Messages in this thread Patch in this message | | | From | Jens Axboe <> | Subject | [PATCH] 2/4 qrcu: add rcutorture test | Date | Wed, 3 Jan 2007 08:48:26 +0100 |
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From: Oleg Nesterov <oleg@tv-sign.ru>
Add rcutorture test for qrcu.
Works for me!
Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru> Signed-off-by: Josh Triplett <josh@freedesktop.org> Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Acked-by: Jens Axboe <jens.axboe@oracle.com> --- include/linux/srcu.h | 4 +- kernel/rcutorture.c | 71 ++++++++++++++++++++++++++++++++++++++++++++++++- 2 files changed, 71 insertions(+), 4 deletions(-)
diff --git a/include/linux/srcu.h b/include/linux/srcu.h index fcdb749..03a9010 100644 --- a/include/linux/srcu.h +++ b/include/linux/srcu.h @@ -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); /** diff --git a/kernel/rcutorture.c b/kernel/rcutorture.c index 482b11f..bd7fd49 100644 --- a/kernel/rcutorture.c +++ b/kernel/rcutorture.c @@ -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 -- 1.4.4.2.g02c9 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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