Re: 2.6.16-rt7 and deadlock detection.

[Esben Nielsen]

On Sun, 26 Mar 2006, Esben Nielsen wrote:

> I don't get any print outs of any deadlock detection with many of my
> tests.
> When there is a deadlock down() simply returns instead of blocking
> forever.

rt_mutex_slowlock seems to return -EDEADLK even though caller didn't ask
for deadlock detection (detect_deadlock=0). That is bad because then the
caller will not check for it. It ought to simply leave the task blocked.

It only happens with CONFIG_DEBUG_RT_MUTEXES. That one also messes up the
task->pi_waiters as earlier reported.

Esben

>
> Esben
>
>
>
> On Sun, 26 Mar 2006, Esben Nielsen wrote:
>
> > It just looks like also normal, non-rt tasks are boosting.
> >
> > Esben
> >
> >
> > -
> > 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/
> >
>
> -
> 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/
>

-
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/