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Aastha Grover a2dccf1283 kernel: events: fix walking the waitq race condition
Fixes race condition for k_event_post_internal() in an
SMP environment while walking the waitq. Uses z_sched_waitq_walk()
to safely walk the waitq by using a sched_spinlock.
It should be noted that since walking the wait queue is an
operation of indeterminant length, there exists the possibility
that the sched_spinlock (which is a highly used and contended-for
lock) may be locked for an indeterminant amount of time. However,
it is expected that few threads will be waiting on any given kernel
event object, which should ameliorate this risk.

Fixes #54317

Signed-off-by: Aastha Grover <aastha.grover@intel.com>
2023-03-09 09:22:21 +01:00
.github ci: bluetooth-tests: Also trigger on BT samples changes 2023-03-06 21:20:38 +01:00
arch arch/arm64/mmu: fix table discarding code 2023-03-07 08:33:05 +01:00
boards boards: nucleo_f031k6: update CONFIG_ISR_STACK_SIZE 2023-03-09 09:21:28 +01:00
cmake cmake: modules: west: allow custom MIN_WEST_VERSION 2023-03-08 14:16:53 -08:00
doc doc: set MIN_WEST_VERSION to 1.0.0 2023-03-08 14:16:53 -08:00
drivers drivers: i2c: sam0: add support for I2C_MSG_RESTART 2023-03-09 09:22:02 +01:00
dts dts: arm: st: f0: add stm32f042 dtsi 2023-03-07 15:49:30 +01:00
include/zephyr kernel/sched: Use kernel timeouts for timeslice expirations 2023-03-09 09:21:12 +01:00
kernel kernel: events: fix walking the waitq race condition 2023-03-09 09:22:21 +01:00
lib posix: fnmatch: correct (many) compliance issues 2023-03-03 17:40:14 +09:00
misc misc: generated: update configs.c template with <zephyr/...> prefix 2022-05-09 12:45:29 -04:00
modules modules: tf-m: Fix thread preemption toggling 2023-03-08 15:26:08 +01:00
samples net/lib: mqtt_sn: Fix MQTT-SN IPv6 Support and assertation in Example 2023-03-09 09:20:53 +01:00
scripts twister: add support for levels and test configuration 2023-03-07 15:49:16 +01:00
share sysbuild: provide a Kconfig setting name for boot signature choice 2023-03-06 16:45:33 +01:00
soc soc: stm32u5: Add simple POWER_SUPPLY_CHOICE configuration 2023-03-07 15:49:57 +01:00
submanifests west.yml: allow users to easily add more modules 2021-10-07 13:45:42 +02:00
subsys subsys/pm: Use correct timeout API 2023-03-09 09:21:12 +01:00
tests tests: net: http_service: verify service and resource macros 2023-03-08 13:57:13 +00:00
.checkpatch.conf checkpatch: Remove ext/ from excludes 2022-11-30 12:06:55 -05:00
.clang-format clang-format: Add CHECKIF to IfMacros 2023-02-27 10:47:11 -08:00
.codecov.yml yamllint: fix all yamllint comments errors 2023-01-04 01:16:45 +09:00
.editorconfig editorconfig: Improve verbosity 2022-04-28 08:55:39 -04:00
.gitattributes gitattributes: consider SVG files generated 2021-10-14 12:42:44 -04:00
.gitignore gitignore: Ignore new bsim tests build folders 2023-03-07 08:33:38 +01:00
.gitlint gitlint: Stop ignoring merge, revert, fixup and squash commits 2022-01-10 08:13:36 -05:00
.mailmap mailmap: update mailmap file with some stray emails 2021-06-17 14:15:41 -04:00
.yamllint scripts: compliance: add support for YAMLLint 2023-01-04 17:29:23 +01:00
CMakeLists.txt toolchain: oneApi: Fix support and update for 2023.0.0 release 2023-02-23 14:30:03 -05:00
CODE_OF_CONDUCT.md
CODEOWNERS CODEOWNERS: Add self to sysbuild 2023-03-08 08:53:46 -06:00
CONTRIBUTING.rst doc: Fixed a link in CONTRIBUTING.rst 2019-02-28 12:46:04 -08:00
Kconfig kconfig: Clean up header comments and make them consistent 2019-11-04 17:31:27 -05:00
Kconfig.zephyr kconfig: add esp32s3 into configuration 2023-02-27 19:41:33 +01:00
LICENSE
MAINTAINERS.yml MAINTAINERS: Add sysbuild entry 2023-03-08 08:53:46 -06:00
README.rst readme: Add support for light/dark modes in the logo 2022-11-18 08:58:59 +01:00
VERSION VERSION: Bump to 3.3.99 2023-02-19 20:34:26 +09:00
version.h.in cmake: version.h generation performed at build time 2022-02-08 07:50:24 -05:00
west.yml manifest: hal_nordic: bump version of hal_nordic to e9eca1e. 2023-03-08 11:07:22 +01:00
zephyr-env.cmd scripts: remove west from scripts/ 2019-01-29 10:15:01 +01:00
zephyr-env.sh everywhere: fix typos 2022-03-18 13:24:08 -04:00

.. raw:: html

   <a href="https://www.zephyrproject.org">
     <p align="center">
       <picture>
         <source media="(prefers-color-scheme: dark)" srcset="doc/_static/images/logo-readme-dark.svg">
         <source media="(prefers-color-scheme: light)" srcset="doc/_static/images/logo-readme-light.svg">
         <img src="doc/_static/images/logo-readme-light.svg">
       </picture>
     </p>
   </a>

   <a href="https://bestpractices.coreinfrastructure.org/projects/74"><img
   src="https://bestpractices.coreinfrastructure.org/projects/74/badge"></a>
   <a
   href="https://github.com/zephyrproject-rtos/zephyr/actions/workflows/twister.yaml?query=branch%3Amain">
   <img
   src="https://github.com/zephyrproject-rtos/zephyr/actions/workflows/twister.yaml/badge.svg?event=push"></a>


The Zephyr Project is a scalable real-time operating system (RTOS) supporting
multiple hardware architectures, optimized for resource constrained devices,
and built with security in mind.

The Zephyr OS is based on a small-footprint kernel designed for use on
resource-constrained systems: from simple embedded environmental sensors and
LED wearables to sophisticated smart watches and IoT wireless gateways.

The Zephyr kernel supports multiple architectures, including ARM (Cortex-A,
Cortex-R, Cortex-M), Intel x86, ARC, Nios II, Tensilica Xtensa, and RISC-V,
SPARC, MIPS, and a large number of `supported boards`_.

.. below included in doc/introduction/introduction.rst


Getting Started
***************

Welcome to Zephyr! See the `Introduction to Zephyr`_ for a high-level overview,
and the documentation's `Getting Started Guide`_ to start developing.

.. start_include_here

Community Support
*****************

Community support is provided via mailing lists and Discord; see the Resources
below for details.

.. _project-resources:

Resources
*********

Here's a quick summary of resources to help you find your way around:

* **Help**: `Asking for Help Tips`_
* **Documentation**: http://docs.zephyrproject.org (`Getting Started Guide`_)
* **Source Code**: https://github.com/zephyrproject-rtos/zephyr is the main
  repository; https://elixir.bootlin.com/zephyr/latest/source contains a
  searchable index
* **Releases**: https://github.com/zephyrproject-rtos/zephyr/releases
* **Samples and example code**: see `Sample and Demo Code Examples`_
* **Mailing Lists**: users@lists.zephyrproject.org and
  devel@lists.zephyrproject.org are the main user and developer mailing lists,
  respectively. You can join the developer's list and search its archives at
  `Zephyr Development mailing list`_. The other `Zephyr mailing list
  subgroups`_ have their own archives and sign-up pages.
* **Nightly CI Build Status**: https://lists.zephyrproject.org/g/builds
  The builds@lists.zephyrproject.org mailing list archives the CI nightly build results.
* **Chat**: Real-time chat happens in Zephyr's Discord Server. Use
  this `Discord Invite`_ to register.
* **Contributing**: see the `Contribution Guide`_
* **Wiki**: `Zephyr GitHub wiki`_
* **Issues**: https://github.com/zephyrproject-rtos/zephyr/issues
* **Security Issues**: Email vulnerabilities@zephyrproject.org to report
  security issues; also see our `Security`_ documentation. Security issues are
  tracked separately at https://zephyrprojectsec.atlassian.net.
* **Zephyr Project Website**: https://zephyrproject.org

.. _Discord Invite: https://chat.zephyrproject.org
.. _supported boards: http://docs.zephyrproject.org/latest/boards/index.html
.. _Zephyr Documentation: http://docs.zephyrproject.org
.. _Introduction to Zephyr: http://docs.zephyrproject.org/latest/introduction/index.html
.. _Getting Started Guide: http://docs.zephyrproject.org/latest/develop/getting_started/index.html
.. _Contribution Guide: http://docs.zephyrproject.org/latest/contribute/index.html
.. _Zephyr GitHub wiki: https://github.com/zephyrproject-rtos/zephyr/wiki
.. _Zephyr Development mailing list: https://lists.zephyrproject.org/g/devel
.. _Zephyr mailing list subgroups: https://lists.zephyrproject.org/g/main/subgroups
.. _Sample and Demo Code Examples: http://docs.zephyrproject.org/latest/samples/index.html
.. _Security: http://docs.zephyrproject.org/latest/security/index.html
.. _Asking for Help Tips: https://docs.zephyrproject.org/latest/develop/getting_started/index.html#asking-for-help