Hello, Ingo,
This series includes the following:
1. Export a pair of debug-object interfaces for RCU that will
allow the slab allocators to avoid a recursion bug located
by Sasha Levin. Strictly speaking, this is not a regression,
but it would be good to enable the fix.
2. Address a serious performance regression on an open/close
micro-benchmark located by Dave Hansen. The offending commit
is ac1bea85781e (Make cond_resched() report RCU quiescent states).
Both have been exposed to -next testing, and are available in the git
repository at:
git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git
urgent.2014.06.23a
for you to fetch changes up to 4a81e8328d3791a4f99bf5b436d050f6dc5ffea3:
rcu: Reduce overhead of cond_resched() checks for RCU (2014-06-23 11:19:32
-0700)
----------------------------------------------------------------
Paul E. McKenney (2):
rcu: Export debug_init_rcu_head() and and debug_init_rcu_head()
rcu: Reduce overhead of cond_resched() checks for RCU
Documentation/kernel-parameters.txt | 6 ++
include/linux/rcupdate.h | 46 +++---------
kernel/rcu/tree.c | 140 ++++++++++++++++++++++++++++--------
kernel/rcu/tree.h | 6 +-
kernel/rcu/tree_plugin.h | 2 +-
kernel/rcu/update.c | 22 +-----
kernel/sched/core.c | 7 +-
7 files changed, 137 insertions(+), 92 deletions(-)
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