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When initcall_debug is specified on the command line, the start and return point for each initcall is printed. However, no information on the initcall level is reported. Add to the initcall_debug infrastructure an additional print that informs when a new initcall level is entered. This is particularly useful when debugging dependency chains and/or working on boot time reduction. Link: https://lkml.kernel.org/r/20250316205014.2830071-2-francesco@valla.it Signed-off-by: Francesco Valla <francesco@valla.it> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Tim Bird <tim.bird@sony.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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.