[PATCH tip/core/rcu 0/23] v3 patches queued for 2.6.35
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From: Paul E. McKenney on 20 Apr 2010 17:50 Hello! RFC preview of RCU patches queued for 2.6.35, take 3, now ready for -tip inclusion. Take 2 is at http://lkml.org/lkml/2010/4/15/324. 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. 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. enable CPU_STALL_VERBOSE by default. It will have been in one release, so time to enable it. 12. disable CPU stall warnings upon panic 13. print boot-time console messages if RCU configs out of ordinary 14. improve RCU CPU stall-warning messages 15. permit discontiguous cpu_possible_mask CPU numbering 16. v2: reduce the number of spurious RCU_SOFTIRQ invocations [Original from Lai Jiangshan] 17. New: improve the RCU CPU-stall-warning documentation 18. New: debugobjects transition check 19. New: introduce rcu_head_init_on_stack 20. New: remove all non-on-stack rcu_head initializations 21. New: remove rcu_head initializers 22. New: Add debug RCU head objects Debug-objects-based rcu_head checking from Mathieu Desnoyers 23. New: make SRCU usable in modules [From Lai Jiangshan] Thanx, Paul b/Documentation/RCU/stallwarn.txt | 94 ++++++++++++---- b/Documentation/RCU/trace.txt | 35 +++--- b/arch/powerpc/mm/pgtable.c | 1 b/block/cfq-iosched.c | 1 b/block/genhd.c | 1 b/drivers/staging/batman-adv/hard-interface.c | 1 b/fs/file.c | 3 b/fs/fs-writeback.c | 31 ++++- b/fs/partitions/check.c | 1 b/include/linux/debugobjects.h | 11 + b/include/linux/init_task.h | 1 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/rcutorture.c | 2 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 b/lib/debugobjects.c | 59 +++++++++- b/mm/backing-dev.c | 1 b/mm/slob.c | 1 b/security/selinux/avc.c | 1 b/security/selinux/netnode.c | 2 include/linux/rcupdate.h | 75 ++++++++++--- include/linux/rcutiny.h | 17 ++ include/linux/rcutree.h | 4 include/linux/srcu.h | 2 kernel/rcupdate.c | 149 ++++++++++++++++++++++++++ kernel/rcutiny.c | 28 +++- kernel/rcutree.c | 127 +++++++++++++++------- kernel/rcutree.h | 1 kernel/rcutree_plugin.h | 55 ++++++++- lib/Kconfig.debug | 6 + 41 files changed, 669 insertions(+), 164 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ |