Messages in this thread | | | Date | Mon, 17 Feb 2014 13:26:25 -0800 | From | "Paul E. McKenney" <> | Subject | [PATCH tip/core/rcu 0/6] Documentation changes for 3.15 |
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Hello!
This series provides a variety of documentation updates:
1. Update the documentation on actions to take to avoid frenetic call_rcu() invocations from exhausting memory, including a mention of internal-to-RCU avoidance measures.
2. Add a note to Documentation/memory-barriers.txt stating that ACCESS_ONCE() provides cache coherence for accesses to any single given variable.
3. Add an explicit statement that in control dependencies, the condition must include the load in question.
4. Add WQ_SYSFS workqueues as a work-offloading option in Documentation/kernel-per-CPU-kthreads.txt.
5. It turns out that some types of control dependencies require memory barriers, most notably when the exact same store is at the beginning of both the then-clause and the else-clause. Document this.
6. Fixups to RTFP.txt
Thanx, Paul
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Documentation/memory-barriers.txt | 29 +++-- b/Documentation/RCU/RTFP.txt | 149 +++++++++++++++++++++++----- b/Documentation/RCU/checklist.txt | 19 ++- b/Documentation/kernel-per-CPU-kthreads.txt | 13 ++ b/Documentation/memory-barriers.txt | 17 +++ 5 files changed, 189 insertions(+), 38 deletions(-)
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