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    Subject[PATCH v3 tip/core/rcu 07/34] rcutorture: Add a test for synchronize_rcu_mult()
    Date
    From: "Paul E. McKenney" <paulmck@kernel.org>

    This commit adds a crude test for synchronize_rcu_mult(). This is
    currently a smoke test rather than a high-quality stress test.

    Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
    ---
    kernel/rcu/rcutorture.c | 9 +++++++--
    1 file changed, 7 insertions(+), 2 deletions(-)

    diff --git a/kernel/rcu/rcutorture.c b/kernel/rcu/rcutorture.c
    index ada5b91..88631f5 100644
    --- a/kernel/rcu/rcutorture.c
    +++ b/kernel/rcu/rcutorture.c
    @@ -20,7 +20,7 @@
    #include <linux/err.h>
    #include <linux/spinlock.h>
    #include <linux/smp.h>
    -#include <linux/rcupdate.h>
    +#include <linux/rcupdate_wait.h>
    #include <linux/interrupt.h>
    #include <linux/sched/signal.h>
    #include <uapi/linux/sched/types.h>
    @@ -666,6 +666,11 @@ static void rcu_tasks_torture_deferred_free(struct rcu_torture *p)
    call_rcu_tasks(&p->rtort_rcu, rcu_torture_cb);
    }

    +static void synchronize_rcu_mult_test(void)
    +{
    + synchronize_rcu_mult(call_rcu_tasks, call_rcu);
    +}
    +
    static struct rcu_torture_ops tasks_ops = {
    .ttype = RCU_TASKS_FLAVOR,
    .init = rcu_sync_torture_init,
    @@ -675,7 +680,7 @@ static struct rcu_torture_ops tasks_ops = {
    .get_gp_seq = rcu_no_completed,
    .deferred_free = rcu_tasks_torture_deferred_free,
    .sync = synchronize_rcu_tasks,
    - .exp_sync = synchronize_rcu_tasks,
    + .exp_sync = synchronize_rcu_mult_test,
    .call = call_rcu_tasks,
    .cb_barrier = rcu_barrier_tasks,
    .fqs = NULL,
    --
    2.9.5
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