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>
diff --git a/sound/soc/soc-cache.c b/sound/soc/soc-cache.c
index f834839..db66dc4 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 @@
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;
}