Re: RCU use of swait

[Sebastian Andrzej Siewior]

On 2020-03-04 16:35:26 [-0800], Paul E. McKenney wrote:
> Hello!
Hi Paul,

> Or is there some other reason why {S,}RCU needs to use swait that I
> am forgetting?

swait can be used in hardirq-context (on RT) that is in a section within
local_irq_save() / raw_spin_lock() and so.
wait on the hand uses spinlock_t which can not be used in this context.
So if you have no users which fall into that category then you could
move back to wait.h.

> 							Thanx, Paul
Sebastian