diff --git a/include/sound/pcm.h b/include/sound/pcm.h index ac8f3aef9205..384032b6c59c 100644 --- a/include/sound/pcm.h +++ b/include/sound/pcm.h @@ -498,6 +498,9 @@ struct snd_pcm_substream { /* misc flags */ unsigned int hw_opened: 1; unsigned int managed_buffer_alloc:1; +#ifdef CONFIG_SND_PCM_XRUN_DEBUG + unsigned int xrun_counter; /* number of times xrun happens */ +#endif /* CONFIG_SND_PCM_XRUN_DEBUG */ }; #define SUBSTREAM_BUSY(substream) ((substream)->ref_count > 0) diff --git a/sound/core/pcm.c b/sound/core/pcm.c index dc37f3508dc7..290690fc2abc 100644 --- a/sound/core/pcm.c +++ b/sound/core/pcm.c @@ -462,6 +462,9 @@ static void snd_pcm_substream_proc_status_read(struct snd_info_entry *entry, snd_iprintf(buffer, "-----\n"); snd_iprintf(buffer, "hw_ptr : %ld\n", runtime->status->hw_ptr); snd_iprintf(buffer, "appl_ptr : %ld\n", runtime->control->appl_ptr); +#ifdef CONFIG_SND_PCM_XRUN_DEBUG + snd_iprintf(buffer, "xrun_counter: %d\n", substream->xrun_counter); +#endif } #ifdef CONFIG_SND_PCM_XRUN_DEBUG @@ -970,6 +973,9 @@ int snd_pcm_attach_substream(struct snd_pcm *pcm, int stream, substream->pid = get_pid(task_pid(current)); pstr->substream_opened++; *rsubstream = substream; +#ifdef CONFIG_SND_PCM_XRUN_DEBUG + substream->xrun_counter = 0; +#endif /* CONFIG_SND_PCM_XRUN_DEBUG */ return 0; } diff --git a/sound/core/pcm_lib.c b/sound/core/pcm_lib.c index 6e7905749c4a..6eaa950504cf 100644 --- a/sound/core/pcm_lib.c +++ b/sound/core/pcm_lib.c @@ -184,6 +184,9 @@ void __snd_pcm_xrun(struct snd_pcm_substream *substream) pcm_warn(substream->pcm, "XRUN: %s\n", name); dump_stack_on_xrun(substream); } +#ifdef CONFIG_SND_PCM_XRUN_DEBUG + substream->xrun_counter++; +#endif } #ifdef CONFIG_SND_PCM_XRUN_DEBUG