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Commit 5d5b7d4f authored by Mark Brown's avatar Mark Brown
Browse files

regmap: Add tracepoints for cache only and cache bypass 



Useful for figuring out where the hardware interaction went or came from.

Signed-off-by: default avatarMark Brown <broonie@opensource.wolfsonmicro.com>
parent a3c37741

drivers/base/regmap/regcache.c

+2 −0
Original line number Diff line number Diff line
@@ -313,6 +313,7 @@ void regcache_cache_only(struct regmap *map, bool enable) 
	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 @@ void regcache_cache_bypass(struct regmap *map, bool enable) 
	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);

include/trace/events/regmap.h

+36 −0
Original line number Diff line number Diff line
@@ -139,6 +139,42 @@ TRACE_EVENT(regcache_sync, 
		  __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 */