Hello!
This series contains updates to RCU's grace-period processsing, mostly
to improve debuggability of RCU itself.
1. Add consistency checks to the grace-period initialization logic.
2. Prevent spurious-wakeup DoS attack on rcu_gp_kthread.
3. Flag lockless accesses to ->gp_flags with ACCESS_ONCE().
4-6. Add event tracing to various aspects of RCU grace period processing.
7. Distinguish between NOCB and non-NOCB rcu_callback trace events.
8. Add event tracing to track rcu_nocb_kthread() sleeping and awakening.
9. Avoid sparse warnings in rcu_nocb_wake trace event.
10. Make RCU use resched_cpu() instead of the current set_need_resched(),
courtesy of Peter Zijlstra.
Thanx, Paul
b/include/trace/events/rcu.h | 80 +++++++++++++++++++++++++++++++++++--------
b/kernel/rcutiny.c | 2 -
b/kernel/rcutree.c | 71 ++++++++++++++++++++++++++++++++------
b/kernel/rcutree_plugin.h | 35 ++++++++++++++++--
b/kernel/sched/core.c | 10 +----
5 files changed, 160 insertions(+), 38 deletions(-)
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