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daaab5b5bb
Introduce a new struct printk_buffers to contain all the buffers needed to read and format a printk message for output. Putting the buffers inside a struct reduces the number of buffer pointers that need to be tracked. Also, it allows usage of the sizeof() macro for the buffer sizes, rather than expecting certain sized buffers being passed in. Note that since the output buffer for normal consoles is now CONSOLE_EXT_LOG_MAX instead of CONSOLE_LOG_MAX, multi-line messages that may have been previously truncated will now be printed in full. This should be considered a feature and not a bug since the CONSOLE_LOG_MAX restriction was about limiting static buffer usage rather than limiting printed text. Signed-off-by: John Ogness <john.ogness@linutronix.de> Reviewed-by: Petr Mladek <pmladek@suse.com> Signed-off-by: Petr Mladek <pmladek@suse.com> Link: https://lore.kernel.org/r/20230109100800.1085541-5-john.ogness@linutronix.de
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 Restructured Text 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.