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-rw-r--r--kernel/rcupdate.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/kernel/rcupdate.c b/kernel/rcupdate.c
index 2559d4b8f23..c4d159a21e0 100644
--- a/kernel/rcupdate.c
+++ b/kernel/rcupdate.c
@@ -154,6 +154,15 @@ void fastcall call_rcu_bh(struct rcu_head *head,
}
/*
+ * Return the number of RCU batches processed thus far. Useful
+ * for debug and statistics.
+ */
+long rcu_batches_completed(void)
+{
+ return rcu_ctrlblk.completed;
+}
+
+/*
* Invoke the completed RCU callbacks. They are expected to be in
* a per-cpu list.
*/
@@ -501,6 +510,7 @@ void synchronize_kernel(void)
}
module_param(maxbatch, int, 0);
+EXPORT_SYMBOL_GPL(rcu_batches_completed);
EXPORT_SYMBOL(call_rcu); /* WARNING: GPL-only in April 2006. */
EXPORT_SYMBOL(call_rcu_bh); /* WARNING: GPL-only in April 2006. */
EXPORT_SYMBOL_GPL(synchronize_rcu);