Fixes for 3.8
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- v1 Latest6 patches 0 repliesNew
Patches in v1 No applies recorded yet
| # | Subject and files | Size | Replies | Applied |
|---|---|---|---|---|
| 1/6 | rcu: Accelerate callbacks for CPU initiating a grace periodkernel/ | +24 | 0 replies | |
| 2/6 | rcu: Fix batch-limit size problemkernel/ | +8 | 0 replies | |
| 3/6 | rcu: Remove list_for_each_continue_rcu()Documentation/ Documentation/ include/ | +9 | 0 replies | |
| 4/6 | rcu: Add new rcutorture module parameters to start/end test messageskernel/ | +4 | 0 replies | |
| 5/6 | rcu: Clarify memory-ordering properties of grace-period primitivesinclude/ kernel/ kernel/ | +44 | 0 replies | |
| 6/6 | rcu: Reduce default RCU CPU stall warning timeoutlib/ | +1 | 0 replies |
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Cover letter [PATCH tip/core/rcu 0/6] Fixes for 3.8
Hello!
This patch contains fixes as follows:
1. Reinstate a grace-period acceleration that permits invoking
the first callback registered on an idle system in one grace period rather than two. The previous version of this acceleration was invalidated by the new grace-period kthreads.
2. Fix an integer-size mismatch that prevented RCU from shifting
to bulk-callback-invocation mode under overload. (Courtesy of Eric Dumazet.)
3. Remove list_for_each_continue_rcu(), as it is no longer used.
4. Update rcutorture's module-parameter printout to include new
parameters.
5. Document the memory-ordering properties of RCU's grace-period
primitives. Note that the SRCU rewrite weakened these properties slightly.
6. Reduce the RCU CPU stall warning timeout to 21 seconds so that
it is once again somewhat shorter than the soft-lockup timeout.
Thanx, Paul
b/Documentation/RCU/checklist.txt | 17 +++++------ b/Documentation/RCU/whatisRCU.txt | 4 -- b/include/linux/rculist.h | 17 ----------- b/include/linux/rcupdate.h | 20 +++++++++++++ b/kernel/rcutorture.c | 4 ++ b/kernel/rcutree.c | 57 ++++++++++++++++++++++++++++++++------ b/kernel/rcutree_plugin.h | 8 +++++ b/lib/Kconfig.debug | 2 - 8 files changed, 90 insertions(+), 39 deletions(-)