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rcu: Export RCU-tasks APIs to GPL modules 

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@goodmis.org>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
This commit is contained in:
Steven Rostedt 2014-07-02 18:17:19 -07:00 committed by Paul E. McKenney
parent 3f95aa81d2
commit 06c2a9238f
1 changed files with 2 additions and 0 deletions
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2
kernel/rcu/update.c
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@ -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)