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authorTakashi Iwai <tiwai@suse.de>2009-07-23 11:04:13 +0200
committerTakashi Iwai <tiwai@suse.de>2009-07-23 11:09:03 +0200
commitcedb8118e8cef21a2b73fd9cb70660ac19124c16 (patch)
tree080bc68c721b8ed24ebff7c809b7e74f6959148f /sound/core
parent79452f0a28aa5a40522c487b42a5fc423647ad98 (diff)
downloadlinux-cedb8118e8cef21a2b73fd9cb70660ac19124c16.tar.bz2
ALSA: pcm - Add logging of hwptr updates and interrupt updates
Added the logging functionality to xrun_debug to record the hwptr updates via snd_pcm_update_hw_ptr() and snd_pcm_update_hwptr_interrupt(), corresponding to 16 and 8, respectively. For example, # echo 9 > /proc/asound/card0/pcm0p/xrun_debug will record the position and other parameters at each period interrupt together with the normal XRUN debugging. Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/core')
-rw-r--r--sound/core/pcm_lib.c25
1 files changed, 25 insertions, 0 deletions
diff --git a/sound/core/pcm_lib.c b/sound/core/pcm_lib.c
index 3b673e2f991d..065eaf0a386c 100644
--- a/sound/core/pcm_lib.c
+++ b/sound/core/pcm_lib.c
@@ -233,6 +233,18 @@ static int snd_pcm_update_hw_ptr_interrupt(struct snd_pcm_substream *substream)
xrun(substream);
return -EPIPE;
}
+ if (xrun_debug(substream, 8)) {
+ char name[16];
+ pcm_debug_name(substream, name, sizeof(name));
+ snd_printd("period_update: %s: pos=0x%x/0x%x/0x%x, "
+ "hwptr=0x%lx, hw_base=0x%lx, hw_intr=0x%lx\n",
+ name, pos,
+ (int)runtime->period_size,
+ (int)runtime->buffer_size,
+ (long)old_hw_ptr,
+ (long)runtime->hw_ptr_base,
+ (long)runtime->hw_ptr_interrupt);
+ }
hw_base = runtime->hw_ptr_base;
new_hw_ptr = hw_base + pos;
hw_ptr_interrupt = runtime->hw_ptr_interrupt + runtime->period_size;
@@ -353,6 +365,19 @@ int snd_pcm_update_hw_ptr(struct snd_pcm_substream *substream)
xrun(substream);
return -EPIPE;
}
+ if (xrun_debug(substream, 16)) {
+ char name[16];
+ pcm_debug_name(substream, name, sizeof(name));
+ snd_printd("hw_update: %s: pos=0x%x/0x%x/0x%x, "
+ "hwptr=0x%lx, hw_base=0x%lx, hw_intr=0x%lx\n",
+ name, pos,
+ (int)runtime->period_size,
+ (int)runtime->buffer_size,
+ (long)old_hw_ptr,
+ (long)runtime->hw_ptr_base,
+ (long)runtime->hw_ptr_interrupt);
+ }
+
hw_base = runtime->hw_ptr_base;
new_hw_ptr = hw_base + pos;