On 08/26/11 16:55, Paul E. McKenney wrote: > On Wed, Aug 24, 2011 at 04:58:49PM -0700, Frank Rowand wrote: >> On 08/13/11 03:53, Peter Zijlstra wrote: >>> >>> Whee, I can skip release announcements too! >>> >>> So no the subject ain't no mistake its not, 3.0.1-rt11 is there for the >>> grabs. >>> >>> Changes include (including the missing -rt10): >>> >>> - hrtimer fix that should make RT_GROUP work again >>> - RCU fixes that should make the RCU stalls go away >>> - fixes SMP=n builds after breaking them in -rt9 >> >> I have a consistent (every boot) hang on boot. With a few >> hacks to get console output, I get the >> >> rcu_preempt_state detected stalls on CPUs/tasks >> >> messages in the attached console log. < snip > > > Hmmm... The last few that I have seen that looked like this were > due to my messing up rcutorture so that the RCU-boost testing kthreads > ran CPU-bound at real-time priority. > > Is it possible that something similar is happening on your system? > > Thanx, Paul I don't think so. That would require CONFIG_RCU_TORTURE_TEST, correct? And that is not set: < way big snip > >> # CONFIG_RCU_TORTURE_TEST is not set >> CONFIG_RCU_CPU_STALL_TIMEOUT=60 >> CONFIG_RCU_CPU_STALL_VERBOSE=y I'm finally getting back to this today, so I'm starting to learn about the RCU stall detector, so maybe I can make some more sense of this. -Frank -- 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
