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bacf921c42
The core function provides an operation for userspace application to retrieve current value of CYCLE_TIMER register with several types of system time. In the operation, local interrupt is disables so that the access of the register and ktime are done atomically. This commit uses guard macro to disable/enable local interrupts. Link: https://lore.kernel.org/r/20240805085408.251763-9-o-takashi@sakamocchi.jp Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
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.