regmap: async: Add tracepoints for async I/O

Trace when we start and complete async writes, and when we start and
finish blocking for their completion. This is useful for performance
analysis of the resulting I/O patterns.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

1 files changed, 48 insertions, 0 deletions

diff --git a/include/trace/events/regmap.h b/include/trace/events/regmap.h
index 41a7dbd570e2..a43a2f67bd8e 100644
--- a/include/trace/events/regmap.h
+++ b/include/trace/events/regmap.h
@@ -175,6 +175,54 @@ DEFINE_EVENT(regmap_bool, regmap_cache_bypass,
 
 );
 
+DECLARE_EVENT_CLASS(regmap_async,
+
+        TP_PROTO(struct device *dev),
+
+        TP_ARGS(dev),
+
+        TP_STRUCT__entry(
+                __string(       name,           dev_name(dev)   )
+        ),
+
+        TP_fast_assign(
+                __assign_str(name, dev_name(dev));
+        ),
+
+        TP_printk("%s", __get_str(name))
+);
+
+DEFINE_EVENT(regmap_block, regmap_async_write_start,
+
+        TP_PROTO(struct device *dev, unsigned int reg, int count),
+
+        TP_ARGS(dev, reg, count)
+);
+
+DEFINE_EVENT(regmap_async, regmap_async_io_complete,
+
+        TP_PROTO(struct device *dev),
+
+        TP_ARGS(dev)
+
+);
+
+DEFINE_EVENT(regmap_async, regmap_async_complete_start,
+
+        TP_PROTO(struct device *dev),
+
+        TP_ARGS(dev)
+
+);
+
+DEFINE_EVENT(regmap_async, regmap_async_complete_done,
+
+        TP_PROTO(struct device *dev),
+
+        TP_ARGS(dev)
+
+);
+
 #endif /* _TRACE_REGMAP_H */
 
 /* This part must be outside protection */