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authorMark Brown <broonie@opensource.wolfsonmicro.com>2011-07-24 21:30:55 +0100
committerMark Brown <broonie@opensource.wolfsonmicro.com>2011-08-08 15:56:16 +0900
commitfb2736bbaee0e704a4f33912cf532597b2dc5b33 (patch)
tree409629ad28230acd153d4b07c3e39d7afb324175 /include/trace
parent555fedacc366c4aaf48270da2504dfa97c41a130 (diff)
regmap: Add basic tracepoints
Trace single register reads and writes, plus start/stop tracepoints for the actual I/O to see where we're spending time. This makes it easy to have always on logging without overwhelming the logs and also lets us take advantage of all the context and time information that the trace subsystem collects for us. We don't currently trace register values for bulk operations as this would add complexity and overhead parsing the cooked data that's being worked with. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'include/trace')
-rw-r--r--include/trace/events/regmap.h112
1 files changed, 112 insertions, 0 deletions
diff --git a/include/trace/events/regmap.h b/include/trace/events/regmap.h
new file mode 100644
index 00000000000..1c76f40dee4
--- /dev/null
+++ b/include/trace/events/regmap.h
@@ -0,0 +1,112 @@
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM regmap
+
+#if !defined(_TRACE_REGMAP_H) || defined(TRACE_HEADER_MULTI_READ)
+#define _TRACE_REGMAP_H
+
+#include <linux/device.h>
+#include <linux/ktime.h>
+#include <linux/tracepoint.h>
+
+struct regmap;
+
+/*
+ * Log register events
+ */
+DECLARE_EVENT_CLASS(regmap_reg,
+
+ TP_PROTO(struct device *dev, unsigned int reg,
+ unsigned int val),
+
+ TP_ARGS(dev, reg, val),
+
+ TP_STRUCT__entry(
+ __string( name, dev_name(dev) )
+ __field( unsigned int, reg )
+ __field( unsigned int, val )
+ ),
+
+ TP_fast_assign(
+ __assign_str(name, dev_name(dev));
+ __entry->reg = reg;
+ __entry->val = val;
+ ),
+
+ TP_printk("%s reg=%x val=%x", __get_str(name),
+ (unsigned int)__entry->reg,
+ (unsigned int)__entry->val)
+);
+
+DEFINE_EVENT(regmap_reg, regmap_reg_write,
+
+ TP_PROTO(struct device *dev, unsigned int reg,
+ unsigned int val),
+
+ TP_ARGS(dev, reg, val)
+
+);
+
+DEFINE_EVENT(regmap_reg, regmap_reg_read,
+
+ TP_PROTO(struct device *dev, unsigned int reg,
+ unsigned int val),
+
+ TP_ARGS(dev, reg, val)
+
+);
+
+DECLARE_EVENT_CLASS(regmap_block,
+
+ TP_PROTO(struct device *dev, unsigned int reg, size_t count),
+
+ TP_ARGS(dev, reg, count),
+
+ TP_STRUCT__entry(
+ __string( name, dev_name(dev) )
+ __field( unsigned int, reg )
+ __field( size_t, count )
+ ),
+
+ TP_fast_assign(
+ __assign_str(name, dev_name(dev));
+ __entry->reg = reg;
+ __entry->count = count;
+ ),
+
+ TP_printk("%s reg=%x count=%d", __get_str(name),
+ (unsigned int)__entry->reg,
+ (size_t)__entry->count)
+);
+
+DEFINE_EVENT(regmap_block, regmap_hw_read_start,
+
+ TP_PROTO(struct device *dev, unsigned int reg, size_t count),
+
+ TP_ARGS(dev, reg, count)
+);
+
+DEFINE_EVENT(regmap_block, regmap_hw_read_done,
+
+ TP_PROTO(struct device *dev, unsigned int reg, size_t count),
+
+ TP_ARGS(dev, reg, count)
+);
+
+DEFINE_EVENT(regmap_block, regmap_hw_write_start,
+
+ TP_PROTO(struct device *dev, unsigned int reg, size_t count),
+
+ TP_ARGS(dev, reg, count)
+);
+
+DEFINE_EVENT(regmap_block, regmap_hw_write_done,
+
+ TP_PROTO(struct device *dev, unsigned int reg, size_t count),
+
+ TP_ARGS(dev, reg, count)
+);
+
+#endif /* _TRACE_REGMAP_H */
+
+/* This part must be outside protection */
+#include <trace/define_trace.h>