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| author | Takashi Iwai <tiwai@suse.de> | 2010-08-05 11:17:04 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2010-08-05 11:17:04 +0200 |
| commit | 74bf40f0793fed9e01eb6164c2ce63e8c27ca205 (patch) | |
| tree | f41312c0943978842ac258873b29da04d72d0625 /Documentation/sound/alsa/Procfile.txt | |
| parent | Merge branch 'topic/asoc' into for-linus (diff) | |
| parent | ALSA: als4000: Fix potentially invalid DMA mode setup (diff) | |
| download | linux-74bf40f0793fed9e01eb6164c2ce63e8c27ca205.tar.xz linux-74bf40f0793fed9e01eb6164c2ce63e8c27ca205.zip | |
Merge branch 'topic/misc' into for-linus
Diffstat (limited to 'Documentation/sound/alsa/Procfile.txt')
| -rw-r--r-- | Documentation/sound/alsa/Procfile.txt | 8 |
1 files changed, 8 insertions, 0 deletions
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. |