Linus Torvalds
eac7078a0f
pidfd patches for v5.2-rc1 ...
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Merge tag 'pidfd-v5.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux
Pull pidfd updates from Christian Brauner:
"This patchset makes it possible to retrieve pidfds at process creation
time by introducing the new flag CLONE_PIDFD to the clone() system
call. Linus originally suggested to implement this as a new flag to
clone() instead of making it a separate system call.
After a thorough review from Oleg CLONE_PIDFD returns pidfds in the
parent_tidptr argument. This means we can give back the associated pid
and the pidfd at the same time. Access to process metadata information
thus becomes rather trivial.
As has been agreed, CLONE_PIDFD creates file descriptors based on
anonymous inodes similar to the new mount api. They are made
unconditional by this patchset as they are now needed by core kernel
code (vfs, pidfd) even more than they already were before (timerfd,
signalfd, io_uring, epoll etc.). The core patchset is rather small.
The bulky looking changelist is caused by David's very simple changes
to Kconfig to make anon inodes unconditional.
A pidfd comes with additional information in fdinfo if the kernel
supports procfs. The fdinfo file contains the pid of the process in
the callers pid namespace in the same format as the procfs status
file, i.e. "Pid:\t%d".
To remove worries about missing metadata access this patchset comes
with a sample/test program that illustrates how a combination of
CLONE_PIDFD and pidfd_send_signal() can be used to gain race-free
access to process metadata through /proc/<pid>.
Further work based on this patchset has been done by Joel. His work
makes pidfds pollable. It finished too late for this merge window. I
would prefer to have it sitting in linux-next for a while and send it
for inclusion during the 5.3 merge window"
* tag 'pidfd-v5.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux:
samples: show race-free pidfd metadata access
signal: support CLONE_PIDFD with pidfd_send_signal
clone: add CLONE_PIDFD
Make anon_inodes unconditional
2019-05-07 12:30:24 -07:00
gpio: 104-dio-48e: Mask read inputs for get_multiple
2018-11-05 08:54:41 +01:00
gpio: 104-idi-48e: Mask the read inputs for get_multiple
2018-11-05 08:54:41 +01:00
gpio: adnp: Fix testing wrong value in adnp_gpio_direction_input
2019-03-22 16:48:47 +01:00
drivers: gpio: Update MODULE AUTHOR email address
2018-08-29 13:30:25 +02:00
gpio: adp5588.c: Switch to events system
2019-02-09 11:33:37 +01:00
gpio: altera-a10sr: Trivial coding style fix
2019-02-14 15:14:38 +01:00
gpio: altera: Fixup block comment style
2019-01-28 14:59:58 +01:00
gpio: amd-fch: Set proper output level for direction_output
2019-03-08 14:11:30 +01:00
gpio: aspeed: fix a potential NULL pointer dereference
2019-03-25 09:26:48 +01:00
gpio-bcm-kona: use new req/relres and dis/enable_irq funcs
2018-09-10 08:57:36 +02:00
gpio: brcmstb: allow 0 width GPIO banks
2018-08-30 11:04:50 +02:00
gpio: Add Cadence GPIO driver
2018-12-21 11:41:00 +01:00
GPIO: add single-register GPIO via CREG driver
2018-10-10 09:21:06 +02:00
gpio: crystalcove: Convert to use SPDX identifier
2019-02-08 15:55:40 +02:00
gpio: davinci: use devm_platform_ioremap_resource()
2019-02-21 13:05:52 +01:00
gpio: gpio-dwapb: simplify getting .driver_data
2018-11-05 08:54:41 +01:00
gpio: eic: sprd: Fix incorrect irq type setting for the sync EIC
2019-04-11 15:39:48 +02:00
gpio: ep93xx: fix test for end of loop
2018-09-10 08:48:24 +02:00
gpio: exar: add a check for the return value of ida_simple_get fails
2019-03-22 16:48:39 +01:00
gpio-f7188x: add support Fintek F81804 & F81966
2019-01-22 15:48:44 +01:00
gpio: ftgpio: Register per-instance irqchip
2019-02-25 10:24:07 +01:00
gpio: gpio-mm: Mask read inputs for get_multiple
2018-11-05 08:54:41 +01:00
drivers/gpio/gpio-grgpio.c: Remove duplicate header
2018-11-19 15:09:22 +01:00
gpio: Add a Gateworks PLD GPIO driver
2019-02-09 11:33:37 +01:00
gpio: hlwd: Implement edge trigger emulation
2019-01-21 14:34:45 +01:00
gpio: htc-egpio: Remove set but not used variable 'bit'
2018-10-01 12:27:19 +02:00
gpio: ich: Convert to use SPDX identifier
2018-12-07 17:34:07 +02:00
gpio: intel-mid: Convert to use SPDX identifier
2018-12-07 17:34:07 +02:00
gpio: ks8695: Change to use DEFINE_SHOW_ATTRIBUTE macro
2018-12-07 11:10:14 +01:00
gpio: lpc18xx: fix GPIO controller driver build as a module
2018-12-10 09:10:46 +01:00
intel-gpio for v4.21-1
2018-12-14 14:27:41 +01:00
gpio: madera: Add missing const
2019-02-14 15:14:37 +01:00
gpiolib: Pass array info to get/set array functions
2018-09-13 11:16:54 +02:00
gpio: max7301: fix driver for use with CONFIG_VMAP_STACK
2018-12-21 09:23:45 +01:00
regmap: regmap-irq/gpio-max77620: add level-irq support
2018-12-19 18:35:45 +00:00
gpio: merrifield: Fix build err without CONFIG_ACPI
2019-04-23 11:30:59 +02:00
PCI: Move Rohm Vendor ID to generic list
2019-02-01 17:24:52 -06:00
gpio: Use SPDX header for core library
2018-09-25 09:08:48 +02:00
gpio: mockup: use simple_read_from_buffer() in debugfs read callback
2019-03-28 18:04:53 +01:00
gpio: msic: Convert to use SPDX identifier
2019-02-08 15:55:41 +02:00
gpio: MT7621: use a per instance irq_chip structure
2019-02-08 12:30:15 +01:00
gpio: mvebu: implement get_direction
2019-01-10 16:19:11 +01:00
gpio: mxc: add check to return defer probe if clock tree NOT ready
2019-02-25 13:42:46 +01:00
gpio: mxs: read pin level directly instead of using .get
2018-12-21 11:29:57 +01:00
gpio: gpio-omap: fix level interrupt idling
2019-03-08 14:11:30 +01:00
gpio: pca953x: Use PCA_LATCH_INT
2019-03-08 14:11:30 +01:00
gpio updates for v5.1
2019-02-17 21:59:33 +01:00
PCI: Move Rohm Vendor ID to generic list
2019-02-01 17:24:52 -06:00
gpio: pci-idio-16: Mask read inputs for get_multiple
2018-11-05 08:54:42 +01:00
gpio: pcie-idio-24: Mask read inputs for get_multiple
2018-11-05 08:54:42 +01:00
gpio: pl061: Move irq_chip definition inside struct pl061
2018-11-05 08:54:42 +01:00
gpio: sprd: Change to use SoC compatible string
2019-02-21 13:18:49 +01:00
gpio: pxa: avoid attempting to set pin direction via pinctrl on MMP2
2019-02-14 10:06:03 +01:00
gpio: raspberrypi-exp: decrease refcount on firmware dt node
2018-12-17 15:28:30 +01:00
gpio: rcar: select General Output Register to set output states
2019-01-21 14:59:50 +01:00
gpio: sama5d2-piobu: Set proper output level for direction_output
2019-01-11 10:34:37 +01:00
gpio: sch: Convert to use SPDX identifier
2018-12-07 17:34:08 +02:00
gpio: sch311x: clean an indentation issue, remove extraneous space
2018-11-05 08:54:42 +01:00
gpio: new driver to work with a 8x12 siox
2018-09-28 09:30:42 +02:00
gpio: sodaville: Convert to use SPDX identifier
2018-12-07 17:34:08 +02:00
gpio: syscon: Fix possible NULL ptr usage
2018-10-10 10:33:11 +02:00
gpio: tb10x: Use GENERIC_GPIO
2018-08-29 08:53:37 +02:00
gpio: tegra: Fix offset of pinctrl calls
2019-02-19 21:48:20 +01:00
gpio: tegra186: Use TEGRA186_ prefix for GPIO names
2019-02-14 15:14:38 +01:00
gpio: tps65xxx: Use SPDX license tag
2018-09-04 08:22:47 +02:00
gpio: tps65xxx: Use SPDX license tag
2018-09-04 08:22:47 +02:00
gpio: tps65xxx: Use SPDX license tag
2018-09-04 08:22:47 +02:00
gpio: tps65xxx: Use SPDX license tag
2018-09-04 08:22:47 +02:00
gpio: tqmx86: Set proper output level for direction_output
2019-02-21 13:19:52 +01:00
gpio: ts5500: Delete platform data handling
2018-09-04 08:22:47 +02:00
gpio: twl4030: Implement .get_direction()
2018-09-10 08:48:51 +02:00
gpio: twl6040: Implement .get_direction()
2018-09-10 08:49:22 +02:00
gpio: uniphier: convert to SPDX License Identifier
2018-12-07 13:40:28 +01:00
gpio: vf610: Mask all GPIO interrupts
2019-01-28 15:28:43 +01:00
gpio: viperboard: Cut down on boilerplate
2018-09-17 10:55:24 -07:00
gpio: vr41xx: Delete vr41xx_gpio_pullupdown() callback
2018-09-17 10:55:24 -07:00
gpio: vx855: Cut down on boilerplate
2018-09-17 10:55:24 -07:00
gpio: wcove: Convert to use SPDX identifier
2019-02-08 15:55:41 +02:00
gpio: wm8xxx: Cut down on boilerplate
2018-09-17 10:55:24 -07:00
gpio: wm8xxx: Cut down on boilerplate
2018-09-17 10:55:24 -07:00
gpio: wm8xxx: Cut down on boilerplate
2018-09-17 10:55:24 -07:00
gpio: ws16c48: Mask read inputs for get_multiple
2018-11-05 08:54:42 +01:00
gpio: xlp: Cut down on boilerplate
2018-09-17 10:55:24 -07:00
gpio: xtensa: Cut down on boilerplate
2018-09-17 10:55:24 -07:00
gpio: zevio: Include the right header
2018-09-04 08:22:47 +02:00
gpio: zynq: properly support runtime PM for GPIO used as interrupts
2019-02-13 10:36:54 +01:00
This is the bulk of GPIO changes for the v5.1 cycle:
2019-03-08 10:09:53 -08:00
Accept partial 'gpio-line-names' property.
2018-10-01 13:15:06 +02:00
gpio: Add devm_gpiod_unhinge()
2018-12-11 01:04:23 +00:00
gpio: Use SPDX header for core library
2018-09-25 09:08:48 +02:00
gpio: of: Fix of_gpiochip_add() error path
2019-03-28 17:58:34 +01:00
gpio: Use SPDX header for core library
2018-09-25 09:08:48 +02:00
gpio: Fix gpiochip_add_data_with_key() error path
2019-04-25 09:12:00 +02:00
gpio: add core support for pull-up/pull-down configuration
2019-02-13 09:10:14 +01:00
Make anon_inodes unconditional
2019-04-19 14:03:11 +02:00
gpio: AMD G-Series PCH gpio driver
2019-02-22 17:26:52 +01:00
gpio: Add global TODO file for GPIO
2018-11-05 08:54:40 +01:00
eac7078a0f