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7988e5ae2b
The nohz mode field tells about low resolution nohz mode or high resolution nohz mode but it doesn't tell about high resolution non-nohz mode. In order to retrieve the latter state, tick_cancel_sched_timer() must fiddle with struct hrtimer's internals to guess if the tick has been initialized in high resolution. Move instead the nohz mode field information into the tick flags and provide two new bits: one to know if the tick is in nohz mode and another one to know if the tick is in high resolution. The combination of those two flags provides all the needed informations to determine which of the three tick modes is running. Signed-off-by: Frederic Weisbecker <frederic@kernel.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/r/20240225225508.11587-14-frederic@kernel.org |
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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.