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kernel-dev: Re-write of the "Features" section.

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first real re-write of this section.

(From yocto-docs rev: 09a9d0978d939f40782179f9fd46ccd7b999c262)

Signed-off-by: Scott Rifenbark <scott.m.rifenbark@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Scott Rifenbark
2013-01-08 10:09:29 -08:00
committed by Richard Purdie
parent 472d58a06e
commit 48f8d9c2cc
1 changed files with 11 additions and 11 deletions
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22
documentation/kernel-dev/kernel-dev-advanced.xml
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@@ -849,17 +849,14 @@ The description file can include multiple patch statements, one per patch.
<title>Features</title> <title>Features</title>
<para> <para>
Features are a combination of configuration fragments and patches. Features are complex kernel Metadata types that consist
Or, more accurately, configuration fragments and patches are of configuration fragments (<filename>kconf</filename>), patches
simple forms of a feature, which is a more complex metadata type. (<filename>patch</filename>), and possibly other feature
In addition to the <filename>kconf</filename> and description files (<filename>include</filename>).
<filename>patch</filename> commands, features often aggregate
description files with the <filename>include</filename> command.
</para> </para>
<para> <para>
A hypothetical example of a feature description file might look Here is an example that shows a feature description file:
like the following:
<literallayout class='monospaced'> <literallayout class='monospaced'>
features/myfeature.scc features/myfeature.scc
define KFEATURE_DESCRIPTION "Enable myfeature" define KFEATURE_DESCRIPTION "Enable myfeature"
@@ -870,12 +867,15 @@ The description file can include multiple patch statements, one per patch.
include cfg/myfeature_dependency.scc include cfg/myfeature_dependency.scc
kconf non-hardware myfeature.cfg kconf non-hardware myfeature.cfg
</literallayout> </literallayout>
This example shows how the <filename>patch</filename> and
<filename>kconf</filename> commands are used as well as
how an additional feature description file is included.
</para> </para>
<para> <para>
Features are typically less granular than configuration Typically, features are less granular than configuration
fragments and are more likely than configurations fragments fragments and are more likely than configuration fragments
and patches to be the types of things you will want to specify and patches to be the types of things you want to specify
in the <filename>KERNEL_FEATURES</filename> variable of the in the <filename>KERNEL_FEATURES</filename> variable of the
Linux kernel recipe. Linux kernel recipe.
See the "<link linkend='using-kernel-metadata-in-a-recipe'>Using Kernel Metadata in a Recipe</link>" See the "<link linkend='using-kernel-metadata-in-a-recipe'>Using Kernel Metadata in a Recipe</link>"