On Wed 30-11-16 21:12:52, Boris Zhmurov wrote: > Michal Hocko 30/11/16 20:48: > > >> Well, after some testing I may say, that your patch: > >> ---------------------8<----------------------------------- > >> commit 7cebc6b63bf75db48cb19a94564c39294fd40959 > >> Author: Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx> > >> Date: Fri Nov 25 12:48:10 2016 -0800 > >> > >> mm: Prevent shrink_node_memcg() RCU CPU stall warnings > >> ---------------------8<----------------------------------- > >> > >> fixes stall warning and dmesg is clean now. > > > > Do I get it right that s@cond_resched_rcu_qs@cond_resched@ didn't help? > > I didn't try that. I've tried 4 patches from Paul's linux-rcu tree. > I can try another portion of patches, no problem :) Replacing cond_resched_rcu_qs in shrink_node_memcg by cond_resched would be really helpful to tell whether we are missing a real scheduling point or whether something more serious is going on here. -- Michal Hocko SUSE Labs -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>