On Sun, 15 Jul 2012, Mike Galbraith wrote: > On Sun, 2012-07-15 at 10:59 +0200, Thomas Gleixner wrote: > > On Fri, 13 Jul 2012, Jan Kara wrote: > > > On Fri 13-07-12 16:25:05, Thomas Gleixner wrote: > > > > So the patch below should allow the unplug to take place when blocked > > > > on mutexes etc. > > > Thanks for the patch! Mike will give it some testing. > > > > I just found out that this patch will explode nicely when the unplug > > code runs into a contended lock. Then we try to block on that lock and > > make the rtmutex code unhappy as we are already blocked on something > > else. > > Kinda like so? My x3550 M3 just exploded. Aw poo.
Yep. Would have surprised me if it never triggered. > > So no, it's not a solution to the problem. Sigh. > > > > Can you figure out on which lock the stuck thread which did not unplug > > due to tsk_is_pi_blocked was blocked? > > I'll take a peek. Thanks! -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
