Re: [PATCH] NMI request/release, version 3

Corey Minyard (cminyard@mvista.com)
Wed, 23 Oct 2002 13:03:11 -0500


Dipankar Sarma wrote:

>On Tue, Oct 22, 2002 at 04:36:51PM -0500, Corey Minyard wrote:
>
>Hmm... I am not sure if this is correct.
>
Yes, it's not correct, I will fix it. I didn't realize there was an
rcu-safe list. That should make things simpler.

>I probably have missed quite a few things here in these changes, but
>would be interesting to see if they could be made to work. One clear
>problem - someone does a release_nmi() and then a request_nmi()
>on the same handler while it is waiting for its RCU grace period
>to be over. Oh well :-)
>
Well, the documentation said "Don't do that!". But I think you are
right, I will make release_nmi() block until the item is free.

Thanks,

-Corey

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