On Sun, Dec 03, 2006 at 12:09:38AM +0300, Oleg Nesterov wrote:
> (with sparse annotations from Josh)
>
> [PATCH 2/2] qrcu: add rcutorture test
>
> Add rcutorture test for qrcu.
Works for me!
Acked-by: Paul E. McKenney <[email protected]>
> Signed-off-by: Oleg Nesterov <[email protected]>
> Signed-off-by: Josh Triplett <[email protected]>
>
> --- 19-rc6/include/linux/srcu.h~2_test 2006-11-30 04:32:42.000000000 +0300
> +++ 19-rc6/include/linux/srcu.h 2006-12-03 00:03:18.000000000 +0300
> @@ -64,8 +64,8 @@ struct qrcu_struct {
> };
>
> int init_qrcu_struct(struct qrcu_struct *qp);
> -int qrcu_read_lock(struct qrcu_struct *qp);
> -void qrcu_read_unlock(struct qrcu_struct *qp, int idx);
> +int qrcu_read_lock(struct qrcu_struct *qp) __acquires(qp);
> +void qrcu_read_unlock(struct qrcu_struct *qp, int idx) __releases(qp);
> void synchronize_qrcu(struct qrcu_struct *qp);
>
> /**
> --- 19-rc6/kernel/rcutorture.c~2_test 2006-10-22 18:24:03.000000000 +0400
> +++ 19-rc6/kernel/rcutorture.c 2006-12-03 00:03:18.000000000 +0300
> @@ -465,6 +465,73 @@ static struct rcu_torture_ops srcu_ops =
> };
>
> /*
> + * Definitions for qrcu torture testing.
> + */
> +
> +static struct qrcu_struct qrcu_ctl;
> +
> +static void qrcu_torture_init(void)
> +{
> + init_qrcu_struct(&qrcu_ctl);
> + rcu_sync_torture_init();
> +}
> +
> +static void qrcu_torture_cleanup(void)
> +{
> + synchronize_qrcu(&qrcu_ctl);
> + cleanup_qrcu_struct(&qrcu_ctl);
> +}
> +
> +static int qrcu_torture_read_lock(void) __acquires(&qrcu_ctl)
> +{
> + return qrcu_read_lock(&qrcu_ctl);
> +}
> +
> +static void qrcu_torture_read_unlock(int idx) __releases(&qrcu_ctl)
> +{
> + qrcu_read_unlock(&qrcu_ctl, idx);
> +}
> +
> +static int qrcu_torture_completed(void)
> +{
> + return qrcu_ctl.completed;
> +}
> +
> +static void qrcu_torture_synchronize(void)
> +{
> + synchronize_qrcu(&qrcu_ctl);
> +}
> +
> +static int qrcu_torture_stats(char *page)
> +{
> + int cnt = 0;
> + int idx = qrcu_ctl.completed & 0x1;
> +
> + cnt += sprintf(&page[cnt], "%s%s per-CPU(idx=%d):",
> + torture_type, TORTURE_FLAG, idx);
> +
> + cnt += sprintf(&page[cnt], " (%d,%d)",
> + atomic_read(qrcu_ctl.ctr + 0),
> + atomic_read(qrcu_ctl.ctr + 1));
> +
> + cnt += sprintf(&page[cnt], "\n");
> + return cnt;
> +}
> +
> +static struct rcu_torture_ops qrcu_ops = {
> + .init = qrcu_torture_init,
> + .cleanup = qrcu_torture_cleanup,
> + .readlock = qrcu_torture_read_lock,
> + .readdelay = srcu_read_delay,
> + .readunlock = qrcu_torture_read_unlock,
> + .completed = qrcu_torture_completed,
> + .deferredfree = rcu_sync_torture_deferred_free,
> + .sync = qrcu_torture_synchronize,
> + .stats = qrcu_torture_stats,
> + .name = "qrcu"
> +};
> +
> +/*
> * Definitions for sched torture testing.
> */
>
> @@ -503,8 +570,8 @@ static struct rcu_torture_ops sched_ops
> };
>
> static struct rcu_torture_ops *torture_ops[] =
> - { &rcu_ops, &rcu_sync_ops, &rcu_bh_ops, &rcu_bh_sync_ops, &srcu_ops,
> - &sched_ops, NULL };
> + { &rcu_ops, &rcu_sync_ops, &rcu_bh_ops, &rcu_bh_sync_ops,
> + &srcu_ops, &qrcu_ops, &sched_ops, NULL };
>
> /*
> * RCU torture writer kthread. Repeatedly substitutes a new structure
>
-
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