots of stuff in here, a large thunderbolt update, w1 driver header
reorg, the new mux driver subsystem, google firmware driver updates,
and a raft of other smaller things. Full details in the shortlog.
All of these have been in linux-next for a while with the only
reported issue being a merge problem with this tree and the jc-docs
tree in the w1 documentation area"
* tag 'char-misc-4.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (147 commits)
misc: apds990x: Use sysfs_match_string() helper
mei: drop unreachable code in mei_start
mei: validate the message header only in first fragment.
DocBook: w1: Update W1 file locations and names in DocBook
mux: adg792a: always require I2C support
nvmem: rockchip-efuse: add support for rk322x-efuse
nvmem: core: add locking to nvmem_find_cell
nvmem: core: Call put_device() in nvmem_unregister()
nvmem: core: fix leaks on registration errors
nvmem: correct Broadcom OTP controller driver writes
w1: Add subsystem kernel public interface
drivers/fsi: Add module license to core driver
drivers/fsi: Use asynchronous slave mode
drivers/fsi: Add hub master support
drivers/fsi: Add SCOM FSI client device driver
drivers/fsi/gpio: Add tracepoints for GPIO master
drivers/fsi: Add GPIO based FSI master
drivers/fsi: Document FSI master sysfs files in ABI
drivers/fsi: Add error handling for slave
drivers/fsi: Add tracepoints for low-level operations
...
Pull driver core updates from Greg KH:
"Here is the big driver core update for 4.13-rc1.
The large majority of this is a lot of cleanup of old fields in the
driver core structures and their remaining usages in random drivers.
All of those fixes have been reviewed by the various subsystem
maintainers. There's also some small firmware updates in here, a new
kobject uevent api interface that makes userspace interaction easier,
and a few other minor things.
All of these have been in linux-next for a long while with no reported
issues"
* tag 'driver-core-4.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (56 commits)
arm: mach-rpc: ecard: fix build error
zram: convert remaining CLASS_ATTR() to CLASS_ATTR_RO()
driver-core: remove struct bus_type.dev_attrs
powerpc: vio_cmo: use dev_groups and not dev_attrs for bus_type
powerpc: vio: use dev_groups and not dev_attrs for bus_type
USB: usbip: convert to use DRIVER_ATTR_RW
s390: drivers: convert to use DRIVER_ATTR_RO/WO
platform: thinkpad_acpi: convert to use DRIVER_ATTR_RO/RW
pcmcia: ds: convert to use DRIVER_ATTR_RO
wireless: ipw2x00: convert to use DRIVER_ATTR_RW
net: ehea: convert to use DRIVER_ATTR_RO
net: caif: convert to use DRIVER_ATTR_RO
TTY: hvc: convert to use DRIVER_ATTR_RW
PCI: pci-driver: convert to use DRIVER_ATTR_WO
IB: nes: convert to use DRIVER_ATTR_RW
HID: hid-core: convert to use DRIVER_ATTR_RO and drv_groups
arm: ecard: fix dev_groups patch typo
tty: serdev: use dev_groups and not dev_attrs for bus_type
sparc: vio: use dev_groups and not dev_attrs for bus_type
hid: intel-ish-hid: use dev_groups and not dev_attrs for bus_type
...
Pull tty/serial updates from Greg KH:
"Here is the large tty/serial patchset for 4.13-rc1.
A lot of tty and serial driver updates are in here, along with some
fixups for some __get/put_user usages that were reported. Nothing
huge, just lots of development by a number of different developers,
full details in the shortlog.
All of these have been in linux-next for a while"
* tag 'tty-4.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (71 commits)
tty: serial: lpuart: add a more accurate baud rate calculation method
tty: serial: lpuart: add earlycon support for imx7ulp
tty: serial: lpuart: add imx7ulp support
dt-bindings: serial: fsl-lpuart: add i.MX7ULP support
tty: serial: lpuart: add little endian 32 bit register support
tty: serial: lpuart: refactor lpuart32_{read|write} prototype
tty: serial: lpuart: introduce lpuart_soc_data to represent SoC property
serial: imx-serial - move DMA buffer configuration to DT
serial: imx: Enable RTSD only when needed
serial: imx: Remove unused members from imx_port struct
serial: 8250: 8250_omap: Fix race b/w dma completion and RX timeout
serial: 8250: Fix THRE flag usage for CAP_MINI
tty/serial: meson_uart: update to stable bindings
dt-bindings: serial: Add bindings for the Amlogic Meson UARTs
serial: Delete dead code for CIR serial ports
serial: sirf: make of_device_ids const
serial/mpsc: switch to dma_alloc_attrs
tty: serial: Add Actions Semi Owl UART earlycon
dt-bindings: serial: Document Actions Semi Owl UARTs
tty/serial: atmel: make the driver DT only
...
Pull staging/IIO updates from Greg KH:
"Here's the large set of staging and iio driver patches for 4.13-rc1.
After over 500 patches, we removed about 200 more lines of code than
we added, not great, but we added some new IIO drivers for unsupported
hardware, so it's an overall win.
Also here are lots of small fixes, and some tty core api additions
(with the tty maintainer's ack) for the speakup drivers, those are
finally getting some much needed cleanups and are looking much better
now than before. Full details in the shortlog.
All of these have been in linux-next for a while with no reported
issues"
* tag 'staging-4.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (529 commits)
staging: lustre: replace kmalloc with kmalloc_array
Staging: ion: fix code style warning from NULL comparisons
staging: fsl-mc: make dprc.h header private
staging: fsl-mc: move mc-cmd.h contents in the public header
staging: fsl-mc: move mc-sys.h contents in the public header
staging: fsl-mc: fix a few implicit includes
staging: fsl-mc: remove dpmng API files
staging: fsl-mc: move rest of mc-bus.h to private header
staging: fsl-mc: move couple of definitions to public header
staging: fsl-mc: move irq domain creation prototype to public header
staging: fsl-mc: turn several exported functions static
staging: fsl-mc: delete prototype of unimplemented function
staging: fsl-mc: delete duplicated function prototypes
staging: fsl-mc: decouple the mc-bus public headers from dprc.h
staging: fsl-mc: drop useless #includes
staging: fsl-mc: be consistent when checking strcmp() return
staging: fsl-mc: move comparison before strcmp() call
staging: speakup: make function ser_to_dev static
staging: ks7010: fix spelling mistake: "errror" -> "error"
staging: rtl8192e: fix spelling mistake: "respose" -> "response"
...
Pull USB/PHY updates from Greg KH:
"Here is the big patchset of USB and PHY driver updates for 4.13-rc1.
On the PHY side, they decided to move files around to "make things
easier" in their tree. Hopefully that wasn't a mistake, but in
linux-next testing, we haven't had any reported problems.
There's the usual set of gadget and xhci and musb updates in here as
well, along with a number of smaller updates for a raft of different
USB drivers. Full details in the shortlog, nothing really major.
All of these have been in linux-next for a while with no reported
issues"
* tag 'usb-4.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (173 commits)
Add USB quirk for HVR-950q to avoid intermittent device resets
USB hub_probe: rework ugly goto-into-compound-statement
usb: host: ohci-pxa27x: Handle return value of clk_prepare_enable
USB: serial: cp210x: add ID for CEL EM3588 USB ZigBee stick
usbip: Fix uninitialized variable bug in vhci
usb: core: read USB ports from DT in the usbport LED trigger driver
dt-bindings: leds: document new trigger-sources property
usb: typec: ucsi: Add ACPI driver
usb: typec: Add support for UCSI interface
usb: musb: compress return logic into one line
USB: serial: propagate late probe errors
USB: serial: refactor port endpoint setup
usb: musb: tusb6010_omap: Convert to DMAengine API
ARM: OMAP2+: DMA: Add slave map entries for 24xx external request lines
usb: musb: tusb6010: Handle DMA TX completion in DMA callback as well
usb: musb: tusb6010_omap: Allocate DMA channels upfront
usb: musb: tusb6010_omap: Create new struct for DMA data/parameters
usb: musb: tusb6010_omap: Use one musb_ep_select call in tusb_omap_dma_program
usb: musb: tusb6010: Add MUSB_G_NO_SKB_RESERVE to quirks
usb: musb: Add quirk to avoid skb reserve in gadget mode
...
Pull SMP hotplug updates from Thomas Gleixner:
"This update is primarily a cleanup of the CPU hotplug locking code.
The hotplug locking mechanism is an open coded RWSEM, which allows
recursive locking. The main problem with that is the recursive nature
as it evades the full lockdep coverage and hides potential deadlocks.
The rework replaces the open coded RWSEM with a percpu RWSEM and
establishes full lockdep coverage that way.
The bulk of the changes fix up recursive locking issues and address
the now fully reported potential deadlocks all over the place. Some of
these deadlocks have been observed in the RT tree, but on mainline the
probability was low enough to hide them away."
* 'smp-hotplug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (37 commits)
cpu/hotplug: Constify attribute_group structures
powerpc: Only obtain cpu_hotplug_lock if called by rtasd
ARM/hw_breakpoint: Fix possible recursive locking for arch_hw_breakpoint_init
cpu/hotplug: Remove unused check_for_tasks() function
perf/core: Don't release cred_guard_mutex if not taken
cpuhotplug: Link lock stacks for hotplug callbacks
acpi/processor: Prevent cpu hotplug deadlock
sched: Provide is_percpu_thread() helper
cpu/hotplug: Convert hotplug locking to percpu rwsem
s390: Prevent hotplug rwsem recursion
arm: Prevent hotplug rwsem recursion
arm64: Prevent cpu hotplug rwsem recursion
kprobes: Cure hotplug lock ordering issues
jump_label: Reorder hotplug lock and jump_label_lock
perf/tracing/cpuhotplug: Fix locking order
ACPI/processor: Use cpu_hotplug_disable() instead of get_online_cpus()
PCI: Replace the racy recursion prevention
PCI: Use cpu_hotplug_disable() instead of get_online_cpus()
perf/x86/intel: Drop get_online_cpus() in intel_snb_check_microcode()
x86/perf: Drop EXPORT of perf_check_microcode
...
Pull irq updates from Thomas Gleixner:
"The irq department delivers:
- Expand the generic infrastructure handling the irq migration on CPU
hotplug and convert X86 over to it. (Thomas Gleixner)
Aside of consolidating code this is a preparatory change for:
- Finalizing the affinity management for multi-queue devices. The
main change here is to shut down interrupts which are affine to a
outgoing CPU and reenabling them when the CPU comes online again.
That avoids moving interrupts pointlessly around and breaking and
reestablishing affinities for no value. (Christoph Hellwig)
Note: This contains also the BLOCK-MQ and NVME changes which depend
on the rework of the irq core infrastructure. Jens acked them and
agreed that they should go with the irq changes.
- Consolidation of irq domain code (Marc Zyngier)
- State tracking consolidation in the core code (Jeffy Chen)
- Add debug infrastructure for hierarchical irq domains (Thomas
Gleixner)
- Infrastructure enhancement for managing generic interrupt chips via
devmem (Bartosz Golaszewski)
- Constification work all over the place (Tobias Klauser)
- Two new interrupt controller drivers for MVEBU (Thomas Petazzoni)
- The usual set of fixes, updates and enhancements all over the
place"
* 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (112 commits)
irqchip/or1k-pic: Fix interrupt acknowledgement
irqchip/irq-mvebu-gicp: Allocate enough memory for spi_bitmap
irqchip/gic-v3: Fix out-of-bound access in gic_set_affinity
nvme: Allocate queues for all possible CPUs
blk-mq: Create hctx for each present CPU
blk-mq: Include all present CPUs in the default queue mapping
genirq: Avoid unnecessary low level irq function calls
genirq: Set irq masked state when initializing irq_desc
genirq/timings: Add infrastructure for estimating the next interrupt arrival time
genirq/timings: Add infrastructure to track the interrupt timings
genirq/debugfs: Remove pointless NULL pointer check
irqchip/gic-v3-its: Don't assume GICv3 hardware supports 16bit INTID
irqchip/gic-v3-its: Add ACPI NUMA node mapping
irqchip/gic-v3-its-platform-msi: Make of_device_ids const
irqchip/gic-v3-its: Make of_device_ids const
irqchip/irq-mvebu-icu: Add new driver for Marvell ICU
irqchip/irq-mvebu-gicp: Add new driver for Marvell GICP
dt-bindings/interrupt-controller: Add DT binding for the Marvell ICU
genirq/irqdomain: Remove auto-recursive hierarchy support
irqchip/MSI: Use irq_domain_update_bus_token instead of an open coded access
...
Pull timer updates from Thomas Gleixner:
"A rather large update for timers/timekeeping:
- compat syscall consolidation (Al Viro)
- Posix timer consolidation (Christoph Helwig / Thomas Gleixner)
- Cleanup of the device tree based initialization for clockevents and
clocksources (Daniel Lezcano)
- Consolidation of the FTTMR010 clocksource/event driver (Linus
Walleij)
- The usual set of small fixes and updates all over the place"
* 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (93 commits)
timers: Make the cpu base lock raw
clocksource/drivers/mips-gic-timer: Fix an error code in 'gic_clocksource_of_init()'
clocksource/drivers/fsl_ftm_timer: Unmap region obtained by of_iomap
clocksource/drivers/tcb_clksrc: Make IO endian agnostic
clocksource/drivers/sun4i: Switch to the timer-of common init
clocksource/drivers/timer-of: Fix invalid iomap check
Revert "ktime: Simplify ktime_compare implementation"
clocksource/drivers: Fix uninitialized variable use in timer_of_init
kselftests: timers: Add test for frequency step
kselftests: timers: Fix inconsistency-check to not ignore first timestamp
time: Add warning about imminent deprecation of CONFIG_GENERIC_TIME_VSYSCALL_OLD
time: Clean up CLOCK_MONOTONIC_RAW time handling
posix-cpu-timers: Make timespec to nsec conversion safe
itimer: Make timeval to nsec conversion range limited
timers: Fix parameter description of try_to_del_timer_sync()
ktime: Simplify ktime_compare implementation
clocksource/drivers/fttmr010: Factor out clock read code
clocksource/drivers/fttmr010: Implement delay timer
clocksource/drivers: Add timer-of common init routine
clocksource/drivers/tcb_clksrc: Save timer context on suspend/resume
...
Pull m68k updates from Geert Uytterhoeven:
- NuBus improvements and cleanups
- defconfig updates
- Fix debugger syscall restart interactions, leading to the global
removal of ptrace_signal_deliver()
* tag 'm68k-for-v4.13-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k:
m68k: Remove ptrace_signal_deliver
m68k/defconfig: Update defconfigs for v4.12-rc1
nubus: Fix pointer validation
nubus: Remove slot zero probe
Pull x86 mm updates from Ingo Molnar:
"The main changes in this cycle were:
- Continued work to add support for 5-level paging provided by future
Intel CPUs. In particular we switch the x86 GUP code to the generic
implementation. (Kirill A. Shutemov)
- Continued work to add PCID CPU support to native kernels as well.
In this round most of the focus is on reworking/refreshing the TLB
flush infrastructure for the upcoming PCID changes. (Andy
Lutomirski)"
* 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (34 commits)
x86/mm: Delete a big outdated comment about TLB flushing
x86/mm: Don't reenter flush_tlb_func_common()
x86/KASLR: Fix detection 32/64 bit bootloaders for 5-level paging
x86/ftrace: Exclude functions in head64.c from function-tracing
x86/mmap, ASLR: Do not treat unlimited-stack tasks as legacy mmap
x86/mm: Remove reset_lazy_tlbstate()
x86/ldt: Simplify the LDT switching logic
x86/boot/64: Put __startup_64() into .head.text
x86/mm: Add support for 5-level paging for KASLR
x86/mm: Make kernel_physical_mapping_init() support 5-level paging
x86/mm: Add sync_global_pgds() for configuration with 5-level paging
x86/boot/64: Add support of additional page table level during early boot
x86/boot/64: Rename init_level4_pgt and early_level4_pgt
x86/boot/64: Rewrite startup_64() in C
x86/boot/compressed: Enable 5-level paging during decompression stage
x86/boot/efi: Define __KERNEL32_CS GDT on 64-bit configurations
x86/boot/efi: Fix __KERNEL_CS definition of GDT entry on 64-bit configurations
x86/boot/efi: Cleanup initialization of GDT entries
x86/asm: Fix comment in return_from_SYSCALL_64()
x86/mm/gup: Switch GUP to the generic get_user_page_fast() implementation
...
Pull scheduler updates from Ingo Molnar:
"The main changes in this cycle were:
- Add the SYSTEM_SCHEDULING bootup state to move various scheduler
debug checks earlier into the bootup. This turns silent and
sporadically deadly bugs into nice, deterministic splats. Fix some
of the splats that triggered. (Thomas Gleixner)
- A round of restructuring and refactoring of the load-balancing and
topology code (Peter Zijlstra)
- Another round of consolidating ~20 of incremental scheduler code
history: this time in terms of wait-queue nomenclature. (I didn't
get much feedback on these renaming patches, and we can still
easily change any names I might have misplaced, so if anyone hates
a new name, please holler and I'll fix it.) (Ingo Molnar)
- sched/numa improvements, fixes and updates (Rik van Riel)
- Another round of x86/tsc scheduler clock code improvements, in hope
of making it more robust (Peter Zijlstra)
- Improve NOHZ behavior (Frederic Weisbecker)
- Deadline scheduler improvements and fixes (Luca Abeni, Daniel
Bristot de Oliveira)
- Simplify and optimize the topology setup code (Lauro Ramos
Venancio)
- Debloat and decouple scheduler code some more (Nicolas Pitre)
- Simplify code by making better use of llist primitives (Byungchul
Park)
- ... plus other fixes and improvements"
* 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (103 commits)
sched/cputime: Refactor the cputime_adjust() code
sched/debug: Expose the number of RT/DL tasks that can migrate
sched/numa: Hide numa_wake_affine() from UP build
sched/fair: Remove effective_load()
sched/numa: Implement NUMA node level wake_affine()
sched/fair: Simplify wake_affine() for the single socket case
sched/numa: Override part of migrate_degrades_locality() when idle balancing
sched/rt: Move RT related code from sched/core.c to sched/rt.c
sched/deadline: Move DL related code from sched/core.c to sched/deadline.c
sched/cpuset: Only offer CONFIG_CPUSETS if SMP is enabled
sched/fair: Spare idle load balancing on nohz_full CPUs
nohz: Move idle balancer registration to the idle path
sched/loadavg: Generalize "_idle" naming to "_nohz"
sched/core: Drop the unused try_get_task_struct() helper function
sched/fair: WARN() and refuse to set buddy when !se->on_rq
sched/debug: Fix SCHED_WARN_ON() to return a value on !CONFIG_SCHED_DEBUG as well
sched/wait: Disambiguate wq_entry->task_list and wq_head->task_list naming
sched/wait: Move bit_wait_table[] and related functionality from sched/core.c to sched/wait_bit.c
sched/wait: Split out the wait_bit*() APIs from <linux/wait.h> into <linux/wait_bit.h>
sched/wait: Re-adjust macro line continuation backslashes in <linux/wait.h>
...
Pull locking updates from Ingo Molnar:
"The main changes in this cycle were:
- Add CONFIG_REFCOUNT_FULL=y to allow the disabling of the 'full'
(robustness checked) refcount_t implementation with slightly lower
runtime overhead. (Kees Cook)
The lighter weight variant is the default. The two variants use the
same API. Having this variant was a precondition by some
maintainers to merge refcount_t cleanups.
- Add lockdep support for rtmutexes (Peter Zijlstra)
- liblockdep fixes and improvements (Sasha Levin, Ben Hutchings)
- ... misc fixes and improvements"
* 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (30 commits)
locking/refcount: Remove the half-implemented refcount_sub() API
locking/refcount: Create unchecked atomic_t implementation
locking/rtmutex: Don't initialize lockdep when not required
locking/selftest: Add RT-mutex support
locking/selftest: Remove the bad unlock ordering test
rt_mutex: Add lockdep annotations
MAINTAINERS: Claim atomic*_t maintainership
locking/x86: Remove the unused atomic_inc_short() methd
tools/lib/lockdep: Remove private kernel headers
tools/lib/lockdep: Hide liblockdep output from test results
tools/lib/lockdep: Add dummy current_gfp_context()
tools/include: Add IS_ERR_OR_NULL to err.h
tools/lib/lockdep: Add empty __is_[module,kernel]_percpu_address
tools/lib/lockdep: Include err.h
tools/include: Add (mostly) empty include/linux/sched/mm.h
tools/lib/lockdep: Use LDFLAGS
tools/lib/lockdep: Remove double-quotes from soname
tools/lib/lockdep: Fix object file paths used in an out-of-tree build
tools/lib/lockdep: Fix compilation for 4.11
tools/lib/lockdep: Don't mix fd-based and stream IO
...
Pull EFI updates from Ingo Molnar:
"The main changes in this cycle were:
- Rework the EFI capsule loader to allow for workarounds for
non-compliant firmware (Ard Biesheuvel)
- Implement a capsule loader quirk for Quark X102x (Jan Kiszka)
- Enable SMBIOS/DMI support for the ARM architecture (Ard Biesheuvel)
- Add CONFIG_EFI_PGT_DUMP=y support for x86-32 and kexec (Sai
Praneeth)
- Fixes for EFI support for Xen dom0 guests running under x86-64
hosts (Daniel Kiper)"
* 'efi-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/xen/efi: Initialize only the EFI struct members used by Xen
efi: Process the MEMATTR table only if EFI_MEMMAP is enabled
efi/arm: Enable DMI/SMBIOS
x86/efi: Extend CONFIG_EFI_PGT_DUMP support to x86_32 and kexec as well
efi/efi_test: Use memdup_user() helper
efi/capsule: Add support for Quark security header
efi/capsule-loader: Use page addresses rather than struct page pointers
efi/capsule-loader: Redirect calls to efi_capsule_setup_info() via weak alias
efi/capsule: Remove NULL test on kmap()
efi/capsule-loader: Use a cached copy of the capsule header
efi/capsule: Adjust return type of efi_capsule_setup_info()
efi/capsule: Clean up pr_err/_info() messages
efi/capsule: Remove pr_debug() on ENOMEM or EFAULT
efi/capsule: Fix return code on failing kmap/vmap
Pull RCU updates from Ingo Molnar:
"The sole purpose of these changes is to shrink and simplify the RCU
code base, which has suffered from creeping bloat over the past couple
of years. The end result is a net removal of ~2700 lines of code:
79 files changed, 1496 insertions(+), 4211 deletions(-)
Plus there's a marked reduction in the Kconfig space complexity as
well, here's the number of matches on 'grep RCU' in the .config:
before after
x86-defconfig 17 15
x86-allmodconfig 33 20"
* 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (86 commits)
rcu: Remove RCU CPU stall warnings from Tiny RCU
rcu: Remove event tracing from Tiny RCU
rcu: Move RCU debug Kconfig options to kernel/rcu
rcu: Move RCU non-debug Kconfig options to kernel/rcu
rcu: Eliminate NOCBs CPU-state Kconfig options
rcu: Remove debugfs tracing
srcu: Remove Classic SRCU
srcu: Fix rcutorture-statistics typo
rcu: Remove SPARSE_RCU_POINTER Kconfig option
rcu: Remove the now-obsolete PROVE_RCU_REPEATEDLY Kconfig option
rcu: Remove typecheck() from RCU locking wrapper functions
rcu: Remove #ifdef moving rcu_end_inkernel_boot from rcupdate.h
rcu: Remove nohz_full full-system-idle state machine
rcu: Remove the RCU_KTHREAD_PRIO Kconfig option
rcu: Remove *_SLOW_* Kconfig options
srcu: Use rnp->lock wrappers to replace explicit memory barriers
rcu: Move rnp->lock wrappers for SRCU use
rcu: Convert rnp->lock wrappers to macros for SRCU use
rcu: Refactor #includes from include/linux/rcupdate.h
bcm47xx: Fix build regression
...
Pull core block/IO updates from Jens Axboe:
"This is the main pull request for the block layer for 4.13. Not a huge
round in terms of features, but there's a lot of churn related to some
core cleanups.
Note this depends on the UUID tree pull request, that Christoph
already sent out.
This pull request contains:
- A series from Christoph, unifying the error/stats codes in the
block layer. We now use blk_status_t everywhere, instead of using
different schemes for different places.
- Also from Christoph, some cleanups around request allocation and IO
scheduler interactions in blk-mq.
- And yet another series from Christoph, cleaning up how we handle
and do bounce buffering in the block layer.
- A blk-mq debugfs series from Bart, further improving on the support
we have for exporting internal information to aid debugging IO
hangs or stalls.
- Also from Bart, a series that cleans up the request initialization
differences across types of devices.
- A series from Goldwyn Rodrigues, allowing the block layer to return
failure if we will block and the user asked for non-blocking.
- Patch from Hannes for supporting setting loop devices block size to
that of the underlying device.
- Two series of patches from Javier, fixing various issues with
lightnvm, particular around pblk.
- A series from me, adding support for write hints. This comes with
NVMe support as well, so applications can help guide data placement
on flash to improve performance, latencies, and write
amplification.
- A series from Ming, improving and hardening blk-mq support for
stopping/starting and quiescing hardware queues.
- Two pull requests for NVMe updates. Nothing major on the feature
side, but lots of cleanups and bug fixes. From the usual crew.
- A series from Neil Brown, greatly improving the bio rescue set
support. Most notably, this kills the bio rescue work queues, if we
don't really need them.
- Lots of other little bug fixes that are all over the place"
* 'for-4.13/block' of git://git.kernel.dk/linux-block: (217 commits)
lightnvm: pblk: set line bitmap check under debug
lightnvm: pblk: verify that cache read is still valid
lightnvm: pblk: add initialization check
lightnvm: pblk: remove target using async. I/Os
lightnvm: pblk: use vmalloc for GC data buffer
lightnvm: pblk: use right metadata buffer for recovery
lightnvm: pblk: schedule if data is not ready
lightnvm: pblk: remove unused return variable
lightnvm: pblk: fix double-free on pblk init
lightnvm: pblk: fix bad le64 assignations
nvme: Makefile: remove dead build rule
blk-mq: map all HWQ also in hyperthreaded system
nvmet-rdma: register ib_client to not deadlock in device removal
nvme_fc: fix error recovery on link down.
nvmet_fc: fix crashes on bad opcodes
nvme_fc: Fix crash when nvme controller connection fails.
nvme_fc: replace ioabort msleep loop with completion
nvme_fc: fix double calls to nvme_cleanup_cmd()
nvme-fabrics: verify that a controller returns the correct NQN
nvme: simplify nvme_dev_attrs_are_visible
...
Pull uuid subsystem from Christoph Hellwig:
"This is the new uuid subsystem, in which Amir, Andy and I have started
consolidating our uuid/guid helpers and improving the types used for
them. Note that various other subsystems have pulled in this tree, so
I'd like it to go in early.
UUID/GUID summary:
- introduce the new uuid_t/guid_t types that are going to replace the
somewhat confusing uuid_be/uuid_le types and make the terminology
fit the various specs, as well as the userspace libuuid library.
(me, based on a previous version from Amir)
- consolidated generic uuid/guid helper functions lifted from XFS and
libnvdimm (Amir and me)
- conversions to the new types and helpers (Amir, Andy and me)"
* tag 'uuid-for-4.13' of git://git.infradead.org/users/hch/uuid: (34 commits)
ACPI: hns_dsaf_acpi_dsm_guid can be static
mmc: sdhci-pci: make guid intel_dsm_guid static
uuid: Take const on input of uuid_is_null() and guid_is_null()
thermal: int340x_thermal: fix compile after the UUID API switch
thermal: int340x_thermal: Switch to use new generic UUID API
acpi: always include uuid.h
ACPI: Switch to use generic guid_t in acpi_evaluate_dsm()
ACPI / extlog: Switch to use new generic UUID API
ACPI / bus: Switch to use new generic UUID API
ACPI / APEI: Switch to use new generic UUID API
acpi, nfit: Switch to use new generic UUID API
MAINTAINERS: add uuid entry
tmpfs: generate random sb->s_uuid
scsi_debug: switch to uuid_t
nvme: switch to uuid_t
sysctl: switch to use uuid_t
partitions/ldm: switch to use uuid_t
overlayfs: use uuid_t instead of uuid_be
fs: switch ->s_uuid to uuid_t
ima/policy: switch to use uuid_t
...
* acpi-pm:
PM / core: Drop run_wake flag from struct dev_pm_info
PCI / PM: Simplify device wakeup settings code
PCI / PM: Drop pme_interrupt flag from struct pci_dev
ACPI / PM: Consolidate device wakeup settings code
ACPI / PM: Drop run_wake from struct acpi_device_wakeup_flags
ACPI / sleep: EC-based wakeup from suspend-to-idle on recent systems
platform: x86: intel-hid: Wake up the system from suspend-to-idle
platform: x86: intel-vbtn: Wake up the system from suspend-to-idle
ACPI / PM: Ignore spurious SCI wakeups from suspend-to-idle
platform/x86: Add driver for ACPI INT0002 Virtual GPIO device
PCI / PM: Restore PME Enable if skipping wakeup setup
PM / sleep: Print timing information if debug is enabled
ACPI / PM: Clean up device wakeup enable/disable code
ACPI / PM: Change log level of wakeup-related message
USB / PCI / PM: Allow the PCI core to do the resume cleanup
ACPI / PM: Run wakeup notify handlers synchronously
Conflicts:
drivers/base/power/main.c
* pm-cpufreq:
cpufreq / CPPC: Initialize policy->min to lowest nonlinear performance
cpufreq: sfi: make freq_table static
cpufreq: exynos5440: Fix inconsistent indenting
cpufreq: imx6q: imx6ull should use the same flow as imx6ul
cpufreq: dt: Add support for hi3660
* intel_pstate:
cpufreq: Update scaling_cur_freq documentation
cpufreq: intel_pstate: Clean up after performance governor changes
intel_pstate: skip scheduler hook when in "performance" mode
intel_pstate: delete scheduler hook in HWP mode
x86: use common aperfmperf_khz_on_cpu() to calculate KHz using APERF/MPERF
cpufreq: intel_pstate: Remove max/min fractions to limit performance
x86: do not use cpufreq_quick_get() for /proc/cpuinfo "cpu MHz"
* pm-cpuidle:
cpuidle: menu: allow state 0 to be disabled
intel_idle: Use more common logging style
x86/ACPI/cstate: Allow ACPI C1 FFH MWAIT use on AMD systems
ARM: cpuidle: Support asymmetric idle definition
Wen reports significant memory leaks with DIF and O_DIRECT:
"With nvme devive + T10 enabled, On a system it has 256GB and started
logging /proc/meminfo & /proc/slabinfo for every minute and in an hour
it increased by 15968128 kB or ~15+GB.. Approximately 256 MB / minute
leaking.
/proc/meminfo | grep SUnreclaim...
SUnreclaim: 6752128 kB
SUnreclaim: 6874880 kB
SUnreclaim: 7238080 kB
....
SUnreclaim: 22307264 kB
SUnreclaim: 22485888 kB
SUnreclaim: 22720256 kB
When testcases with T10 enabled call into __blkdev_direct_IO_simple,
code doesn't free memory allocated by bio_integrity_alloc. The patch
fixes the issue. HTX has been run with +60 hours without failure."
Since __blkdev_direct_IO_simple() allocates the bio on the stack, it
doesn't go through the regular bio free. This means that any ancillary
data allocated with the bio through the stack is not freed. Hence, we
can leak the integrity data associated with the bio, if the device is
using DIF/DIX.
Fix this by providing a bio_uninit() and export it, so that we can use
it to free this data. Note that this is a minimal fix for this issue.
Any current user of bio's that are allocated outside of
bio_alloc_bioset() suffers from this issue, most notably some drivers.
We will fix those in a more comprehensive patch for 4.13. This also
means that the commit marked as being fixed by this isn't the real
culprit, it's just the most obvious one out there.
Fixes: 542ff7bf18 ("block: new direct I/O implementation")
Reported-by: Wen Xiong <wenxiong@linux.vnet.ibm.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Some irq controllers have writeonly/multipurpose register layouts. In
those cases we read invalid data back. Here we add the option
mask_writeonly as masking option.
Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
The run_wake flag in struct dev_pm_info is used to indicate whether
or not the device is capable of generating remote wakeup signals at
run time (or in the system working state), but the distinction
between runtime remote wakeup and system wakeup signaling has always
been rather artificial. The only practical reason for it to exist
at the core level was that ACPI and PCI treated those two cases
differently, but that's not the case any more after recent changes.
For this reason, get rid of the run_wake flag and, when applicable,
use device_set_wakeup_capable() and device_can_wakeup() instead of
device_set_run_wake() and device_run_wake(), respectively.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
After previous changes it is not necessary to distinguish between
device wakeup for run time and device wakeup from system sleep states
any more, so rework the PCI device wakeup settings code accordingly.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
The pme_interrupt flag in struct pci_dev is set when PMEs generated
by the device are going to be signaled via root port PME interrupts.
Ironically enough, that information is only used by the code setting
up device wakeup through ACPI which returns as soon as it sees the
pme_interrupt flag set while setting up "remote runtime wakeup".
That is questionable, however, because in theory there may be PCIe
devices using out-of-band PME signaling under root ports handled
by the native PME code or devices requiring wakeup power setup to be
carried out by AML. For such devices, ACPI wakeup should be invoked
regardless of whether or not native PME signaling is used in general.
For this reason, drop the pme_interrupt flag and rework the code
using it which then allows the ACPI-based device wakeup handling
in PCI to be consolidated to use one code path for both "runtime
remote wakeup" and system wakeup (from sleep states).
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Only used inside the bounce code, and opencoding it makes it more obvious
what is going on.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This adds support for Directives in NVMe, particular for the Streams
directive. Support for Directives is a new feature in NVMe 1.3. It
allows a user to pass in information about where to store the data, so
that it the device can do so most effiently. If an application is
managing and writing data with different life times, mixing differently
retentioned data onto the same locations on flash can cause write
amplification to grow. This, in turn, will reduce performance and life
time of the device.
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Useful to verify that things are working the way they should.
Reading the file will return number of kb written with each
write hint. Writing the file will reset the statistics. No care
is taken to ensure that we don't race on updates.
Drivers will write to q->write_hints[] if they handle a given
write hint.
Reviewed-by: Andreas Dilger <adilger@dilger.ca>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
No functional changes in this patch, we just use up some holes
in the bio and request structures to define a write hint that
we psas down the stack.
Ensure that we don't merge requests that have different life time
hints assigned to them, and that we inherit the write hint when
cloning a bio.
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Define a set of write life time hints:
RWH_WRITE_LIFE_NOT_SET No hint information set
RWH_WRITE_LIFE_NONE No hints about write life time
RWH_WRITE_LIFE_SHORT Data written has a short life time
RWH_WRITE_LIFE_MEDIUM Data written has a medium life time
RWH_WRITE_LIFE_LONG Data written has a long life time
RWH_WRITE_LIFE_EXTREME Data written has an extremely long life time
The intent is for these values to be relative to each other, no
absolute meaning should be attached to these flag names.
Add an fcntl interface for querying these flags, and also for
setting them as well:
F_GET_RW_HINT Returns the read/write hint set on the
underlying inode.
F_SET_RW_HINT Set one of the above write hints on the
underlying inode.
F_GET_FILE_RW_HINT Returns the read/write hint set on the
file descriptor.
F_SET_FILE_RW_HINT Set one of the above write hints on the
file descriptor.
The user passes in a 64-bit pointer to get/set these values, and
the interface returns 0/-1 on success/error.
Sample program testing/implementing basic setting/getting of write
hints is below.
Add support for storing the write life time hint in the inode flags
and in struct file as well, and pass them to the kiocb flags. If
both a file and its corresponding inode has a write hint, then we
use the one in the file, if available. The file hint can be used
for sync/direct IO, for buffered writeback only the inode hint
is available.
This is in preparation for utilizing these hints in the block layer,
to guide on-media data placement.
/*
* writehint.c: get or set an inode write hint
*/
#include <stdio.h>
#include <fcntl.h>
#include <stdlib.h>
#include <unistd.h>
#include <stdbool.h>
#include <inttypes.h>
#ifndef F_GET_RW_HINT
#define F_LINUX_SPECIFIC_BASE 1024
#define F_GET_RW_HINT (F_LINUX_SPECIFIC_BASE + 11)
#define F_SET_RW_HINT (F_LINUX_SPECIFIC_BASE + 12)
#endif
static char *str[] = { "RWF_WRITE_LIFE_NOT_SET", "RWH_WRITE_LIFE_NONE",
"RWH_WRITE_LIFE_SHORT", "RWH_WRITE_LIFE_MEDIUM",
"RWH_WRITE_LIFE_LONG", "RWH_WRITE_LIFE_EXTREME" };
int main(int argc, char *argv[])
{
uint64_t hint;
int fd, ret;
if (argc < 2) {
fprintf(stderr, "%s: file <hint>\n", argv[0]);
return 1;
}
fd = open(argv[1], O_RDONLY);
if (fd < 0) {
perror("open");
return 2;
}
if (argc > 2) {
hint = atoi(argv[2]);
ret = fcntl(fd, F_SET_RW_HINT, &hint);
if (ret < 0) {
perror("fcntl: F_SET_RW_HINT");
return 4;
}
}
ret = fcntl(fd, F_GET_RW_HINT, &hint);
if (ret < 0) {
perror("fcntl: F_GET_RW_HINT");
return 3;
}
printf("%s: hint %s\n", argv[1], str[hint]);
close(fd);
return 0;
}
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
