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Peter Marheine 0a9728f87e twister: support parallel coverage with lcov >=2.0
lcov 2.0 added support for processing coverage data in parallel, which
provides a large speedup when processing many files, at the cost of some
additional overhead. When running the Chrome EC tests with coverage,
parallel reporting on a 36C72T machine reduces the time spent generating
coverage reports by 40 minutes (from approximately 1 hour to 20 minutes
total runtime), at the cost of about 3x greater CPU time overall
(assumed to be overhead for parallel processing, likely from spawning
much larger numbers of subprocesses).

The level of lcov parallelism is taken from the --jobs option passed to
twister, allowing lcov to choose if unspecified.

Signed-off-by: Peter Marheine <pmarheine@chromium.org>
2024-01-05 16:23:01 +01:00
.github CI bsim workflow: Update changed-files action version 2024-01-05 09:05:58 +01:00
arch xtensa: mmu: invalidate mem domain TLBs during page table swap 2023-12-27 15:59:05 +00:00
boards linkserver: nxp: enable linkserver to be the default runner 2024-01-05 14:29:18 +01:00
cmake zbus: add priority boost feature 2024-01-04 09:41:54 +01:00
doc drivers: ieee802154: nrf: make selective tx power the default 2024-01-05 09:04:17 +01:00
drivers drivers: regulator: add regulator-init-microamp property 2024-01-05 09:07:10 +01:00
dts drivers: regulator: add regulator-init-microamp property 2024-01-05 09:07:10 +01:00
include/zephyr Bluetooth: L2CAP: clarify BT_L2CAP_STATUS_OUT 2024-01-05 14:30:18 +01:00
kernel kernel: need_swap zephyrproject-rtos#66299 2024-01-04 09:42:12 +01:00
lib posix: clock: clock_gettime() should not be a syscall 2024-01-04 08:27:29 +09:00
misc cmake: modules: dts: use devicetree stub file 2023-10-20 12:18:17 -07:00
modules drivers: ieee802154: nrf: make selective tx power the default 2024-01-05 09:04:17 +01:00
samples samples: zbus: add priority boost sample to zbus 2024-01-04 09:41:54 +01:00
scripts twister: support parallel coverage with lcov >=2.0 2024-01-05 16:23:01 +01:00
share sysbuild: kconfig: Unset shield config value variable 2024-01-02 12:02:21 +00:00
snippets snippets: xen_dom0: add support for Renesas R-Car Gen3 boards 2023-09-15 11:15:00 +01:00
soc soc: arm: nxp_s32: s32k1: add FlexTimer support 2024-01-05 09:03:00 +01:00
submanifests manifest: zscilib: update revision for double promotion fix 2024-01-03 18:59:32 +00:00
subsys modem: cmux: Add DLCI receive buffer overrun LOG WRN 2024-01-05 14:30:56 +01:00
tests test: latency_measure: Update sample output 2024-01-05 14:35:53 +01:00
.checkpatch.conf
.clang-format Build System: clang-format: add K_SPINLOCK to FOR_EACH 2023-12-26 19:36:01 +00:00
.codecov.yml
.editorconfig
.gitattributes
.gitignore scripts: compliance: add a compliance check to keep blocks of code sorted 2023-11-13 09:41:05 +01:00
.gitlint .gitlint: de-duplicate defaults with zephyr_commit_rules.py 2023-09-21 09:29:24 +02:00
.mailmap
.yamllint
CMakeLists.txt cmake: Show executable for memory report 2023-12-15 15:32:37 +01:00
CODE_OF_CONDUCT.md coc: Update Code of Conduct to latest Contributor Covenant 2023-12-21 09:38:23 +00:00
CODEOWNERS CODEOWNERS: Update codeowners for SDHC Cadence 2023-12-18 15:00:38 +01:00
CONTRIBUTING.rst
Kconfig
Kconfig.zephyr kconfig: Add image size reduction option 2023-12-12 15:31:16 +01:00
LICENSE
MAINTAINERS.yml lib: move utilities into own folder 2023-12-22 09:54:12 +01:00
README.rst doc: README: Rework Resources section 2023-10-17 19:05:20 +03:00
VERSION release: bump main to v3.5.99 2023-10-20 14:32:45 +03:00
version.h.in
west.yml manifest: update hal_nordic revision 2024-01-05 09:04:17 +01:00
zephyr-env.cmd
zephyr-env.sh

.. 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:

Getting Started
---------------

  | 📖 `Zephyr Documentation`_
  | 🚀 `Getting Started Guide`_
  | 🙋🏽 `Tips when asking for help`_
  | 💻 `Code samples`_

Code and Development
--------------------

  | 🌐 `Source Code Repository`_
  | 📦 `Releases`_
  | 🤝 `Contribution Guide`_

Community and Support
---------------------

  | 💬 `Discord Server`_ for real-time community discussions
  | 📧 `User mailing list (users@lists.zephyrproject.org)`_
  | 📧 `Developer mailing list (devel@lists.zephyrproject.org)`_
  | 📬 `Other project mailing lists`_
  | 📚 `Project Wiki`_

Issue Tracking and Security
---------------------------

  | 🐛 `GitHub Issues`_
  | 🔒 `Security documentation`_
  | 🛡️ `Security Advisories Repository`_
  | ⚠️ Report security vulnerabilities at vulnerabilities@zephyrproject.org

Additional Resources
--------------------
  | 🌐 `Zephyr Project Website`_
  | 📺 `Zephyr Tech Talks`_

.. _Zephyr Project Website: https://www.zephyrproject.org
.. _Discord Server: https://chat.zephyrproject.org
.. _supported boards: https://docs.zephyrproject.org/latest/boards/index.html
.. _Zephyr Documentation: https://docs.zephyrproject.org
.. _Introduction to Zephyr: https://docs.zephyrproject.org/latest/introduction/index.html
.. _Getting Started Guide: https://docs.zephyrproject.org/latest/develop/getting_started/index.html
.. _Contribution Guide: https://docs.zephyrproject.org/latest/contribute/index.html
.. _Source Code Repository: https://github.com/zephyrproject-rtos/zephyr
.. _GitHub Issues: https://github.com/zephyrproject-rtos/zephyr/issues
.. _Releases: https://github.com/zephyrproject-rtos/zephyr/releases
.. _Project Wiki: https://github.com/zephyrproject-rtos/zephyr/wiki
.. _User mailing list (users@lists.zephyrproject.org): https://lists.zephyrproject.org/g/users
.. _Developer mailing list (devel@lists.zephyrproject.org): https://lists.zephyrproject.org/g/devel
.. _Other project mailing lists: https://lists.zephyrproject.org/g/main/subgroups
.. _Code samples: https://docs.zephyrproject.org/latest/samples/index.html
.. _Security documentation: https://docs.zephyrproject.org/latest/security/index.html
.. _Security Advisories Repository: https://github.com/zephyrproject-rtos/zephyr/security
.. _Tips when asking for help: https://docs.zephyrproject.org/latest/develop/getting_started/index.html#asking-for-help
.. _Zephyr Tech Talks: https://www.zephyrproject.org/tech-talks