On Wed 30-11-16 20:41:20, Boris Zhmurov wrote: > Paul E. McKenney 28/11/16 18:05: > > >>>> So Paul, I've dropped "mm: Prevent shrink_node_memcg() RCU CPU stall > >>>> warnings" patch, and stalls got back (attached). > >>>> > >>>> With this patch "commit 7cebc6b63bf75db48cb19a94564c39294fd40959" from > >>>> your tree stalls gone. Looks like that. > >>> > >>> So with only this commit and no other commit or configuration adjustment, > >>> everything works? Or it the solution this commit and some other stuff? > >>> > >>> The reason I ask is that if just this commit does the trick, I should > >>> drop the others. > >> > >> I'd like to ask for some more time to make sure this is it. > >> Approximately 2 or 3 days. > > > > Works for me! > > > 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? -- 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>