[PATCH RFC 10/16] rcutorture: Test call_prcu() and prcu_barrier()

[lianglihao]

From: Lihao Liang <liangli...@huawei.com>

Signed-off-by: Lihao Liang <liangli...@huawei.com>
---
 kernel/rcu/prcu.c       | 4 +++-
 kernel/rcu/rcutorture.c | 4 ++--
 2 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/kernel/rcu/prcu.c b/kernel/rcu/prcu.c
index 2664d091..49cb70e6 100644
--- a/kernel/rcu/prcu.c
+++ b/kernel/rcu/prcu.c
@@ -179,8 +179,10 @@ void call_prcu(struct rcu_head *head, rcu_callback_t func)
 
        /* Use GFP_ATOMIC with IRQs disabled */
        vhp = kmalloc(sizeof(struct prcu_version_head), GFP_ATOMIC);
-       if (!vhp)
+       if (!vhp) {
+               WARN_ON(1);
                return;
+       }
 
        head->func = func;
        head->next = NULL;
diff --git a/kernel/rcu/rcutorture.c b/kernel/rcu/rcutorture.c
index 7d65bf0c..9215ebb0 100644
--- a/kernel/rcu/rcutorture.c
+++ b/kernel/rcu/rcutorture.c
@@ -797,8 +797,8 @@ static struct rcu_torture_ops prcu_ops = {
        .exp_sync       = synchronize_prcu,
        .get_state      = NULL,
        .cond_sync      = NULL,
-       .call           = NULL,
-       .cb_barrier     = NULL,
+       .call           = call_prcu,
+       .cb_barrier     = prcu_barrier,
        .fqs            = NULL,
        .stats          = NULL,
        .irq_capable    = 1,
-- 
2.14.1.729.g59c0ea183