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authorPaul E. McKenney <paulmck@us.ibm.com>2006-06-27 02:54:04 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-06-27 17:32:40 -0700
commitc32e066057fe0914da262c94e52cefb142f965b4 (patch)
treec429649e39af7925a443c72f180349a451c7acbe /kernel/rcutorture.c
parent72e9bb549280b354311af30640c9433474f3a32c (diff)
downloadop-kernel-dev-c32e066057fe0914da262c94e52cefb142f965b4.zip
op-kernel-dev-c32e066057fe0914da262c94e52cefb142f965b4.tar.gz
[PATCH] rcutorture: add call_rcu_bh() operations
Add operations for the call_rcu_bh() variant of RCU. Also add an rcu_batches_completed_bh() function, which is needed by rcutorture. Signed-off-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, 38 insertions, 2 deletions
diff --git a/kernel/rcutorture.c b/kernel/rcutorture.c
index c96b5ed..4d1c3d2 100644
--- a/kernel/rcutorture.c
+++ b/kernel/rcutorture.c
@@ -66,7 +66,7 @@ MODULE_PARM_DESC(test_no_idle_hz, "Test support for tickless idle CPUs");
module_param(shuffle_interval, int, 0);
MODULE_PARM_DESC(shuffle_interval, "Number of seconds between shuffles");
module_param(torture_type, charp, 0);
-MODULE_PARM_DESC(torture_type, "Type of RCU to torture (rcu)");
+MODULE_PARM_DESC(torture_type, "Type of RCU to torture (rcu, rcu_bh)");
#define TORTURE_FLAG "-torture:"
#define PRINTK_STRING(s) \
@@ -246,8 +246,44 @@ static struct rcu_torture_ops rcu_ops = {
.name = "rcu"
};
+/*
+ * Definitions for rcu_bh torture testing.
+ */
+
+static int rcu_bh_torture_read_lock(void)
+{
+ rcu_read_lock_bh();
+ return 0;
+}
+
+static void rcu_bh_torture_read_unlock(int idx)
+{
+ rcu_read_unlock_bh();
+}
+
+static int rcu_bh_torture_completed(void)
+{
+ return rcu_batches_completed_bh();
+}
+
+static void rcu_bh_torture_deferred_free(struct rcu_torture *p)
+{
+ call_rcu_bh(&p->rtort_rcu, rcu_torture_cb);
+}
+
+static struct rcu_torture_ops rcu_bh_ops = {
+ .init = NULL,
+ .cleanup = NULL,
+ .readlock = rcu_bh_torture_read_lock,
+ .readunlock = rcu_bh_torture_read_unlock,
+ .completed = rcu_bh_torture_completed,
+ .deferredfree = rcu_bh_torture_deferred_free,
+ .stats = NULL,
+ .name = "rcu_bh"
+};
+
static struct rcu_torture_ops *torture_ops[] =
- { &rcu_ops, NULL };
+ { &rcu_ops, &rcu_bh_ops, NULL };
/*
* RCU torture writer kthread. Repeatedly substitutes a new structure
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