diff options
author | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2009-10-06 21:48:18 -0700 |
---|---|---|
committer | Ingo Molnar <mingo@elte.hu> | 2009-10-07 08:11:21 +0200 |
commit | 978c0b88146a7f9b364b71b5b83c5b12e7b413d7 (patch) | |
tree | b68bedc40888192d329841a786f3b1214eab91ef /include/linux/futex.h | |
parent | e74f4c4564455c91a3b4075bb1721993c2a95dda (diff) |
rcu: Place root rcu_node structure in separate lockdep class
Before this patch, all of the rcu_node structures were in the same lockdep
class, so that lockdep would complain when rcu_preempt_offline_tasks()
acquired the root rcu_node structure's lock while holding one of the leaf
rcu_nodes' locks.
This patch changes rcu_init_one() to use a separate
spin_lock_init() for the root rcu_node structure's lock than is
used for that of all of the rest of the rcu_node structures, which
puts the root rcu_node structure's lock in its own lockdep class.
Suggested-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: laijs@cn.fujitsu.com
Cc: dipankar@in.ibm.com
Cc: akpm@linux-foundation.org
Cc: mathieu.desnoyers@polymtl.ca
Cc: josh@joshtriplett.org
Cc: dvhltc@us.ibm.com
Cc: niv@us.ibm.com
Cc: rostedt@goodmis.org
Cc: Valdis.Kletnieks@vt.edu
Cc: dhowells@redhat.com
LKML-Reference: <12548908983277-git-send-email->
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/linux/futex.h')
0 files changed, 0 insertions, 0 deletions