diff options
| -rw-r--r-- | include/sound/pcm.h | 1 | ||||
| -rw-r--r-- | sound/core/pcm_memory.c | 23 |
2 files changed, 24 insertions, 0 deletions
diff --git a/include/sound/pcm.h b/include/sound/pcm.h index 016c41893b06..ec006ed8cd59 100644 --- a/include/sound/pcm.h +++ b/include/sound/pcm.h @@ -384,6 +384,7 @@ struct snd_pcm_substream { struct snd_info_entry *proc_sw_params_entry; struct snd_info_entry *proc_status_entry; struct snd_info_entry *proc_prealloc_entry; + struct snd_info_entry *proc_prealloc_max_entry; #endif /* misc flags */ unsigned int hw_opened: 1; diff --git a/sound/core/pcm_memory.c b/sound/core/pcm_memory.c index be030cb4d373..95b1b2f0b1e2 100644 --- a/sound/core/pcm_memory.c +++ b/sound/core/pcm_memory.c @@ -101,6 +101,8 @@ int snd_pcm_lib_preallocate_free(struct snd_pcm_substream *substream) { snd_pcm_lib_preallocate_dma_free(substream); #ifdef CONFIG_SND_VERBOSE_PROCFS + snd_info_free_entry(substream->proc_prealloc_max_entry); + substream->proc_prealloc_max_entry = NULL; snd_info_free_entry(substream->proc_prealloc_entry); substream->proc_prealloc_entry = NULL; #endif @@ -142,6 +144,18 @@ static void snd_pcm_lib_preallocate_proc_read(struct snd_info_entry *entry, } /* + * read callback for prealloc_max proc file + * + * prints the maximum allowed size in kB. + */ +static void snd_pcm_lib_preallocate_max_proc_read(struct snd_info_entry *entry, + struct snd_info_buffer *buffer) +{ + struct snd_pcm_substream *substream = entry->private_data; + snd_iprintf(buffer, "%lu\n", (unsigned long) substream->dma_max / 1024); +} + +/* * write callback for prealloc proc file * * accepts the preallocation size in kB. @@ -203,6 +217,15 @@ static inline void preallocate_info_init(struct snd_pcm_substream *substream) } } substream->proc_prealloc_entry = entry; + if ((entry = snd_info_create_card_entry(substream->pcm->card, "prealloc_max", substream->proc_root)) != NULL) { + entry->c.text.read = snd_pcm_lib_preallocate_max_proc_read; + entry->private_data = substream; + if (snd_info_register(entry) < 0) { + snd_info_free_entry(entry); + entry = NULL; + } + } + substream->proc_prealloc_max_entry = entry; } #else /* !CONFIG_SND_VERBOSE_PROCFS */ |