Rename the "discard" directory to "deprecated"

[lttng-modules.git] / deprecated / probes / rcu-trace.c

diff --git a/deprecated/probes/rcu-trace.c b/deprecated/probes/rcu-trace.c
new file mode 100644 (file)
index 0000000..cc16454
--- /dev/null
+++ b/deprecated/probes/rcu-trace.c
@@ -0,0 +1,36 @@
+/*
+ * ltt/probes/rcu-trace.c
+ *
+ * RCU tracepoint probes.
+ *
+ * (C) Copyright 2009 - Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
+ * Dual LGPL v2.1/GPL v2 license.
+ */
+
+#include <linux/module.h>
+#include <trace/rcu.h>
+
+#ifdef CONFIG_TREE_RCU
+void probe_rcu_tree_callback(void *data, struct rcu_head *head)
+{
+       trace_mark_tp(rcu, tree_callback, rcu_tree_callback,
+               probe_rcu_tree_callback, "func %p", head->func);
+}
+
+void probe_rcu_tree_call_rcu(void *data, struct rcu_head *head, unsigned long ip)
+{
+       trace_mark_tp(rcu, tree_call_rcu, rcu_tree_call_rcu,
+               probe_rcu_tree_call_rcu, "func %p ip 0x%lX", head->func, ip);
+}
+
+void probe_rcu_tree_call_rcu_bh(void *data, struct rcu_head *head, unsigned long ip)
+{
+       trace_mark_tp(rcu, tree_call_rcu_bh, rcu_tree_call_rcu_bh,
+               probe_rcu_tree_call_rcu_bh, "func %p ip 0x%lX",
+               head->func, ip);
+}
+#endif
+
+MODULE_LICENSE("GPL and additional rights");
+MODULE_AUTHOR("Mathieu Desnoyers");
+MODULE_DESCRIPTION("RCU Tracepoint Probes");