ALSA: hda - Add tracepoints to HD-audio controller driver
Add a couple of tracepoints to snd-hda-intel for tracing the position
and the trigger timings.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/pci/hda/Makefile b/sound/pci/hda/Makefile
index bd4149f..24a2514 100644
--- a/sound/pci/hda/Makefile
+++ b/sound/pci/hda/Makefile
@@ -8,6 +8,7 @@
# for trace-points
CFLAGS_hda_codec.o := -I$(src)
+CFLAGS_hda_intel.o := -I$(src)
snd-hda-codec-realtek-objs := patch_realtek.o
snd-hda-codec-cmedia-objs := patch_cmedia.o
diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c
index d96a14e..d7481f0 100644
--- a/sound/pci/hda/hda_intel.c
+++ b/sound/pci/hda/hda_intel.c
@@ -527,6 +527,9 @@
struct list_head list;
};
+#define CREATE_TRACE_POINTS
+#include "hda_intel_trace.h"
+
/* driver types */
enum {
AZX_DRIVER_ICH,
@@ -2059,6 +2062,9 @@
int rstart = 0, start, nsync = 0, sbits = 0;
int nwait, timeout;
+ azx_dev = get_azx_dev(substream);
+ trace_azx_pcm_trigger(chip, azx_dev, cmd);
+
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
rstart = 1;
@@ -2231,6 +2237,7 @@
{
unsigned int pos;
int stream = azx_dev->substream->stream;
+ int delay = 0;
switch (chip->position_fix[stream]) {
case POS_FIX_LPIB:
@@ -2264,7 +2271,6 @@
chip->position_fix[stream] == POS_FIX_POSBUF &&
(chip->driver_caps & AZX_DCAPS_COUNT_LPIB_DELAY)) {
unsigned int lpib_pos = azx_sd_readl(azx_dev, SD_LPIB);
- int delay;
if (stream == SNDRV_PCM_STREAM_PLAYBACK)
delay = pos - lpib_pos;
else
@@ -2279,6 +2285,7 @@
azx_dev->substream->runtime->delay =
bytes_to_frames(azx_dev->substream->runtime, delay);
}
+ trace_azx_get_position(chip, azx_dev, pos, delay);
return pos;
}
diff --git a/sound/pci/hda/hda_intel_trace.h b/sound/pci/hda/hda_intel_trace.h
new file mode 100644
index 0000000..7b5e4c2
--- /dev/null
+++ b/sound/pci/hda/hda_intel_trace.h
@@ -0,0 +1,62 @@
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM hda_intel
+#define TRACE_INCLUDE_FILE hda_intel_trace
+
+#if !defined(_TRACE_HDA_INTEL_H) || defined(TRACE_HEADER_MULTI_READ)
+#define _TRACE_HDA_INTEL_H
+
+#include <linux/tracepoint.h>
+
+struct azx;
+struct azx_dev;
+
+TRACE_EVENT(azx_pcm_trigger,
+
+ TP_PROTO(struct azx *chip, struct azx_dev *dev, int cmd),
+
+ TP_ARGS(chip, dev, cmd),
+
+ TP_STRUCT__entry(
+ __field( int, card )
+ __field( int, idx )
+ __field( int, cmd )
+ ),
+
+ TP_fast_assign(
+ __entry->card = (chip)->card->number;
+ __entry->idx = (dev)->index;
+ __entry->cmd = cmd;
+ ),
+
+ TP_printk("[%d:%d] cmd=%d", __entry->card, __entry->idx, __entry->cmd)
+);
+
+TRACE_EVENT(azx_get_position,
+
+ TP_PROTO(struct azx *chip, struct azx_dev *dev, unsigned int pos, unsigned int delay),
+
+ TP_ARGS(chip, dev, pos, delay),
+
+ TP_STRUCT__entry(
+ __field( int, card )
+ __field( int, idx )
+ __field( unsigned int, pos )
+ __field( unsigned int, delay )
+ ),
+
+ TP_fast_assign(
+ __entry->card = (chip)->card->number;
+ __entry->idx = (dev)->index;
+ __entry->pos = pos;
+ __entry->delay = delay;
+ ),
+
+ TP_printk("[%d:%d] pos=%u, delay=%u", __entry->card, __entry->idx, __entry->pos, __entry->delay)
+);
+
+#endif /* _TRACE_HDA_INTEL_H */
+
+/* This part must be outside protection */
+#undef TRACE_INCLUDE_PATH
+#define TRACE_INCLUDE_PATH .
+#include <trace/define_trace.h>