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Yet more RCU commits queued for 2.6.37

Paul E. McKenney lkml 1 version New

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b4 am [email protected]

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  1. v1 Latest7 patches 0 repliesNew

Patches in v1 No applies recorded yet

#Subject and filesSizeRepliesApplied
1/7rcu: permit suppressing current grace period's CPU stall warningsinclude/linux/rcutiny.h include/linux/rcutree.h kernel/rcutree.c +2 more+44 -00 replies
2/7rcu: repair code-duplication FIXMEsinclude/linux/rcupdate.h include/linux/rcutiny.h include/linux/rcutree.h +2 more+15 -200 replies
3/7rcu: document ways of stalling updates in low-memory situationsDocumentation/RCU/checklist.txt+16 -70 replies
4/7rcu: Upgrade srcu_read_lock() docbook about SRCU grace periodsinclude/linux/srcu.h+6 -10 replies
5/7rcu: combine duplicate code, courtesy of CONFIG_PREEMPT_RCUinclude/linux/rcupdate.h include/linux/rcutiny.h include/linux/rcutree.h +1 more+72 -1130 replies
6/7rcu: apply TINY_PREEMPT_RCU read-side speedup to TREE_PREEMPT_RCUkernel/rcutree_plugin.h+4 -20 replies
7/7rcu: add comment stating that list_empty() applies to RCU-protected listsinclude/linux/rculist.h+9 -00 replies

Reviews trailers per patch

None of the 7 patches has a Reviewed-by or Acked-by.

PatchJason WesselMathieu DesnoyersAndrew Morton
1/7T-b
2/7
3/7
4/7
5/7
6/7Located-by
7/7Requested-by

Trailers given in replies are filled; those carried in the patches from earlier versions are outlined with dashes. Scroll the table sideways for all 3 reviewers.

Read the v1 thread

Cover letter [PATCH tip/core/rcu 0/7] Yet more RCU commits queued for 2.6.37

Hello!

This patchset shows additional patches queued for 2.6.37, over and above those posted at http://lkml.org/lkml/2010/7/14/334 and at http://lkml.org/lkml/2010/8/9/332. These are all trivial fixes. The patches are as follows:

1. Allow kernel debuggers to avoid spurious RCU CPU stall warnings
when restarting from a breakpoint via a new rcu_cpu_stall_reset().
2. Repair code-duplication FIXMEs. This code was temporarily
duplicated to avoid inter-patch dependencies in the RCU tree.
3. Document some additional ways of stalling updates to prevent
call_rcu()-induced OOM situations.
4. Update srcu_read_lock() docbook comment to note that it is
illegal to wait for a given flavor of SRCU grace period while in that same flavor of SRCU read-side critical section.
5. Combine duplicate code, courtesy of a newly refurbished
CONFIG_PREEMPT_RCU symbol. Also convert from macro to static inline function in a couple of places.
6. Apply the TINY_PREEMPT_RCU read-side speedups/fixes to

	TREE_PREEMPT_RCU.  This update to TINY_PREEMPT_RCU update was
	posted at http://lkml.org/lkml/2010/8/17/437.

7. Add a comment stating that list_empty() serves the function of
the non-existent list_empty_rcu().

For a testing-only version of this patchset from git, please see:

git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-2.6-rcu.git rcu/testing

Thanx, Paul

 b/Documentation/RCU/checklist.txt |   23 ++++++++---
 b/include/linux/rculist.h         |    9 ++++
 b/include/linux/rcupdate.h        |   15 +++++++
 b/include/linux/rcutiny.h         |    4 ++
 b/include/linux/rcutree.h         |    1 
 b/include/linux/srcu.h            |    7 +++
 b/kernel/rcutiny_plugin.h         |    4 --
 b/kernel/rcutree.c                |   20 ++++++++++
 b/kernel/rcutree.h                |    1 
 b/kernel/rcutree_plugin.h         |   18 +++++++++
 include/linux/rcupdate.h          |   75 ++++++++++++++++++++++++++++++++++++--
 include/linux/rcutiny.h           |   58 -----------------------------
 include/linux/rcutree.h           |   56 ----------------------------
 kernel/rcutree.h                  |    3 -
 kernel/rcutree_plugin.h           |   15 ++-----
 15 files changed, 166 insertions(+), 143 deletions(-)