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0ab6a3ddba
hrtimer_start_range_ns() has a WARN_ONCE() which verifies that a timer which is marker for softirq expiry is not queued in the hard interrupt base and vice versa. When PREEMPT_RT is enabled, timers which are not explicitely marked to expire in hard interrupt context are deferrred to the soft interrupt. So the regular check would trigger. Change the check, so when PREEMPT_RT is enabled, it is verified that the timers marked for hard interrupt expiry are not tried to be queued for soft interrupt expiry or any of the unmarked and softirq marked is tried to be expired in hard interrupt context. Signed-off-by: Thomas Gleixner <tglx@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.