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PTP implements an inline switch case for taking timestamps from various POSIX clock IDs, which already consumes quite some text space. Expanding it for auxiliary clocks really becomes too big for inlining. Provide a out of line version. The function invalidates the timestamp in case the clock is invalid. The invalidation allows to implement a validation check without the need to propagate a return value through deep existing call chains. Due to merge logistics this temporarily defines CLOCK_AUX[_LAST] if undefined, so that the plain branch, which does not contain any of the core timekeeper changes, can be pulled into the networking tree as prerequisite for the PTP side changes. These temporary defines are removed after that branch is merged into the tip::timers/ptp branch. That way the result in -next or upstream in the next merge window has zero dependencies. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Vadim Fedorenko <vadim.fedorenko@linux.dev> Acked-by: John Stultz <jstultz@google.com> Link: https://lore.kernel.org/all/20250701132628.357686408@linutronix.de |
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| ipc | ||
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| lib | ||
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| .clang-format | ||
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| .cocciconfig | ||
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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.