From: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
To: linux-kernel@vger.kernel.org
Cc: mingo@elte.hu, laijs@cn.fujitsu.com, dipankar@in.ibm.com,
akpm@linux-foundation.org, mathieu.desnoyers@polymtl.ca,
josh@joshtriplett.org, dvhltc@us.ibm.com, niv@us.ibm.com,
tglx@linutronix.de, peterz@infradead.org, rostedt@goodmis.org,
Valdis.Kletnieks@vt.edu, dhowells@redhat.com,
eric.dumazet@gmail.com
Subject: [PATCH tip/core/rcu 0/7] Yet more RCU commits queued for 2.6.37
Date: Fri, 20 Aug 2010 11:45:21 -0700 [thread overview]
Message-ID: <20100820184521.GA24715@linux.vnet.ibm.com> (raw)
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(-)
next reply other threads:[~2010-08-20 18:45 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-08-20 18:45 Paul E. McKenney [this message]
2010-08-20 18:45 ` [PATCH tip/core/rcu 1/7] rcu: permit suppressing current grace period's CPU stall warnings Paul E. McKenney
2010-08-20 18:45 ` [PATCH tip/core/rcu 2/7] rcu: repair code-duplication FIXMEs Paul E. McKenney
2010-08-20 18:45 ` [PATCH tip/core/rcu 3/7] rcu: document ways of stalling updates in low-memory situations Paul E. McKenney
2010-08-20 18:45 ` [PATCH tip/core/rcu 4/7] rcu: Upgrade srcu_read_lock() docbook about SRCU grace periods Paul E. McKenney
2010-08-20 18:45 ` [PATCH tip/core/rcu 5/7] rcu: combine duplicate code, courtesy of CONFIG_PREEMPT_RCU Paul E. McKenney
2010-08-20 18:45 ` [PATCH tip/core/rcu 6/7] rcu: apply TINY_PREEMPT_RCU read-side speedup to TREE_PREEMPT_RCU Paul E. McKenney
2010-08-20 18:45 ` [PATCH tip/core/rcu 7/7] rcu: add comment stating that list_empty() applies to RCU-protected lists Paul E. McKenney
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