Re: FUSYN and RT

[Daniel Walker]

On Tue, 2005-04-12 at 13:33, Joe Korty wrote:
> On Tue, Apr 12, 2005 at 11:15:02AM -0700, Daniel Walker wrote:
> 
> > It seems like these two locks are going to interact on a very limited
> > basis. Fusyn will be the user space mutex, and the RT mutex is only in
> > the kernel. You can't lock an RT mutex and hold it, then lock a Fusyn
> > mutex (anyone disagree?). That is assuming Fusyn stays in user space.
> 
> Well yeah, but you could lock a fusyn, then invoke a system call which
> locks a kernel semaphore.


Right .. For deadlock detection, I want to assume that the fusyn lock is
on the outer level. That way both deadlock detection system will work
properly (in theory).

Daniel 

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