X-Git-Url: http://git.lttng.org/?a=blobdiff_plain;f=instrumentation%2Fevents%2Flttng-module%2Flttng-statedump.h;h=efd22d77dfb774a7711ed4a0daa6dd45149ceafa;hb=f0dbdefbdbc26a000ed546180b22144c5b48857d;hp=ea0b6d9d99eeeade8aaec9be89cee228c85e729f;hpb=73e8ba371039bc05745a739db4d69b4220a1c03e;p=lttng-modules.git

diff --git a/instrumentation/events/lttng-module/lttng-statedump.h b/instrumentation/events/lttng-module/lttng-statedump.h
index ea0b6d9d..efd22d77 100644
--- a/instrumentation/events/lttng-module/lttng-statedump.h
+++ b/instrumentation/events/lttng-module/lttng-statedump.h
@@ -7,6 +7,7 @@
 #include <linux/tracepoint.h>
 #include <linux/nsproxy.h>
 #include <linux/pid_namespace.h>
+#include <linux/types.h>
 
 TRACE_EVENT(lttng_statedump_start,
 	TP_PROTO(struct lttng_session *session),
@@ -67,10 +68,12 @@ TRACE_EVENT(lttng_statedump_process_state,
 				struct task_struct *parent;
 				pid_t ret = 0;
 
-				rcu_read_lock();
-				parent = rcu_dereference(p->real_parent);
-				ret = task_tgid_nr_ns(parent, pid_ns);
-				rcu_read_unlock();
+				if (pid_ns) {
+					rcu_read_lock();
+					parent = rcu_dereference(p->real_parent);
+					ret = task_tgid_nr_ns(parent, pid_ns);
+					rcu_read_unlock();
+				}
 				ret;
 			}))
 		tp_memcpy(name, p->comm, TASK_COMM_LEN)
@@ -139,6 +142,21 @@ TRACE_EVENT(lttng_statedump_network_interface,
 	TP_printk("")
 )
 
+TRACE_EVENT(lttng_statedump_block_device,
+	TP_PROTO(struct lttng_session *session,
+		dev_t dev, const char *diskname),
+	TP_ARGS(session, dev, diskname),
+	TP_STRUCT__entry(
+		__field(dev_t, dev)
+		__string(diskname, diskname)
+	),
+	TP_fast_assign(
+		tp_assign(dev, dev)
+		tp_strcpy(diskname, diskname)
+	),
+	TP_printk("")
+)
+
 /* Called with desc->lock held */
 TRACE_EVENT(lttng_statedump_interrupt,
 	TP_PROTO(struct lttng_session *session,
@@ -148,12 +166,12 @@ TRACE_EVENT(lttng_statedump_interrupt,
 	TP_STRUCT__entry(
 		__field(unsigned int, irq)
 		__string(name, chip_name)
-		__string(action, action->name)
+		__string(action, action->name ? : "")
 	),
 	TP_fast_assign(
 		tp_assign(irq, irq)
 		tp_strcpy(name, chip_name)
-		tp_strcpy(action, action->name)
+		tp_strcpy(action, action->name ? : "")
 	),
 	TP_printk("")
 )