mirror of https://git.yoctoproject.org/poky synced 2026-05-07 16:59:22 +00:00

T

Richard Purdie 37c31a5adc bitbake: lib: Drop inotify support and replace with mtime checks

With the flush in serverlog() removed and a memory resident bitbake with a
60s timeout, the following could fail in strange ways:

rm bitbake-cookerdaemon.log
bitbake-layers add-layer ../meta-virtualization/
bitbake-layers add-layer ../meta-openembedded/meta-oe/
bitbake -m

specifically that it might error adding meta-oe with an error related to meta-virt.

This clearly shows that whilst bblayers.conf was modified, bitbake was not
recognising that. This would fit with the random autobuilder issues seen when
the serverlog flush() call was removed.

The issue appears to be that you have no way to "sync()" the inotify events with
the command stream coming over the socket. There is no way to know if there are
changes in the IO queue which bitbake needs to wait for before proceeding with
the next command.

I did experiment with os.sync() and fsync on the inotify fd, however nothing
addressed the issue. Since it is extremely important we have accurate cache data,
the only realistic thing to do is to switch to stat() calls and check mtime.

For bitbake commands, this is straightforward since we can revalidate the cache
upon new connections/commands. For tinfoil this is problematic and we need to
introduce and explict command "revalidateCaches" that the code can use to force
bitbake to re-check it's cache validity. I've exposed this through tinfoil with
a new "modified_files" function.

So, this patch:

a) drops inotify support within bitbake's cooker/server and switch to using mtime
b) requires a new function call in tinfoil when metadata has been modified

(Bitbake rev: da3ec3801bdb80180b3f1ac24edb27a698415ff7)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

2023-09-18 11:35:05 +01:00

bitbake

bitbake: lib: Drop inotify support and replace with mtime checks

2023-09-18 11:35:05 +01:00

contrib

contrib/git-hooks: add a sendemail-validate example hook that adds FROM: lines to outgoing patch emails

2020-12-30 14:01:07 +00:00

documentation

Add libacl to required packages

2023-09-09 12:01:09 +01:00

README.md

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

Please refer to our contributor guide here: https://docs.yoctoproject.org/dev/contributor-guide/ for full details on how to submit changes.

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/):

Git repository: https://git.openembedded.org/openembedded-core/
Mailing list: openembedded-core@lists.openembedded.org

BitBake (files in bitbake/):

Git repository: https://git.openembedded.org/bitbake/
Mailing list: bitbake-devel@lists.openembedded.org

Documentation (files in documentation/):

Git repository: https://git.yoctoproject.org/cgit/cgit.cgi/yocto-docs/
Mailing list: docs@lists.yoctoproject.org

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

Git repository: https://git.yoctoproject.org/cgit/cgit.cgi/meta-yocto
Mailing list: poky@lists.yoctoproject.org

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.