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git://git.kernel.org/pub/scm/linux/kernel/git/jlayton/linux
Pull inode->i_version rework from Jeff Layton:
"This pile of patches is a rework of the inode->i_version field. We
have traditionally incremented that field on every inode data or
metadata change. Typically this increment needs to be logged on disk
even when nothing else has changed, which is rather expensive.
It turns out though that none of the consumers of that field actually
require this behavior. The only real requirement for all of them is
that it be different iff the inode has changed since the last time the
field was checked.
Given that, we can optimize away most of the i_version increments and
avoid dirtying inode metadata when the only change is to the i_version
and no one is querying it. Queries of the i_version field are rather
rare, so we can help write performance under many common workloads.
This patch series converts existing accesses of the i_version field to
a new API, and then converts all of the in-kernel filesystems to use
it. The last patch in the series then converts the backend
implementation to a scheme that optimizes away a large portion of the
metadata updates when no one is looking at it.
In my own testing this series significantly helps performance with
small I/O sizes. I also got this email for Christmas this year from
the kernel test robot (a 244% r/w bandwidth improvement with XFS over
DAX, with 4k writes):
https://lkml.org/lkml/2017/12/25/8
A few of the earlier patches in this pile are also flowing to you via
other trees (mm, integrity, and nfsd trees in particular)".
* tag 'iversion-v4.16-1' of git://git.kernel.org/pub/scm/linux/kernel/git/jlayton/linux: (22 commits)
fs: handle inode->i_version more efficiently
btrfs: only dirty the inode in btrfs_update_time if something was changed
xfs: avoid setting XFS_ILOG_CORE if i_version doesn't need incrementing
fs: only set S_VERSION when updating times if necessary
IMA: switch IMA over to new i_version API
xfs: convert to new i_version API
ufs: use new i_version API
ocfs2: convert to new i_version API
nfsd: convert to new i_version API
nfs: convert to new i_version API
ext4: convert to new i_version API
ext2: convert to new i_version API
exofs: switch to new i_version API
btrfs: convert to new i_version API
afs: convert to new i_version API
affs: convert to new i_version API
fat: convert to new i_version API
fs: don't take the i_lock in inode_inc_iversion
fs: new API for handling inode->i_version
ntfs: remove i_version handling
...
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Pull block updates from Jens Axboe:
"This is the main pull request for block IO related changes for the
4.16 kernel. Nothing major in this pull request, but a good amount of
improvements and fixes all over the map. This contains:
- BFQ improvements, fixes, and cleanups from Angelo, Chiara, and
Paolo.
- Support for SMR zones for deadline and mq-deadline from Damien and
Christoph.
- Set of fixes for bcache by way of Michael Lyle, including fixes
from himself, Kent, Rui, Tang, and Coly.
- Series from Matias for lightnvm with fixes from Hans Holmberg,
Javier, and Matias. Mostly centered around pblk, and the removing
rrpc 1.2 in preparation for supporting 2.0.
- A couple of NVMe pull requests from Christoph. Nothing major in
here, just fixes and cleanups, and support for command tracing from
Johannes.
- Support for blk-throttle for tracking reads and writes separately.
From Joseph Qi. A few cleanups/fixes also for blk-throttle from
Weiping.
- Series from Mike Snitzer that enables dm to register its queue more
logically, something that's alwways been problematic on dm since
it's a stacked device.
- Series from Ming cleaning up some of the bio accessor use, in
preparation for supporting multipage bvecs.
- Various fixes from Ming closing up holes around queue mapping and
quiescing.
- BSD partition fix from Richard Narron, fixing a problem where we
can't mount newer (10/11) FreeBSD partitions.
- Series from Tejun reworking blk-mq timeout handling. The previous
scheme relied on atomic bits, but it had races where we would think
a request had timed out if it to reused at the wrong time.
- null_blk now supports faking timeouts, to enable us to better
exercise and test that functionality separately. From me.
- Kill the separate atomic poll bit in the request struct. After
this, we don't use the atomic bits on blk-mq anymore at all. From
me.
- sgl_alloc/free helpers from Bart.
- Heavily contended tag case scalability improvement from me.
- Various little fixes and cleanups from Arnd, Bart, Corentin,
Douglas, Eryu, Goldwyn, and myself"
* 'for-4.16/block' of git://git.kernel.dk/linux-block: (186 commits)
block: remove smart1,2.h
nvme: add tracepoint for nvme_complete_rq
nvme: add tracepoint for nvme_setup_cmd
nvme-pci: introduce RECONNECTING state to mark initializing procedure
nvme-rdma: remove redundant boolean for inline_data
nvme: don't free uuid pointer before printing it
nvme-pci: Suspend queues after deleting them
bsg: use pr_debug instead of hand crafted macros
blk-mq-debugfs: don't allow write on attributes with seq_operations set
nvme-pci: Fix queue double allocations
block: Set BIO_TRACE_COMPLETION on new bio during split
blk-throttle: use queue_is_rq_based
block: Remove kblockd_schedule_delayed_work{,_on}()
blk-mq: Avoid that blk_mq_delay_run_hw_queue() introduces unintended delays
blk-mq: Rename blk_mq_request_direct_issue() into blk_mq_request_issue_directly()
lib/scatterlist: Fix chaining support in sgl_alloc_order()
blk-throttle: track read and write request individually
block: add bdev_read_only() checks to common helpers
block: fail op_is_write() requests to read-only partitions
blk-throttle: export io_serviced_recursive, io_service_bytes_recursive
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git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap
Pull regmap updates from Mark Brown:
"A very busy release for regmap, all fairly specialist stuff but
useful:
- Support for disabling locking from Bartosz Golaszewski, allowing
users that handle their own locking to save some overhead.
- Support for hwspinlocks in syscons in MFD from Baolin Wang, this is
going through the regmap tree since the first users turned up some
some cases that needed interface tweaks with 0 being used as a
syscon identifier.
- Support for devices with no read or write flag from Andrew F.
Davis.
- Basic support for devices on SoundWire buses from Vinod Koul"
* tag 'regmap-v4.16' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap:
mfd: syscon: Add hardware spinlock support
regmap: Allow empty read/write_flag_mask
regcache: flat: Un-inline index lookup from cache access
regmap: Add SoundWire bus support
regmap: Add one flag to indicate if a hwlock should be used
regmap: debugfs: document why we don't create the debugfs entries
regmap: debugfs: emit a debug message when locking is disabled
regmap: use proper part of work_buf for storing val
regmap: potentially duplicate the name string stored in regmap
regmap: Disable debugfs when locking is disabled
regmap: rename regmap_lock_unlock_empty() to regmap_lock_unlock_none()
regmap: allow to disable all locking mechanisms
regmap: Remove the redundant config to select hwspinlock
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git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator
Pull regulator updates from Mark Brown:
"This is a quiet release in terms of code volume but a fairly big one
in terms of framework changes - we've got one long awaited feature in
the form of runtime configuration of suspend and the start of coupled
regulator support too:
- Support for modifying the voltage and enable configuration devices
will have in suspend, contributed by Chunyan Zhang.
- Support for the Spreadtrum SC2731, contributed by Erick Chen.
- The start of changes to support coupled regulators from Maciej
Purski, the rest of the series should arrive for v4.17"
* tag 'regulator-v4.16' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator:
regulator: Fix build error
regulator: core: Refactor regulator_list_voltage()
regulator: core: Move of_find_regulator_by_node() to of_regulator.c
regulator: add PM suspend and resume hooks
regulator: empty the old suspend functions
regulator: leave one item to record whether regulator is enabled
regulator: make regulator voltage be an array to support more states
regulator: added support for suspend states
regulator: qcom_spmi: Use regmap helpers for enable/disable/is_enabled callback
regulator: sc2731: Fix defines for SC2731_WR_UNLOCK and SC2731_PWR_WR_PROT_VALUE
regulator: fix incorrect indentation of two assignment statements
regulator: sc2731: Add regulator driver to support Spreadtrum SC2731 PMIC
regulator: Add Spreadtrum SC2731 regulator documentation
regulator: Update code examples in documentation
MAINTAINERS: regulator: Add Documentation/power/regulator/
regulator: tps65218: Add NULL test for devm_kzalloc call
regulator: tps65218: Remove unused enum tps65218_regulators
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git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi
Pull spi updates from Mark Brown:
"Quite a quiet release for SPI, there are no changes at all to the core
and not that many changes to drivers. Highlights of those driver
changes include:
- SH MSIOF support for GPIO chip selects contributed by Geert
Uytterhoeven.
- Full duplex support for a3700 contributed by Maxime Chevallier.
- Support for DMA transfers on Atmel devices that require a bounce
buffer contributed by Radu Pirea"
* tag 'spi-v4.16' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: (31 commits)
spi: dw: Remove unused members from struct chip_data
spi: orion: Fix a resource leak if the optional "axi" clk is deferred
spi: a3700: Remove endianness swapping for full-duplex transfers
spi: a3700: Remove endianness swapping functions when accessing FIFOs
spi: a3700: Add full-duplex support
spi: a3700: Allow to enable or disable FIFO mode
spi: a3700: Set frequency limits at startup
spi: a3700: Clear DATA_OUT when performing a read
spi: orion: Fix clock resource by adding an optional bus clock
spi: s3c64xx: add SPDX identifier
spi: imx: do not access registers while clocks disabled
spi: atmel: Implements transfers with bounce buffer
spi: sh-msiof: Fix timeout failures for TX-only DMA transfers
spi: spi-fsl-dspi: account for const type of of_device_id.data
spi: bcm53xx: simplify reading SPI data
spi: sirf: account for const type of of_device_id.data
spi: pxa2xx: Use gpiod_put() not gpiod_free()
spi: pxa2xx: avoid redundant gpio_to_desc(desc_to_gpio()) round-trip
spi: sh-msiof: Document hardware limitations related to chip selects
spi: sh-msiof: Implement cs-gpios configuration
...
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Pull MMC updates from Ulf Hansson:
"There are two major achievements for MMC in this release, which
deserves to be specially highlighted.
First, we have converted the MMC block device from using the legacy
blk interface into using the modern blkmq interface. Not only do we
get all the nice effects from using blkmq, but it also means that new
fresh nice code replaces old rusty code. Great news to everybody that
cares about MMC/SD!
It should also be noted that converting to blkmq has not been trivial,
mostly because of that we have been carrying too much of MMC specific
optimizations for the I/O request path, rather than striving to move
these to the generic blk layer. Hopefully we won't be doing that
mistake, ever again.
Special thanks to Adrian Hunter (Intel) and to Linus Walleij (Linaro),
who both have been working on this for quite some time!
Second, on top of the blkmq deployment, we have enabled full support
the eMMC command queuing feature, introduced in the eMMC v.5.1 spec.
This also includes an implementation of a host driver library,
supporting the corresponding CQHCI HW. Ideally, those controllers that
supports CQHCI should only need some minor adaptations to make this
play.
So far the sdhci-pci driver for the Intel GLKs and the sdhci-of-arasan
driver used on Rockchip RK3399, have enabled support for eMMC command
queueing.
Worth to highlight is also that, implementing the eMMC command queuing
support has been a collaborative effort, as several people from
Codeaurora, Rockchip, Intel and Linaro have been involved. However,
the work has been driven by Adrian Hunter (Intel).
In some shadow of the above, here are the rest of the highlights:
MMC core:
- Don't remove non-removable cards during system suspend
- Add a slot-gpio helper to check capability of GPIO WP detection
MMC host:
- sdhci: Cleanups and improvements of some wakeup related code
- sdhci-pci-arasan: New variant to support Arasan PCI HW with integrated phy
- sdhci-acpi: Avoid broken UHS transfer modes on Intel CHT
- sdhci-acpi: Add support for ACPI HID of AMD Controller with HS400
- sdhci_f_sdh30: Add ACPI support
- sdhci-esdhc-imx: Enable/disable clock at runtime suspend/resume
- sdhci-of-esdhc: A few minor fixes
- mmci: Add support for new STM32 variant
- renesas_sdhi: enable R-Car D3 (r8a77995) support
- tmio/renesas_sdhi: Re-structuring, cleanups and modernizations"
* tag 'mmc-v4.16' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc: (96 commits)
mmc: mmci: fix error return code in mmci_probe()
mmc: davinci: suppress error message on EPROBE_DEFER
mmc: davinci: dont' use module_platform_driver_probe()
mmc: tmio: hide unused tmio_mmc_clk_disable/tmio_mmc_clk_enable functions
mmc: mmci: Add STM32 variant
mmc: mmci: Add support for setting pad type via pinctrl
mmc: mmci: Don't pretend all variants to have OPENDRAIN bit
mmc: mmci: Don't pretend all variants to have MCI_STARBITERR flag
mmc: mmci: Don't pretend all variants to have MMCIMASK1 register
mmc: tmio: refactor .get_ro hook
mmc: slot-gpio: add a helper to check capability of GPIO WP detection
mmc: tmio: remove dma_ops from tmio_mmc_host_probe() argument
mmc: tmio: move {tmio_}mmc_of_parse() to tmio_mmc_host_alloc()
mmc: tmio: move clk_enable/disable out of tmio_mmc_host_probe()
mmc: tmio: ioremap memory resource in tmio_mmc_host_alloc()
mmc: sh_mmcif: remove redundant initialization of 'opc'
mmc: sdhci: Rework sdhci_enable_irq_wakeups()
mmc: sdhci: Handle failure of enable_irq_wake()
mmc: sdhci: Stop exporting sdhci_enable_irq_wakeups()
mmc: sdhci-pci: Use device wakeup capability to determine MMC_PM_WAKE_SDIO_IRQ capability
...
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Pull MTD updates from Boris Brezillon:
"MTD core changes:
- Rework core functions to avoid duplicating generic checks in
NAND/OneNAND sub-layers
- Update the MAINTAINERS entry to reflect the fact that MTD
maintainers now use a single git tree
MTD driver changes:
- CFI: use macros instead of inline functions to limit stack usage
and make KASAN happy
NAND core changes:
- Fix NAND_CMD_NONE handling in nand_command[_lp]() hooks
- Introduce the ->exec_op() infrastructure
- Rework NAND buffers handling
- Fix ECC requirements for K9F4G08U0D
- Fix nand_do_read_oob() to return the number of bitflips
- Mark K9F1G08U0E as not supporting subpage writes
NAND driver changes:
- MTK: Rework the driver to support new IP versions
- OMAP OneNAND: Full rework to use new APIs (libgpio, dmaengine) and
fix DT support
- Marvell: Add a new driver to replace the pxa3xx one
SPI NOR core changes:
- Add support to new ISSI and Cypress/Spansion memory parts.
- Fix support of Micron memories by checking error bits in the FSR.
- Fix update of block-protection bits by reading back the SR.
- Restore the internal state of the SPI flash memory when removing
the device.
SPI NOR driver changes:
- Maintenance for Freescale, Intel and Metiatek drivers.
- Add support of the direct access mode for the Cadence QSPI
controller"
* tag 'mtd/for-4.16' of git://git.infradead.org/linux-mtd: (93 commits)
mtd: nand: sunxi: Fix ECC strength choice
mtd: nand: gpmi: Fix subpage reads
mtd: nand: Fix build issues due to an anonymous union
mtd: nand: marvell: Fix missing memory allocation modifier
mtd: nand: marvell: remove redundant variable 'oob_len'
mtd: nand: marvell: fix spelling mistake: "suceed"-> "succeed"
mtd: onenand: omap2: Remove redundant dev_err call in omap2_onenand_probe()
mtd: Remove duplicate checks on mtd_oob_ops parameter
mtd: Fallback to ->_read/write_oob() when ->_read/write() is missing
mtd: mtdpart: Make ECC stat handling consistent
mtd: onenand: omap2: print resource using %pR format string
mtd: mtk-nor: modify functions' name more generally
mtd: onenand: samsung: remove incorrect __iomem annotation
MAINTAINERS: Add entry for Marvell NAND controller driver
ARM: OMAP2+: Remove gpmc-onenand
mtd: onenand: omap2: Configure driver from DT
mtd: onenand: omap2: Decouple DMA enabling from INT pin availability
mtd: onenand: omap2: Do not make delay for GPIO OMAP3 specific
mtd: onenand: omap2: Convert to use dmaengine for memcpy
mtd: onenand: omap2: Unify OMAP2 and OMAP3 DMA implementation
...
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git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd
Pull MFD updates from Lee Jones:
"New Drivers:
- Add support for RAVE Supervisory Processor
Moved drivers:
- Move Realtek Card Reader Driver to Misc
New Device Support:
- Add support for Pinctrl to axp20x
New Functionality:
- Add resume support to atmel-flexcom
Fix-ups:
- Split MFD (mfd) and userspace handlers (platform) in cros_ec
- Fix trivial (whitespace, spelling) issue(s) in pcf50633-core
- Clean-up error handling in ab8500-debugfs
- General tidying up in tmio_core
- Kconfig fix-ups for qcom-pm8xxx
- Licensing changes (SPDX) to stm32-lptimer, stm32-timers
- Device Tree fixups in mc13xxx
- Simplify/remove unused code in cros_ec_spi, axp20x, ti_am335x_tscadc,
kempld-core, intel_soc_pmic_core.c, ab8500-debugfs"
* tag 'mfd-next-4.16' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd: (32 commits)
mfd: lpc_ich: Do not touch SPI-NOR write protection bit on Apollo Lake
mfd: axp20x: Mark axp288 CHRG_BAK_CTRL register volatile
mfd: ab8500: Introduce DEFINE_SHOW_ATTRIBUTE() macro
atmel_flexcom: Support resuming after a chip reset
mfd: Remove duplicate includes
dt-bindings: mfd: mc13xxx: Add the unit address to sysled
mfd: stm32: Adopt SPDX identifier
mfd: axp20x: Add pinctrl cell for AXP813
mfd: pm8xxx: Make elegible for COMPILE_TEST
mfd: kempld-core: Use resource_size function on resource object
mfd: tmio: Move register macros to tmio_core.c
mfd: cros ec: spi: Simplify delay handling between SPI messages
mfd: palmas: Assign the right powerhold mask for tps65917
mfd: ab8500-debugfs: Use common error handling code in ab8500_print_modem_registers()
mfd: ti_am335x_tscadc: Remove redundant assignment to node
mfd: pcf50633: Fix spelling mistake: 'Falied' -> 'Failed'
dt-bindings: watchdog: Add bindings for RAVE SP watchdog driver
watchdog: Add RAVE SP watchdog driver
mfd: Add driver for RAVE Supervisory Processor
serdev: Introduce devm_serdev_device_open()
...
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git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management updates from Rafael Wysocki:
"This includes some infrastructure changes in the PM core, mostly
related to integration between runtime PM and system-wide suspend and
hibernation, plus some driver changes depending on them and fixes for
issues in that area which have become quite apparent recently.
Also included are changes making more x86-based systems use the Low
Power Sleep S0 _DSM interface by default, which turned out to be
necessary to handle power button wakeups from suspend-to-idle on
Surface Pro3.
On the cpufreq front we have fixes and cleanups in the core, some new
hardware support, driver updates and the removal of some unused code
from the CPU cooling thermal driver.
Apart from this, the Operating Performance Points (OPP) framework is
prepared to be used with power domains in the future and there is a
usual bunch of assorted fixes and cleanups.
Specifics:
- Define a PM driver flag allowing drivers to request that their
devices be left in suspend after system-wide transitions to the
working state if possible and add support for it to the PCI bus
type and the ACPI PM domain (Rafael Wysocki).
- Make the PM core carry out optimizations for devices with driver PM
flags set in some cases and make a few drivers set those flags
(Rafael Wysocki).
- Fix and clean up wrapper routines allowing runtime PM device
callbacks to be re-used for system-wide PM, change the generic
power domains (genpd) framework to stop using those routines
incorrectly and fix up a driver depending on that behavior of genpd
(Rafael Wysocki, Ulf Hansson, Geert Uytterhoeven).
- Fix and clean up the PM core's device wakeup framework and
re-factor system-wide PM core code related to device wakeup
(Rafael Wysocki, Ulf Hansson, Brian Norris).
- Make more x86-based systems use the Low Power Sleep S0 _DSM
interface by default (to fix power button wakeup from
suspend-to-idle on Surface Pro3) and add a kernel command line
switch to tell it to ignore the system sleep blacklist in the ACPI
core (Rafael Wysocki).
- Fix a race condition related to cpufreq governor module removal and
clean up the governor management code in the cpufreq core (Rafael
Wysocki).
- Drop the unused generic code related to the handling of the static
power energy usage model in the CPU cooling thermal driver along
with the corresponding documentation (Viresh Kumar).
- Add mt2712 support to the Mediatek cpufreq driver (Andrew-sh
Cheng).
- Add a new operating point to the imx6ul and imx6q cpufreq drivers
and switch the latter to using clk_bulk_get() (Anson Huang, Dong
Aisheng).
- Add support for multiple regulators to the TI cpufreq driver along
with a new DT binding related to that and clean up that driver
somewhat (Dave Gerlach).
- Fix a powernv cpufreq driver regression leading to incorrect CPU
frequency reporting, fix that driver to deal with non-continguous
P-states correctly and clean it up (Gautham Shenoy, Shilpasri
Bhat).
- Add support for frequency scaling on Armada 37xx SoCs through the
generic DT cpufreq driver (Gregory CLEMENT).
- Fix error code paths in the mvebu cpufreq driver (Gregory CLEMENT).
- Fix a transition delay setting regression in the longhaul cpufreq
driver (Viresh Kumar).
- Add Skylake X (server) support to the intel_pstate cpufreq driver
and clean up that driver somewhat (Srinivas Pandruvada).
- Clean up the cpufreq statistics collection code (Viresh Kumar).
- Drop cluster terminology and dependency on physical_package_id from
the PSCI driver and drop dependency on arm_big_little from the SCPI
cpufreq driver (Sudeep Holla).
- Add support for system-wide suspend and resume to the RAPL power
capping driver and drop a redundant semicolon from it (Zhen Han,
Luis de Bethencourt).
- Make SPI domain validation (in the SCSI SPI transport driver) and
system-wide suspend mutually exclusive as they rely on the same
underlying mechanism and cannot be carried out at the same time
(Bart Van Assche).
- Fix the computation of the amount of memory to preallocate in the
hibernation core and clean up one function in there (Rainer Fiebig,
Kyungsik Lee).
- Prepare the Operating Performance Points (OPP) framework for being
used with power domains and clean up one function in it (Viresh
Kumar, Wei Yongjun).
- Clean up the generic sysfs interface for device PM (Andy
Shevchenko).
- Fix several minor issues in power management frameworks and clean
them up a bit (Arvind Yadav, Bjorn Andersson, Geert Uytterhoeven,
Gustavo Silva, Julia Lawall, Luis de Bethencourt, Paul Gortmaker,
Sergey Senozhatsky, gaurav jindal).
- Make it easier to disable PM via Kconfig (Mark Brown).
- Clean up the cpupower and intel_pstate_tracer utilities (Doug
Smythies, Laura Abbott)"
* tag 'pm-4.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (89 commits)
PCI / PM: Remove spurious semicolon
cpufreq: scpi: remove arm_big_little dependency
drivers: psci: remove cluster terminology and dependency on physical_package_id
powercap: intel_rapl: Fix trailing semicolon
dmaengine: rcar-dmac: Make DMAC reinit during system resume explicit
PM / runtime: Allow no callbacks in pm_runtime_force_suspend|resume()
PM / hibernate: Drop unused parameter of enough_swap
PM / runtime: Check ignore_children in pm_runtime_need_not_resume()
PM / runtime: Rework pm_runtime_force_suspend/resume()
PM / genpd: Stop/start devices without pm_runtime_force_suspend/resume()
cpufreq: powernv: Dont assume distinct pstate values for nominal and pmin
cpufreq: intel_pstate: Add Skylake servers support
cpufreq: intel_pstate: Replace bxt_funcs with core_funcs
platform/x86: surfacepro3: Support for wakeup from suspend-to-idle
ACPI / PM: Use Low Power S0 Idle on more systems
PM / wakeup: Print warn if device gets enabled as wakeup source during sleep
PM / domains: Don't skip driver's ->suspend|resume_noirq() callbacks
PM / core: Propagate wakeup_path status flag in __device_suspend_late()
PM / core: Re-structure code for clearing the direct_complete flag
powercap: add suspend and resume mechanism for SOC power limit
...
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git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound updates from Takashi Iwai:
"The major changes in the core API side in this cycle are the still
on-going ASoC componentization works. Other than that, only few small
changes such as 20bit PCM format support are found.
Meanwhile the rest majority of changes are for ASoC drivers:
- Large cleanups of some of the TI CODEC drivers
- Continued work on Intel ASoC stuff for new quirks, ACPI GPIO
handling, Kconfigs and lots of cleanups
- Refactoring of the Freescale SSI driver, as preliminary work for
the upcoming changes
- Work on ST DFSDM driver, including the required IIO patches
- New drivers for Allwinner A83T, Maxim MAX89373, SocioNext UiniPhier
EVEA Tempo Semiconductor TSCS42xx and TI PCM816x, TAS5722 and
TAS6424 devices
- Removal of dead codes for SN95031 and board drivers
Last but not least, a few HD-audio and USB-audio quirks are included
as usual, too"
* tag 'sound-4.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (303 commits)
ALSA: hda - Reduce the suspend time consumption for ALC256
ASoC: use seq_file to dump the contents of dai_list,platform_list and codec_list
ASoC: soc-core: add missing EXPORT_SYMBOL_GPL() for snd_soc_rtdcom_lookup
IIO: ADC: stm32-dfsdm: remove unused variable again
ASoC: bcm2835: fix hw_params error when device is in prepared state
ASoC: mxs-sgtl5000: Do not print error on probe deferral
ASoC: sgtl5000: Do not print error on probe deferral
ASoC: Intel: remove select on non-existing SND_SOC_INTEL_COMMON
ALSA: usb-audio: Support changing input on Sound Blaster E1
ASoC: Intel: remove second duplicated assignment to pointer 'res'
ALSA: hda/realtek - update ALC215 depop optimize
ALSA: hda/realtek - Support headset mode for ALC215/ALC285/ALC289
ALSA: pcm: Fix trailing semicolon
ASoC: add Component level .read/.write
ASoC: cx20442: fix regression by adding back .read/.write
ASoC: uda1380: fix regression by adding back .read/.write
ASoC: tlv320dac33: fix regression by adding back .read/.write
ALSA: hda - Use IS_REACHABLE() for dependency on input
IIO: ADC: stm32-dfsdm: fix static check warning
IIO: ADC: stm32-dfsdm: code optimization
...
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs
Pull init_task initializer cleanups from David Howells:
"It doesn't seem useful to have the init_task in a header file rather
than in a normal source file. We could consolidate init_task handling
instead and expand out various macros.
Here's a series of patches that consolidate init_task handling:
(1) Make THREAD_SIZE available to vmlinux.lds for cris, hexagon and
openrisc.
(2) Alter the INIT_TASK_DATA linker script macro to set
init_thread_union and init_stack rather than defining these in C.
Insert init_task and init_thread_into into the init_stack area in
the linker script as appropriate to the configuration, with
different section markers so that they end up correctly ordered.
We can then get merge ia64's init_task.c into the main one.
We then have a bunch of single-use INIT_*() macros that seem only
to be macros because they used to be used per-arch. We can then
expand these in place of the user and get rid of a few lines and
a lot of backslashes.
(3) Expand INIT_TASK() in place.
(4) Expand in place various small INIT_*() macros that are defined
conditionally. Expand them and surround them by #if[n]def/#endif
in the .c file as it takes fewer lines.
(5) Expand INIT_SIGNALS() and INIT_SIGHAND() in place.
(6) Expand INIT_STRUCT_PID in place.
These macros can then be discarded"
* tag 'init_task-20180117' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs:
Expand INIT_STRUCT_PID and remove
Expand the INIT_SIGNALS and INIT_SIGHAND macros and remove
Expand various INIT_* macros and remove
Expand INIT_TASK() in init/init_task.c and remove
Construct init thread stack in the linker script rather than by union
openrisc: Make THREAD_SIZE available to vmlinux.lds
hexagon: Make THREAD_SIZE available to vmlinux.lds
cris: Make THREAD_SIZE available to vmlinux.lds
|
|
Since i_version is mostly treated as an opaque value, we can exploit that
fact to avoid incrementing it when no one is watching. With that change,
we can avoid incrementing the counter on writes, unless someone has
queried for it since it was last incremented. If the a/c/mtime don't
change, and the i_version hasn't changed, then there's no need to dirty
the inode metadata on a write.
Convert the i_version counter to an atomic64_t, and use the lowest order
bit to hold a flag that will tell whether anyone has queried the value
since it was last incremented.
When we go to maybe increment it, we fetch the value and check the flag
bit. If it's clear then we don't need to do anything if the update
isn't being forced.
If we do need to update, then we increment the counter by 2, and clear
the flag bit, and then use a CAS op to swap it into place. If that
works, we return true. If it doesn't then do it again with the value
that we fetch from the CAS operation.
On the query side, if the flag is already set, then we just shift the
value down by 1 bit and return it. Otherwise, we set the flag in our
on-stack value and again use cmpxchg to swap it into place if it hasn't
changed. If it has, then we use the value from the cmpxchg as the new
"old" value and try again.
This method allows us to avoid incrementing the counter on writes (and
dirtying the metadata) under typical workloads. We only need to increment
if it has been queried since it was last changed.
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Acked-by: Dave Chinner <dchinner@redhat.com>
Tested-by: Krzysztof Kozlowski <krzk@kernel.org>
|
|
The rationale for taking the i_lock when incrementing this value is
lost in antiquity. The readers of the field don't take it (at least
not universally), so my assumption is that it was only done here to
serialize incrementors.
If that is indeed the case, then we can drop the i_lock from this
codepath and treat it as a atomic64_t for the purposes of
incrementing it. This allows us to use inode_inc_iversion without
any danger of lock inversion.
Note that the read side is not fetched atomically with this change.
The assumption here is that that is not a critical issue since the
i_version is not fully synchronized with anything else anyway.
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Reviewed-by: Jan Kara <jack@suse.cz>
|
|
Add a documentation blob that explains what the i_version field is, how
it is expected to work, and how it is currently implemented by various
filesystems.
We already have inode_inc_iversion. Add several other functions for
manipulating and accessing the i_version counter. For now, the
implementation is trivial and basically works the way that all of the
open-coded i_version accesses work today.
Future patches will convert existing users of i_version to use the new
API, and then convert the backend implementation to do things more
efficiently.
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Reviewed-by: Jan Kara <jack@suse.cz>
|
|
Pull NAND changes from Boris Brezillon:
"
Core changes:
* Fix NAND_CMD_NONE handling in nand_command[_lp]() hooks
* Introduce the ->exec_op() infrastructure
* Rework NAND buffers handling
* Fix ECC requirements for K9F4G08U0D
* Fix nand_do_read_oob() to return the number of bitflips
* Mark K9F1G08U0E as not supporting subpage writes
Driver changes:
* MTK: Rework the driver to support new IP versions
* OMAP OneNAND: Full rework to use new APIs (libgpio, dmaengine) and fix
DT support
* Marvell: Add a new driver to replace the pxa3xx one
"
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|
Pull spi-nor changes from Cyrille Pitchen:
"
This pull-request contains the following notable changes:
Core changes:
* Add support to new ISSI and Cypress/Spansion memory parts.
* Fix support of Micron memories by checking error bits in the FSR.
* Fix update of block-protection bits by reading back the SR.
* Restore the internal state of the SPI flash memory when removing the
device.
Driver changes:
* Maintenance for Freescale, Intel and Metiatek drivers.
* Add support of the direct access mode for the Cadence QSPI controller.
"
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|
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler fix from Thomas Gleixner:
"A single bug fix to prevent a subtle deadlock in the scheduler core
code vs cpu hotplug"
* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched/core: Fix cpu.max vs. cpuhotplug deadlock
|
|
'spi/topic/sh-msiof', 'spi/topic/sirf' and 'spi/topic/sun6i' into spi-next
|
|
|
|
In this patch, consumers are allowed to set suspend voltage, and this
actually just set the "uV" in constraint::regulator_state, when the
regulator_suspend_late() was called by PM core through callback when
the system is entering into suspend, the regulator device would act
suspend activity then.
And it assumes that if any consumer set suspend voltage, the regulator
device should be enabled in the suspend state. And if the suspend
voltage of a regulator device for all consumers was set zero, the
regulator device would be off in the suspend state.
This patch also provides a new function hook to regulator devices for
resuming from suspend states.
Signed-off-by: Chunyan Zhang <zhang.chunyan@linaro.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
|
|
Regualtor suspend/resume functions should only be called by PM suspend
core via registering dev_pm_ops, and regulator devices should implement
the callback functions. Thus, any regulator consumer shouldn't call
the regulator suspend/resume functions directly.
In order to avoid compile errors, two empty functions with the same name
still be left for the time being.
Signed-off-by: Chunyan Zhang <zhang.chunyan@linaro.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
|
|
The items "disabled" and "enabled" are a little redundant, since only one
of them would be set to record if the regulator device should keep on
or be switched to off in suspend states.
So in this patch, the "disabled" was removed, only leave the "enabled":
- enabled == 1 for regulator-on-in-suspend
- enabled == 0 for regulator-off-in-suspend
- enabled == -1 means do nothing when entering suspend mode.
Signed-off-by: Chunyan Zhang <zhang.chunyan@linaro.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Pull tracing fixes from Steven Rostedt:
"With the new ORC unwinder, ftrace stack tracing became disfunctional.
One was that ORC didn't know how to handle the ftrace callbacks in
general (which Josh fixed).
The other was that ORC would just bail if it hit a dynamically
allocated trampoline. Which means all ftrace stack tracing that
happens from the function tracer would produce no results (that
includes killing the max stack size tracer). I added a check to the
ORC unwinder to see if the trampoline belonged to ftrace, and if it
did, use the orc entry of the static trampoline that was used to
create the dynamic one (it would be identical).
Finally, I noticed that the skip values of the stack tracing were out
of whack. I went through and fixed them up"
* tag 'trace-v4.15-rc9' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
tracing: Update stack trace skipping for ORC unwinder
ftrace, orc, x86: Handle ftrace dynamically allocated trampolines
x86/ftrace: Fix ORC unwinding from ftrace handlers
|
|
This reverts commit 6cfb521ac0d5b97470883ff9b7facae264b7ab12.
Turns out distros do not want to make retpoline as part of their "ABI",
so this patch should not have been merged. Sorry Andi, this was my
fault, I suggested it when your original patch was the "correct" way of
doing this instead.
Reported-by: Jiri Kosina <jikos@kernel.org>
Fixes: 6cfb521ac0d5 ("module: Add retpoline tag to VERMAGIC")
Acked-by: Andi Kleen <ak@linux.intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: David Woodhouse <dwmw@amazon.co.uk>
Cc: rusty@rustcorp.com.au
Cc: arjan.van.de.ven@intel.com
Cc: jeyu@kernel.org
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
Tejun reported the following cpu-hotplug lock (percpu-rwsem) read recursion:
tg_set_cfs_bandwidth()
get_online_cpus()
cpus_read_lock()
cfs_bandwidth_usage_inc()
static_key_slow_inc()
cpus_read_lock()
Reported-by: Tejun Heo <tj@kernel.org>
Tested-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/20180122215328.GP3397@worktop
Signed-off-by: Ingo Molnar <mingo@kernel.org>
|
|
The function tracer can create a dynamically allocated trampoline that is
called by the function mcount or fentry hook that is used to call the
function callback that is registered. The problem is that the orc undwinder
will bail if it encounters one of these trampolines. This breaks the stack
trace of function callbacks, which include the stack tracer and setting the
stack trace for individual functions.
Since these dynamic trampolines are basically copies of the static ftrace
trampolines defined in ftrace_*.S, we do not need to create new orc entries
for the dynamic trampolines. Finding the return address on the stack will be
identical as the functions that were copied to create the dynamic
trampolines. When encountering a ftrace dynamic trampoline, we can just use
the orc entry of the ftrace static function that was copied for that
trampoline.
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
|
|
Tetsuo reported random crashes under memory pressure on 32-bit x86
system and tracked down to change that introduced
page_vma_mapped_walk().
The root cause of the issue is the faulty pointer math in check_pte().
As ->pte may point to an arbitrary page we have to check that they are
belong to the section before doing math. Otherwise it may lead to weird
results.
It wasn't noticed until now as mem_map[] is virtually contiguous on
flatmem or vmemmap sparsemem. Pointer arithmetic just works against all
'struct page' pointers. But with classic sparsemem, it doesn't because
each section memap is allocated separately and so consecutive pfns
crossing two sections might have struct pages at completely unrelated
addresses.
Let's restructure code a bit and replace pointer arithmetic with
operations on pfns.
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Reported-and-tested-by: Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>
Acked-by: Michal Hocko <mhocko@suse.com>
Fixes: ace71a19cec5 ("mm: introduce page_vma_mapped_walk()")
Cc: stable@vger.kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
GCC-4.4.4 raises errors when assigning a parameter in an anonymous
union, leading to this kind of failure:
drivers/mtd/nand/marvell_nand.c:1936:
warning: missing braces around initializer
warning: (near initialization for '(anonymous)[1].<anonymous>')
error: unknown field 'data' specified in initializer
error: unknown field 'addr' specified in initializer
Work around the situation by naming these unions.
Fixes: 8878b126df76 ("mtd: nand: add ->exec_op() implementation")
Reported-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Miquel Raynal <miquel.raynal@free-electrons.com>
Tested-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
|
|
The previous patch removed all users of these two functions. Hence
also remove the functions themselves.
Reviewed-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
|
|
This patch avoids that workloads with large block sizes (megabytes)
can trigger the following call stack with the ib_srpt driver (that
driver is the only driver that chains scatterlists allocated by
sgl_alloc_order()):
BUG: Bad page state in process kworker/0:1H pfn:2423a78
page:fffffb03d08e9e00 count:-3 mapcount:0 mapping: (null) index:0x0
flags: 0x57ffffc0000000()
raw: 0057ffffc0000000 0000000000000000 0000000000000000 fffffffdffffffff
raw: dead000000000100 dead000000000200 0000000000000000 0000000000000000
page dumped because: nonzero _count
CPU: 0 PID: 733 Comm: kworker/0:1H Tainted: G I 4.15.0-rc7.bart+ #1
Hardware name: HP ProLiant DL380 G7, BIOS P67 08/16/2015
Workqueue: ib-comp-wq ib_cq_poll_work [ib_core]
Call Trace:
dump_stack+0x5c/0x83
bad_page+0xf5/0x10f
get_page_from_freelist+0xa46/0x11b0
__alloc_pages_nodemask+0x103/0x290
sgl_alloc_order+0x101/0x180
target_alloc_sgl+0x2c/0x40 [target_core_mod]
srpt_alloc_rw_ctxs+0x173/0x2d0 [ib_srpt]
srpt_handle_new_iu+0x61e/0x7f0 [ib_srpt]
__ib_process_cq+0x55/0xa0 [ib_core]
ib_cq_poll_work+0x1b/0x60 [ib_core]
process_one_work+0x141/0x340
worker_thread+0x47/0x3e0
kthread+0xf5/0x130
ret_from_fork+0x1f/0x30
Fixes: e80a0af4759a ("lib/scatterlist: Introduce sgl_alloc() and sgl_free()")
Reported-by: Laurence Oberman <loberman@redhat.com>
Tested-by: Laurence Oberman <loberman@redhat.com>
Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Cc: Nicholas A. Bellinger <nab@linux-iscsi.org>
Cc: Laurence Oberman <loberman@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
|
|
Pull NVMe fixes for 4.16 from Christoph.
* 'nvme-4.16' of git://git.infradead.org/nvme:
nvme-pci: clean up SMBSZ bit definitions
nvme-pci: clean up CMB initialization
nvme-fc: correct hang in nvme_ns_remove()
nvme-fc: fix rogue admin cmds stalling teardown
nvmet: release a ns reference in nvmet_req_uninit if needed
nvme-fabrics: fix memory leak when parsing host ID option
nvme: fix comment typos in nvme_create_io_queues
nvme: host delete_work and reset_work on separate workqueues
nvme-pci: allocate device queues storage space at probe
nvme-pci: serialize pci resets
|
|
Without this patch, I drown in a sea of unknown attribute warnings
Link: http://lkml.kernel.org/r/20180117024539.27354-1-willy@infradead.org
Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
Acked-by: Kees Cook <keescook@chromium.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-next
ASoC: Updates for v4.16
Some final updates for the merge window, this brings in some
improvements to the ACPI GPIO handling for Intel and a bunch of fixes.
|
|
These two functions are only called from inside the block layer so
unexport them.
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
|
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'asoc/topic/max98373' and 'asoc/topic/max98926' into asoc-next
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|
|
|
Like mmc_can_gpio_cd(), mmc_can_gpio_ro() will also be useful for host
drivers to know whether GPIO write-protect detection is supported.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
|
|
* acpi-pm:
platform/x86: surfacepro3: Support for wakeup from suspend-to-idle
ACPI / PM: Use Low Power S0 Idle on more systems
ACPI / PM: Make it possible to ignore the system sleep blacklist
* pm-sleep:
PM / hibernate: Drop unused parameter of enough_swap
block, scsi: Fix race between SPI domain validation and system suspend
PM / sleep: Make lock/unlock_system_sleep() available to kernel modules
PM: hibernate: Do not subtract NR_FILE_MAPPED in minimum_image_size()
|
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* pm-core: (29 commits)
dmaengine: rcar-dmac: Make DMAC reinit during system resume explicit
PM / runtime: Allow no callbacks in pm_runtime_force_suspend|resume()
PM / runtime: Check ignore_children in pm_runtime_need_not_resume()
PM / runtime: Rework pm_runtime_force_suspend/resume()
PM / wakeup: Print warn if device gets enabled as wakeup source during sleep
PM / core: Propagate wakeup_path status flag in __device_suspend_late()
PM / core: Re-structure code for clearing the direct_complete flag
PM: i2c-designware-platdrv: Optimize power management
PM: i2c-designware-platdrv: Use DPM_FLAG_SMART_PREPARE
PM / mfd: intel-lpss: Use DPM_FLAG_SMART_SUSPEND
PCI / PM: Use SMART_SUSPEND and LEAVE_SUSPENDED flags for PCIe ports
PM / wakeup: Add device_set_wakeup_path() helper to control wakeup path
PM / core: Assign the wakeup_path status flag in __device_prepare()
PM / wakeup: Do not fail dev_pm_attach_wake_irq() unnecessarily
PM / core: Direct DPM_FLAG_LEAVE_SUSPENDED handling
PM / core: Direct DPM_FLAG_SMART_SUSPEND optimization
PM / core: Add helpers for subsystem callback selection
PM / wakeup: Drop redundant check from device_init_wakeup()
PM / wakeup: Drop redundant check from device_set_wakeup_enable()
PM / wakeup: only recommend "call"ing device_init_wakeup() once
...
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* pm-cpufreq: (36 commits)
cpufreq: scpi: remove arm_big_little dependency
drivers: psci: remove cluster terminology and dependency on physical_package_id
cpufreq: powernv: Dont assume distinct pstate values for nominal and pmin
cpufreq: intel_pstate: Add Skylake servers support
cpufreq: intel_pstate: Replace bxt_funcs with core_funcs
cpufreq: imx6q: add 696MHz operating point for i.mx6ul
ARM: dts: imx6ul: add 696MHz operating point
cpufreq: stats: Change return type of cpufreq_stats_update() as void
powernv-cpufreq: Treat pstates as opaque 8-bit values
powernv-cpufreq: Fix pstate_to_idx() to handle non-continguous pstates
powernv-cpufreq: Add helper to extract pstate from PMSR
cpu_cooling: Remove static-power related documentation
cpufreq: imx6q: switch to Use clk_bulk_get() to refine clk operations
PM / OPP: Make local function ti_opp_supply_set_opp() static
PM / OPP: Add ti-opp-supply driver
dt-bindings: opp: Introduce ti-opp-supply bindings
cpufreq: ti-cpufreq: Add support for multiple regulators
cpufreq: ti-cpufreq: Convert to module_platform_driver
cpufreq: Add DVFS support for Armada 37xx
MAINTAINERS: add new entries for Armada 37xx cpufreq driver
...
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* pm-cpufreq-thermal:
cpu_cooling: Remove static-power related documentation
cpu_cooling: Drop static-power related stuff
cpu_cooling: Keep only one of_cpufreq*cooling_register() helper
cpu_cooling: Remove unused cpufreq_power_cooling_register()
cpu_cooling: Make of_cpufreq_power_cooling_register() parse DT
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler fix from Ingo Molnar:
"A delayacct statistics correctness fix"
* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
delayacct: Account blkio completion on the correct task
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 pti bits and fixes from Thomas Gleixner:
"This last update contains:
- An objtool fix to prevent a segfault with the gold linker by
changing the invocation order. That's not just for gold, it's a
general robustness improvement.
- An improved error message for objtool which spares tearing hairs.
- Make KASAN fail loudly if there is not enough memory instead of
oopsing at some random place later
- RSB fill on context switch to prevent RSB underflow and speculation
through other units.
- Make the retpoline/RSB functionality work reliably for both Intel
and AMD
- Add retpoline to the module version magic so mismatch can be
detected
- A small (non-fix) update for cpufeatures which prevents cpu feature
clashing for the upcoming extra mitigation bits to ease
backporting"
* 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
module: Add retpoline tag to VERMAGIC
x86/cpufeature: Move processor tracing out of scattered features
objtool: Improve error message for bad file argument
objtool: Fix seg fault with gold linker
x86/retpoline: Add LFENCE to the retpoline/RSB filling RSB macros
x86/retpoline: Fill RSB on context switch for affected CPUs
x86/kasan: Panic if there is not enough memory to boot
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Define the bit positions instead of macros using the magic values,
and move the expanded helpers to calculate the size and size unit into
the implementation C file.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Keith Busch <keith.busch@intel.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Logan Gunthorpe <logang@deltatee.com>
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Expand INIT_STRUCT_PID in the single place that uses it and then remove it.
There doesn't seem any point in the macro.
Signed-off-by: David Howells <dhowells@redhat.com>
Tested-by: Tony Luck <tony.luck@intel.com>
Tested-by: Will Deacon <will.deacon@arm.com> (arm64)
Tested-by: Palmer Dabbelt <palmer@sifive.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
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There doesn't seem to be any need to have the INIT_SIGNALS and INIT_SIGHAND
macros, so expand them in their single places of use and remove them.
Signed-off-by: David Howells <dhowells@redhat.com>
Tested-by: Tony Luck <tony.luck@intel.com>
Tested-by: Will Deacon <will.deacon@arm.com> (arm64)
Tested-by: Palmer Dabbelt <palmer@sifive.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
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Expand various INIT_* macros into the single places they're used in
init/init_task.c and remove them.
Signed-off-by: David Howells <dhowells@redhat.com>
Tested-by: Tony Luck <tony.luck@intel.com>
Tested-by: Will Deacon <will.deacon@arm.com> (arm64)
Tested-by: Palmer Dabbelt <palmer@sifive.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
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It's no longer necessary to have an INIT_TASK() macro, and this can be
expanded into the one place it is now used and removed.
Signed-off-by: David Howells <dhowells@redhat.com>
Tested-by: Tony Luck <tony.luck@intel.com>
Tested-by: Will Deacon <will.deacon@arm.com> (arm64)
Tested-by: Palmer Dabbelt <palmer@sifive.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
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Add a marker for retpoline to the module VERMAGIC. This catches the case
when a non RETPOLINE compiled module gets loaded into a retpoline kernel,
making it insecure.
It doesn't handle the case when retpoline has been runtime disabled. Even
in this case the match of the retcompile status will be enforced. This
implies that even with retpoline run time disabled all modules loaded need
to be recompiled.
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: David Woodhouse <dwmw@amazon.co.uk>
Cc: rusty@rustcorp.com.au
Cc: arjan.van.de.ven@intel.com
Cc: jeyu@kernel.org
Cc: torvalds@linux-foundation.org
Link: https://lkml.kernel.org/r/20180116205228.4890-1-andi@firstfloor.org
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Pull networking fixes from David Miller:
1) Two read past end of buffer fixes in AF_KEY, from Eric Biggers.
2) Memory leak in key_notify_policy(), from Steffen Klassert.
3) Fix overflow with bpf arrays, from Daniel Borkmann.
4) Fix RDMA regression with mlx5 due to mlx5 no longer using
pci_irq_get_affinity(), from Saeed Mahameed.
5) Missing RCU read locking in nl80211_send_iface() when it calls
ieee80211_bss_get_ie(), from Dominik Brodowski.
6) cfg80211 should check dev_set_name()'s return value, from Johannes
Berg.
7) Missing module license tag in 9p protocol, from Stephen Hemminger.
8) Fix crash due to too small MTU in udp ipv6 sendmsg, from Mike
Maloney.
9) Fix endless loop in netlink extack code, from David Ahern.
10) TLS socket layer sets inverted error codes, resulting in an endless
loop. From Robert Hering.
11) Revert openvswitch erspan tunnel support, it's mis-designed and we
need to kill it before it goes into a real release. From William Tu.
12) Fix lan78xx failures in full speed USB mode, from Yuiko Oshino.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (54 commits)
net, sched: fix panic when updating miniq {b,q}stats
qed: Fix potential use-after-free in qed_spq_post()
nfp: use the correct index for link speed table
lan78xx: Fix failure in USB Full Speed
sctp: do not allow the v4 socket to bind a v4mapped v6 address
sctp: return error if the asoc has been peeled off in sctp_wait_for_sndbuf
sctp: reinit stream if stream outcnt has been change by sinit in sendmsg
ibmvnic: Fix pending MAC address changes
netlink: extack: avoid parenthesized string constant warning
ipv4: Make neigh lookup keys for loopback/point-to-point devices be INADDR_ANY
net: Allow neigh contructor functions ability to modify the primary_key
sh_eth: fix dumping ARSTR
Revert "openvswitch: Add erspan tunnel support."
net/tls: Fix inverted error codes to avoid endless loop
ipv6: ip6_make_skb() needs to clear cork.base.dst
sctp: avoid compiler warning on implicit fallthru
net: ipv4: Make "ip route get" match iif lo rules again.
netlink: extack needs to be reset each time through loop
tipc: fix a memory leak in tipc_nl_node_get_link()
ipv6: fix udpv6 sendmsg crash caused by too small MTU
...
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