On 2018-09-28 21:03:51 [+0000], Julia Cartwright wrote:

In order to enable the queuing of kthread work items from hardirq
context even when PREEMPT_RT_FULL is enabled, convert the worker
spin_lock to a raw_spin_lock.

This is only acceptable to do because the work performed under the lock
is well-bounded and minimal.

Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Guenter Roeck <linux@roeck-us.net>
Reported-and-tested-by: Steffen Trumtrar <redacted>
Reported-by: Tim Sander <redacted>
Signed-off-by: Julia Cartwright <redacted>

Acked-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>

Sebastian