Messages in this thread | | | Date | Thu, 15 Apr 2010 11:12:55 -0700 | From | "Paul E. McKenney" <> | Subject | [PATCH tip/core/rcu 0/16] rcu: v2 patches queued for 2.6.35 |
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Hello!
RFC preview of RCU patches queued for 2.6.35, take 2. Take 1 is at http://lkml.org/lkml/2010/4/5/134. Changes to old patches noted in "[]", new patches flagged with "New".
1. substitute set_need_resched for sending resched IPIs This reduces OS jitter.
2. make dead code really dead. [Updated commit message as suggested by Mathieu Desnoyers.] 3. move some code from macro to function Cleanups from Lai Jiangshan.
4. ignore offline CPUs in last non dyntick idle CPU check Fix to my CONFIG_RCU_FAST_NO_HZ code to handle offline and non-existent CPUs, also from Lai Jiangshan.
5. fix bogus CONFIG_PROVE_LOCKING in comments to reality 6. fix now bogus rcu_scheduler_active comments Comment fixups.
7. shrink rcutiny by making synchronize_rcu_bh be inline Shrink TINY_RCU some more.
8. rename rcutiny rcu_ctrlblk to rcu_sched_ctrlblk First step towards TINY_PREEMPTIBLE_RCU.
9. refactor RCU's context switch handling Reduce the number of needless softirqs.
10. slim down rcutiny by removing rcu_scheduler_active and friends More shrinkage for TINY_RCU
11. New: enable CPU_STALL_VERBOSE by default. It will have been in one release, so time to enable it.
12. New: disable CPU stall warnings upon panic
13. New: print boot-time console messages if RCU configs out of ordinary
14. New: improve RCU CPU stall-warning messages
15. New: permit discontiguous cpu_possible_mask CPU numbering
16. New: v2: reduce the number of spurious RCU_SOFTIRQ invocations
Thanx, Paul
b/Documentation/RCU/trace.txt | 35 ++++++------ b/include/linux/rcupdate.h | 15 ++--- b/include/linux/rcutiny.h | 12 +++- b/include/linux/rcutree.h | 2 b/include/linux/srcu.h | 4 - b/kernel/rcupdate.c | 19 ------ b/kernel/rcutiny.c | 9 --- b/kernel/rcutiny_plugin.h | 39 +++++++++++++ b/kernel/rcutree.c | 10 +++ b/kernel/rcutree.h | 1 b/kernel/rcutree_plugin.h | 2 b/kernel/rcutree_trace.c | 4 + b/kernel/sched.c | 2 b/kernel/softirq.c | 2 b/lib/Kconfig.debug | 2 include/linux/rcupdate.h | 12 +--- include/linux/rcutiny.h | 17 +++++ include/linux/rcutree.h | 4 + kernel/rcutiny.c | 20 ++++-- kernel/rcutree.c | 121 +++++++++++++++++++++++++++++------------- kernel/rcutree.h | 1 kernel/rcutree_plugin.h | 55 +++++++++++++++++-- 22 files changed, 275 insertions(+), 113 deletions(-)
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