[patch 3/4] markers call_rcu usage: initialize rcu_head structures

[Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>]

[-- Attachment #1: marker-fix-rcu.patch --]
[-- Type: text/plain, Size: 901 bytes --]

Initialize rcu_head structures before passing them to call_rcu() to eliminate
false positives in DEBUG_RCU_HEAD.

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
CC: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
CC: mingo@elte.hu
CC: akpm@linux-foundation.org
---
 kernel/marker.c |    1 +
 1 file changed, 1 insertion(+)

Index: linux-2.6-lttng/kernel/marker.c
===================================================================
--- linux-2.6-lttng.orig/kernel/marker.c	2009-10-06 09:16:32.000000000 -0400
+++ linux-2.6-lttng/kernel/marker.c	2009-10-06 09:22:07.000000000 -0400
@@ -451,6 +451,7 @@ static struct marker_entry *add_marker(c
 	e->format_allocated = 0;
 	e->refcount = 0;
 	e->rcu_pending = 0;
+	INIT_RCU_HEAD(&e->rcu);
 	hlist_add_head(&e->hlist, head);
 	return e;
 }

-- 
Mathieu Desnoyers
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