regmap: Add tracepoints for cache only and cache bypass
Useful for figuring out where the hardware interaction went or came from.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/drivers/base/regmap/regcache.c b/drivers/base/regmap/regcache.c
index 69d4c9c..2d89ce0 100644
--- a/drivers/base/regmap/regcache.c
+++ b/drivers/base/regmap/regcache.c
@@ -313,6 +313,7 @@
mutex_lock(&map->lock);
WARN_ON(map->cache_bypass && enable);
map->cache_only = enable;
+ trace_regmap_cache_only(map->dev, enable);
mutex_unlock(&map->lock);
}
EXPORT_SYMBOL_GPL(regcache_cache_only);
@@ -350,6 +351,7 @@
mutex_lock(&map->lock);
WARN_ON(map->cache_only && enable);
map->cache_bypass = enable;
+ trace_regmap_cache_bypass(map->dev, enable);
mutex_unlock(&map->lock);
}
EXPORT_SYMBOL_GPL(regcache_cache_bypass);
diff --git a/include/trace/events/regmap.h b/include/trace/events/regmap.h
index 12fbf43..d697382 100644
--- a/include/trace/events/regmap.h
+++ b/include/trace/events/regmap.h
@@ -139,6 +139,42 @@
__get_str(type), __get_str(status))
);
+DECLARE_EVENT_CLASS(regmap_bool,
+
+ TP_PROTO(struct device *dev, bool flag),
+
+ TP_ARGS(dev, flag),
+
+ TP_STRUCT__entry(
+ __string( name, dev_name(dev) )
+ __field( int, flag )
+ ),
+
+ TP_fast_assign(
+ __assign_str(name, dev_name(dev));
+ __entry->flag = flag;
+ ),
+
+ TP_printk("%s flag=%d", __get_str(name),
+ (int)__entry->flag)
+);
+
+DEFINE_EVENT(regmap_bool, regmap_cache_only,
+
+ TP_PROTO(struct device *dev, bool flag),
+
+ TP_ARGS(dev, flag)
+
+);
+
+DEFINE_EVENT(regmap_bool, regmap_cache_bypass,
+
+ TP_PROTO(struct device *dev, bool flag),
+
+ TP_ARGS(dev, flag)
+
+);
+
#endif /* _TRACE_REGMAP_H */
/* This part must be outside protection */