On Tue, Feb 24, 2015 at 2:50 PM, Mike Galbraith <umgwanakikbuti@xxxxxxxxx> wrote: > On Tue, 2015-02-24 at 13:19 -0300, Gustavo Bittencourt wrote: >> >> The deadlock returned after I applied this patch in v3.18.7-rt2. Here is my log: > > > Hrmph. I definitely want your patch to die ;-) It adds a whole new > dimension to ww_mutex that only now exists in -rt. That's not good. No problem. > My > patchlet may not be perfect either, but it lets ww_mutex do that return > EALREADY business it's supposed to, vs going straight to while(1). We > can't have it both ways, so I suppose I'll fire up my old Q6600 box > (that doesn't have annoying GTX980 that my userspace can't deal with DRM > wise), and see if I can chase the nouveau thing down. I'm not all that > enthusiastic though, as there are or at least were other issues with > nouveau. Sebastian reported some completely _missing_ locking IIRC, > that led to his box exploding. Is there anyway that I could help? I think I can write a code to reproduce the deadlock without the nouveau driver. -- To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
