1 files changed, 107 insertions, 0 deletions

diff --git a/include/trace/events/lock.h b/include/trace/events/lock.h
new file mode 100644
index 000000000000..5c1dcfc16c60
--- /dev/null
+++ b/include/trace/events/lock.h
@@ -0,0 +1,107 @@
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM lock
+
+#if !defined(_TRACE_LOCK_H) || defined(TRACE_HEADER_MULTI_READ)
+#define _TRACE_LOCK_H
+
+#include <linux/lockdep.h>
+#include <linux/tracepoint.h>
+
+#ifdef CONFIG_LOCKDEP
+
+TRACE_EVENT(lock_acquire,
+
+        TP_PROTO(struct lockdep_map *lock, unsigned int subclass,
+                int trylock, int read, int check,
+                struct lockdep_map *next_lock, unsigned long ip),
+
+        TP_ARGS(lock, subclass, trylock, read, check, next_lock, ip),
+
+        TP_STRUCT__entry(
+                __field(unsigned int, flags)
+                __string(name, lock->name)
+                __field(void *, lockdep_addr)
+        ),
+
+        TP_fast_assign(
+                __entry->flags = (trylock ? 1 : 0) | (read ? 2 : 0);
+                __assign_str(name, lock->name);
+                __entry->lockdep_addr = lock;
+        ),
+
+        TP_printk("%p %s%s%s", __entry->lockdep_addr,
+                  (__entry->flags & 1) ? "try " : "",
+                  (__entry->flags & 2) ? "read " : "",
+                  __get_str(name))
+);
+
+TRACE_EVENT(lock_release,
+
+        TP_PROTO(struct lockdep_map *lock, int nested, unsigned long ip),
+
+        TP_ARGS(lock, nested, ip),
+
+        TP_STRUCT__entry(
+                __string(name, lock->name)
+                __field(void *, lockdep_addr)
+        ),
+
+        TP_fast_assign(
+                __assign_str(name, lock->name);
+                __entry->lockdep_addr = lock;
+        ),
+
+        TP_printk("%p %s",
+                  __entry->lockdep_addr, __get_str(name))
+);
+
+#ifdef CONFIG_LOCK_STAT
+
+TRACE_EVENT(lock_contended,
+
+        TP_PROTO(struct lockdep_map *lock, unsigned long ip),
+
+        TP_ARGS(lock, ip),
+
+        TP_STRUCT__entry(
+                __string(name, lock->name)
+                __field(void *, lockdep_addr)
+        ),
+
+        TP_fast_assign(
+                __assign_str(name, lock->name);
+                __entry->lockdep_addr = lock;
+        ),
+
+        TP_printk("%p %s",
+                  __entry->lockdep_addr, __get_str(name))
+);
+
+TRACE_EVENT(lock_acquired,
+        TP_PROTO(struct lockdep_map *lock, unsigned long ip, s64 waittime),
+
+        TP_ARGS(lock, ip, waittime),
+
+        TP_STRUCT__entry(
+                __string(name, lock->name)
+                __field(s64, wait_nsec)
+                __field(void *, lockdep_addr)
+        ),
+
+        TP_fast_assign(
+                __assign_str(name, lock->name);
+                __entry->wait_nsec = waittime;
+                __entry->lockdep_addr = lock;
+        ),
+        TP_printk("%p %s (%llu ns)", __entry->lockdep_addr,
+                  __get_str(name),
+                  __entry->wait_nsec)
+);
+
+#endif
+#endif
+
+#endif /* _TRACE_LOCK_H */
+
+/* This part must be outside protection */
+#include <trace/define_trace.h>