Add debug prints after calls of do_alloc_pages. One simplification would
be to move print into do_alloc_pages, however it would cause spam in
logs, as preallocate_pcm_pages loops over do_alloc_pages trying lower
values in case of failures.
Signed-off-by: Amadeusz Sławiński <amadeuszx.slawinski@xxxxxxxxxxxxxxx>
---
sound/core/pcm_memory.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/sound/core/pcm_memory.c b/sound/core/pcm_memory.c
index 289dd1fd8fe7..2878c4c23583 100644
--- a/sound/core/pcm_memory.c
+++ b/sound/core/pcm_memory.c
@@ -176,6 +176,10 @@ static void snd_pcm_lib_preallocate_proc_write(struct snd_info_entry *entry,
substream->dma_buffer.dev.dev,
size, &new_dmab) < 0) {
buffer->error = -ENOMEM;
+ pr_debug("ALSA pcmC%dD%d%c,%d:%s: cannot preallocate for size %zu\n",
+ substream->pcm->card->number, substream->pcm->device,
+ substream->stream ? 'c' : 'p', substream->number,
+ substream->pcm->name, size);
return;
}
substream->buffer_bytes_max = size;
@@ -400,6 +404,10 @@ int snd_pcm_lib_malloc_pages(struct snd_pcm_substream *substream, size_t size)
substream->dma_buffer.dev.dev,
size, dmab) < 0) {
kfree(dmab);
+ pr_debug("ALSA pcmC%dD%d%c,%d:%s: cannot preallocate for size %zu\n",
+ substream->pcm->card->number, substream->pcm->device,
+ substream->stream ? 'c' : 'p', substream->number,
+ substream->pcm->name, size);
return -ENOMEM;
}
}
--
2.25.1
