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84c2e17951
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Linus Torvalds 84c2e17951 Timers and timekeeping updates: 
Core code:
 
     - Make the NOHZ handling of the timekeeping/tick core more robust to
       prevent a rare jiffies update stall.
 
     - Handle softirqs in the NOHZ/idle case correctly
 
  Drivers:
 
     - Add support for event stream scaling of the 1GHz counter on ARM(64)
 
     - Correct an error code check in the timer-of layer
 
     - The usual cleanups and improvements all over the place
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Merge tag 'timers-core-2022-03-21' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull timer and timekeeping updates from Thomas Gleixner:
 "Core code:

   - Make the NOHZ handling of the timekeeping/tick core more robust to
     prevent a rare jiffies update stall.

   - Handle softirqs in the NOHZ/idle case correctly

  Drivers:

   - Add support for event stream scaling of the 1GHz counter on ARM(64)

   - Correct an error code check in the timer-of layer

   - The usual cleanups and improvements all over the place"

* tag 'timers-core-2022-03-21' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (23 commits)
  lib/irq_poll: Declare IRQ_POLL softirq vector as ksoftirqd-parking safe
  tick/rcu: Stop allowing RCU_SOFTIRQ in idle
  tick/rcu: Remove obsolete rcu_needs_cpu() parameters
  tick: Detect and fix jiffies update stall
  clocksource/drivers/timer-of: Check return value of of_iomap in timer_of_base_init()
  clocksource/drivers/timer-microchip-pit64b: Use 5MHz for clockevent
  clocksource/drivers/timer-microchip-pit64b: Use notrace
  clocksource/drivers/timer-microchip-pit64b: Remove mmio selection
  dt-bindings: timer: Tegra: Convert text bindings to yaml
  clocksource/drivers/imx-tpm: Move tpm_read_sched_clock() under CONFIG_ARM
  clocksource/drivers/arm_arch_timer: Use event stream scaling when available
  clocksource/drivers/exynos_mct: Increase the size of name array
  clocksource/drivers/exynos_mct: Bump up mct max irq number
  clocksource/drivers/exynos_mct: Remove mct interrupt index enum
  clocksource/drivers/exynos_mct: Handle DTS with higher number of interrupts
  clocksource/drivers/timer-ti-dm: Fix regression from errata i940 fix
  clocksource/drivers/imx-tpm: Exclude sched clock for ARM64
  clocksource: Add a Kconfig option for WATCHDOG_MAX_SKEW
  clocksource/drivers/imx-tpm: Update name of clkevt
  clocksource/drivers/imx-tpm: Add CLOCK_EVT_FEAT_DYNIRQ
  ...
2022-03-21 12:53:14 -07:00
arch Timers and timekeeping updates: 2022-03-21 12:53:14 -07:00
block block: release rq qos structures for queue without disk 2022-03-14 14:05:41 -06:00
certs KEYS: Introduce link restriction for machine keys 2022-03-08 13:55:52 +02:00
crypto KEYS: asymmetric: properly validate hash_algo and encoding 2022-03-10 01:47:13 +02:00
Documentation Timers and timekeeping updates: 2022-03-21 12:53:14 -07:00
drivers Timers and timekeeping updates: 2022-03-21 12:53:14 -07:00
fs arm64 updates for 5.18 2022-03-21 10:46:39 -07:00
include Timers and timekeeping updates: 2022-03-21 12:53:14 -07:00
init lib/stackdepot: allow optional init and stack_table allocation by kvmalloc() 2022-01-22 08:33:37 +02:00
ipc ipc/sem: do not sleep with a spin lock held 2022-02-04 09:25:05 -08:00
kernel Timers and timekeeping updates: 2022-03-21 12:53:14 -07:00
lib ARM further fixes for 5.17-rc: 2022-03-02 16:11:56 -08:00
LICENSES LICENSES/LGPL-2.1: Add LGPL-2.1-or-later as valid identifiers 2021-12-16 14:33:10 +01:00
mm Reenable ENQCMD/PASID support: 2022-03-21 12:28:13 -07:00
net net: dsa: Add missing of_node_put() in dsa_port_parse_of 2022-03-17 13:13:27 +01:00
samples samples/seccomp: Adjust sample to also provide kill option 2022-02-10 19:09:12 -08:00
scripts kconfig: fix failing to generate auto.conf 2022-02-12 23:24:19 +09:00
security integrity: Only use machine keyring when uefi_check_trust_mok_keys is true 2022-03-08 13:55:52 +02:00
sound ALSA: intel_hdmi: Fix reference to PCM buffer address 2022-03-02 09:25:37 +01:00
tools Reenable ENQCMD/PASID support: 2022-03-21 12:28:13 -07:00
usr kbuild: remove include/linux/cyclades.h from header file check 2022-01-27 08:51:08 +01:00
virt KVM: Fix lockdep false negative during host resume 2022-02-17 09:52:50 -05:00
.clang-format genirq/msi: Make interrupt allocation less convoluted 2021-12-16 22:22:20 +01:00
.cocciconfig scripts: add Linux .cocciconfig for coccinelle 2016-07-22 12:13:39 +02:00
.get_maintainer.ignore Opt out of scripts/get_maintainer.pl 2019-05-16 10:53:40 -07:00
.gitattributes .gitattributes: use 'dts' diff driver for dts files 2019-12-04 19:44:11 -08:00
.gitignore .gitignore: ignore only top-level modules.builtin 2021-05-02 00:43:35 +09:00
.mailmap MAINTAINERS: Update Jisheng's email address 2022-03-08 17:30:32 +01:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS MAINTAINERS: replace a Microchip AT91 maintainer 2022-02-09 11:30:01 +01:00
Kbuild kbuild: rename hostprogs-y/always to hostprogs/always-y 2020-02-04 01:53:07 +09:00
Kconfig kbuild: ensure full rebuild when the compiler is updated 2020-05-12 13:28:33 +09:00
MAINTAINERS - Add support for a couple new insn sets to the insn decoder: AVX512-FP16, 2022-03-21 11:19:00 -07:00
Makefile Linux 5.17 2022-03-20 13:14:17 -07:00
README Drop all 00-INDEX files from Documentation/ 2018-09-09 15:08:58 -06:00

README 

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.