1f889ec62c
Pull RCU updates from Ingo Molnar:
"The main changes in this cycle are mostly related to preparatory work
for the full-dynticks work:
- Remove restrictions on no-CBs CPUs, make RCU_FAST_NO_HZ take
advantage of numbered callbacks, do callback accelerations based on
numbered callbacks. Posted to LKML at
https://lkml.org/lkml/2013/3/18/960
- RCU documentation updates. Posted to LKML at
https://lkml.org/lkml/2013/3/18/570
- Miscellaneous fixes. Posted to LKML at
https://lkml.org/lkml/2013/3/18/594"
* 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (24 commits)
rcu: Make rcu_accelerate_cbs() note need for future grace periods
rcu: Abstract rcu_start_future_gp() from rcu_nocb_wait_gp()
rcu: Rename n_nocb_gp_requests to need_future_gp
rcu: Push lock release to rcu_start_gp()'s callers
rcu: Repurpose no-CBs event tracing to future-GP events
rcu: Rearrange locking in rcu_start_gp()
rcu: Make RCU_FAST_NO_HZ take advantage of numbered callbacks
rcu: Accelerate RCU callbacks at grace-period end
rcu: Export RCU_FAST_NO_HZ parameters to sysfs
rcu: Distinguish "rcuo" kthreads by RCU flavor
rcu: Add event tracing for no-CBs CPUs' grace periods
rcu: Add event tracing for no-CBs CPUs' callback registration
rcu: Introduce proper blocking to no-CBs kthreads GP waits
rcu: Provide compile-time control for no-CBs CPUs
rcu: Tone down debugging during boot-up and shutdown.
rcu: Add softirq-stall indications to stall-warning messages
rcu: Documentation update
rcu: Make bugginess of code sample more evident
rcu: Fix hlist_bl_set_first_rcu() annotation
rcu: Delete unused rcu_node "wakemask" field
...
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