From c358e640a669b528b32af5442c92b856de623e1c Mon Sep 17 00:00:00 2001
From: Dimitris Papastamos <dp@opensource.wolfsonmicro.com>
Date: Fri, 21 Jan 2011 15:29:02 +0000
Subject: ASoC: soc-cache: Add trace event for snd_soc_cache_sync()
This patch makes it easy to see when the syncing process begins and
ends. You can also enable the snd_soc_reg_write tracepoint to see
which registers are being synced.
Signed-off-by: Dimitris Papastamos <dp@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
---
include/trace/events/asoc.h | 25 +++++++++++++++++++++++++
sound/soc/soc-cache.c | 10 ++++++++++
2 files changed, 35 insertions(+)
diff --git a/include/trace/events/asoc.h b/include/trace/events/asoc.h
index 186e84db4b54..ae973d2e27a1 100644
--- a/include/trace/events/asoc.h
+++ b/include/trace/events/asoc.h
@@ -229,6 +229,31 @@ TRACE_EVENT(snd_soc_jack_notify,
TP_printk("jack=%s %x", __get_str(name), (int)__entry->val)
);
+TRACE_EVENT(snd_soc_cache_sync,
+
+ TP_PROTO(struct snd_soc_codec *codec, const char *type,
+ const char *status),
+
+ TP_ARGS(codec, type, status),
+
+ TP_STRUCT__entry(
+ __string( name, codec->name )
+ __string( status, status )
+ __string( type, type )
+ __field( int, id )
+ ),
+
+ TP_fast_assign(
+ __assign_str(name, codec->name);
+ __assign_str(status, status);
+ __assign_str(type, type);
+ __entry->id = codec->id;
+ ),
+
+ TP_printk("codec=%s.%d type=%s status=%s", __get_str(name),
+ (int)__entry->id, __get_str(type), __get_str(status))
+);
+
#endif /* _TRACE_ASOC_H */
/* This part must be outside protection */
diff --git a/sound/soc/soc-cache.c b/sound/soc/soc-cache.c
index f83483963791..db66dc44add2 100644
--- a/sound/soc/soc-cache.c
+++ b/sound/soc/soc-cache.c
@@ -18,6 +18,8 @@
#include <linux/bitmap.h>
#include <linux/rbtree.h>
+#include <trace/events/asoc.h>
+
static unsigned int snd_soc_4_12_read(struct snd_soc_codec *codec,
unsigned int reg)
{
@@ -1601,18 +1603,26 @@ EXPORT_SYMBOL_GPL(snd_soc_cache_write);
int snd_soc_cache_sync(struct snd_soc_codec *codec)
{
int ret;
+ const char *name;
if (!codec->cache_sync) {
return 0;
}
+ if (codec->cache_ops->name)
+ name = codec->cache_ops->name;
+ else
+ name = "unknown";
+
if (codec->cache_ops && codec->cache_ops->sync) {
if (codec->cache_ops->name)
dev_dbg(codec->dev, "Syncing %s cache for %s codec\n",
codec->cache_ops->name, codec->name);
+ trace_snd_soc_cache_sync(codec, name, "start");
ret = codec->cache_ops->sync(codec);
if (!ret)
codec->cache_sync = 0;
+ trace_snd_soc_cache_sync(codec, name, "end");
return ret;
}
--
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