Re: [RFC 0/3] Examples for the new sparse context tracking functionality

From: Paul E. McKenney
Date: Mon Apr 21 2008 - 10:55:38 EST


On Mon, Apr 21, 2008 at 10:25:55AM +0200, Johannes Berg wrote:
>
> > At some point in the future, we might want to distinguish between
> > the different flavors of RCU -- except that there is already common
> > code that doesn't care which flavor of RCU is in use, as long as
> > some sort of RCU is present. So make that "some point in the distant
> > future"...
>
> No big deal, just declare
>
> my_specific_rcu_get() __acquires(RCU) __acquires(specificRCU);
>
> and then annotate whatever needs the specific RCU type with
> __requires(specificRCU)

Cute!!! I didn't realize you could mark a single interface with
multiple __acquires() markings.

So if there is at least one match, sparse is happy?

Thanx, Paul
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