Hi Paul, Today's linux-next merge of the rcu tree got a conflict in kernel/rcutree.h between commit 62ab7072476a ("rcu: Use smp_hotplug_thread facility for RCUs per-CPU kthread") from the tip tree and commit daa5d37ff51b ("rcu: Prevent force_quiescent_state() memory contention") from the rcu tree. Just context changes (I think). I fixed it up (see below) and can carry the fix as necessary. -- Cheers, Stephen Rothwell sfr@canb.auug.org.au diff --cc kernel/rcutree.h index 1224d4c,c2a3e7d..0000000 --- a/kernel/rcutree.h +++ b/kernel/rcutree.h @@@ -196,6 -200,13 +200,7 @@@ struct rcu_node /* Refused to boost: not sure why, though. */ /* This can happen due to race conditions. */ #endif /* #ifdef CONFIG_RCU_BOOST */ - struct task_struct *node_kthread_task; - /* kthread that takes care of this rcu_node */ - /* structure, for example, awakening the */ - /* per-CPU kthreads as needed. */ - unsigned int node_kthread_status; - /* State of node_kthread_task for tracing. */ + raw_spinlock_t fqslock ____cacheline_internodealigned_in_smp; } ____cacheline_internodealigned_in_smp; /*