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    Subject[PATCH tip/core/rcu 0/16] rcu: v2 patches queued for 2.6.35
    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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