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David Disseldorp 7be37c94da
initramfs: allocate heap buffers together
header_buf, symlink_buf and name_buf all share the same lifecycle so
needn't be allocated / freed separately. This change leads to a minor
reduction in .text size:

before:
   text    data     bss     dec     hex filename
   7914    1110       8    9032    2348 init/initramfs.o

after:
   text    data     bss     dec     hex filename
   7854    1110       8    8972    230c init/initramfs.o

A previous iteration of this patch reused a single buffer instead of
three, given that buffer use is state-sequential (GotHeader, GotName,
GotSymlink). However, the slight decrease in heap use during early boot
isn't really worth the extra review complexity.

Link: https://lore.kernel.org/all/20241107002044.16477-7-ddiss@suse.de/
Signed-off-by: David Disseldorp <ddiss@suse.de>
Link: https://lore.kernel.org/r/20250304061020.9815-6-ddiss@suse.de
Signed-off-by: Christian Brauner <brauner@kernel.org>
History 2025-03-08 12:13:26 +01:00
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README

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.