Re: [PATCH 3/4] rcu: Add rcu_bh_sync torture type to rcutorture

Paul E. McKenney
2006-09-01T01:29:22Z

On Thu, Aug 31, 2006 at 03:56:56PM -0700, Josh Triplett wrote:
> Use the newly-generic synchronous deferred free function to implement torture
> testing for rcu_bh using synchronize_rcu_bh rather than the asynchronous
> call_rcu_bh.

Acked-by: Paul E. McKenney <paulmck@us.ibm.com>

> Signed-off-by: Josh Triplett <josh@freedesktop.org>
> ---
> Documentation/RCU/torture.txt | 5 +++--
> kernel/rcutorture.c | 16 +++++++++++++++-
> 2 files changed, 18 insertions(+), 3 deletions(-)
>
> diff --git a/Documentation/RCU/torture.txt b/Documentation/RCU/torture.txt
> index 6714b53..cc4b1ef 100644
> --- a/Documentation/RCU/torture.txt
> +++ b/Documentation/RCU/torture.txt
> @@ -55,8 +55,9 @@ test_no_idle_hz Whether or not to test t
>
> torture_type The type of RCU to test: "rcu" for the rcu_read_lock() API,
> "rcu_sync" for rcu_read_lock() with synchronous reclamation,
> - "rcu_bh" for the rcu_read_lock_bh() API, and "srcu" for the
> - "srcu_read_lock()" API.
> + "rcu_bh" for the rcu_read_lock_bh() API, "rcu_bh_sync" for
> + rcu_read_lock_bh() with synchronous reclamation, and "srcu"
> + for the "srcu_read_lock()" API.
>
> verbose Enable debug printk()s. Default is disabled.
>
> diff --git a/kernel/rcutorture.c b/kernel/rcutorture.c
> index 1c329df..0f0ff15 100644
> --- a/kernel/rcutorture.c
> +++ b/kernel/rcutorture.c
> @@ -370,6 +370,19 @@ static struct rcu_torture_ops rcu_bh_ops
> .name = "rcu_bh"
> };
>
> +static struct rcu_torture_ops rcu_bh_sync_ops = {
> + .init = rcu_sync_torture_init,
> + .cleanup = NULL,
> + .readlock = rcu_bh_torture_read_lock,
> + .readdelay = rcu_read_delay, /* just reuse rcu's version. */
> + .readunlock = rcu_bh_torture_read_unlock,
> + .completed = rcu_bh_torture_completed,
> + .deferredfree = rcu_sync_torture_deferred_free,
> + .sync = rcu_bh_torture_synchronize,
> + .stats = NULL,
> + .name = "rcu_bh_sync"
> +};
> +
> /*
> * Definitions for srcu torture testing.
> */
> @@ -452,7 +465,8 @@ static struct rcu_torture_ops srcu_ops =
> };
>
> static struct rcu_torture_ops *torture_ops[] =
> - { &rcu_ops, &rcu_sync_ops, &rcu_bh_ops, &srcu_ops, NULL };
> + { &rcu_ops, &rcu_sync_ops, &rcu_bh_ops, &rcu_bh_sync_ops, &srcu_ops,
> + NULL };
>
> /*
> * RCU torture writer kthread. Repeatedly substitutes a new structure
> --
> 1.4.1.1
>
>