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authorMark Brown <broonie@opensource.wolfsonmicro.com>2010-11-03 18:05:58 -0400
committerMark Brown <broonie@opensource.wolfsonmicro.com>2010-11-11 14:54:26 +0000
commita8b1d34f3ee1bc139ac5fbe3f84f6d16c90136bb (patch)
treed4efe677408e0ad8c1f32641650446205581513a /include/trace
parent68f89ad8c233a88b10404c5fd8a1109d12999962 (diff)
downloadop-kernel-dev-a8b1d34f3ee1bc139ac5fbe3f84f6d16c90136bb.zip
op-kernel-dev-a8b1d34f3ee1bc139ac5fbe3f84f6d16c90136bb.tar.gz
ASoC: Add trace events for ASoC register read/write
The trace subsystem provides a convenient way of instrumenting the kernel which can be left on all the time with extremely low impact on the system unlike prints to the kernel log which can be very spammy. Begin adding support for instrumenting ASoC via this interface by adding trace for the register access primitives. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Diffstat (limited to 'include/trace')
-rw-r--r--include/trace/events/asoc.h64
1 files changed, 64 insertions, 0 deletions
diff --git a/include/trace/events/asoc.h b/include/trace/events/asoc.h
new file mode 100644
index 0000000..93c3371
--- /dev/null
+++ b/include/trace/events/asoc.h
@@ -0,0 +1,64 @@
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM asoc
+
+#if !defined(_TRACE_ASOC_H) || defined(TRACE_HEADER_MULTI_READ)
+#define _TRACE_ASOC_H
+
+#include <linux/ktime.h>
+#include <linux/tracepoint.h>
+
+struct snd_soc_codec;
+
+/*
+ * Log register events
+ */
+DECLARE_EVENT_CLASS(snd_soc_reg,
+
+ TP_PROTO(struct snd_soc_codec *codec, unsigned int reg,
+ unsigned int val),
+
+ TP_ARGS(codec, reg, val),
+
+ TP_STRUCT__entry(
+ __string( name, codec->name )
+ __field( int, id )
+ __field( unsigned int, reg )
+ __field( unsigned int, val )
+ ),
+
+ TP_fast_assign(
+ __assign_str(name, codec->name);
+ __entry->id = codec->id;
+ __entry->reg = reg;
+ __entry->val = val;
+ ),
+
+ TP_printk("codec=%s.%d reg=%x val=%x", __get_str(name),
+ (int)__entry->id, (unsigned int)__entry->reg,
+ (unsigned int)__entry->val)
+);
+
+DEFINE_EVENT(snd_soc_reg, snd_soc_reg_write,
+
+ TP_PROTO(struct snd_soc_codec *codec, unsigned int reg,
+ unsigned int val),
+
+ TP_ARGS(codec, reg, val)
+
+);
+
+DEFINE_EVENT(snd_soc_reg, snd_soc_reg_read,
+
+ TP_PROTO(struct snd_soc_codec *codec, unsigned int reg,
+ unsigned int val),
+
+ TP_ARGS(codec, reg, val)
+
+);
+
+
+
+#endif /* _TRACE_ASOC_H */
+
+/* This part must be outside protection */
+#include <trace/define_trace.h>
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