Bruce Ashfield 2888cb39c1 kern-tools: integrate ZFS speedup patch
Bumping the SRCREV to integrat the following kern-tools change:

   commit 2d01f24bc78256c709728eb3f204491bce13e0e5
   Author: Volodymyr Babchuk <Volodymyr_Babchuk@epam.com>
   Date:   Fri Nov 4 23:32:38 2022 +0000

       kconf_check: store some files in tmpdir

       Some file systems, like ZFS, are very slow at appending to existing
       files. Due to Copy-On-Write nature, they create a new copy of a file
       each time we do ">>" in a shell script. This becomes very noticeable
       if shell script does lots and lots of appends, like sanitize_fragment()
       function in kconf_check. On my setup, do_kernel_configcheck task takes
       literally hours to complete.

       To fix this issue, we can store sanitized_list and fragment_errors.txt
       files on tmpfs, which is extremely fast at writing. As most distros
       use tmpfs for /tmp, logical step is to use `mktemp` to create
       temporary files.

       After completing writing to temporary locations, we can move those two
       files back to ${LOGDIR}.

       Also, function 'cleanup' was added to remove temporary files in case
       of abnormal exit.

       With this patch, do_kernel_configcheck task completes in ~2 minutes on
       my setup, which is a great improvement.

       Signed-off-by: Volodymyr Babchuk <volodymyr_babchuk@epam.com>

(From OE-Core rev: 9d50e2606eb66019044ee176f355a84a65a1499c)

Signed-off-by: Bruce Ashfield <bruce.ashfield@gmail.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
2022-11-22 12:26:45 +00:00
2022-10-25 13:41:36 +01:00
2021-07-19 18:07:21 +01:00

Poky

Poky is an integration of various components to form a pre-packaged build system and development environment which is used as a development and validation tool by the Yocto Project. It features support for building customised embedded style device images and custom containers. There are reference demo images ranging from X11/GTK+ to Weston, commandline and more. The system supports cross-architecture application development using QEMU emulation and a standalone toolchain and SDK suitable for IDE integration.

Additional information on the specifics of hardware that Poky supports is available in README.hardware. Further hardware support can easily be added in the form of BSP layers which extend the systems capabilities in a modular way. Many layers are available and can be found through the layer index.

As an integration layer Poky consists of several upstream projects such as BitBake, OpenEmbedded-Core, Yocto documentation, the 'meta-yocto' layer which has configuration and hardware support components. These components are all part of the Yocto Project and OpenEmbedded ecosystems.

The Yocto Project has extensive documentation about the system including a reference manual which can be found at https://docs.yoctoproject.org/

OpenEmbedded is the build architecture used by Poky and the Yocto project. For information about OpenEmbedded, see the OpenEmbedded website.

Contribution Guidelines

The project works using a mailing list patch submission process. Patches should be sent to the mailing list for the repository the components originate from (see below). Throughout the Yocto Project, the README files in the component in question should detail where to send patches, who the maintainers are and where bugs should be reported.

A guide to submitting patches to OpenEmbedded is available at:

https://www.openembedded.org/wiki/How_to_submit_a_patch_to_OpenEmbedded

There is good documentation on how to write/format patches at:

https://www.openembedded.org/wiki/Commit_Patch_Message_Guidelines

Where to Send Patches

As Poky is an integration repository (built using a tool called combo-layer), patches against the various components should be sent to their respective upstreams:

OpenEmbedded-Core (files in meta/, meta-selftest/, meta-skeleton/, scripts/):

BitBake (files in bitbake/):

Documentation (files in documentation/):

meta-yocto (files in meta-poky/, meta-yocto-bsp/):

If in doubt, check the openembedded-core git repository for the content you intend to modify as most files are from there unless clearly one of the above categories. Before sending, be sure the patches apply cleanly to the current git repository branch in question.

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