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ALSA: pcm: trace XRUN event at injection, too

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The PCM xrun injection triggers directly snd_pcm_stop() without the
standard xrun handler, hence it's not recorded on the event buffer.
Ditto for snd_pcm_stop_xrun() call and SNDRV_PCM_IOCTL_XRUN ioctl.
They are inconvenient from the debugging POV.

Let's make them to trigger XRUN via the standard helper more
consistently.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2018-07-04 14:46:27 +02:00
parent 51d7d35817
commit 9cd641ed31
4 changed files with 11 additions and 8 deletions
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2
sound/core/pcm.c
View file

@ -497,7 +497,7 @@ static void snd_pcm_xrun_injection_write(struct snd_info_entry *entry,
snd_pcm_stream_lock_irq(substream);
runtime = substream->runtime;
if (runtime && runtime->status->state == SNDRV_PCM_STATE_RUNNING)
snd_pcm_stop(substream, SNDRV_PCM_STATE_XRUN);
__snd_pcm_xrun(substream);
snd_pcm_stream_unlock_irq(substream);
}

7
sound/core/pcm_lib.c
View file

@ -153,7 +153,8 @@ EXPORT_SYMBOL(snd_pcm_debug_name);
dump_stack(); \
} while (0)
static void xrun(struct snd_pcm_substream *substream)
/* call with stream lock held */
void __snd_pcm_xrun(struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
@ -201,7 +202,7 @@ int snd_pcm_update_state(struct snd_pcm_substream *substream,
}
} else {
if (avail >= runtime->stop_threshold) {
xrun(substream);
__snd_pcm_xrun(substream);
return -EPIPE;
}
}
@ -297,7 +298,7 @@ static int snd_pcm_update_hw_ptr0(struct snd_pcm_substream *substream,
}
if (pos == SNDRV_PCM_POS_XRUN) {
xrun(substream);
__snd_pcm_xrun(substream);
return -EPIPE;
}
if (pos >= runtime->buffer_size) {

2
sound/core/pcm_local.h
View file

@ -65,4 +65,6 @@ static inline void snd_pcm_timer_init(struct snd_pcm_substream *substream) {}
static inline void snd_pcm_timer_done(struct snd_pcm_substream *substream) {}
#endif
void __snd_pcm_xrun(struct snd_pcm_substream *substream);
#endif /* __SOUND_CORE_PCM_LOCAL_H */

8
sound/core/pcm_native.c
View file

@ -1337,13 +1337,12 @@ int snd_pcm_drain_done(struct snd_pcm_substream *substream)
int snd_pcm_stop_xrun(struct snd_pcm_substream *substream)
{
unsigned long flags;
int ret = 0;
snd_pcm_stream_lock_irqsave(substream, flags);
if (snd_pcm_running(substream))
ret = snd_pcm_stop(substream, SNDRV_PCM_STATE_XRUN);
__snd_pcm_xrun(substream);
snd_pcm_stream_unlock_irqrestore(substream, flags);
return ret;
return 0;
}
EXPORT_SYMBOL_GPL(snd_pcm_stop_xrun);
@ -1591,7 +1590,8 @@ static int snd_pcm_xrun(struct snd_pcm_substream *substream)
result = 0; /* already there */
break;
case SNDRV_PCM_STATE_RUNNING:
result = snd_pcm_stop(substream, SNDRV_PCM_STATE_XRUN);
__snd_pcm_xrun(substream);
result = 0;
break;
default:
result = -EBADFD;