rcu: Test srcu_barrier() from rcutorture test suite

SRCU now has a call_srcu() and an srcu_barrier(), but rcutorture does not
test them.  This commit adds the machinery to allow rcutorture's existing
tests for call_rcu() and rcu_barrier() to apply to the SRCU equivalents.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>

1 files changed, 13 insertions, 2 deletions

diff --git a/kernel/rcutorture.c b/kernel/rcutorture.c
index 9850479f319d..7b6935e0cee3 100644
--- a/kernel/rcutorture.c
+++ b/kernel/rcutorture.c
@@ -635,6 +635,17 @@ static void srcu_torture_synchronize(void)
         synchronize_srcu(&srcu_ctl);
 }
 
+static void srcu_torture_call(struct rcu_head *head,
+                              void (*func)(struct rcu_head *head))
+{
+        call_srcu(&srcu_ctl, head, func);
+}
+
+static void srcu_torture_barrier(void)
+{
+        srcu_barrier(&srcu_ctl);
+}
+
 static int srcu_torture_stats(char *page)
 {
         int cnt = 0;
@@ -661,8 +672,8 @@ static struct rcu_torture_ops srcu_ops = {
         .completed      = srcu_torture_completed,
         .deferred_free  = srcu_torture_deferred_free,
         .sync           = srcu_torture_synchronize,
-        .call           = NULL,
-        .cb_barrier     = NULL,
+        .call           = srcu_torture_call,
+        .cb_barrier     = srcu_torture_barrier,
         .stats          = srcu_torture_stats,
         .name           = "srcu"
 };