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ALSA: hda - Add basic tracepoints

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Add a few tracepoints to HD-audio driver.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2011-08-02 15:39:31 +02:00
parent c3540b81ee
commit d66fee5d65
3 changed files with 108 additions and 1 deletions
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3
sound/pci/hda/Makefile
View File

@ -6,6 +6,9 @@ snd-hda-codec-$(CONFIG_PROC_FS) += hda_proc.o
snd-hda-codec-$(CONFIG_SND_HDA_HWDEP) += hda_hwdep.o
snd-hda-codec-$(CONFIG_SND_HDA_INPUT_BEEP) += hda_beep.o
# for trace-points
CFLAGS_hda_codec.o := -I$(src)
snd-hda-codec-realtek-objs := patch_realtek.o
snd-hda-codec-cmedia-objs := patch_cmedia.o
snd-hda-codec-analog-objs := patch_analog.o

11
sound/pci/hda/hda_codec.c
View File

@ -34,6 +34,9 @@
#include "hda_beep.h"
#include <sound/hda_hwdep.h>
#define CREATE_TRACE_POINTS
#include "hda_trace.h"
/*
* vendor / preset table
*/
@ -208,15 +211,19 @@ static int codec_exec_verb(struct hda_codec *codec, unsigned int cmd,
again:
snd_hda_power_up(codec);
mutex_lock(&bus->cmd_mutex);
trace_hda_send_cmd(codec, cmd);
err = bus->ops.command(bus, cmd);
if (!err && res)
if (!err && res) {
*res = bus->ops.get_response(bus, codec->addr);
trace_hda_get_response(codec, *res);
}
mutex_unlock(&bus->cmd_mutex);
snd_hda_power_down(codec);
if (res && *res == -1 && bus->rirb_error) {
if (bus->response_reset) {
snd_printd("hda_codec: resetting BUS due to "
"fatal communication error\n");
trace_hda_bus_reset(bus);
bus->ops.bus_reset(bus);
}
goto again;
@ -4083,6 +4090,7 @@ static void hda_power_work(struct work_struct *work)
return;
}
trace_hda_power_down(codec);
hda_call_codec_suspend(codec);
if (bus->ops.pm_notify)
bus->ops.pm_notify(bus);
@ -4121,6 +4129,7 @@ void snd_hda_power_up(struct hda_codec *codec)
if (codec->power_on || codec->power_transition)
return;
trace_hda_power_up(codec);
snd_hda_update_power_acct(codec);
codec->power_on = 1;
codec->power_jiffies = jiffies;

95
sound/pci/hda/hda_trace.h Normal file
View File

@ -0,0 +1,95 @@
#undef TRACE_SYSTEM
#define TRACE_SYSTEM hda
#define TRACE_INCLUDE_FILE hda_trace
#if !defined(_TRACE_HDA_H) || defined(TRACE_HEADER_MULTI_READ)
#define _TRACE_HDA_H
#include <linux/tracepoint.h>
struct hda_bus;
struct hda_codec;
DECLARE_EVENT_CLASS(hda_cmd,
TP_PROTO(struct hda_codec *codec, unsigned int val),
TP_ARGS(codec, val),
TP_STRUCT__entry(
__field( unsigned int, card )
__field( unsigned int, addr )
__field( unsigned int, val )
),
TP_fast_assign(
__entry->card = (codec)->bus->card->number;
__entry->addr = (codec)->addr;
__entry->val = (val);
),
TP_printk("[%d:%d] val=%x", __entry->card, __entry->addr, __entry->val)
);
DEFINE_EVENT(hda_cmd, hda_send_cmd,
TP_PROTO(struct hda_codec *codec, unsigned int val),
TP_ARGS(codec, val)
);
DEFINE_EVENT(hda_cmd, hda_get_response,
TP_PROTO(struct hda_codec *codec, unsigned int val),
TP_ARGS(codec, val)
);
TRACE_EVENT(hda_bus_reset,
TP_PROTO(struct hda_bus *bus),
TP_ARGS(bus),
TP_STRUCT__entry(
__field( unsigned int, card )
),
TP_fast_assign(
__entry->card = (bus)->card->number;
),
TP_printk("[%d]", __entry->card)
);
DECLARE_EVENT_CLASS(hda_power,
TP_PROTO(struct hda_codec *codec),
TP_ARGS(codec),
TP_STRUCT__entry(
__field( unsigned int, card )
__field( unsigned int, addr )
),
TP_fast_assign(
__entry->card = (codec)->bus->card->number;
__entry->addr = (codec)->addr;
),
TP_printk("[%d:%d]", __entry->card, __entry->addr)
);
DEFINE_EVENT(hda_power, hda_power_down,
TP_PROTO(struct hda_codec *codec),
TP_ARGS(codec)
);
DEFINE_EVENT(hda_power, hda_power_up,
TP_PROTO(struct hda_codec *codec),
TP_ARGS(codec)
);
#endif /* _TRACE_HDA_H */
/* This part must be outside protection */
#undef TRACE_INCLUDE_PATH
#define TRACE_INCLUDE_PATH .
#include <trace/define_trace.h>