Messages in this thread | | | Date | Sat, 3 Dec 2011 10:34:17 -0800 | From | "Paul E. McKenney" <> | Subject | [PATCH tip/core/rcu 0/7] Preview of fourth set of RCU changes for 3.3 |
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Hello!
This patchset adds to the earlier sets:
https://lkml.org/lkml/2011/11/2/363 https://lkml.org/lkml/2011/11/15/302 https://lkml.org/lkml/2011/11/28/588
This fourth set adds more infrastructure for Frederic's user-mode nohz work, additional improvements to RCU_FAST_NO_HZ, and a few bug fixes. The patches are as follows:
1,2. More support for user-mode nohz (courtesy of Frederic Weisbecker). 3. Ignore RCU callback batch limits if the CPU is otherwise idle. This allows a CPU to more quickly clear a backlog of callbacks, and thus more quickly enter dyntick-idle mode. 4. Adaptive dyntick-entry approach that more efficiently handles the various possible grace-period begin/end scenarios. 5. Remove a redundant variable declaration. 6. Allow rcutorture to avoid attempting to offline unhotpluggable CPUs. 7. Fix RCU-lockdep splats involving RCU read-side critical sections that partially overlap irq-disable code sections (courtesy of Yong Zhang).
For a testing-only version of this patchset from git, please see the following subject-to-rebase branch, based on 3.2-rc3:
git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git rcu/dev
Thanx, Paul
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b/drivers/base/cpu.c | 12 ++++++++ b/include/linux/cpu.h | 1 b/kernel/rcutorture.c | 4 +- b/kernel/rcutree.c | 18 +++++-------- b/kernel/rcutree.h | 1 b/kernel/rcutree_plugin.h | 14 ++++++++++ kernel/rcutree.c | 12 ++++---- kernel/rcutree_plugin.h | 62 ++++++++++++++++++++++++++++++++++++---------- 8 files changed, 92 insertions(+), 32 deletions(-)
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