Hello! This series updates kfree_rcu() testing and OOM handling. It also provides a rcu_gp_might_be_stalled() function that judges whether or not RCU is being stalled. 1. Add ability to increase object allocation size, courtesy of Joel Fernandes. 2. rcu/tree: Add a shrinker to prevent OOM due to kfree_rcu() batching, courtesy of Joel Fernandes. 3. rcu/tree: Count number of batched kfree_rcu() locklessly, courtesy of Joel Fernandes. 4. Add rcu_gp_might_be_stalled() to indicate whether or not there is currently a good chance that the current RCU grace period is being stalled. Thanx, Paul ------------------------------------------------------------------------ include/linux/rcutiny.h | 1 include/linux/rcutree.h | 1 kernel/rcu/rcuperf.c | 5 ++- kernel/rcu/tree.c | 70 +++++++++++++++++++++++++++++++++++++++++++----- kernel/rcu/tree_stall.h | 40 ++++++++++++++++++++++++--- 5 files changed, 106 insertions(+), 11 deletions(-)
