Hello! This series contains RCU-Tasks updates, including some -rt fixups, handling of systems with sparse CPU numbering, and a fix for a boot-time race-condition failure. 1. rcu-tasks: Fix race in schedule and flush work, courtesy of Padmanabha Srinivasaiah. 2. rcu-tasks: Print pre-stall-warning informational messages. 3. rcu-tasks: Use rcuwait for the rcu_tasks_kthread(), courtesy of Sebastian Andrzej Siewior. 4. rcu-tasks: Make Tasks RCU account for userspace execution. 5. rcu-tasks: Use schedule_hrtimeout_range() to wait for grace periods, courtesy of Sebastian Andrzej Siewior. 6. rcu-tasks: Restore use of timers for non-RT kernels. 7. rcu-tasks: Make show_rcu_tasks_generic_gp_kthread() check all CPUs. 8. rcu-tasks: Handle sparse cpu_possible_mask, courtesy of Eric Dumazet. 9. rcu-tasks: Handle sparse cpu_possible_mask in rcu_tasks_invoke_cbs(). Thanx, Paul ------------------------------------------------------------------------ b/Documentation/admin-guide/kernel-parameters.txt | 30 ++++++- b/include/linux/rcupdate.h | 1 b/kernel/rcu/tasks.h | 3 b/kernel/rcu/tree.c | 2 kernel/rcu/tasks.h | 92 +++++++++++++++++----- 5 files changed, 105 insertions(+), 23 deletions(-)
