zephyr

History

Andy Ross 9f06a35450 kernel: Add the old "multi queue" scheduler algorithm as an option Zephyr 1.12 removed the old scheduler and replaced it with the choice of a "dumb" list or a balanced tree. But the old multi-queue algorithm is still useful in the space between these two (applications with large-ish numbers of runnable threads, but that don't need fancy features like EDF or SMP affinity). So add it as a CONFIG_SCHED_MULTIQ option. Signed-off-by: Andy Ross <andrew.j.ross@intel.com>		2018-07-03 17:09:15 -04:00
..
src	kbuild: Removed KBuild	2017-11-08 20:00:22 -05:00
CMakeLists.txt	cmake: remove IS_TEST handling	2018-01-08 10:03:57 -05:00
README.rst	doc: getting_started: Support multi-OS instructions	2018-01-18 16:53:31 -05:00
prj.conf	kernel: Add the old "multi queue" scheduler algorithm as an option	2018-07-03 17:09:15 -04:00
prj_single.conf	samples: add configuration for single threaded hello world	2016-12-17 16:54:45 +00:00
sample.yaml	samples: cleanup sample test naming	2018-06-11 17:11:18 -04:00

README.rst

.. _hello_world:

Hello World
###########

Overview
********
A simple Hello World example that can be used with any supported board and
prints 'Hello World' to the console. This application can be built into modes:

* single thread
* multi threading

Building and Running
********************

This project outputs 'Hello World' to the console.  It can be built and executed
on QEMU as follows:

.. zephyr-app-commands::
   :zephyr-app: samples/hello_world
   :host-os: unix
   :board: qemu_x86
   :goals: run
   :compact:

To build the single thread version, use the supplied configuration file for
single thread: :file:`prj_single.conf`:

.. zephyr-app-commands::
   :zephyr-app: samples/hello_world
   :host-os: unix
   :board: qemu_x86
   :conf: prj_single.conf
   :goals: run
   :compact:

Sample Output
=============

.. code-block:: console

    Hello World! x86