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ALSA: hda - Add tracepoint for unsolicited events 

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2011-08-09 14:22:44 +02:00
parent d11b7fa3d5
commit ecf726f541
3 changed files with 25 additions and 1 deletions
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3
Documentation/sound/alsa/HD-Audio.txt
View File

@ -529,7 +529,8 @@ Tracepoints
The hd-audio driver gives a few basic tracepoints.
`hda:hda_send_cmd` traces each CORB write while `hda:hda_get_response`
traces the response from RIRB (only when read from the codec driver).
`hda:hda_bus_reset` traces the bus-reset due to fatal error, etc, and
`hda:hda_bus_reset` traces the bus-reset due to fatal error, etc,
`hda:hda_unsol_event` traces the unsolicited events, and
`hda:hda_power_down` and `hda:hda_power_up` trace the power down/up
via power-saving behavior.

1
sound/pci/hda/hda_codec.c
View File

@ -610,6 +610,7 @@ int snd_hda_queue_unsol_event(struct hda_bus *bus, u32 res, u32 res_ex)
struct hda_bus_unsolicited *unsol;
unsigned int wp;
trace_hda_unsol_event(bus, res, res_ex);
unsol = bus->unsol;
if (!unsol)
return 0;

22
sound/pci/hda/hda_trace.h
View File

@ -87,6 +87,28 @@ DEFINE_EVENT(hda_power, hda_power_up,
TP_ARGS(codec)
);
TRACE_EVENT(hda_unsol_event,
TP_PROTO(struct hda_bus *bus, u32 res, u32 res_ex),
TP_ARGS(bus, res, res_ex),
TP_STRUCT__entry(
__field( unsigned int, card )
__field( u32, res )
__field( u32, res_ex )
),
TP_fast_assign(
__entry->card = (bus)->card->number;
__entry->res = res;
__entry->res_ex = res_ex;
),
TP_printk("[%d] res=%x, res_ex=%x", __entry->card,
__entry->res, __entry->res_ex)
);
#endif /* _TRACE_HDA_H */
/* This part must be outside protection */