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Tom Parkin says: ==================== l2tp: replace custom logging code with tracepoints The l2tp subsystem implemented custom logging macros for debugging purposes which were controlled using a set of debugging flags in each tunnel and session structure. A more standard and easier-to-use approach is to use tracepoints. This patchset refactors l2tp to: * remove excessive logging * tweak useful log messages to use the standard pr_* calls for logging rather than the l2tp wrappers * replace debug-level logging with tracepoints * add tracepoints for capturing tunnel and session lifetime events I note that checkpatch.pl warns about the layout of code in the newly-added file net/l2tp/trace.h. When adding this file I followed the example(s) of other tracepoint files in the net/ subtree since it seemed preferable to adhere to the prevailing style rather than follow checkpatch.pl's advice in this instance. If that's the wrong approach please let me know. v1 -> v2 * Fix up a build warning found by the kernel test robot ==================== Signed-off-by: David S. Miller <davem@davemloft.net> |
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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.