Hello! This series provides NOCB-CPU updates: 1. Add/del rdp to iterate from rcuog itself, courtesy of Frederic Weisbecker. 2. Invert rcu_state.barrier_mutex VS hotplug lock locking order, courtesy of Zqiang. 3. Fix NOCB kthreads spawn failure with rcu_nocb_rdp_deoffload() direct call, courtesy of Zqiang. 4. Add an option to offload all CPUs on boot, courtesy of Joel Fernandes. 5. Add nocb_cb_kthread check to rcu_is_callbacks_kthread(), courtesy of Zqiang. 6. Add option to opt rcuo kthreads out of RT priority, courtesy of "Uladzislau Rezki (Sony)". 7. Avoid polling when my_rdp->nocb_head_rdp list is empty, courtesy of Zqiang. Thanx, Paul ------------------------------------------------------------------------ b/Documentation/admin-guide/kernel-parameters.txt | 6 b/kernel/rcu/Kconfig | 13 ++ b/kernel/rcu/tree.c | 4 b/kernel/rcu/tree.h | 1 b/kernel/rcu/tree_nocb.h | 138 +++++++++++----------- b/kernel/rcu/tree_plugin.h | 33 +++-- kernel/rcu/Kconfig | 16 ++ kernel/rcu/tree.c | 6 kernel/rcu/tree.h | 2 kernel/rcu/tree_nocb.h | 130 ++++++++++++++++---- 10 files changed, 236 insertions(+), 113 deletions(-)
