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The implementation of the NOHZ pull at expiry model will change the timer bases per CPU. Timers, that have to expire on a specific CPU, require the TIMER_PINNED flag. If the CPU doesn't matter, the TIMER_PINNED flag must be dropped. This is required for call sites which use the timer alternately as pinned and not pinned timer like workqueues do. Therefore use add_timer_global() in __queue_delayed_work() for non-bound delayed work to make sure the TIMER_PINNED flag is dropped. Signed-off-by: Anna-Maria Behnsen <anna-maria@linutronix.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Frederic Weisbecker <frederic@kernel.org> Acked-by: Tejun Heo <tj@kernel.org> Link: https://lore.kernel.org/r/20240221090548.36600-7-anna-maria@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.