ALSA: hda - Add tracepoints at snd_hda_power_up/down entrances.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

2 files changed, 26 insertions, 0 deletions

diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c
index 408babc10437..ad0101e2d4ff 100644
--- a/sound/pci/hda/hda_codec.c
+++ b/sound/pci/hda/hda_codec.c
@@ -4417,6 +4417,7 @@ static void __snd_hda_power_up(struct hda_codec *codec, bool wait_power_down)
 
         spin_lock(&codec->power_lock);
         codec->power_count++;
+        trace_hda_power_count(codec);
         /* Return if power_on or transitioning to power_on, unless currently
          * powering down. */
         if ((codec->power_on || codec->power_transition > 0) &&
@@ -4496,6 +4497,7 @@ void snd_hda_power_down(struct hda_codec *codec)
 {
         spin_lock(&codec->power_lock);
         --codec->power_count;
+        trace_hda_power_count(codec);
         if (!codec->power_on || codec->power_count || codec->power_transition) {
                 spin_unlock(&codec->power_lock);
                 return;
diff --git a/sound/pci/hda/hda_trace.h b/sound/pci/hda/hda_trace.h
index 9884871ddb00..9a34b867d8c2 100644
--- a/sound/pci/hda/hda_trace.h
+++ b/sound/pci/hda/hda_trace.h
@@ -87,6 +87,30 @@ DEFINE_EVENT(hda_power, hda_power_up,
         TP_ARGS(codec)
 );
 
+TRACE_EVENT(hda_power_count,
+        TP_PROTO(struct hda_codec *codec),
+        TP_ARGS(codec),
+        TP_STRUCT__entry(
+                __field( unsigned int, card )
+                __field( unsigned int, addr )
+                __field( int, power_count )
+                __field( int, power_on )
+                __field( int, power_transition )
+        ),
+
+        TP_fast_assign(
+                __entry->card = (codec)->bus->card->number;
+                __entry->addr = (codec)->addr;
+                __entry->power_count = (codec)->power_count;
+                __entry->power_on = (codec)->power_on;
+                __entry->power_transition = (codec)->power_transition;
+        ),
+
+        TP_printk("[%d:%d] power_count=%d, power_on=%d, power_transition=%d",
+                  __entry->card, __entry->addr, __entry->power_count,
+                  __entry->power_on, __entry->power_transition)
+);
+
 TRACE_EVENT(hda_unsol_event,
 
         TP_PROTO(struct hda_bus *bus, u32 res, u32 res_ex),