Hi Paul, After merging the rcu tree, today's linux-next build (x86_64 allmodconfig) failed like this:
ERROR: "rcu_cpu_stall_suppress" [kernel/rcu/rcutorture.ko] undefined! ERROR: "rcu_cpu_stall_suppress" [kernel/rcu/rcuperf.ko] undefined! Caused by commit 909bd6e3d9e7 ("rcu: Suppress RCU CPU stall warnings while dumping trace") I have reverted that commit for today. -- Cheers, Stephen Rothwell