Re: rw_semaphores

From: yodaiken@fsmlabs.com
Date: Mon Apr 16 2001 - 09:39:12 EST


On Tue, Apr 10, 2001 at 08:47:34AM +0100, David Howells wrote:
>
> Since you're willing to use CMPXCHG in your suggested implementation, would it
> make it make life easier if you were willing to use XADD too?
>
> Plus, are you really willing to limit the number of readers or writers to be
> 32767? If so, I think I can suggest a way that limits it to ~65535 apiece
> instead...

I'm trying to imagine a case where 32,000 sharing a semaphore was anything but a
major failure and I can't. To me: the result of an attempt by the 32,768th locker
should be a kernel panic. Is there a reasonable scenario where this is wrong?

        
>
> David
> -
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
> Please read the FAQ at http://www.tux.org/lkml/

-- 
---------------------------------------------------------
Victor Yodaiken 
Finite State Machine Labs: The RTLinux Company.
 www.fsmlabs.com  www.rtlinux.com

- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/



This archive was generated by hypermail 2b29 : Mon Apr 23 2001 - 21:00:19 EST