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

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Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2012-08-20 10:22:25 +02:00
parent 6f0fa66051
commit b244d33560
2 changed files with 26 additions and 0 deletions
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2
sound/pci/hda/hda_codec.c
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@ -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;

24
sound/pci/hda/hda_trace.h
View file

@ -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),