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0adb8bc039
912059 Commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
Linus Torvalds
|
0adb8bc039 |
Merge branch 'for-5.7' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq
Pull workqueue updates from Tejun Heo: "Nothing too interesting. Just two trivial patches" * 'for-5.7' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq: workqueue: Mark up unlocked access to wq->first_flusher workqueue: Make workqueue_init*() return void |
||
|
Linus Torvalds
|
d883600523 |
Merge branch 'for-5.7' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup
Pull cgroup updates from Tejun Heo: - Christian extended clone3 so that processes can be spawned into cgroups directly. This is not only neat in terms of semantics but also avoids grabbing the global cgroup_threadgroup_rwsem for migration. - Daniel added !root xattr support to cgroupfs. Userland already uses xattrs on cgroupfs for bookkeeping. This will allow delegated cgroups to support such usages. - Prateek tried to make cpuset hotplug handling synchronous but that led to possible deadlock scenarios. Reverted. - Other minor changes including release_agent_path handling cleanup. * 'for-5.7' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup: docs: cgroup-v1: Document the cpuset_v2_mode mount option Revert "cpuset: Make cpuset hotplug synchronous" cgroupfs: Support user xattrs kernfs: Add option to enable user xattrs kernfs: Add removed_size out param for simple_xattr_set kernfs: kvmalloc xattr value instead of kmalloc cgroup: Restructure release_agent_path handling selftests/cgroup: add tests for cloning into cgroups clone3: allow spawning processes into cgroups cgroup: add cgroup_may_write() helper cgroup: refactor fork helpers cgroup: add cgroup_get_from_file() helper cgroup: unify attach permission checking cpuset: Make cpuset hotplug synchronous cgroup.c: Use built-in RCU list checking kselftest/cgroup: add cgroup destruction test cgroup: Clean up css_set task traversal |
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Linus Torvalds
|
f2c3bec3c9 |
kgdb patches for 5.7-rc1
Pretty quiet this cycle. Just a couple of small fixes from myself both of which were reviewed by Doug Anderson to keep me honest (thanks). Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org> -----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEELzVBU1D3lWq6cKzwfOMlXTn3iKEFAl6G+f0ACgkQfOMlXTn3 iKENkw/7BnSCtxo3ZvcaFGmoMIuxVfaChOO5rpioKh9GpBzNhSSa4GTdQcw8revI czdVlz8aihleqJHiwGcNFhglC/HkllMwrZ5Os7hJ3kJaVF2p4rrWQp9Vu9hjB8WA z3g7SuScBqEnrjByuxr1nc1z68qibLiQt+WB4evpBbGN00rTk9r2t6sLtzfGl6cY RrYeInCnnS6N5/kGTxKijvedriMCvVu0KVy9wvRg3GctLbFDpp/yrU6OesGM8cFM CYr5e3Qn2HNloYvxLq44gGBL24GO+BNp6qr+lqcoHE/jCbq1/Yr7yqcNMjoQLZs2 ClqzXcusVeqdrxzROw2sAf6Xo2CEzboZyI/6xs9eGj+haTR2ebcvQcBG30q/i6lb 7nA6BavBcX8freDLy41JqemVZpVJIGlhI9ArSk+7lxSjbnsRC1aO97s4MwfIvggz SeKT8rPTNaSdXwOzZbbnIWrOP5P1hzZDUsSwjW3fvcYOZGVTprna7mYcsuP4CzVM GRvHW70cgMHDAG/+BcVnng9ML+vPf3TNFbGQYaqX5WoPX1JkuTVwYitT/cAR8ARL a6qusHlms8eSVDIa4mfmLpv6YUSFUxDhKJcAafd0nJ01+a941v32rJfutnSEm16W H2Qm64lihxQs5tCEZQ455q87QBjLj5zJznEadyWmWbm+VKnqqdY= =ulBe -----END PGP SIGNATURE----- Merge tag 'kgdb-5.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/danielt/linux Pull kgdb updates from Daniel Thompson: "Pretty quiet this cycle. Just a couple of small fixes from myself both of which were reviewed by Doug Anderson to keep me honest (thanks)" * tag 'kgdb-5.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/danielt/linux: kdb: Censor attempts to set PROMPT without ENABLE_MEM_READ kdb: Eliminate strncpy() warnings by replacing with strscpy() |
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Linus Torvalds
|
a943353d17 |
ARM development for 5.7:
- replace setup_irq() with request_irq() for ebsa110, footbridge, rpc - fix clang assembly error in kexec code - remove .fixup section in boot stub - decompressor / EFI cache flushing updates -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEuNNh8scc2k/wOAE+9OeQG+StrGQFAl6GMjUACgkQ9OeQG+St rGTQmxAAmExCDLhR5jPwpTRQycOfWbNCZ7U0o0/hofah/R5u0a3vsqZTsZ0vqTjZ NRasyW7h825AFiwJz7FT2celYSiZCOSox/PyRWToRAyD/k75FbcRVIYIT7Fw0IQS E1dnGgq/rcEFWJJ0DlZQ//FL6dZ3PionEbhoo6dhWd3hWkqZOwG9P+HtP965KqOU NPZSpK67y0zTn5y+oBiSGKii+Zl907LUNv7AhtmPXJNm87X+GCg7tMLUKbcU2V2a QETrLzvehLS8XSHfVTRoh1pHYGvxOHbmKQitrfUFvWnwPHdButabDPsZm1GvubM3 7uiC06s2UH6nnwSDbmZ5VmD0IGViAgocW+iCRj094mWO6DlfqD+eDmfBO+ZhCfVH rpoP9ge9GNHGGl0FhDulRLWrfnV4X+vq3keT5Duy8QrLkLvbI3IRUEjKrMT7Y+uM RLEoJL7Ym4HuuU+I9HAXsDFU3OqagJipjHKDGexaNd92JEISx0JZd6+nY5jB9JDF 5W6nxY1rbBnLKBLawUM5RRbUEoV+L31B6uVLxEbsiiQZtGON7lKzNSf1iX2f8Yjb U4PHRzUglZs5EZLpvM4uDxGhftPA+XdEbAW40Thsd3x1wn5tVtTMsb8cq8eNptNx IQqDCpazeHUYaXocH/p7fhufjwrChzSzq6TJh3BbmEEuIs3BoDA= =ySzP -----END PGP SIGNATURE----- Merge tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm Pull ARM updates from Russell King: - replace setup_irq() with request_irq() for ebsa110, footbridge, rpc - fix clang assembly error in kexec code - remove .fixup section in boot stub - decompressor / EFI cache flushing updates * tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm: ARM: 8966/1: rpc: replace setup_irq() by request_irq() ARM: 8965/2: footbridge: replace setup_irq() by request_irq() ARM: 8964/1: ebsa110: replace setup_irq() by request_irq() ARM: 8962/1: kexec: drop invalid assembly argument ARM: decompressor: switch to by-VA cache maintenance for v7 cores ARM: decompressor: prepare cache_clean_flush for doing by-VA maintenance ARM: decompressor: factor out routine to obtain the inflated image size ARM: 8959/1: Remove unused .fixup section in boot stub ARM: allow unwinder to unwind recursive functions |
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Nathan Chancellor
|
e6d05acd57 |
remoteproc/omap: Fix set_load call in omap_rproc_request_timer
When building arm allyesconfig:
drivers/remoteproc/omap_remoteproc.c:174:44: error: too many arguments
to function call, expected 2, have 3
timer->timer_ops->set_load(timer->odt, 0, 0);
~~~~~~~~~~~~~~~~~~~~~~~~~~ ^
1 error generated.
This is due to commit
|
||
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Waiman Long
|
0c05b9bdbf |
docs: cgroup-v1: Document the cpuset_v2_mode mount option
The cpuset in cgroup v1 accepts a special "cpuset_v2_mode" mount option that make cpuset.cpus and cpuset.mems behave more like those in cgroup v2. Document it to make other people more aware of this feature that can be useful in some circumstances. Signed-off-by: Waiman Long <longman@redhat.com> Signed-off-by: Tejun Heo <tj@kernel.org> |
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Tejun Heo
|
2b729fe7f3 |
Revert "cpuset: Make cpuset hotplug synchronous"
This reverts commit
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Linus Torvalds
|
bef7b2a7be |
Devicetree updates for v5.7:
- Unit test for overlays with GPIO hogs - Improve dma-ranges parsing to handle dma-ranges with multiple entries - Update dtc to upstream version v1.6.0-2-g87a656ae5ff9 - Improve overlay error reporting - Device link support for power-domains and hwlocks bindings - Add vendor prefixes for Beacon, Topwise, ENE, Dell, SG Micro, Elida, PocketBook, Xiaomi, Linutronix, OzzMaker, Waveshare Electronics, and ITE Tech - Add deprecated Marvell vendor prefix 'mrvl' - A bunch of binding conversions to DT schema continues. Of note, the common serial and USB connector bindings are converted. - Add more Arm CPU compatibles - Drop Mark Rutland as DT maintainer :( -----BEGIN PGP SIGNATURE----- iQJEBAABCgAuFiEEktVUI4SxYhzZyEuo+vtdtY28YcMFAl6GTJUQHHJvYmhAa2Vy bmVsLm9yZwAKCRD6+121jbxhw8vaD/9HDT0EEDRdfr8s5OiLHYQMSXlSExJgR+ON iLI4v19apWwyycil176RXuWL5fFxh9HHOKbxOL27mmfqSLdv/xe/ev6Z4oNLVZzm YiUalm37K+R9yWsWTqxJKtQxWqSBBtOlyJmUYnvxI1bjfF4PANKF+IMpQVDflj1w 9UMixoPRFdlOoMXVmC7yT0sfE1B6REJIh0Qfa4pqDwnHRhs8imgoIYA+JwFnmFPr k5Q8xS2YCwopH/7W5aRLzyEI2dF6Rfy9FID8jfyNoKZLtBW6cIEkA4zTv41BZSuj 4Zj2etELXAnkIWMZXXdeKSz8IoSOlgjsCR482QmzTRuoFdmVLoJgsgh9hO2+oK07 vJDEVJnXKxq1pF6DVbYwuzNgPB1pRzg6Y8EitdH3SBgjsOQ/m4RpKaqN0MkQhYrB BI9PCiF7GKCzNfNl3b/Op+HSsZ6aJkOsQPzC89/Ww0mB8azypgAwvLsjte5R3hib fS8z+V+lxAAC0/M981TsPKJ96HNv4VXbLI3bY9qJBd2LB+NDortsF/OkUuObsh+6 hVQCWnae5V5iq8WmMTFABfBAK5lHafop87edn6X33LOyZZQCT9svNz/zrpakXh0e /SBGTUudtjCOy/BLj1VQrb6tczEzos7Ij+bszeIBAcSzrWg8gtVPjw9TvuAo2b/b 9nwR4yrm0Q== =db/l -----END PGP SIGNATURE----- Merge tag 'devicetree-for-5.7' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux Pull devicetree updates from Rob Herring: - Unit test for overlays with GPIO hogs - Improve dma-ranges parsing to handle dma-ranges with multiple entries - Update dtc to upstream version v1.6.0-2-g87a656ae5ff9 - Improve overlay error reporting - Device link support for power-domains and hwlocks bindings - Add vendor prefixes for Beacon, Topwise, ENE, Dell, SG Micro, Elida, PocketBook, Xiaomi, Linutronix, OzzMaker, Waveshare Electronics, and ITE Tech - Add deprecated Marvell vendor prefix 'mrvl' - A bunch of binding conversions to DT schema continues. Of note, the common serial and USB connector bindings are converted. - Add more Arm CPU compatibles - Drop Mark Rutland as DT maintainer :( * tag 'devicetree-for-5.7' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (106 commits) MAINTAINERS: drop an old reference to stm32 pwm timers doc MAINTAINERS: dt: update etnaviv file reference dt-bindings: usb: dwc2: fix bindings for amlogic, meson-gxbb-usb dt-bindings: uniphier-system-bus: fix warning in the example dt-bindings: display: meson-vpu: fix indentation of reg-names' "items" dt-bindings: iio: Fix adi, ltc2983 uint64-matrix schema constraints dt-bindings: power: Fix example for power-domain dt-bindings: arm: Add some constraints for PSCI nodes of: some unittest overlays not untracked of: gpio unittest kfree() wrong object dt-bindings: phy: convert phy-rockchip-inno-usb2 bindings to yaml dt-bindings: serial: sh-sci: Convert to json-schema dt-bindings: serial: Document serialN aliases dt-bindings: thermal: tsens: Set 'additionalProperties: false' dt-bindings: thermal: tsens: Fix nvmem-cell-names schema dt-bindings: vendor-prefixes: Add Beacon vendor prefix dt-bindings: vendor-prefixes: Add Topwise of: of_private.h: Replace zero-length array with flexible-array member docs: dt: fix a broken reference to input.yaml docs: dt: fix references to ap806-system-controller.txt ... |
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Linus Torvalds
|
79f51b7b9c |
SCSI misc on 20200402
update changing all our txt files to rst ones. Excluding that, we have the usual driver updates (qla2xxx, ufs, lpfc, zfcp, ibmvfc, pm80xx, aacraid), a treewide update for scnprintf and some other minor updates. The major core update is Hannes moving functions out of the aacraid driver and into the core. Signed-off-by: James E.J. Bottomley <jejb@linux.ibm.com> -----BEGIN PGP SIGNATURE----- iJwEABMIAEQWIQTnYEDbdso9F2cI+arnQslM7pishQUCXoYKiyYcamFtZXMuYm90 dG9tbGV5QGhhbnNlbnBhcnRuZXJzaGlwLmNvbQAKCRDnQslM7pishSasAP4iGwSB Y8tFaZgWadu76+wj5MdqTBoXdhnIuFF0rZG3pQEAiIKdsfQlbSFdm75+gUtx5hG/ GOilX/pJczTRJDCGNis= =g7Sk -----END PGP SIGNATURE----- Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi Pull SCSI updates from James Bottomley: "This series has a huge amount of churn because it pulls in Mauro's doc update changing all our txt files to rst ones. Excluding that, we have the usual driver updates (qla2xxx, ufs, lpfc, zfcp, ibmvfc, pm80xx, aacraid), a treewide update for scnprintf and some other minor updates. The major core change is Hannes moving functions out of the aacraid driver and into the core" * tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (223 commits) scsi: aic7xxx: aic97xx: Remove FreeBSD-specific code scsi: ufs: Do not rely on prefetched data scsi: dc395x: remove dc395x_bios_param scsi: libiscsi: Fix error count for active session scsi: hpsa: correct race condition in offload enabled scsi: message: fusion: Replace zero-length array with flexible-array member scsi: qedi: Add PCI shutdown handler support scsi: qedi: Add MFW error recovery process scsi: ufs: Enable block layer runtime PM for well-known logical units scsi: ufs-qcom: Override devfreq parameters scsi: ufshcd: Let vendor override devfreq parameters scsi: ufshcd: Update the set frequency to devfreq scsi: ufs: Resume ufs host before accessing ufs device scsi: ufs-mediatek: customize the delay for enabling host scsi: ufs: make HCE polling more compact to improve initialization latency scsi: ufs: allow custom delay prior to host enabling scsi: ufs-mediatek: use common delay function scsi: ufs: introduce common and flexible delay function scsi: ufs: use an enum for host capabilities scsi: ufs: fix uninitialized tx_lanes in ufshcd_disable_tx_lcc() ... |
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Linus Torvalds
|
e109f50607 |
MTD core changes:
* Fix issue where write_cached_data() fails but write() still returns success
* maps: sa1100-flash: Replace zero-length array with flexible-array member
* phram: Fix a double free issue in error path
* Convert fallthrough comments into statements
* MAINTAINERS: Add the IRC channel to the MTD related subsystems
Raw NAND core changes:
* Add support for manufacturer specific suspend/resume operation
* Add support for manufacturer specific lock/unlock operation
* Replace zero-length array with flexible-array member
* Fix a typo ("manufecturer")
* Ensure nand_soft_waitrdy wait period is enough
Raw NAND controller driver changes:
* Brcmnand:
- Add support for flash-edu for dma transfers (+ bindings)
* Cadence:
- Reinit completion before executing a new command
- Change bad block marker size
- Fix the calculation of the avaialble OOB size
- Get meta data size from registers
* Qualcom:
- Use dma_request_chan() instead dma_request_slave_channel()
- Release resources on failure within qcom_nandc_alloc()
* Allwinner:
- Use dma_request_chan() instead dma_request_slave_channel()
* Marvell:
- Use dma_request_chan() instead dma_request_slave_channel()
- Release DMA channel on error
* Freescale:
- Use dma_request_chan() instead dma_request_slave_channel()
* Macronix:
- Add support for Macronix NAND randomizer (+ bindings)
* Ams-delta:
- Rename structures and functions to gpio_nand*
- Make the driver custom I/O ready
- Drop useless local variable
- Support custom driver initialisation
- Add module device tables
- Handle more GPIO pins as optional
- Make read pulses optional
- Don't hardcode read/write pulse widths
- Push inversion handling to gpiolib
- Enable OF partition info support
- Drop board specific partition info
- Use struct gpio_nand_platdata
- Write protect device during probe
* Ingenic:
- Use devm_platform_ioremap_resource()
- Add dependency on MIPS || COMPILE_TEST
* Denali:
- Deassert write protect pin
* ST:
- Use dma_request_chan() instead dma_request_slave_channel()
Raw NAND chip driver changes:
* Toshiba:
- Support reading the number of bitflips for BENAND (Built-in ECC NAND)
* Macronix:
- Add support for deep power down mode
- Add support for block protection
SPI-NAND core changes:
* Do not erase the block before writing a bad block marker
* Explicitly use MTD_OPS_RAW to write the bad block marker to OOB
* Stop using spinand->oobbuf for buffering bad block markers
* Rework detect procedure for different READ_ID operation
SPI-NAND driver changes:
* Toshiba:
- Support for new Kioxia Serial NAND
- Rename function name to change suffix and prefix (8Gbit)
- Add comment about Kioxia ID
* Micron:
- Add new Micron SPI NAND devices with multiple dies
- Add M70A series Micron SPI NAND devices
- identify SPI NAND device with Continuous Read mode
- Add new Micron SPI NAND devices
- Describe the SPI NAND device MT29F2G01ABAGD
- Generalize the OOB layout structure and function names
SPI NOR core changes:
* Move all the manufacturer specific quirks/code out of the core,
to make the core logic more readable and thus ease maintenance.
* Move the SFDP logic out of the core, it provides a better
separation between the SFDP parsing and core logic.
* Trim what is exposed in spi-nor.h. The SPI NOR controllers drivers
must not be able to use structures that are meant just for the
SPI NOR core.
* Use the spi-mem direct mapping API to let advanced controllers
optimize the read/write operations when they support direct mapping.
* Add generic formula for the Status Register block protection
handling. It fixes some long standing locking limitations and eases
the addition of the 4bit block protection support.
* Add block protection support for flashes with 4 block protection
bits in the Status Register.
SPI NOR controller drivers changes:
* The mtk-quadspi driver is replaced by the new spi-mem spi-mtk-nor
driver.
* Merge tag 'mtk-mtd-spi-move' into spi-nor/next to avoid conflicts.
HyperBus changes:
* Print error msg when compatible is wrong or missing
* Move mapping of direct access window from core to individual drivers
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Merge tag 'mtd/for-5.7' of git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux
Pull MTD updates from Miquel Raynal:
"MTD core changes:
- Fix issue where write_cached_data() fails but write() still returns
success
- maps: sa1100-flash: Replace zero-length array with flexible-array
member
- phram: Fix a double free issue in error path
- Convert fallthrough comments into statements
- MAINTAINERS: Add the IRC channel to the MTD related subsystems
Raw NAND core changes:
- Add support for manufacturer specific suspend/resume operation
- Add support for manufacturer specific lock/unlock operation
- Replace zero-length array with flexible-array member
- Fix a typo ("manufecturer")
- Ensure nand_soft_waitrdy wait period is enough
Raw NAND controller driver changes:
- Brcmnand:
* Add support for flash-edu for dma transfers (+ bindings)
- Cadence:
* Reinit completion before executing a new command
* Change bad block marker size
* Fix the calculation of the avaialble OOB size
* Get meta data size from registers
- Qualcom:
* Use dma_request_chan() instead dma_request_slave_channel()
* Release resources on failure within qcom_nandc_alloc()
- Allwinner:
* Use dma_request_chan() instead dma_request_slave_channel()
- Marvell:
* Use dma_request_chan() instead dma_request_slave_channel()
* Release DMA channel on error
- Freescale:
* Use dma_request_chan() instead dma_request_slave_channel()
- Macronix:
* Add support for Macronix NAND randomizer (+ bindings)
- Ams-delta:
* Rename structures and functions to gpio_nand*
* Make the driver custom I/O ready
* Drop useless local variable
* Support custom driver initialisation
* Add module device tables
* Handle more GPIO pins as optional
* Make read pulses optional
* Don't hardcode read/write pulse widths
* Push inversion handling to gpiolib
* Enable OF partition info support
* Drop board specific partition info
* Use struct gpio_nand_platdata
* Write protect device during probe
- Ingenic:
* Use devm_platform_ioremap_resource()
* Add dependency on MIPS || COMPILE_TEST
- Denali:
* Deassert write protect pin
- ST:
* Use dma_request_chan() instead dma_request_slave_channel()
Raw NAND chip driver changes:
- Toshiba:
* Support reading the number of bitflips for BENAND (Built-in ECC NAND)
- Macronix:
* Add support for deep power down mode
* Add support for block protection
SPI-NAND core changes:
- Do not erase the block before writing a bad block marker
- Explicitly use MTD_OPS_RAW to write the bad block marker to OOB
- Stop using spinand->oobbuf for buffering bad block markers
- Rework detect procedure for different READ_ID operation
SPI-NAND driver changes:
- Toshiba:
* Support for new Kioxia Serial NAND
* Rename function name to change suffix and prefix (8Gbit)
* Add comment about Kioxia ID
- Micron:
* Add new Micron SPI NAND devices with multiple dies
* Add M70A series Micron SPI NAND devices
* identify SPI NAND device with Continuous Read mode
* Add new Micron SPI NAND devices
* Describe the SPI NAND device MT29F2G01ABAGD
* Generalize the OOB layout structure and function names
SPI NOR core changes:
- Move all the manufacturer specific quirks/code out of the core, to
make the core logic more readable and thus ease maintenance.
- Move the SFDP logic out of the core, it provides a better
separation between the SFDP parsing and core logic.
- Trim what is exposed in spi-nor.h. The SPI NOR controllers drivers
must not be able to use structures that are meant just for the SPI
NOR core.
- Use the spi-mem direct mapping API to let advanced controllers
optimize the read/write operations when they support direct
mapping.
- Add generic formula for the Status Register block protection
handling. It fixes some long standing locking limitations and eases
the addition of the 4bit block protection support.
- Add block protection support for flashes with 4 block protection
bits in the Status Register.
SPI NOR controller drivers changes:
- The mtk-quadspi driver is replaced by the new spi-mem spi-mtk-nor
driver.
- Merge tag 'mtk-mtd-spi-move' into spi-nor/next to avoid conflicts.
HyperBus changes:
- Print error msg when compatible is wrong or missing
- Move mapping of direct access window from core to individual
drivers"
* tag 'mtd/for-5.7' of git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux: (103 commits)
mtd: Convert fallthrough comments into statements
mtd: rawnand: toshiba: Support reading the number of bitflips for BENAND (Built-in ECC NAND)
MAINTAINERS: Add the IRC channel to the MTD related subsystems
mtd: Fix issue where write_cached_data() fails but write() still returns success
mtd: maps: sa1100-flash: Replace zero-length array with flexible-array member
mtd: phram: fix a double free issue in error path
mtd: spinand: toshiba: Support for new Kioxia Serial NAND
mtd: spinand: toshiba: Rename function name to change suffix and prefix (8Gbit)
mtd: rawnand: macronix: Add support for deep power down mode
mtd: rawnand: Add support for manufacturer specific suspend/resume operation
mtd: spi-nor: Enable locking for n25q512ax3/n25q512a
mtd: spi-nor: Add SR 4bit block protection support
mtd: spi-nor: Add generic formula for SR block protection handling
mtd: spi-nor: Set all BP bits to one when lock_len == mtd->size
mtd: spi-nor: controllers: aspeed-smc: Replace zero-length array with flexible-array member
mtd: spi-nor: Clear WEL bit when erase or program errors occur
MAINTAINERS: update entry after SPI NOR controller move
mtd: spi-nor: Trim what is exposed in spi-nor.h
mtd: spi-nor: Drop the MFR definitions
mtd: spi-nor: Get rid of the now empty spi_nor_ids[] table
...
|
||
|
Linus Torvalds
|
e964f1e04a |
dmaengine updates for v5.7-rc1
- Core:
- Some code cleanup and optimization in core by Andy
- Debugfs support for displaying dmaengine channels by Peter
- Drivers:
- New driver for uniphier-xdmac controller
- Updates to stm32 dma, mdma and dmamux drivers and PM support
- More updates to idxd drivers
- Bunch of changes in tegra-apb driver and cleaning up of pm functions
- Bunch of spelling fixes and Replace zero-length array patches
- Shutdown hook for fsl-dpaa2-qdma driver
- Support for interleaved transfers for ti-edma and virtualization
support for k3-dma driver
- Support for reset and updates in xilinx_dma driver
- Improvements and locking updates in at_hdma driver
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Merge tag 'dmaengine-5.7-rc1' of git://git.infradead.org/users/vkoul/slave-dma
Pull dmaengine updates from Vinod Koul:
"Core:
- Some code cleanup and optimization in core by Andy
- Debugfs support for displaying dmaengine channels by Peter
Drivers:
- New driver for uniphier-xdmac controller
- Updates to stm32 dma, mdma and dmamux drivers and PM support
- More updates to idxd drivers
- Bunch of changes in tegra-apb driver and cleaning up of pm
functions
- Bunch of spelling fixes and Replace zero-length array patches
- Shutdown hook for fsl-dpaa2-qdma driver
- Support for interleaved transfers for ti-edma and virtualization
support for k3-dma driver
- Support for reset and updates in xilinx_dma driver
- Improvements and locking updates in at_hdma driver"
* tag 'dmaengine-5.7-rc1' of git://git.infradead.org/users/vkoul/slave-dma: (89 commits)
dt-bindings: dma: renesas,usb-dmac: add r8a77961 support
dmaengine: uniphier-xdmac: Remove redandant error log for platform_get_irq
dmaengine: tegra-apb: Improve DMA synchronization
dmaengine: tegra-apb: Don't save/restore IRQ flags in interrupt handler
dmaengine: tegra-apb: mark PM functions as __maybe_unused
dmaengine: fix spelling mistake "exceds" -> "exceeds"
dmaengine: sprd: Set request pending flag when DMA controller is active
dmaengine: ppc4xx: Use scnprintf() for avoiding potential buffer overflow
dmaengine: idxd: remove global token limit check
dmaengine: idxd: reflect shadow copy of traffic class programming
dmaengine: idxd: Merge definition of dsa_batch_desc into dsa_hw_desc
dmaengine: Create debug directories for DMA devices
dmaengine: ti: k3-udma: Implement custom dbg_summary_show for debugfs
dmaengine: Add basic debugfs support
dmaengine: fsl-dpaa2-qdma: remove set but not used variable 'dpaa2_qdma'
dmaengine: ti: edma: fix null dereference because of a typo in pointer name
dmaengine: fsl-dpaa2-qdma: Adding shutdown hook
dmaengine: uniphier-xdmac: Add UniPhier external DMA controller driver
dt-bindings: dmaengine: Add UniPhier external DMA controller bindings
dmaengine: ti: k3-udma: Implement support for atype (for virtualization)
...
|
||
|
Linus Torvalds
|
5c8db3eb38 |
Merge branch 'i2c/for-5.7' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
Pull i2c updates from Wolfram Sang:
"I2C has:
- using defines for bus speeds to avoid mistakes in hardcoded values;
lots of small driver updates because of that. Thanks, Andy!
- API change: i2c_setup_smbus_alert() was renamed to
i2c_new_smbus_alert_device() and returns ERRPTR now. All in-tree
users have been converted
- in the core, a rare race condition when deleting the cdev has been
fixed. Thanks, Kevin!
- lots of driver updates. Thanks, everyone!
I also want to mention: The amount of review and testing tags given
was quite high this time. Thank you to these people, too. I hope we
can keep it like this!"
* 'i2c/for-5.7' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: (34 commits)
i2c: rcar: clean up after refactoring i2c_timings
macintosh: convert to i2c_new_scanned_device
i2c: drivers: Use generic definitions for bus frequencies
i2c: algo: Use generic definitions for bus frequencies
i2c: stm32f7: switch to I²C generic property parsing
i2c: rcar: Consolidate timings calls in rcar_i2c_clock_calculate()
i2c: core: Allow override timing properties with 0
i2c: core: Provide generic definitions for bus frequencies
i2c: mxs: Use dma_request_chan() instead dma_request_slave_channel()
i2c: imx: remove duplicate print after platform_get_irq()
i2c: designware: Fix spelling typos in the comments
i2c: designware: Discard i2c_dw_read_comp_param() function
i2c: designware: Detect the FIFO size in the common code
i2c: dev: Fix the race between the release of i2c_dev and cdev
i2c: qcom-geni: Drop of_platform.h include
i2c: qcom-geni: Grow a dev pointer to simplify code
i2c: qcom-geni: Let firmware specify irq trigger flags
i2c: stm32f7: do not backup read-only PECR register
i2c: smbus: remove outdated references to irq level triggers
i2c: convert SMBus alert setup function to return an ERRPTR
...
|
||
|
Linus Torvalds
|
848960e576 |
sound updates for 5.7-rc1
This became again a busy development cycle. There are a few ALSA
core updates (merely API cleanups and sparse fixes), while majority
of other changes are found in ASoC scene.
Here are some highlights:
* ALSA core:
- More helper macros for sparse warning fixes (e.g. bitwise types)
- Slight optimization of PCM OSS locks
- Make common handling for PCM / compress buffers (for SOF)
* ASoC:
- Lots of code refactoring and modernization for (still ongoing)
componentization works
- Conversion of SND_SOC_ALL_CODECS to use imply
- Continued refactoring and fixing of the Intel SOF/SST support,
including the initial (but still incomplete) SoundWire support
- SoundWire and more advanced clocking support for Realtek RT5682
- Support for amlogic GX, Meson 8, Meson 8B and T9015 DAC, Broadcom
DSL/PON, Ingenic JZ4760 and JZ4770, Realtek RL6231, and TI TAS2563
and TLV320ADCX140
* HD-audio:
- Optimizations in HDMI jack handling
- A few new quirks and fixups for Realtek codecs
* USB-audio:
- Delayed registration support
- New quirks for Motu, Kingston, Presonus
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Merge tag 'sound-5.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound updates from Takashi Iwai:
"This became again a busy development cycle. There are few ALSA core
updates (merely API cleanups and sparse fixes), with the majority of
other changes are found in ASoC scene.
Here are some highlights:
ALSA core:
- More helper macros for sparse warning fixes (e.g. bitwise types)
- Slight optimization of PCM OSS locks
- Make common handling for PCM / compress buffers (for SOF)
ASoC:
- Lots of code refactoring and modernization for (still ongoing)
componentization works
- Conversion of SND_SOC_ALL_CODECS to use imply
- Continued refactoring and fixing of the Intel SOF/SST support,
including the initial (but still incomplete) SoundWire support
- SoundWire and more advanced clocking support for Realtek RT5682
- Support for amlogic GX, Meson 8, Meson 8B and T9015 DAC, Broadcom
DSL/PON, Ingenic JZ4760 and JZ4770, Realtek RL6231, and TI TAS2563
and TLV320ADCX140
HD-audio:
- Optimizations in HDMI jack handling
- A few new quirks and fixups for Realtek codecs
USB-audio:
- Delayed registration support
- New quirks for Motu, Kingston, Presonus"
* tag 'sound-5.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (415 commits)
ALSA: usb-audio: Fix case when USB MIDI interface has more than one extra endpoint descriptor
Revert "ALSA: uapi: Drop asound.h inclusion from asoc.h"
ALSA: hda/realtek - Remove now-unnecessary XPS 13 headphone noise fixups
ALSA: hda/realtek - Set principled PC Beep configuration for ALC256
ALSA: doc: Document PC Beep Hidden Register on Realtek ALC256
ALSA: hda/realtek - a fake key event is triggered by running shutup
ALSA: hda: default enable CA0132 DSP support
ASoC: amd: acp3x-pcm-dma: clean up two indentation issues
ASoC: tlv320adcx140: Remove undocumented property
ASoC: Intel: sof_sdw: Add Volteer support with RT5682 SNDW helper function
ASoC: Intel: common: add match table for TGL RT5682 SoundWire driver
ASoC: Intel: boards: add sof_sdw machine driver
ASoC: Intel: soc-acpi: update topology and driver name for SoundWire platforms
ASoC: rt5682: move DAI clock registry to I2S mode
ASoC: pxa: magician: convert to use i2c_new_client_device()
ASoC: SOF: Intel: hda-ctrl: add reset cycle before parsing capabilities
Asoc: SOF: Intel: hda: check SoundWire wakeen interrupt in irq thread
ASoC: SOF: Intel: hda: add WAKEEN interrupt support for SoundWire
ASoC: SOF: Intel: hda: add parameter to control SoundWire clock stop quirks
ASoC: SOF: Intel: hda: merge IPC, stream and SoundWire interrupt handlers
...
|
||
|
Linus Torvalds
|
bc3b3f4bfb |
This is the bulk of pin control changes for the v5.7 kernel cycle.
There are no core changes this time, only driver developments.
- New driver for the Dialog Semiconductor DA9062 Power Management
Integrated Circuit (PMIC).
- Renesas SH-PFC has improved consistency, with group and
register checks in the configuration checker.
- New subdriver for the Qualcomm IPQ6018.
- Add the RGMII pin control functionality to Qualcomm IPQ8064.
- Performance and code quality cleanups in the Mediatek
driver.
- Improve the Broadcom BCM2835 support to cover all the GPIOs
that exist in it.
- The Allwinner/Sunxi driver properly masks non-wakeup IRQs on
suspend.
- Add some missing groups and functions to the Ingenic driver.
- Convert some of the Freescale device tree bindings to use the
new and all improved JSON YAML markup.
- Refactorings and support for the SFIO/GPIO in the Tegra194
SoC driver.
- Support high impedance mode in the Spreadtrum/Unisoc driver.
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Merge tag 'pinctrl-v5.7-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl
Pull pin control updates from Linus Walleij:
"This is the bulk of pin control changes for the v5.7 kernel cycle.
There are no core changes this time, only driver developments:
- New driver for the Dialog Semiconductor DA9062 Power Management
Integrated Circuit (PMIC).
- Renesas SH-PFC has improved consistency, with group and register
checks in the configuration checker.
- New subdriver for the Qualcomm IPQ6018.
- Add the RGMII pin control functionality to Qualcomm IPQ8064.
- Performance and code quality cleanups in the Mediatek driver.
- Improve the Broadcom BCM2835 support to cover all the GPIOs that
exist in it.
- The Allwinner/Sunxi driver properly masks non-wakeup IRQs on
suspend.
- Add some missing groups and functions to the Ingenic driver.
- Convert some of the Freescale device tree bindings to use the new
and all improved JSON YAML markup.
- Refactorings and support for the SFIO/GPIO in the Tegra194 SoC
driver.
- Support high impedance mode in the Spreadtrum/Unisoc driver"
* tag 'pinctrl-v5.7-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (64 commits)
pinctrl: qcom: fix compilation error
pinctrl: qcom: use scm_call to route GPIO irq to Apps
pinctrl: sprd: Add pin high impedance mode support
pinctrl: sprd: Use the correct pin output configuration
pinctrl: tegra: Add SFIO/GPIO programming on Tegra194
pinctrl: tegra: Renumber the GG.0 and GG.1 pins
pinctrl: tegra: Do not add default pin range on Tegra194
pinctrl: tegra: Pass struct tegra_pmx for pin range check
pinctrl: tegra: Fix "Scmitt" -> "Schmitt" typo
pinctrl: tegra: Fix whitespace issues for improved readability
pinctrl: mediatek: Use scnprintf() for avoiding potential buffer overflow
pinctrl: freescale: drop the dependency on ARM64 for i.MX8M
Revert "pinctrl: mvebu: armada-37xx: use use platform api"
dt-bindings: pinctrl: at91: Fix a typo ("descibe")
pinctrl: meson: add tsin pinctrl for meson gxbb/gxl/gxm
pinctrl: sprd: Fix the kconfig warning
pinctrl: ingenic: add hdmi-ddc pin control group
pinctrl: sirf/atlas7: Replace zero-length array with flexible-array member
pinctrl: sprd: Allow the SPRD pinctrl driver building into a module
pinctrl: Export some needed symbols at module load time
...
|
||
|
Linus Torvalds
|
11786191e2 |
hwspinlock updates for v5.7
This marks all hwspinlock driver COMPILE_TESTable and replaces the zero-length array in hwspinlock_device with a flexible-array member. -----BEGIN PGP SIGNATURE----- iQJPBAABCAA5FiEEBd4DzF816k8JZtUlCx85Pw2ZrcUFAl6FOlAbHGJqb3JuLmFu ZGVyc3NvbkBsaW5hcm8ub3JnAAoJEAsfOT8Nma3Fn7sP/jWPYnr3IwlFnuyg44y5 J+8qAoSk2XxB8FEmfjjGb9h0LQjVEk7FKEWFG3kievMf5XIvgG5dsnQSnsFrZekf G2FhlCEeYTnRGr6DXj1CzHXqa/gdZOH+XrzQZPt1TViN5Pw/ErhBINyS296F3yXI xQKHgqwT2NMdGpZ67hAYJnEo1wSzuLXeBA2SFVVRVOeWgc0YE2yS/+WKR+ceKjYQ +KsDLTxr6xI1KsGDcGR/4+glbE9XRZEErDiSBiVlWtT/GbYrzw0vOAkESmwPlX7V lU3b0VcWhulRKOdbGqdOyiRiGEQS6S2GNTGdC8U0lfrbJeckR8WcnbRcijYDsOYD PuTvSxQPOg50r8Yg1N5HCnB3TpTRGpYuwGbeYL4S7JRAeyB0Jbe4tL4bU5jORKE9 RNhtUQ9ys4kmI6bpgEkTXH555yXAZB1PbIetgjL7PNd4NQDA52jxv3FsYXwEEt5y GdWICxsm+W7TTVZuVD+gB2wJcObd6D78dQdPsp6a5tkm8uDaj7ejmkPxh/AQVkl7 7LFDORJtkp2wvQARdZ7BmE7UZctrpA6fIqhrsgNMbnyP0KLi5gqTTKCvdMUJh+7+ 6qbRUFCKyY4LsMVfRMPlV55a/NHsmXaeuK92Y5f3pJgWNEBxqlWefW529v8RuOaz pmX+/SgRM4BmTlkN6UvTK6Z8 =m+0E -----END PGP SIGNATURE----- Merge tag 'hwlock-v5.7' of git://git.kernel.org/pub/scm/linux/kernel/git/andersson/remoteproc Pull hwspinlock updates from Bjorn Andersson: "This marks all hwspinlock driver COMPILE_TESTable and replaces the zero-length array in hwspinlock_device with a flexible-array member" * tag 'hwlock-v5.7' of git://git.kernel.org/pub/scm/linux/kernel/git/andersson/remoteproc: hwspinlock: hwspinlock_internal.h: Replace zero-length array with flexible-array member hwspinlock: Allow drivers to be built with COMPILE_TEST |
||
|
Linus Torvalds
|
c657011431 |
remoteproc updates for v5.7
This introduces a range of improvements to the OMAP remoeteproc driver; among other things adding devicetree, suspend/resume and watchdog support, and adds support the remoteprocs in the DRA7xx SoC. It introduces support for 64-bit firmware, extends the ELF loader to support this and fixes for a number of race conditions in the recovery handling. It introduces a generic mechanism to allow remoteproc drivers to sync state with remote processors during a panic, and uses this to prepare Qualcomm remote processors for post mortem analysis. Finally it introduces fixes to cleanly recover from crashes in the modem firmware on production Qualcomm devices. -----BEGIN PGP SIGNATURE----- iQJPBAABCAA5FiEEBd4DzF816k8JZtUlCx85Pw2ZrcUFAl6FObEbHGJqb3JuLmFu ZGVyc3NvbkBsaW5hcm8ub3JnAAoJEAsfOT8Nma3FerQP/A4X/ONtMSwfamWseInj TRfYj5BOo6drGKavgG9NjQti2pUDfUo6wen906uRlgE48pEwToCVBZ1ERONj/pPD nsEzXWsZqDjVut9VH5Zhc+T9k+GJVlLkocu+EnpnS9uZ59ySuH/HFY0W6BoyVpuI 2ltodDq9TGHY3nFkaAz+yQKGsqB3e0RqlqCsTHnKHxeOsaG+HLyH89QPUIQzYMAJ P+CyW+h62KnlW7I0nteX3M86nmDxD1S7lQg6NK9GMiuOyVw4FyGiO3+AnX9JBue8 fFF1Z5344WT44IA7n/pjTdKtRy1R8CkwVKBzooWwpvGJo/3d3D1VcYN1S2IoNlb4 L3j3tBSexhthekZ5nBowHdfv5cbTAlWQn8GwKXDRLw4TVrV+wVdeG3kXNbhD6Ka2 sdAv5W4Eguap5dvlJqbC/d6cvQXiZOrzWogd0aqhSB6aMiyb+Pjol+kQZtNWIW1S CmvRFhlSnAwM0NLYQpXGzuaza8LvfMphG6+nwkneSD5IFclKQ+tUxmqOtt2dLqVG 9gtiqSt7fO58I4KxtQGWvp3FBa4FVeH00hF+H0Xu2B9pEsWYr9N2Ua5CDlIJdWKV OS6sVHlYB1a+E4IpJ92GEBp/KwmRJsVCNRKkbDE3Y7UNFoNoTPhnVlsdx5Sa/stT lTQPYoIKmOF8hTZEzLM4Vc7n =5Q77 -----END PGP SIGNATURE----- Merge tag 'rproc-v5.7' of git://git.kernel.org/pub/scm/linux/kernel/git/andersson/remoteproc Pull remoteproc updates from Bjorn Andersson: - a range of improvements to the OMAP remoeteproc driver; among other things adding devicetree, suspend/resume and watchdog support, and adds support the remoteprocs in the DRA7xx SoC - support for 64-bit firmware, extends the ELF loader to support this and fixes for a number of race conditions in the recovery handling - a generic mechanism to allow remoteproc drivers to sync state with remote processors during a panic, and uses this to prepare Qualcomm remote processors for post mortem analysis - fixes to cleanly recover from crashes in the modem firmware on production Qualcomm devices * tag 'rproc-v5.7' of git://git.kernel.org/pub/scm/linux/kernel/git/andersson/remoteproc: (37 commits) remoteproc/omap: Switch to SPDX license identifiers remoteproc/omap: Add watchdog functionality for remote processors remoteproc/omap: Report device exceptions and trigger recovery remoteproc/omap: Add support for runtime auto-suspend/resume remoteproc/omap: Add support for system suspend/resume remoteproc/omap: Request a timer(s) for remoteproc usage remoteproc/omap: Check for undefined mailbox messages remoteproc/omap: Remove the platform_data header remoteproc/omap: Add support for DRA7xx remote processors remoteproc/omap: Initialize and assign reserved memory node remoteproc/omap: Add the rproc ops .da_to_va() implementation remoteproc/omap: Add support to parse internal memories from DT remoteproc/omap: Add a sanity check for DSP boot address alignment remoteproc/omap: Add device tree support dt-bindings: remoteproc: Add OMAP remoteproc bindings remoteproc: qcom: Introduce panic handler for PAS and ADSP remoteproc: qcom: q6v5: Add common panic handler remoteproc: Introduce "panic" callback in ops remoteproc: Traverse rproc_list under RCU read lock remoteproc: Fix NULL pointer dereference in rproc_virtio_notify ... |
||
|
Linus Torvalds
|
ac438771cc |
Merge branch 'for-5.7' of git://git.kernel.org/pub/scm/linux/kernel/git/dennis/percpu
Pull percpu updates from Dennis Zhou: "This is just a few documentation fixes for percpu refcount and bitmap helpers that went in v5.6, and moving my emails to all be at korg" * 'for-5.7' of git://git.kernel.org/pub/scm/linux/kernel/git/dennis/percpu: percpu: update copyright emails to dennis@kernel.org include/bitmap.h: add new functions to documentation include/bitmap.h: add missing parameter in docs percpu_ref: Fix comment regarding percpu_ref_init flags |
||
|
Linus Torvalds
|
8c1b724ddb |
ARM:
* GICv4.1 support
* 32bit host removal
PPC:
* secure (encrypted) using under the Protected Execution Framework
ultravisor
s390:
* allow disabling GISA (hardware interrupt injection) and protected
VMs/ultravisor support.
x86:
* New dirty bitmap flag that sets all bits in the bitmap when dirty
page logging is enabled; this is faster because it doesn't require bulk
modification of the page tables.
* Initial work on making nested SVM event injection more similar to VMX,
and less buggy.
* Various cleanups to MMU code (though the big ones and related
optimizations were delayed to 5.8). Instead of using cr3 in function
names which occasionally means eptp, KVM too has standardized on "pgd".
* A large refactoring of CPUID features, which now use an array that
parallels the core x86_features.
* Some removal of pointer chasing from kvm_x86_ops, which will also be
switched to static calls as soon as they are available.
* New Tigerlake CPUID features.
* More bugfixes, optimizations and cleanups.
Generic:
* selftests: cleanups, new MMU notifier stress test, steal-time test
* CSV output for kvm_stat.
KVM/MIPS has been broken since 5.5, it does not compile due to a patch committed
by MIPS maintainers. I had already prepared a fix, but the MIPS maintainers
prefer to fix it in generic code rather than KVM so they are taking care of it.
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull kvm updates from Paolo Bonzini:
"ARM:
- GICv4.1 support
- 32bit host removal
PPC:
- secure (encrypted) using under the Protected Execution Framework
ultravisor
s390:
- allow disabling GISA (hardware interrupt injection) and protected
VMs/ultravisor support.
x86:
- New dirty bitmap flag that sets all bits in the bitmap when dirty
page logging is enabled; this is faster because it doesn't require
bulk modification of the page tables.
- Initial work on making nested SVM event injection more similar to
VMX, and less buggy.
- Various cleanups to MMU code (though the big ones and related
optimizations were delayed to 5.8). Instead of using cr3 in
function names which occasionally means eptp, KVM too has
standardized on "pgd".
- A large refactoring of CPUID features, which now use an array that
parallels the core x86_features.
- Some removal of pointer chasing from kvm_x86_ops, which will also
be switched to static calls as soon as they are available.
- New Tigerlake CPUID features.
- More bugfixes, optimizations and cleanups.
Generic:
- selftests: cleanups, new MMU notifier stress test, steal-time test
- CSV output for kvm_stat"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (277 commits)
x86/kvm: fix a missing-prototypes "vmread_error"
KVM: x86: Fix BUILD_BUG() in __cpuid_entry_get_reg() w/ CONFIG_UBSAN=y
KVM: VMX: Add a trampoline to fix VMREAD error handling
KVM: SVM: Annotate svm_x86_ops as __initdata
KVM: VMX: Annotate vmx_x86_ops as __initdata
KVM: x86: Drop __exit from kvm_x86_ops' hardware_unsetup()
KVM: x86: Copy kvm_x86_ops by value to eliminate layer of indirection
KVM: x86: Set kvm_x86_ops only after ->hardware_setup() completes
KVM: VMX: Configure runtime hooks using vmx_x86_ops
KVM: VMX: Move hardware_setup() definition below vmx_x86_ops
KVM: x86: Move init-only kvm_x86_ops to separate struct
KVM: Pass kvm_init()'s opaque param to additional arch funcs
s390/gmap: return proper error code on ksm unsharing
KVM: selftests: Fix cosmetic copy-paste error in vm_mem_region_move()
KVM: Fix out of range accesses to memslots
KVM: X86: Micro-optimize IPI fastpath delay
KVM: X86: Delay read msr data iff writes ICR MSR
KVM: PPC: Book3S HV: Add a capability for enabling secure guests
KVM: arm64: GICv4.1: Expose HW-based SGIs in debugfs
KVM: arm64: GICv4.1: Allow non-trapping WFI when using HW SGIs
...
|
||
|
Linus Torvalds
|
f14a9532ee |
A single fix addressing Sparse warnings. <asm/bitops.h> is changed non-trivially
to avoid the warnings, but generated code is not supposed to be affected. Signed-off-by: Ingo Molnar <mingo@kernel.org> -----BEGIN PGP SIGNATURE----- iQJFBAABCgAvFiEEBpT5eoXrXCwVQwEKEnMQ0APhK1gFAl6Fs/QRHG1pbmdvQGtl cm5lbC5vcmcACgkQEnMQ0APhK1iOLQ//R3i1QAIvDasdG9EMbSkJAZP2cliK8r3B Vc+3quYv8wjJcgj5LGPrlVeoV2X96jopZiN3YeWWJg0rA30ZyZMPiVkQWtYVUEtU VjGvX5RNw0ShcWjzbetcPXhyczCpJKFwFVv2fEVPwAvI3OyqGuL044aFQhgksra+ RE4n8eYWB9pastFeJGn1WPWdJOw40fOcC7YbAF3USo7e8aO/Wv3KJiZxahhGFnPt 5spBnZHSPbvZp9O8pgdYVJ09mExK2wBxk/GClQw/E4i7d/TLcHEzBIOAekS98H0F 9lNgCnFLVmEK5DA4TXMPhz+aYfEb5VFoBgz4wA4VOiwcPrTJKa0IukcG+oWXWPrB PRb8StNB3IHU0pqKPHRemyPNzl9d4DMm22NMfRBCVUrPrDlYkOb1tCANgcyHOyMf G/w2nbcNDgzi9m2L38gWCFIY5AP1AKW+0X8MdsvyESlTXIC6lsBFsjsLE69nbv7c dBYYxwEKb41bjXpWIxbdCEyW9kNZTSt5RZP+Md/2DGoeWLHba4iHmmXjhJKGF1F3 pf1yJZDVoaQkwX+mLgDyC9681UzDA0lRMrSBIhQOpw2OuCkvBRTifwvH0efbLjtN cXxeCZvK8O1Zmc/BTtdRRPWybItjtZmkfm2iVviFUxY566i/vAQdmQBST4Uqq4qv 2V9nnZVEJas= =Vx32 -----END PGP SIGNATURE----- Merge tag 'x86-urgent-2020-04-02' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 fix from Ingo Molnar: "A single fix addressing Sparse warnings. <asm/bitops.h> is changed non-trivially to avoid the warnings, but generated code is not supposed to be affected" * tag 'x86-urgent-2020-04-02' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86: Fix bitops.h warning with a moved cast |
||
|
Linus Torvalds
|
7f218319ca |
Merge branch 'next-integrity' of git://git.kernel.org/pub/scm/linux/kernel/git/zohar/linux-integrity
Pull integrity updates from Mimi Zohar:
"Just a couple of updates for linux-5.7:
- A new Kconfig option to enable IMA architecture specific runtime
policy rules needed for secure and/or trusted boot, as requested.
- Some message cleanup (eg. pr_fmt, additional error messages)"
* 'next-integrity' of git://git.kernel.org/pub/scm/linux/kernel/git/zohar/linux-integrity:
ima: add a new CONFIG for loading arch-specific policies
integrity: Remove duplicate pr_fmt definitions
IMA: Add log statements for failure conditions
IMA: Update KBUILD_MODNAME for IMA files to ima
|
||
|
Linus Torvalds
|
6cad420cc6 |
Merge branch 'akpm' (patches from Andrew)
Merge updates from Andrew Morton:
"A large amount of MM, plenty more to come.
Subsystems affected by this patch series:
- tools
- kthread
- kbuild
- scripts
- ocfs2
- vfs
- mm: slub, kmemleak, pagecache, gup, swap, memcg, pagemap, mremap,
sparsemem, kasan, pagealloc, vmscan, compaction, mempolicy,
hugetlbfs, hugetlb"
* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (155 commits)
include/linux/huge_mm.h: check PageTail in hpage_nr_pages even when !THP
mm/hugetlb: fix build failure with HUGETLB_PAGE but not HUGEBTLBFS
selftests/vm: fix map_hugetlb length used for testing read and write
mm/hugetlb: remove unnecessary memory fetch in PageHeadHuge()
mm/hugetlb.c: clean code by removing unnecessary initialization
hugetlb_cgroup: add hugetlb_cgroup reservation docs
hugetlb_cgroup: add hugetlb_cgroup reservation tests
hugetlb: support file_region coalescing again
hugetlb_cgroup: support noreserve mappings
hugetlb_cgroup: add accounting for shared mappings
hugetlb: disable region_add file_region coalescing
hugetlb_cgroup: add reservation accounting for private mappings
mm/hugetlb_cgroup: fix hugetlb_cgroup migration
hugetlb_cgroup: add interface for charge/uncharge hugetlb reservations
hugetlb_cgroup: add hugetlb_cgroup reservation counter
hugetlbfs: Use i_mmap_rwsem to address page fault/truncate race
hugetlbfs: use i_mmap_rwsem for more pmd sharing synchronization
mm/memblock.c: remove redundant assignment to variable max_addr
mm: mempolicy: require at least one nodeid for MPOL_PREFERRED
mm: mempolicy: use VM_BUG_ON_VMA in queue_pages_test_walk()
...
|
||
|
Linus Torvalds
|
7be97138e7 |
New code for 5.7:
- Fix a hard to trigger race between iclog error checking and log shutdown.
- Strengthen the AGF verifier.
- Ratelimit some of the more spammy error messages.
- Remove the icdinode uid/gid members and just use the ones in the vfs inode.
- Hold ILOCK across insert/collapse range.
- Clean up the extended attribute interfaces.
- Clean up the attr flags mess.
- Restore PF_MEMALLOC after exiting xfsaild thread to avoid triggering
warnings in the process accounting code.
- Remove the flexibly-sized array from struct xfs_agfl to eliminate
compiler warnings about unaligned pointers and packed structures.
- Various macro and typedef removals.
- Stale metadata buffers if we decide they're corrupt outside of a
verifier.
- Check directory data/block/free block owners.
- Fix a UAF when aborting inactivation of a corrupt xattr fork.
- Teach online scrub to report failed directory and attr name lookups
as a metadata corruption instead of a runtime error.
- Avoid potential buffer overflows in sysfs files by using scnprintf.
- Fix a regression in getdents lookups due to a mistake in pointer
arithmetic.
- Refactor btree cursor private data structures to use anonymous
unions.
- Cleanups in the log unmounting code.
- Fix a potential mishandling of ENOMEM errors on multi-block directory
buffer lookups.
- Fix an incorrect test in the block allocation code.
- Cleanups and name prefix shortening in the scrub code.
- Introduce btree bulk loading code for online repair and scrub.
- Fix a quotaoff log item leak (and hang) when the fs goes down midway
through a quotaoff operation.
- Remove di_version from the incore inode.
- Refactor some of the log shutdown checking code.
- Record the forcing of the log unmount records in the log force
counters.
- Fix a longstanding bug where quotacheck would purge the
administrator's default quota grace interval and warning limits.
- Reduce memory usage when scrubbing directory and xattr trees.
- Don't let fsfreeze race with GETFSMAP or online scrub.
- Handle bio_add_page failures more gracefully in xlog_write_iclog.
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Merge tag 'xfs-5.7-merge-8' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
Pull xfs updates from Darrick Wong:
"There's a lot going on this cycle with cleanups in the log code, the
btree code, and the xattr code.
We're tightening of metadata validation and online fsck checking, and
introducing a common btree rebuilding library so that we can refactor
xfs_repair and introduce online repair in a future cycle.
We also fixed a few visible bugs -- most notably there's one in
getdents that we introduced in 5.6; and a fix for hangs when disabling
quotas.
This series has been running fstests & other QA in the background for
over a week and looks good so far.
I anticipate sending a second pull request next week. That batch will
change how xfs interacts with memory reclaim; how the log batches and
throttles log items; how hard writes near ENOSPC will try to squeeze
more space out of the filesystem; and hopefully fix the last of the
umount hangs after a catastrophic failure. That should ease a lot of
problems when running at the limits, but for now I'm leaving that in
for-next for another week to make sure we got all the subtleties
right.
Summary:
- Fix a hard to trigger race between iclog error checking and log
shutdown.
- Strengthen the AGF verifier.
- Ratelimit some of the more spammy error messages.
- Remove the icdinode uid/gid members and just use the ones in the
vfs inode.
- Hold ILOCK across insert/collapse range.
- Clean up the extended attribute interfaces.
- Clean up the attr flags mess.
- Restore PF_MEMALLOC after exiting xfsaild thread to avoid
triggering warnings in the process accounting code.
- Remove the flexibly-sized array from struct xfs_agfl to eliminate
compiler warnings about unaligned pointers and packed structures.
- Various macro and typedef removals.
- Stale metadata buffers if we decide they're corrupt outside of a
verifier.
- Check directory data/block/free block owners.
- Fix a UAF when aborting inactivation of a corrupt xattr fork.
- Teach online scrub to report failed directory and attr name lookups
as a metadata corruption instead of a runtime error.
- Avoid potential buffer overflows in sysfs files by using scnprintf.
- Fix a regression in getdents lookups due to a mistake in pointer
arithmetic.
- Refactor btree cursor private data structures to use anonymous
unions.
- Cleanups in the log unmounting code.
- Fix a potential mishandling of ENOMEM errors on multi-block
directory buffer lookups.
- Fix an incorrect test in the block allocation code.
- Cleanups and name prefix shortening in the scrub code.
- Introduce btree bulk loading code for online repair and scrub.
- Fix a quotaoff log item leak (and hang) when the fs goes down
midway through a quotaoff operation.
- Remove di_version from the incore inode.
- Refactor some of the log shutdown checking code.
- Record the forcing of the log unmount records in the log force
counters.
- Fix a longstanding bug where quotacheck would purge the
administrator's default quota grace interval and warning limits.
- Reduce memory usage when scrubbing directory and xattr trees.
- Don't let fsfreeze race with GETFSMAP or online scrub.
- Handle bio_add_page failures more gracefully in xlog_write_iclog"
* tag 'xfs-5.7-merge-8' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux: (108 commits)
xfs: prohibit fs freezing when using empty transactions
xfs: shutdown on failure to add page to log bio
xfs: directory bestfree check should release buffers
xfs: drop all altpath buffers at the end of the sibling check
xfs: preserve default grace interval during quotacheck
xfs: remove xlog_state_want_sync
xfs: move the ioerror check out of xlog_state_clean_iclog
xfs: refactor xlog_state_clean_iclog
xfs: remove the aborted parameter to xlog_state_done_syncing
xfs: simplify log shutdown checking in xfs_log_release_iclog
xfs: simplify the xfs_log_release_iclog calling convention
xfs: factor out a xlog_wait_on_iclog helper
xfs: merge xlog_cil_push into xlog_cil_push_work
xfs: remove the di_version field from struct icdinode
xfs: simplify a check in xfs_ioctl_setattr_check_cowextsize
xfs: simplify di_flags2 inheritance in xfs_ialloc
xfs: only check the superblock version for dinode size calculation
xfs: add a new xfs_sb_version_has_v3inode helper
xfs: fix unmount hang and memory leak on shutdown during quotaoff
xfs: factor out quotaoff intent AIL removal and memory free
...
|
||
|
Linus Torvalds
|
7db83c070b |
New code for 5.7:
- Fix a regression where we broke the userspace hibernation driver by
disallowing writes to the swap device.
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Merge tag 'vfs-5.7-merge-1' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
Pull hibernation fix from Darrick Wong:
"Fix a regression where we broke the userspace hibernation driver by
disallowing writes to the swap device"
* tag 'vfs-5.7-merge-1' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
hibernate: Allow uswsusp to write to swap
|
||
|
Linus Torvalds
|
35a9fafe23 |
New iomap code for 5.7:
- Fix a broken tracepoint - Fix a broken comment -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEUzaAxoMeQq6m2jMV+H93GTRKtOsFAl5yOLYACgkQ+H93GTRK tOueKA/+O83EV/a8oI5/EEM95uoe5JRC4VUaCj3iDyMVEefQC8Phl3pUraQoG/z3 d511bTvca70rBSYj9HaSoa3Wt3MTJTPy9RIxBIKaaumzTXMe4erfXZ/JRJIf5DSl JZs+Ujng5ythLR6ederr/Kn7LXg5MGax5I4j41JHCDiRp5xFaqRN+4Rib18jj4Lf WNlbwblixWzCeEeHhs+CNm9G7cy+wt84Qv0CTJjC/nThtDc2tOVFkI3EODX0oZH5 R+KEbEStHebI9AZ0NIfDagoHQ926ROjAEpJn4VS/tOYbN1favrSE5RTnaNZ0asln c6XnGIPvpHcjsFztNFEuPXS9rP6aGNLic+P+V5TADjzY3M0TCXnIsYXFhEV23HNe 2hprg6T7+KvcAaTdq3t5k2jjYC9AEiaxBLIJRGyTwYKmJPobvTXU9QTyJpA3KX3u mCAo8jJzl3XHcMrCcXA3xBVS8e23cAkQN5gwpvMIfOeGRr006iFAJS5MZ23Rqyk8 k3w0V4vVWW3QnLYwJI+cGKanuhFrZ7PNulnqC4AmUdYpeyhmWoH2e1mYgU3JKNm9 vF4zad/MYhp0xfEUopsLEE+F0sj4v1yUKEvPSoXxGYSycf9/KFa3/MQvF3akaOeX kQu29pzDeErFsdLzm+qQmt/xFHuSA5WP6ShO+0XC9uzhN/ezRNg= =2wnO -----END PGP SIGNATURE----- Merge tag 'iomap-5.7-merge-2' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux Pull iomap updates from Darrick Wong: "We're fixing tracepoints and comments in this cycle, so there shouldn't be any surprises here. I anticipate sending a second pull request next week with a single bug fix for readahead, but it's still undergoing QA. Summary: - Fix a broken tracepoint - Fix a broken comment" * tag 'iomap-5.7-merge-2' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux: iomap: fix comments in iomap_dio_rw iomap: Remove pgoff from tracepoints |
||
|
Linus Torvalds
|
9c577491b9 |
Merge branch 'work.dotdot1' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull vfs pathwalk sanitizing from Al Viro:
"Massive pathwalk rewrite and cleanups.
Several iterations have been posted; hopefully this thing is getting
readable and understandable now. Pretty much all parts of pathname
resolutions are affected...
The branch is identical to what has sat in -next, except for commit
message in "lift all calls of step_into() out of follow_dotdot/
follow_dotdot_rcu", crediting Qian Cai for reporting the bug; only
commit message changed there."
* 'work.dotdot1' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (69 commits)
lookup_open(): don't bother with fallbacks to lookup+create
atomic_open(): no need to pass struct open_flags anymore
open_last_lookups(): move complete_walk() into do_open()
open_last_lookups(): lift O_EXCL|O_CREAT handling into do_open()
open_last_lookups(): don't abuse complete_walk() when all we want is unlazy
open_last_lookups(): consolidate fsnotify_create() calls
take post-lookup part of do_last() out of loop
link_path_walk(): sample parent's i_uid and i_mode for the last component
__nd_alloc_stack(): make it return bool
reserve_stack(): switch to __nd_alloc_stack()
pick_link(): take reserving space on stack into a new helper
pick_link(): more straightforward handling of allocation failures
fold path_to_nameidata() into its only remaining caller
pick_link(): pass it struct path already with normal refcounting rules
fs/namei.c: kill follow_mount()
non-RCU analogue of the previous commit
helper for mount rootwards traversal
follow_dotdot(): be lazy about changing nd->path
follow_dotdot_rcu(): be lazy about changing nd->path
follow_dotdot{,_rcu}(): massage loops
...
|
||
|
Qian Cai
|
514ccc1949 |
x86/kvm: fix a missing-prototypes "vmread_error"
The commit
|
||
|
Russell King
|
0b521e9e31 | Merge branches 'misc' and 'devel-stable' into for-linus | ||
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Linus Torvalds
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d987ca1c6b |
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
Pull exec/proc updates from Eric Biederman: "This contains two significant pieces of work: the work to sort out proc_flush_task, and the work to solve a deadlock between strace and exec. Fixing proc_flush_task so that it no longer requires a persistent mount makes improvements to proc possible. The removal of the persistent mount solves an old regression that that caused the hidepid mount option to only work on remount not on mount. The regression was found and reported by the Android folks. This further allows Alexey Gladkov's work making proc mount options specific to an individual mount of proc to move forward. The work on exec starts solving a long standing issue with exec that it takes mutexes of blocking userspace applications, which makes exec extremely deadlock prone. For the moment this adds a second mutex with a narrower scope that handles all of the easy cases. Which makes the tricky cases easy to spot. With a little luck the code to solve those deadlocks will be ready by next merge window" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace: (25 commits) signal: Extend exec_id to 64bits pidfd: Use new infrastructure to fix deadlocks in execve perf: Use new infrastructure to fix deadlocks in execve proc: io_accounting: Use new infrastructure to fix deadlocks in execve proc: Use new infrastructure to fix deadlocks in execve kernel/kcmp.c: Use new infrastructure to fix deadlocks in execve kernel: doc: remove outdated comment cred.c mm: docs: Fix a comment in process_vm_rw_core selftests/ptrace: add test cases for dead-locks exec: Fix a deadlock in strace exec: Add exec_update_mutex to replace cred_guard_mutex exec: Move exec_mmap right after de_thread in flush_old_exec exec: Move cleanup of posix timers on exec out of de_thread exec: Factor unshare_sighand out of de_thread and call it separately exec: Only compute current once in flush_old_exec pid: Improve the comment about waiting in zap_pid_ns_processes proc: Remove the now unnecessary internal mount of proc uml: Create a private mount of proc for mconsole uml: Don't consult current to find the proc_mnt in mconsole_proc proc: Use a list of inodes to flush from proc ... |
||
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Matthew Wilcox (Oracle)
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77d6b90948 |
include/linux/huge_mm.h: check PageTail in hpage_nr_pages even when !THP
It's even more important to check that we don't have a tail page when calling hpage_nr_pages() when THP are disabled. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Christoph Hellwig <hch@lst.de> Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Cc: Pankaj Gupta <pankaj.gupta.linux@gmail.com> Link: http://lkml.kernel.org/r/20200318140253.6141-4-willy@infradead.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
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Christophe Leroy
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bb297bb2de |
mm/hugetlb: fix build failure with HUGETLB_PAGE but not HUGEBTLBFS
When CONFIG_HUGETLB_PAGE is set but not CONFIG_HUGETLBFS, the following
build failure is encoutered:
In file included from arch/powerpc/mm/fault.c:33:0:
include/linux/hugetlb.h: In function 'hstate_inode':
include/linux/hugetlb.h:477:9: error: implicit declaration of function 'HUGETLBFS_SB' [-Werror=implicit-function-declaration]
return HUGETLBFS_SB(i->i_sb)->hstate;
^
include/linux/hugetlb.h:477:30: error: invalid type argument of '->' (have 'int')
return HUGETLBFS_SB(i->i_sb)->hstate;
^
Gate hstate_inode() with CONFIG_HUGETLBFS instead of CONFIG_HUGETLB_PAGE.
Fixes:
|
||
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Christophe Leroy
|
cabc30da10 |
selftests/vm: fix map_hugetlb length used for testing read and write
Commit |
||
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Vlastimil Babka
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d4af73e3f8 |
mm/hugetlb: remove unnecessary memory fetch in PageHeadHuge()
Commit
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||
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Mateusz Nosek
|
353b2de42e |
mm/hugetlb.c: clean code by removing unnecessary initialization
Previously variable 'check_addr' was initialized, but was not read later before reassigning. So the initialization can be removed. Signed-off-by: Mateusz Nosek <mateusznosek0@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com> Link: http://lkml.kernel.org/r/20200303212354.25226-1-mateusznosek0@gmail.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
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Mina Almasry
|
6566704daf |
hugetlb_cgroup: add hugetlb_cgroup reservation docs
Add docs for how to use hugetlb_cgroup reservations, and their behavior. Signed-off-by: Mina Almasry <almasrymina@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Cc: David Rientjes <rientjes@google.com> Cc: Greg Thelen <gthelen@google.com> Cc: Mike Kravetz <mike.kravetz@oracle.com> Cc: Sandipan Das <sandipan@linux.ibm.com> Cc: Shakeel Butt <shakeelb@google.com> Cc: Shuah Khan <shuah@kernel.org> Link: http://lkml.kernel.org/r/20200211213128.73302-9-almasrymina@google.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
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Mina Almasry
|
29750f71a9 |
hugetlb_cgroup: add hugetlb_cgroup reservation tests
The tests use both shared and private mapped hugetlb memory, and monitors the hugetlb usage counter as well as the hugetlb reservation counter. They test different configurations such as hugetlb memory usage via hugetlbfs, or MAP_HUGETLB, or shmget/shmat, and with and without MAP_POPULATE. Also add test for hugetlb reservation reparenting, since this is a subtle issue. Signed-off-by: Mina Almasry <almasrymina@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Tested-by: Sandipan Das <sandipan@linux.ibm.com> [powerpc64] Acked-by: Mike Kravetz <mike.kravetz@oracle.com> Cc: Sandipan Das <sandipan@linux.ibm.com> Cc: David Rientjes <rientjes@google.com> Cc: Greg Thelen <gthelen@google.com> Cc: Shakeel Butt <shakeelb@google.com> Cc: Shuah Khan <shuah@kernel.org> Link: http://lkml.kernel.org/r/20200211213128.73302-8-almasrymina@google.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
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Mina Almasry
|
a9b3f86740 |
hugetlb: support file_region coalescing again
An earlier patch in this series disabled file_region coalescing in order to hang the hugetlb_cgroup uncharge info on the file_region entries. This patch re-adds support for coalescing of file_region entries. Essentially everytime we add an entry, we call a recursive function that tries to coalesce the added region with the regions next to it. The worst case call depth for this function is 3: one to coalesce with the region next to it, one to coalesce to the region prev, and one to reach the base case. This is an important performance optimization as private mappings add their entries page by page, and we could incur big performance costs for large mappings with lots of file_region entries in their resv_map. [almasrymina@google.com: fix CONFIG_CGROUP_HUGETLB ifdefs] Link: http://lkml.kernel.org/r/20200214204544.231482-1-almasrymina@google.com [almasrymina@google.com: remove check_coalesce_bug debug code] Link: http://lkml.kernel.org/r/20200219233610.13808-1-almasrymina@google.com Signed-off-by: Mina Almasry <almasrymina@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com> Acked-by: David Rientjes <rientjes@google.com> Cc: Greg Thelen <gthelen@google.com> Cc: Mike Kravetz <mike.kravetz@oracle.com> Cc: Sandipan Das <sandipan@linux.ibm.com> Cc: Shakeel Butt <shakeelb@google.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Randy Dunlap <rdunlap@infradead.org> Link: http://lkml.kernel.org/r/20200211213128.73302-7-almasrymina@google.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
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Mina Almasry
|
08cf9faf75 |
hugetlb_cgroup: support noreserve mappings
Support MAP_NORESERVE accounting as part of the new counter. For each hugepage allocation, at allocation time we check if there is a reservation for this allocation or not. If there is a reservation for this allocation, then this allocation was charged at reservation time, and we don't re-account it. If there is no reserevation for this allocation, we charge the appropriate hugetlb_cgroup. The hugetlb_cgroup to uncharge for this allocation is stored in page[3].private. We use new APIs added in an earlier patch to set this pointer. Signed-off-by: Mina Almasry <almasrymina@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com> Cc: David Rientjes <rientjes@google.com> Cc: Greg Thelen <gthelen@google.com> Cc: Sandipan Das <sandipan@linux.ibm.com> Cc: Shakeel Butt <shakeelb@google.com> Cc: Shuah Khan <shuah@kernel.org> Link: http://lkml.kernel.org/r/20200211213128.73302-6-almasrymina@google.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
|
Mina Almasry
|
075a61d07a |
hugetlb_cgroup: add accounting for shared mappings
For shared mappings, the pointer to the hugetlb_cgroup to uncharge lives in the resv_map entries, in file_region->reservation_counter. After a call to region_chg, we charge the approprate hugetlb_cgroup, and if successful, we pass on the hugetlb_cgroup info to a follow up region_add call. When a file_region entry is added to the resv_map via region_add, we put the pointer to that cgroup in file_region->reservation_counter. If charging doesn't succeed, we report the error to the caller, so that the kernel fails the reservation. On region_del, which is when the hugetlb memory is unreserved, we also uncharge the file_region->reservation_counter. [akpm@linux-foundation.org: forward declare struct file_region] Signed-off-by: Mina Almasry <almasrymina@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com> Cc: David Rientjes <rientjes@google.com> Cc: Greg Thelen <gthelen@google.com> Cc: Mike Kravetz <mike.kravetz@oracle.com> Cc: Sandipan Das <sandipan@linux.ibm.com> Cc: Shakeel Butt <shakeelb@google.com> Cc: Shuah Khan <shuah@kernel.org> Link: http://lkml.kernel.org/r/20200211213128.73302-5-almasrymina@google.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
|
Mina Almasry
|
0db9d74ed8 |
hugetlb: disable region_add file_region coalescing
A follow up patch in this series adds hugetlb cgroup uncharge info the file_region entries in resv->regions. The cgroup uncharge info may differ for different regions, so they can no longer be coalesced at region_add time. So, disable region coalescing in region_add in this patch. Behavior change: Say a resv_map exists like this [0->1], [2->3], and [5->6]. Then a region_chg/add call comes in region_chg/add(f=0, t=5). Old code would generate resv->regions: [0->5], [5->6]. New code would generate resv->regions: [0->1], [1->2], [2->3], [3->5], [5->6]. Special care needs to be taken to handle the resv->adds_in_progress variable correctly. In the past, only 1 region would be added for every region_chg and region_add call. But now, each call may add multiple regions, so we can no longer increment adds_in_progress by 1 in region_chg, or decrement adds_in_progress by 1 after region_add or region_abort. Instead, region_chg calls add_reservation_in_range() to count the number of regions needed and allocates those, and that info is passed to region_add and region_abort to decrement adds_in_progress correctly. We've also modified the assumption that region_add after region_chg never fails. region_chg now pre-allocates at least 1 region for region_add. If region_add needs more regions than region_chg has allocated for it, then it may fail. [almasrymina@google.com: fix file_region entry allocations] Link: http://lkml.kernel.org/r/20200219012736.20363-1-almasrymina@google.com Signed-off-by: Mina Almasry <almasrymina@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com> Acked-by: David Rientjes <rientjes@google.com> Cc: Sandipan Das <sandipan@linux.ibm.com> Cc: Shakeel Butt <shakeelb@google.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Greg Thelen <gthelen@google.com> Cc: Miguel Ojeda <miguel.ojeda.sandonis@gmail.com> Link: http://lkml.kernel.org/r/20200211213128.73302-4-almasrymina@google.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
|
Mina Almasry
|
e9fe92ae0c |
hugetlb_cgroup: add reservation accounting for private mappings
Normally the pointer to the cgroup to uncharge hangs off the struct page, and gets queried when it's time to free the page. With hugetlb_cgroup reservations, this is not possible. Because it's possible for a page to be reserved by one task and actually faulted in by another task. The best place to put the hugetlb_cgroup pointer to uncharge for reservations is in the resv_map. But, because the resv_map has different semantics for private and shared mappings, the code patch to charge/uncharge shared and private mappings is different. This patch implements charging and uncharging for private mappings. For private mappings, the counter to uncharge is in resv_map->reservation_counter. On initializing the resv_map this is set to NULL. On reservation of a region in private mapping, the tasks hugetlb_cgroup is charged and the hugetlb_cgroup is placed is resv_map->reservation_counter. On hugetlb_vm_op_close, we uncharge resv_map->reservation_counter. [akpm@linux-foundation.org: forward declare struct resv_map] Signed-off-by: Mina Almasry <almasrymina@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com> Acked-by: David Rientjes <rientjes@google.com> Cc: Greg Thelen <gthelen@google.com> Cc: Sandipan Das <sandipan@linux.ibm.com> Cc: Shakeel Butt <shakeelb@google.com> Cc: Shuah Khan <shuah@kernel.org> Link: http://lkml.kernel.org/r/20200211213128.73302-3-almasrymina@google.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
|
Mina Almasry
|
9808895e1a |
mm/hugetlb_cgroup: fix hugetlb_cgroup migration
Commit c32300516047 ("hugetlb_cgroup: add interface for charge/uncharge
hugetlb reservations") mistakingly doesn't handle the migration of *both*
the reservation hugetlb_cgroup and the fault hugetlb_cgroup correctly.
What should happen is that both cgroups shuold be queried from the old
page, then both set to NULL on the old page, then both inserted into the
new page.
The mistake also creates the following warning:
mm/hugetlb_cgroup.c: In function 'hugetlb_cgroup_migrate':
mm/hugetlb_cgroup.c:777:25: warning: variable 'h_cg' set but not used
[-Wunused-but-set-variable]
struct hugetlb_cgroup *h_cg;
^~~~
Solution is to add the missing steps, namly setting the reservation
hugetlb_cgroup to NULL on the old page, and setting the fault
hugetlb_cgroup on the new page.
Fixes: c32300516047 ("hugetlb_cgroup: add interface for charge/uncharge hugetlb reservations")
Reported-by: Qian Cai <cai@lca.pw>
Signed-off-by: Mina Almasry <almasrymina@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: David Rientjes <rientjes@google.com>
Cc: Greg Thelen <gthelen@google.com>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Sandipan Das <sandipan@linux.ibm.com>
Cc: Shakeel Butt <shakeelb@google.com>
Cc: Shuah Khan <shuah@kernel.org>
Link: http://lkml.kernel.org/r/20200218194727.46995-1-almasrymina@google.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
||
|
Mina Almasry
|
1adc4d419a |
hugetlb_cgroup: add interface for charge/uncharge hugetlb reservations
Augments hugetlb_cgroup_charge_cgroup to be able to charge hugetlb usage or hugetlb reservation counter. Adds a new interface to uncharge a hugetlb_cgroup counter via hugetlb_cgroup_uncharge_counter. Integrates the counter with hugetlb_cgroup, via hugetlb_cgroup_init, hugetlb_cgroup_have_usage, and hugetlb_cgroup_css_offline. Signed-off-by: Mina Almasry <almasrymina@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Mike Kravetz <mike.kravetz@oracle.com> Acked-by: David Rientjes <rientjes@google.com> Cc: Greg Thelen <gthelen@google.com> Cc: Sandipan Das <sandipan@linux.ibm.com> Cc: Shakeel Butt <shakeelb@google.com> Cc: Shuah Khan <shuah@kernel.org> Link: http://lkml.kernel.org/r/20200211213128.73302-2-almasrymina@google.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
|
Mina Almasry
|
cdc2fcfea7 |
hugetlb_cgroup: add hugetlb_cgroup reservation counter
These counters will track hugetlb reservations rather than hugetlb memory faulted in. This patch only adds the counter, following patches add the charging and uncharging of the counter. This is patch 1 of an 9 patch series. Problem: Currently tasks attempting to reserve more hugetlb memory than is available get a failure at mmap/shmget time. This is thanks to Hugetlbfs Reservations [1]. However, if a task attempts to reserve more hugetlb memory than its hugetlb_cgroup limit allows, the kernel will allow the mmap/shmget call, but will SIGBUS the task when it attempts to fault in the excess memory. We have users hitting their hugetlb_cgroup limits and thus we've been looking at this failure mode. We'd like to improve this behavior such that users violating the hugetlb_cgroup limits get an error on mmap/shmget time, rather than getting SIGBUS'd when they try to fault the excess memory in. This gives the user an opportunity to fallback more gracefully to non-hugetlbfs memory for example. The underlying problem is that today's hugetlb_cgroup accounting happens at hugetlb memory *fault* time, rather than at *reservation* time. Thus, enforcing the hugetlb_cgroup limit only happens at fault time, and the offending task gets SIGBUS'd. Proposed Solution: A new page counter named 'hugetlb.xMB.rsvd.[limit|usage|max_usage]_in_bytes'. This counter has slightly different semantics than 'hugetlb.xMB.[limit|usage|max_usage]_in_bytes': - While usage_in_bytes tracks all *faulted* hugetlb memory, rsvd.usage_in_bytes tracks all *reserved* hugetlb memory and hugetlb memory faulted in without a prior reservation. - If a task attempts to reserve more memory than limit_in_bytes allows, the kernel will allow it to do so. But if a task attempts to reserve more memory than rsvd.limit_in_bytes, the kernel will fail this reservation. This proposal is implemented in this patch series, with tests to verify functionality and show the usage. Alternatives considered: 1. A new cgroup, instead of only a new page_counter attached to the existing hugetlb_cgroup. Adding a new cgroup seemed like a lot of code duplication with hugetlb_cgroup. Keeping hugetlb related page counters under hugetlb_cgroup seemed cleaner as well. 2. Instead of adding a new counter, we considered adding a sysctl that modifies the behavior of hugetlb.xMB.[limit|usage]_in_bytes, to do accounting at reservation time rather than fault time. Adding a new page_counter seems better as userspace could, if it wants, choose to enforce different cgroups differently: one via limit_in_bytes, and another via rsvd.limit_in_bytes. This could be very useful if you're transitioning how hugetlb memory is partitioned on your system one cgroup at a time, for example. Also, someone may find usage for both limit_in_bytes and rsvd.limit_in_bytes concurrently, and this approach gives them the option to do so. Testing: - Added tests passing. - Used libhugetlbfs for regression testing. [1]: https://www.kernel.org/doc/html/latest/vm/hugetlbfs_reserv.html Signed-off-by: Mina Almasry <almasrymina@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com> Acked-by: David Rientjes <rientjes@google.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Shakeel Butt <shakeelb@google.com> Cc: Greg Thelen <gthelen@google.com> Cc: Sandipan Das <sandipan@linux.ibm.com> Link: http://lkml.kernel.org/r/20200211213128.73302-1-almasrymina@google.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
|
Mike Kravetz
|
87bf91d39b |
hugetlbfs: Use i_mmap_rwsem to address page fault/truncate race
hugetlbfs page faults can race with truncate and hole punch operations. Current code in the page fault path attempts to handle this by 'backing out' operations if we encounter the race. One obvious omission in the current code is removing a page newly added to the page cache. This is pretty straight forward to address, but there is a more subtle and difficult issue of backing out hugetlb reservations. To handle this correctly, the 'reservation state' before page allocation needs to be noted so that it can be properly backed out. There are four distinct possibilities for reservation state: shared/reserved, shared/no-resv, private/reserved and private/no-resv. Backing out a reservation may require memory allocation which could fail so that needs to be taken into account as well. Instead of writing the required complicated code for this rare occurrence, just eliminate the race. i_mmap_rwsem is now held in read mode for the duration of page fault processing. Hold i_mmap_rwsem in write mode when modifying i_size. In this way, truncation can not proceed when page faults are being processed. In addition, i_size will not change during fault processing so a single check can be made to ensure faults are not beyond (proposed) end of file. Faults can still race with hole punch, but that race is handled by existing code and the use of hugetlb_fault_mutex. With this modification, checks for races with truncation in the page fault path can be simplified and removed. remove_inode_hugepages no longer needs to take hugetlb_fault_mutex in the case of truncation. Comments are expanded to explain reasoning behind locking. Signed-off-by: Mike Kravetz <mike.kravetz@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: "Aneesh Kumar K . V" <aneesh.kumar@linux.vnet.ibm.com> Cc: Davidlohr Bueso <dave@stgolabs.net> Cc: Hugh Dickins <hughd@google.com> Cc: "Kirill A . Shutemov" <kirill.shutemov@linux.intel.com> Cc: Michal Hocko <mhocko@kernel.org> Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> Cc: Prakash Sangappa <prakash.sangappa@oracle.com> Link: http://lkml.kernel.org/r/20200316205756.146666-3-mike.kravetz@oracle.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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|
Mike Kravetz
|
c0d0381ade |
hugetlbfs: use i_mmap_rwsem for more pmd sharing synchronization
Patch series "hugetlbfs: use i_mmap_rwsem for more synchronization", v2. While discussing the issue with huge_pte_offset [1], I remembered that there were more outstanding hugetlb races. These issues are: 1) For shared pmds, huge PTE pointers returned by huge_pte_alloc can become invalid via a call to huge_pmd_unshare by another thread. 2) hugetlbfs page faults can race with truncation causing invalid global reserve counts and state. A previous attempt was made to use i_mmap_rwsem in this manner as described at [2]. However, those patches were reverted starting with [3] due to locking issues. To effectively use i_mmap_rwsem to address the above issues it needs to be held (in read mode) during page fault processing. However, during fault processing we need to lock the page we will be adding. Lock ordering requires we take page lock before i_mmap_rwsem. Waiting until after taking the page lock is too late in the fault process for the synchronization we want to do. To address this lock ordering issue, the following patches change the lock ordering for hugetlb pages. This is not too invasive as hugetlbfs processing is done separate from core mm in many places. However, I don't really like this idea. Much ugliness is contained in the new routine hugetlb_page_mapping_lock_write() of patch 1. The only other way I can think of to address these issues is by catching all the races. After catching a race, cleanup, backout, retry ... etc, as needed. This can get really ugly, especially for huge page reservations. At one time, I started writing some of the reservation backout code for page faults and it got so ugly and complicated I went down the path of adding synchronization to avoid the races. Any other suggestions would be welcome. [1] https://lore.kernel.org/linux-mm/1582342427-230392-1-git-send-email-longpeng2@huawei.com/ [2] https://lore.kernel.org/linux-mm/20181222223013.22193-1-mike.kravetz@oracle.com/ [3] https://lore.kernel.org/linux-mm/20190103235452.29335-1-mike.kravetz@oracle.com [4] https://lore.kernel.org/linux-mm/1584028670.7365.182.camel@lca.pw/ [5] https://lore.kernel.org/lkml/20200312183142.108df9ac@canb.auug.org.au/ This patch (of 2): While looking at BUGs associated with invalid huge page map counts, it was discovered and observed that a huge pte pointer could become 'invalid' and point to another task's page table. Consider the following: A task takes a page fault on a shared hugetlbfs file and calls huge_pte_alloc to get a ptep. Suppose the returned ptep points to a shared pmd. Now, another task truncates the hugetlbfs file. As part of truncation, it unmaps everyone who has the file mapped. If the range being truncated is covered by a shared pmd, huge_pmd_unshare will be called. For all but the last user of the shared pmd, huge_pmd_unshare will clear the pud pointing to the pmd. If the task in the middle of the page fault is not the last user, the ptep returned by huge_pte_alloc now points to another task's page table or worse. This leads to bad things such as incorrect page map/reference counts or invalid memory references. To fix, expand the use of i_mmap_rwsem as follows: - i_mmap_rwsem is held in read mode whenever huge_pmd_share is called. huge_pmd_share is only called via huge_pte_alloc, so callers of huge_pte_alloc take i_mmap_rwsem before calling. In addition, callers of huge_pte_alloc continue to hold the semaphore until finished with the ptep. - i_mmap_rwsem is held in write mode whenever huge_pmd_unshare is called. One problem with this scheme is that it requires taking i_mmap_rwsem before taking the page lock during page faults. This is not the order specified in the rest of mm code. Handling of hugetlbfs pages is mostly isolated today. Therefore, we use this alternative locking order for PageHuge() pages. mapping->i_mmap_rwsem hugetlb_fault_mutex (hugetlbfs specific page fault mutex) page->flags PG_locked (lock_page) To help with lock ordering issues, hugetlb_page_mapping_lock_write() is introduced to write lock the i_mmap_rwsem associated with a page. In most cases it is easy to get address_space via vma->vm_file->f_mapping. However, in the case of migration or memory errors for anon pages we do not have an associated vma. A new routine _get_hugetlb_page_mapping() will use anon_vma to get address_space in these cases. Signed-off-by: Mike Kravetz <mike.kravetz@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Cc: Michal Hocko <mhocko@kernel.org> Cc: Hugh Dickins <hughd@google.com> Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> Cc: "Aneesh Kumar K . V" <aneesh.kumar@linux.vnet.ibm.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: "Kirill A . Shutemov" <kirill.shutemov@linux.intel.com> Cc: Davidlohr Bueso <dave@stgolabs.net> Cc: Prakash Sangappa <prakash.sangappa@oracle.com> Link: http://lkml.kernel.org/r/20200316205756.146666-2-mike.kravetz@oracle.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Colin Ian King
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49aef7175c |
mm/memblock.c: remove redundant assignment to variable max_addr
The variable max_addr is being initialized with a value that is never read and it is being updated later with a new value. The initialization is redundant and can be removed. Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Pankaj Gupta <pankaj.gupta.linux@gmail.com> Reviewed-by: Mike Rapoport <rppt@linux.ibm.com> Link: http://lkml.kernel.org/r/20200228235003.112718-1-colin.king@canonical.com Addresses-Coverity: ("Unused value") Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Randy Dunlap
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aa9f7d5172 |
mm: mempolicy: require at least one nodeid for MPOL_PREFERRED
Using an empty (malformed) nodelist that is not caught during mount option
parsing leads to a stack-out-of-bounds access.
The option string that was used was: "mpol=prefer:,". However,
MPOL_PREFERRED requires a single node number, which is not being provided
here.
Add a check that 'nodes' is not empty after parsing for MPOL_PREFERRED's
nodeid.
Fixes:
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Yang Shi
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d888fb2b18 |
mm: mempolicy: use VM_BUG_ON_VMA in queue_pages_test_walk()
The VM_BUG_ON() is already used by queue_pages_test_walk(), it sounds better to dump more debug information by using VM_BUG_ON_VMA() to help debugging. Signed-off-by: Yang Shi <yang.shi@linux.alibaba.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Andrew Morton <akpm@linux-foundation.org> Cc: "Li Xinhai" <lixinhai.lxh@gmail.com> Cc: Qian Cai <cai@lca.pw> Link: http://lkml.kernel.org/r/1579068565-110432-1-git-send-email-yang.shi@linux.alibaba.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Li Xinhai
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20ca87f22b |
mm/mempolicy: check hugepage migration is supported by arch in vma_migratable()
vma_migratable() is called to check if pages in vma can be migrated before go ahead to further actions. Currently it is used in below code path: - task_numa_work - mbind - move_pages For hugetlb mapping, whether vma is migratable or not is determined by: - CONFIG_ARCH_ENABLE_HUGEPAGE_MIGRATION - arch_hugetlb_migration_supported Issue: current code only checks for CONFIG_ARCH_ENABLE_HUGEPAGE_MIGRATION alone, and no code should use it directly. (note that current code in vma_migratable don't cause failure or bug because unmap_and_move_huge_page() will catch unsupported hugepage and handle it properly) This patch checks the two factors by hugepage_migration_supported for impoving code logic and robustness. It will enable early bail out of hugepage migration procedure, but because currently all architecture supporting hugepage migration is able to support all page size, we would not see performance gain with this patch applied. vma_migratable() is moved to mm/mempolicy.c, because of the circular reference of mempolicy.h and hugetlb.h cause defining it as inline not feasible. Signed-off-by: Li Xinhai <lixinhai.lxh@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com> Acked-by: Michal Hocko <mhocko@suse.com> Cc: Anshuman Khandual <anshuman.khandual@arm.com> Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> Link: http://lkml.kernel.org/r/1579786179-30633-1-git-send-email-lixinhai.lxh@gmail.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Li Xinhai
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dcf1763546 |
mm/mempolicy: support MPOL_MF_STRICT for huge page mapping
MPOL_MF_STRICT is used in mbind() for purposes:
(1) MPOL_MF_STRICT is set alone without MPOL_MF_MOVE or
MPOL_MF_MOVE_ALL, to check if there is misplaced page and return -EIO;
(2) MPOL_MF_STRICT is set with MPOL_MF_MOVE or MPOL_MF_MOVE_ALL, to
check if there is misplaced page which is failed to isolate, or page
is success on isolate but failed to move, and return -EIO.
For non hugepage mapping, (1) and (2) are implemented as expectation. For
hugepage mapping, (1) is not implemented. And in (2), the part about
failed to isolate and report -EIO is not implemented.
This patch implements the missed parts for hugepage mapping. Benefits
with it applied:
- User space can apply same code logic to handle mbind() on hugepage and
non hugepage mapping;
- Reliably using MPOL_MF_STRICT alone to check whether there is
misplaced page or not when bind policy on address range, especially for
address range which contains both hugepage and non hugepage mapping.
Analysis of potential impact to existing users:
- If MPOL_MF_STRICT alone was previously used, hugetlb pages not
following the memory policy would not cause an EIO error. After this
change, hugetlb pages are treated like all other pages. If
MPOL_MF_STRICT alone is used and hugetlb pages do not follow memory
policy an EIO error will be returned.
- For users who using MPOL_MF_STRICT with MPOL_MF_MOVE or
MPOL_MF_MOVE_ALL, the semantic about some pages could not be moved will
not be changed by this patch, because failed to isolate and failed to
move have same effects to users, so their existing code will not be
impacted.
In mbind man page, the note about 'MPOL_MF_STRICT is ignored on huge page
mappings' can be removed after this patch is applied.
Mike:
: The current behavior with MPOL_MF_STRICT and hugetlb pages is inconsistent
: and does not match documentation (as described above). The special
: behavior for hugetlb pages ideally should have been removed when hugetlb
: page migration was introduced. It is unlikely that anyone relies on
: today's inconsistent behavior, and removing one more case of special
: handling for hugetlb pages is a good thing.
Signed-off-by: Li Xinhai <lixinhai.lxh@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com>
Reviewed-by: Naoya Horiguchi <naoya.horiguchi@nec.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: linux-man <linux-man@vger.kernel.org>
Link: http://lkml.kernel.org/r/1581559627-6206-1-git-send-email-lixinhai.lxh@gmail.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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