Go to file
Andy Ross 8bdabcc46b kernel/sched: Move thread suspend and abort under the scheduler lock
Historically, these routines were placed in thread.c and would use the
scheduler via exported, synchronized functions (e.g. "remove from
ready queue").  But those steps were very fine grained, and there were
races where the thread could be seen by other contexts (in particular
under SMP) in an intermediate state.  It's not completely clear to me
that any of these were fatal bugs, but it's very hard to prove they
weren't.

At best, this is fragile.  Move the z_thread_single_suspend/abort()
functions into the scheduler and do the scheduler logic in a single
critical section.

Signed-off-by: Andy Ross <andrew.j.ross@intel.com>
2020-01-08 14:21:10 +01:00
.github/ISSUE_TEMPLATE Revert "github: Add plumbing of using the github workflow labeler" 2019-11-06 19:46:32 +01:00
.known-issues doc: add .known-issue regex for struct bt_mesh_model_pub warnings 2019-12-12 12:39:35 -06:00
arch devicetree: Remove DT_SRAM_{BASE_ADDRESS,SIZE}, use CONFIG_* versions 2020-01-07 17:19:36 +01:00
boards boards: litex_vexriscv: Enable LiteX PWM driver 2020-01-08 11:04:36 +01:00
cmake cmake: toolchain: Fix 'host' toolchain variant 2020-01-07 13:25:47 -05:00
doc doc: release notes: Update contents for 2.2 2020-01-07 18:13:18 +01:00
drivers drivers: pwm: Add driver for LiteX PWM peripherial 2020-01-08 11:04:36 +01:00
dts boards: litex_vexriscv: Enable LiteX PWM driver 2020-01-08 11:04:36 +01:00
ext global: Remove leading/trailing blank lines in files 2019-12-11 19:17:27 +01:00
include irq: add note about irq_lock/unlock access 2020-01-08 08:20:48 -05:00
kernel kernel/sched: Move thread suspend and abort under the scheduler lock 2020-01-08 14:21:10 +01:00
lib lib: os: make snprintk fns generally available 2020-01-03 10:13:30 +01:00
misc license: cleanup: add SPDX Apache-2.0 license identifier 2019-04-07 08:45:22 -04:00
modules kconfig: NXP IMX: Remove unused HAS_IMX_{RDC,CCM} symbols 2020-01-03 07:25:49 -06:00
samples samples: rgb_led: add support for PWM flags 2020-01-07 18:13:18 +01:00
scripts gen_defines: close files before exit 2020-01-07 21:06:58 +01:00
soc devicetree: Remove DT_SRAM_{BASE_ADDRESS,SIZE}, use CONFIG_* versions 2020-01-07 17:19:36 +01:00
subsys net: tcp2: Drop snprintf() and use snprintk() 2020-01-08 14:10:21 +02:00
tests net: core: Drop NET_ASSERT_INFO() macro 2020-01-08 14:10:21 +02:00
.checkpatch.conf scripts/checkpatch.pl: fix root dir detection and enable it 2019-05-22 12:40:20 -04:00
.clang-format
.codecov.yml
.editorconfig editorconfig: Set insert_final_newline true 2019-04-10 14:15:38 +02:00
.gitattributes
.gitignore docs: guide: Add build system information 2019-11-15 14:58:51 -05:00
.gitlint gitlint: match max title length restriction with checkpatch 2019-05-29 14:43:16 -04:00
.mailmap mailmap: add entry for Sean Nyekjaer 2019-11-04 14:33:31 +01:00
.shippable.yml ci: use v0.10.1 docker image 2019-12-18 10:15:45 +01:00
.uncrustify.cfg
CMakeLists.txt scripts: cmake: move print from python to cmake 2020-01-03 08:20:08 -05:00
CODE_OF_CONDUCT.md
CODEOWNERS drivers: pwm: Add driver for LiteX PWM peripherial 2020-01-08 11:04:36 +01:00
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 boards: Kconfig: Enable use of shield conditional Kconfig files 2020-01-02 17:02:41 -05:00
LICENSE
Makefile doc: add clean target to Makefile 2019-02-05 16:58:14 -05:00
README.rst global: Remove leading/trailing blank lines in files 2019-12-11 19:17:27 +01:00
VERSION release: post release patch level = 99 2019-12-09 21:53:34 -05:00
version.h.in cmake: explain BUILD_VERSION and KERNEL_VERSION_* 2019-05-09 11:52:05 +02:00
west.yml west: Add LoRaMac-node module 2019-12-21 12:20:24 +01:00
zephyr-env.cmd scripts: remove west from scripts/ 2019-01-29 10:15:01 +01:00
zephyr-env.sh zephyr_env.sh: Remove semicolons at ends of lines 2019-12-10 14:34:46 -08:00

.. raw:: html

   <a href="https://www.zephyrproject.org">
     <p align="center">
       <img src="doc/images/Zephyr-Project.png">
     </p>
   </a>

   <a href="https://bestpractices.coreinfrastructure.org/projects/74"><img
   src="https://bestpractices.coreinfrastructure.org/projects/74/badge"></a>
   <img
   src="https://api.shippable.com/projects/58ffb2b8baa5e307002e1d79/badge?branch=master">


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-M,
Intel x86, ARC, Nios II, Tensilica Xtensa, and RISC-V, and a large number of
`supported boards`_.

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

.. start_include_here

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.

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

Community support is provided via mailing lists and Slack; 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://zephyrproject.org/developers/#downloads
* **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
  (shippable) nightly build results.
* **Chat**: Zephyr's Slack workspace is https://zephyrproject.slack.com.  Use
  this `Slack 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

.. _Slack Invite: https://tinyurl.com/y5glwylp
.. _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/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/guides/getting-help.html