mirror of
https://github.com/hardkernel/linux.git
synced 2026-06-04 02:02:28 +09:00
da6ff09943
The push-IPI logic for RT tasks expects to be invoked from hardirq context. One reason is that a RT task on the remote CPU would block the softirq processing on PREEMPT_RT and so avoid pulling / balancing the RT tasks as intended. Annotate root_domain::rto_push_work as IRQ_WORK_HARD_IRQ. Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lkml.kernel.org/r/20211006111852.1514359-2-bigeasy@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.