Hello!
This series contains miscellaneous fixes for RCU:
1. Remove more read-modify-write ACCESS_ONCE() calls, courtesy of
Pranith Kumar.
2. Fix sparse warning for rcu_batches_completed_preempt(), courtesy
of Pranith Kumar.
3. Use bool type for variable holding rcu_is_watching() return
value, courtesy of Pranith Kumar.
4. Use bool constant for bool return in rcu_try_advance_all_cbs(),
courtesy of Pranith Kumar.
5. Use bool constant for bool return in rcu_lockdep_current_cpu_online(),
courtesy of Pranith Kumar.
6. Use bool constant for assignments to bool variable isidle,
courtesy of Pranith Kumar.
7. Shrink the kernel a bit by uninlining rcu_read_lock_held(),
courtesy of Oleg Nesterov.
8. Shrink the kernel a bit more by defining tracepoint strings only
if CONFIG_TRACING is set, courtesy of Ard Biesheuvel.
9. Fix outdated pathnames in comments, courtesy of Pranith Kumar.
10. Remove stale comment, courtesy of Pranith Kumar.
11. Break additional call_rcu() deadlock involving scheduler and perf.
12. Shrink the TINY_RCU side of the kernel by putting error checks
under #ifdef.
13. Eliminate unnecessary self-wakeups, courtesy of Pranith Kumar.
14. Replace flush_signals() with WARN_ON(signal_pending()).
15. Add ACCESS_ONCE() for RCU_INIT_POINTER().
Thanx, Paul
------------------------------------------------------------------------
b/include/linux/rcupdate.h | 40 ++-------------------------------------
b/include/trace/events/rcu.h | 3 ++
b/kernel/rcu/tiny.c | 8 +++----
b/kernel/rcu/tree.c | 39 +++++++++++++++++++++++---------------
b/kernel/rcu/tree.h | 9 ++++++--
b/kernel/rcu/tree_plugin.h | 44 +++++++++++++++++++++++++++----------------
b/kernel/rcu/update.c | 32 +++++++++++++++++++++++++++++++
7 files changed, 101 insertions(+), 74 deletions(-)
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