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authorJosh Triplett <josht@us.ibm.com>2006-10-04 02:17:16 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-10-04 07:55:31 -0700
commit4b6c2cca6eef9cc4a15350bf1c61839e12e08b84 (patch)
tree47c59830f653cb20716bd24fa5272963cceaa68f /kernel/rcutorture.c
parent11a147013e39ff4cb031395cb78a9d307c4799cd (diff)
[PATCH] rcu: add sched torture type to rcutorture
Implement torture testing for the "sched" variant of RCU, which uses preempt_disable, preempt_enable, and synchronize_sched. Signed-off-by: Josh Triplett <josh@freedesktop.org> Acked-by: Paul E. McKenney <paulmck@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'kernel/rcutorture.c')
-rw-r--r--kernel/rcutorture.c40
1 files changed, 39 insertions, 1 deletions
diff --git a/kernel/rcutorture.c b/kernel/rcutorture.c
index 0f0ff1556b5d..e2bda18f6f42 100644
--- a/kernel/rcutorture.c
+++ b/kernel/rcutorture.c
@@ -464,9 +464,47 @@ static struct rcu_torture_ops srcu_ops = {
.name = "srcu"
};
+/*
+ * Definitions for sched torture testing.
+ */
+
+static int sched_torture_read_lock(void)
+{
+ preempt_disable();
+ return 0;
+}
+
+static void sched_torture_read_unlock(int idx)
+{
+ preempt_enable();
+}
+
+static int sched_torture_completed(void)
+{
+ return 0;
+}
+
+static void sched_torture_synchronize(void)
+{
+ synchronize_sched();
+}
+
+static struct rcu_torture_ops sched_ops = {
+ .init = rcu_sync_torture_init,
+ .cleanup = NULL,
+ .readlock = sched_torture_read_lock,
+ .readdelay = rcu_read_delay, /* just reuse rcu's version. */
+ .readunlock = sched_torture_read_unlock,
+ .completed = sched_torture_completed,
+ .deferredfree = rcu_sync_torture_deferred_free,
+ .sync = sched_torture_synchronize,
+ .stats = NULL,
+ .name = "sched"
+};
+
static struct rcu_torture_ops *torture_ops[] =
{ &rcu_ops, &rcu_sync_ops, &rcu_bh_ops, &rcu_bh_sync_ops, &srcu_ops,
- NULL };
+ &sched_ops, NULL };
/*
* RCU torture writer kthread. Repeatedly substitutes a new structure