Re: Does anyone use CONFIG_TINY_PREEMPT_RCU?

From: Frederic Weisbecker
Date: Mon Nov 12 2012 - 20:12:18 EST


2012/11/13 Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx>:
> Hello!
>
> I know of people using TINY_RCU, TREE_RCU, and TREE_PREEMPT_RCU, but I
> have not heard of anyone using TINY_PREEMPT_RCU for whom TREE_PREEMPT_RCU
> was not a viable option (in contrast, the people running Linux on
> tiny-memmory systems typically use TINY_RCU). Of course, if no one
> really needs it, the proper thing to do is to remove it.
>
> So, if you need TINY_PREEMPT_RCU, please let me know. Otherwise, I will
> remove it, probably in the 3.9 timeframe.

I don't use it personally but if you remove it, does that mean that
RCU couldn't be preemptible on UP?
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