From 54a3b8dc38d47834336400cbe376a3aca0437cae Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Thu, 8 Jul 2010 09:01:17 +0200 Subject: ALSA: Update documents about new bits of xrun_debug proc file Signed-off-by: Takashi Iwai --- Documentation/sound/alsa/Procfile.txt | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'Documentation/sound') diff --git a/Documentation/sound/alsa/Procfile.txt b/Documentation/sound/alsa/Procfile.txt index 07301de12cc4..7fcd1ad96fcc 100644 --- a/Documentation/sound/alsa/Procfile.txt +++ b/Documentation/sound/alsa/Procfile.txt @@ -103,6 +103,8 @@ card*/pcm*/xrun_debug bit 2 = Enable additional jiffies check bit 3 = Log hwptr update at each period interrupt bit 4 = Log hwptr update at each snd_pcm_update_hw_ptr() + bit 5 = Show last 10 positions on error + bit 6 = Do above only once When the bit 0 is set, the driver will show the messages to kernel log when an xrun is detected. The debug message is @@ -122,6 +124,12 @@ card*/pcm*/xrun_debug Bits 3 and 4 are for logging the hwptr records. Note that these will give flood of kernel messages. + When bit 5 is set, the driver logs the last 10 xrun errors and + the proc file shows each jiffies, position, period_size, + buffer_size, old_hw_ptr, and hw_ptr_base values. + + When bit 6 is set, the full xrun log is shown only once. + card*/pcm*/sub*/info The general information of this PCM sub-stream. -- cgit v1.2.1