Messages in this thread | | | Date | Mon, 14 Nov 2016 08:56:48 -0800 | From | "Paul E. McKenney" <> | Subject | [PATCH tip/core/rcu 0/7] Miscellaneous fixes for 4.10 |
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Hello!
This series contains miscellaneous fixes to RCU:
1. Tighten up __call_rcu's alignment check for the rcu_head structure now that no arch does two-byte alignment of pointers.
2. Remove obsolete comment about when rcu_check_callbacks() was invoked.
3. Remove obsolete comment about which function opportunistically notes grace periods beginnings and endings.
4. Update the RCU_TRACE Kconfig option's help text to note that it enables event tracing in addition to debugfs, courtesy of Nikolay Borisov.
5. Add event tracing for long read-side delays in rcutorture in order to better debug too-short grace periods.
6. Make expedited grace periods recheck dyntick-idle state to avoid sending needless IPIs.
7. Don't kick CPUs unless there is grace-period activity currently in progress.
Thanx, Paul
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include/trace/events/rcu.h | 5 ++++- kernel/rcu/rcutorture.c | 11 ++++++++++- kernel/rcu/tree.c | 17 ++++++----------- kernel/rcu/tree.h | 1 + kernel/rcu/tree_exp.h | 12 +++++++++++- lib/Kconfig.debug | 3 ++- 6 files changed, 34 insertions(+), 15 deletions(-)
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