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Subject[GIT PULL rcu/next] rcu commits for 2.6.40
Hello, Ingo,

This pull request covers RCU chnages for 2.6.40. The major new features
are RCU priority boosting and the addition of kfree_rcu(), the latter
courtesy of Lai Jiangshan. These two features cover well over half
of the commits. There are a number of smaller features and bug fixes.
All have been sent to LKML in the following batches:

0. https://lkml.org/lkml/2011/2/22/660: RCU priority boosting preview
1. https://lkml.org/lkml/2011/5/1/19: RCU priority boosting, kfree_rcu()
2. https://lkml.org/lkml/2011/5/2/40: More uses of kfree_rcu()
3. https://lkml.org/lkml/2011/5/8/60: miscellaneous

The kfree_rcu() uses in the pull request have Acked-by:s from the
maintainers. I have some additional kfree_rcu() requests that lack
Acked-by:s, and I will deal with these later.

These channges are available in the -rcu git repository at:

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

------------------>
Eric Dumazet (1):
rcu: optimize rcutiny

Gleb Natapov (1):
rcu: provide rcu_virt_note_context_switch() function.

Lai Jiangshan (40):
rcu: call __rcu_read_unlock() in exit_rcu for tree RCU
rcu: introduce kfree_rcu()
cgroup,rcu: convert call_rcu(free_css_set_rcu) to kfree_rcu()
cgroup,rcu: convert call_rcu(free_cgroup_rcu) to kfree_rcu()
cgroup,rcu: convert call_rcu(__free_css_id_cb) to kfree_rcu()
net,rcu: convert call_rcu(tcf_common_free_rcu) to kfree_rcu()
net,rcu: convert call_rcu(tcf_police_free_rcu) to kfree_rcu()
net,rcu: convert call_rcu(in6_dev_finish_destroy_rcu) to kfree_rcu()
net,rcu: convert call_rcu(inet6_ifa_finish_destroy_rcu) to kfree_rcu()
net,rcu: convert call_rcu(listeners_free_rcu) to kfree_rcu()
net,rcu: convert call_rcu(sctp_local_addr_free) to kfree_rcu()
net,rcu: convert call_rcu(ha_rcu_free) to kfree_rcu()
net,rcu: convert call_rcu(dn_dev_free_ifa_rcu) to kfree_rcu()
net,act_police,rcu: remove rcu_barrier()
security,rcu: convert call_rcu(user_update_rcu_disposal) to kfree_rcu()
net,rcu: convert call_rcu(fc_rport_free_rcu) to kfree_rcu()
net,rcu: convert call_rcu(__leaf_info_free_rcu) to kfree_rcu()
net,rcu: convert call_rcu(__gen_kill_estimator) to kfree_rcu()
net,rcu: convert call_rcu(ip_mc_list_reclaim) to kfree_rcu()
net,rcu: convert call_rcu(ip_sf_socklist_reclaim) to kfree_rcu()
net,rcu: convert call_rcu(ip_mc_socklist_reclaim) to kfree_rcu()
net,rcu: convert call_rcu(free_dm_hw_stat) to kfree_rcu()
ixgbe,rcu: convert call_rcu(ring_free_rcu) to kfree_rcu()
macvlan,rcu: convert call_rcu(macvlan_port_rcu_free) to kfree_rcu()
net,rcu: convert call_rcu(ipv6_mc_socklist_reclaim) to kfree_rcu()
net,rcu: convert call_rcu(rps_map_release) to kfree_rcu()
net,rcu: convert call_rcu(xps_map_release) to kfree_rcu()
net,rcu: convert call_rcu(xps_dev_maps_release) to kfree_rcu()
security,rcu: convert call_rcu(sel_netif_free) to kfree_rcu()
net,rcu: convert call_rcu(netlbl_unlhsh_free_addr4) to kfree_rcu()
net,rcu: convert call_rcu(netlbl_unlhsh_free_addr6) to kfree_rcu()
net,rcu: convert call_rcu(net_generic_release) to kfree_rcu()
net,rcu: convert call_rcu(__nf_ct_ext_free_rcu) to kfree_rcu()
perf,rcu: convert call_rcu(free_ctx) to kfree_rcu()
perf,rcu: convert call_rcu(swevent_hlist_release_rcu) to kfree_rcu()
net,rcu: convert call_rcu(phonet_device_rcu_free) to kfree_rcu()
net,rcu: convert call_rcu(wq_free_rcu) to kfree_rcu()
net/mac80211,rcu: convert call_rcu(work_free_rcu) to kfree_rcu()
net,rcu: convert call_rcu(xt_osf_finger_free_rcu) to kfree_rcu()
net,rcu: convert call_rcu(kfree_tid_tx) to kfree_rcu()

Mathieu Desnoyers (1):
rcu: Enable DEBUG_OBJECTS_RCU_HEAD from !PREEMPT

Paul E. McKenney (34):
rcu: Remove conditional compilation for RCU CPU stall warnings
rcu: Decrease memory-barrier usage based on semi-formal proof
rcu: merge TREE_PREEPT_RCU blocked_tasks[] lists
rcu: move TREE_RCU from softirq to kthread
rcu: priority boosting for TREE_PREEMPT_RCU
rcu: Force per-rcu_node kthreads off of the outgoing CPU
rcu: put per-CPU kthread at non-RT priority during CPU hotplug operations
rcu: avoid hammering sched with yet another bound RT kthread
rcu: eliminate unused boosting statistics
rcu: Add boosting to TREE_PREEMPT_RCU tracing
rcu: Update RCU's trace.txt documentation for new format
rcu: add callback-queue information to rcudata output
rcu: add tracing for RCU's kthread run states.
rcu: make rcutorture version numbers available through debugfs
rcu: update tracing documentation for new rcutorture and rcuboost
rcu: fix tracing bug thinko on boost-balk attribution
rcu: add grace-period age and more kthread state to tracing
rcu: Add forward-progress diagnostic for per-CPU kthreads
rcu: add DEBUG_OBJECTS_RCU_HEAD check for alignment
rcu: mark rcutorture boosting callback as being on-stack
rcu: Use WARN_ON_ONCE for DEBUG_OBJECTS_RCU_HEAD warnings
rcu: Switch to this_cpu() primitives
rcu: code cleanups in TINY_RCU priority boosting.
rcu: remove useless ->boosted_this_gp field
rcu: Converge TINY_RCU expedited and normal boosting
rcu: fix spelling
rcu: further lower priority in rcu_yield()
rcu: prevent call_rcu() from diving into rcu core if irqs disabled
rcu: get rid of signed overflow in check_cpu_stall()
rcu: permit rcu_read_unlock() to be called while holding runqueue locks
batman,rcu: convert call_rcu(gw_node_free_rcu) to kfree_rcu
batman,rcu: convert call_rcu(neigh_node_free_rcu) to kfree()
batman,rcu: convert call_rcu(softif_neigh_free_rcu) to kfree_rcu
net,rcu: convert call_rcu(prl_entry_destroy_rcu) to kfree

Documentation/RCU/00-INDEX | 2 +-
Documentation/RCU/stallwarn.txt | 23 +-
Documentation/RCU/trace.txt | 295 +++++++++++++----
Documentation/filesystems/proc.txt | 1 -
drivers/net/ixgbe/ixgbe_main.c | 7 +-
drivers/net/macvlan.c | 10 +-
include/linux/interrupt.h | 1 -
include/linux/rcupdate.h | 70 ++++-
include/linux/rcutiny.h | 8 +
include/linux/rcutree.h | 13 +
include/net/sctp/sctp.h | 1 -
include/trace/events/irq.h | 3 +-
init/Kconfig | 2 +-
kernel/cgroup.c | 27 +--
kernel/perf_event.c | 20 +-
kernel/rcupdate.c | 32 ++-
kernel/rcutiny.c | 45 ++--
kernel/rcutiny_plugin.h | 203 +++++------
kernel/rcutorture.c | 26 +-
kernel/rcutree.c | 656 ++++++++++++++++++++++++++++-------
kernel/rcutree.h | 113 +++++--
kernel/rcutree_plugin.h | 575 ++++++++++++++++++++++++-------
kernel/rcutree_trace.c | 192 +++++++++--
kernel/softirq.c | 2 +-
lib/Kconfig.debug | 32 +--
net/batman-adv/gateway_client.c | 10 +-
net/batman-adv/originator.c | 10 +-
net/batman-adv/soft-interface.c | 10 +-
net/core/dev_addr_lists.c | 12 +-
net/core/drop_monitor.c | 12 +-
net/core/gen_estimator.c | 9 +-
net/core/net-sysfs.c | 34 +--
net/core/net_namespace.c | 10 +-
net/decnet/dn_dev.c | 7 +-
net/ipv4/fib_semantics.c | 12 +-
net/ipv4/fib_trie.c | 7 +-
net/ipv4/igmp.c | 32 +--
net/ipv6/addrconf.c | 16 +-
net/ipv6/mcast.c | 8 +-
net/ipv6/sit.c | 7 +-
net/mac80211/agg-tx.c | 14 +-
net/mac80211/work.c | 10 +-
net/netfilter/nf_conntrack_extend.c | 8 +-
net/netfilter/xt_osf.c | 11 +-
net/netlabel/netlabel_unlabeled.c | 42 +---
net/netlink/af_netlink.c | 8 +-
net/phonet/pn_dev.c | 10 +-
net/sched/act_api.c | 7 +-
net/sched/act_police.c | 8 +-
net/sctp/bind_addr.c | 2 +-
net/sctp/ipv6.c | 2 +-
net/sctp/protocol.c | 9 +-
net/socket.c | 11 +-
security/keys/user_defined.c | 16 +-
security/selinux/netif.c | 18 +-
tools/perf/util/trace-event-parse.c | 1 -
56 files changed, 1797 insertions(+), 935 deletions(-)


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