linux-kernel - [PATCH v7 tip/core/rcu 05/17] rcu: Export RCU-tasks APIs to GPL modules

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Date:	Thu, 28 Aug 2014 12:19:56 -0700
From:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
To:	linux-kernel@...r.kernel.org
Cc:	mingo@...nel.org, laijs@...fujitsu.com, dipankar@...ibm.com,
	akpm@...ux-foundation.org, mathieu.desnoyers@...icios.com,
	josh@...htriplett.org, tglx@...utronix.de, peterz@...radead.org,
	rostedt@...dmis.org, dhowells@...hat.com, edumazet@...gle.com,
	dvhart@...ux.intel.com, fweisbec@...il.com, oleg@...hat.com,
	bobby.prani@...il.com,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
Subject: [PATCH v7 tip/core/rcu 05/17] rcu: Export RCU-tasks APIs to GPL modules

From: Steven Rostedt <rostedt@...dmis.org>

This commit exports the RCU-tasks synchronous APIs,
synchronize_rcu_tasks() and rcu_barrier_tasks(), to
GPL-licensed kernel modules.

Signed-off-by: Steven Rostedt <rostedt@...dmis.org>
Signed-off-by: Paul E. McKenney <paulmck@...ux.vnet.ibm.com>
Reviewed-by: Josh Triplett <josh@...htriplett.org>
---
 kernel/rcu/update.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/kernel/rcu/update.c b/kernel/rcu/update.c
index 403fc4ae539e..aef8109152ce 100644
--- a/kernel/rcu/update.c
+++ b/kernel/rcu/update.c
@@ -430,6 +430,7 @@ void synchronize_rcu_tasks(void)
 	/* Wait for the grace period. */
 	wait_rcu_gp(call_rcu_tasks);
 }
+EXPORT_SYMBOL_GPL(synchronize_rcu_tasks);
 
 /**
  * rcu_barrier_tasks - Wait for in-flight call_rcu_tasks() callbacks.
@@ -442,6 +443,7 @@ void rcu_barrier_tasks(void)
 	/* There is only one callback queue, so this is easy.  ;-) */
 	synchronize_rcu_tasks();
 }
+EXPORT_SYMBOL_GPL(rcu_barrier_tasks);
 
 /* See if the current task has stopped holding out, remove from list if so. */
 static void check_holdout_task(struct task_struct *t)
-- 
1.8.1.5

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