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authorPaul E. McKenney <paulmck@linux.vnet.ibm.com>2009-10-06 21:48:18 -0700
committerIngo Molnar <mingo@elte.hu>2009-10-07 08:11:21 +0200
commit978c0b88146a7f9b364b71b5b83c5b12e7b413d7 (patch)
treeb68bedc40888192d329841a786f3b1214eab91ef /include/linux/futex.h
parente74f4c4564455c91a3b4075bb1721993c2a95dda (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