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regmap: async: Add tracepoints for async I/O

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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>
This commit is contained in:
Mark Brown 2013-02-21 19:05:48 +00:00
commit fe7d4ccd1d
2 changed files with 56 additions and 0 deletions
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48
include/trace/events/regmap.h
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@ -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 */