linux-kernel - [PATCH tip/core/rcu] rcu: export rcu_scheduler

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Message-ID: <20100226030230.GA7743@linux.vnet.ibm.com>
Date:	Thu, 25 Feb 2010 19:02:30 -0800
From:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
To:	linux-kernel@...r.kernel.org
Cc:	mingo@...e.hu, laijs@...fujitsu.com, dipankar@...ibm.com,
	akpm@...ux-foundation.org, mathieu.desnoyers@...ymtl.ca,
	josh@...htriplett.org, dvhltc@...ibm.com, niv@...ibm.com,
	tglx@...utronix.de, peterz@...radead.org, rostedt@...dmis.org,
	Valdis.Kletnieks@...edu, dhowells@...hat.com
Subject: [PATCH tip/core/rcu] rcu: export rcu_scheduler_active

Kernel modules using rcu_read_lock_sched_held() must now have access
to rcu_scheduler_active, so it must be exported.

This should fix the fix for the boot-time RCU-lockdep splat.

Signed-off-by: Paul E. McKenney <paulmck@...ux.vnet.ibm.com>
---

 rcupdate.c |    1 +
 1 file changed, 1 insertion(+)

diff --git a/kernel/rcupdate.c b/kernel/rcupdate.c
index 7bfa004..f1125c1 100644
--- a/kernel/rcupdate.c
+++ b/kernel/rcupdate.c
@@ -64,6 +64,7 @@ EXPORT_SYMBOL_GPL(rcu_sched_lock_map);
 #endif
 
 int rcu_scheduler_active __read_mostly;
+EXPORT_SYMBOL_GPL(rcu_scheduler_active);
 
 /*
  * This function is invoked towards the end of the scheduler's initialization
--
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