linux/drivers/base
Linus Torvalds eac7078a0f pidfd patches for v5.2-rc1
-----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCgAdFiEE7btrcuORLb1XUhEwjrBW1T7ssS0FAlzReuoACgkQjrBW1T7s
 sS1uvBAA16pgnhRNxNTrp3LYft6lUWmF4n0baOTVtQNLhPjpwaOxHIrCBugkQCJB
 QcQ9IQSOvIkaEW0XAQoPBaeLviiKhHOFw1Fv89OtW6xUidSfSV15lcI9f1F2pCm2
 4yCL/8XvL6M0NhxiwftJAkWOXeDNLfjFnLwyLxBfgg3EeyqMgUB8raeosEID0ORR
 gm2/g8DYS2r+KNqM/F4xvMSgabfi2bGk+8BtAaVnftJfstpRNrqKwWnSK3Wspj1l
 5gkb8gSsiY6ns3V6RgNHrFlhevFg8V+VjcJt7FR+aUEjOkcoiXas/PhvamMzdsn/
 FM1F/A0pM8FSybIUClhnnnxNPc+p8ZN/71YQAPs+Mnh3xvbtKea2lkhC+Xv4OpK3
 edutSZWFaiIery82Rk00H3vqiSF1+kRIXSpZSS4mElk4FsVljkyH+nSP7rbmE2MR
 EQe+kKnZl8QzWrVbnODC+EVvvVpA2bXDvENJmvKqus+t2G0OdV7Iku3F5E3KjF8k
 S5RRV1zuBF3ugqnjmYrVmJtpEA8mxClmqvg6okru+qW6ngO5oOgVpPLjWn1CXcdj
 wcuQ6Pe1QwAHS54e9WSWgCHVssLvm9nCdCqypdNaoyGWmbTWntwlrY7Y0JUQnAbB
 6/G/DQQiCWY9y8bMZlTEydhIpgcsdROuPYv+oHF5+eQQthsWwHc=
 =LH11
 -----END PGP SIGNATURE-----

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
..
firmware_loader firmware: hardcode the debug message for -ENOENT 2019-02-26 11:59:43 +01:00
power Printk changes for 5.2 2019-05-07 09:18:12 -07:00
regmap Merge branch 'regmap-5.2' into regmap-next 2019-04-25 20:27:04 +01:00
test driver core: Rewrite test_async_driver_probe to cover serialization and NUMA affinity 2019-01-31 14:20:54 +01:00
arch_topology.c sched/topology, drivers/base/arch_topology: Rebuild the sched_domain hierarchy when capacities change 2018-09-10 11:05:47 +02:00
attribute_container.c driver core: Remove redundant license text 2017-12-07 18:36:44 +01:00
base.h driver core: Probe devices asynchronously instead of the driver 2019-01-31 14:20:53 +01:00
bus.c driver core: Probe devices asynchronously instead of the driver 2019-01-31 14:20:53 +01:00
cacheinfo.c cacheinfo: Keep the old value if of_property_read_u32 fails 2019-01-22 13:50:31 +01:00
class.c driver core: move device->knode_class to device_private 2019-01-18 16:55:48 +01:00
component.c drivers/component: kerneldoc polish 2019-02-19 13:20:35 +01:00
container.c driver core: Remove redundant license text 2017-12-07 18:36:44 +01:00
core.c driver core: Fix PM-runtime for links added during consumer probe 2019-02-20 11:18:07 +01:00
cpu.c Driver core patches for 5.1-rc1 2019-03-06 14:52:48 -08:00
dd.c async: Add cmdline option to specify drivers to be async probed 2019-02-14 10:51:39 +01:00
devcon.c device connection: Find device connections also from device graphs 2019-02-14 10:52:25 +01:00
devcoredump.c driver core: Remove redundant license text 2017-12-07 18:36:44 +01:00
devres.c devres: Align data[] to ARCH_KMALLOC_MINALIGN 2018-11-11 11:40:04 -08:00
devtmpfs.c vfs: Suppress MS_* flag defs within the kernel unless explicitly enabled 2018-12-20 16:32:56 +00:00
driver.c driver-core: return EINVAL error instead of BUG_ON() 2018-05-25 18:18:45 +02:00
firmware.c driver core: Remove redundant license text 2017-12-07 18:36:44 +01:00
hypervisor.c driver core: Remove redundant license text 2017-12-07 18:36:44 +01:00
init.c base: fix order of OF initialization 2018-07-07 17:54:29 +02:00
isa.c Merge 4.15-rc3 into driver-core-next 2017-12-11 08:50:05 +01:00
Kconfig Make anon_inodes unconditional 2019-04-19 14:03:11 +02:00
Makefile drivers: base: Introducing software nodes to the firmware node framework 2018-11-26 18:19:11 +01:00
map.c driver core: Remove redundant license text 2017-12-07 18:36:44 +01:00
memory.c mm/memory_hotplug: do not unlock after failing to take the device_hotplug_lock 2019-04-19 09:46:04 -07:00
module.c driver core: Remove redundant license text 2017-12-07 18:36:44 +01:00
node.c mm, proc: add KReclaimable to /proc/meminfo 2018-10-26 16:26:32 -07:00
pinctrl.c driver core: Remove redundant license text 2017-12-07 18:36:44 +01:00
platform-msi.c platform-msi: Free descriptors in platform_msi_domain_free() 2018-12-13 09:35:31 +00:00
platform.c This is the bulk of GPIO changes for the v5.1 cycle: 2019-03-08 10:09:53 -08:00
property.c device property: Add fwnode_graph_get_endpoint_by_id() 2019-04-18 16:44:05 +02:00
soc.c base: soc: use put_device() instead of kfree() 2018-03-15 14:37:03 +01:00
swnode.c drivers: base: swnode: Make two functions static 2019-03-19 16:37:56 +01:00
syscore.c treewide: Switch printk users from %pf and %pF to %ps and %pS, respectively 2019-04-09 14:19:06 +02:00
topology.c driver core: Remove redundant license text 2017-12-07 18:36:44 +01:00
transport_class.c driver core: Remove redundant license text 2017-12-07 18:36:44 +01:00