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| author | Takashi Iwai <tiwai@suse.de> | 2009-07-26 11:07:07 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2009-07-26 11:07:07 +0200 |
| commit | b88158846f36374553a5915b7cb5a86540cf9762 (patch) | |
| tree | ddcfc36eadda7b9d67b60b7c6bce10cf8b7abc38 /Documentation | |
| parent | de5d674c0220e3adc84fb05d0e8e2793ffc094d8 (diff) | |
| parent | 947ca210f1df7656e19890832cb71fc3bdd88707 (diff) | |
Merge branch 'fix/pcm-hwptr' into for-linus
* fix/pcm-hwptr:
ALSA: pcm - Fix hwptr buffer-size overlap bug
ALSA: pcm - Fix warnings in debug loggings
ALSA: pcm - Add logging of hwptr updates and interrupt updates
ALSA: pcm - Fix regressions with VMware
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/sound/alsa/Procfile.txt | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/Documentation/sound/alsa/Procfile.txt b/Documentation/sound/alsa/Procfile.txt index 381908d8ca4..719a819f8cc 100644 --- a/Documentation/sound/alsa/Procfile.txt +++ b/Documentation/sound/alsa/Procfile.txt @@ -101,6 +101,8 @@ card*/pcm*/xrun_debug bit 0 = Enable XRUN/jiffies debug messages bit 1 = Show stack trace at XRUN / jiffies check 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() When the bit 0 is set, the driver will show the messages to kernel log when an xrun is detected. The debug message is @@ -117,6 +119,9 @@ card*/pcm*/xrun_debug buggy) hardware that doesn't give smooth pointer updates. This feature is enabled via the bit 2. + Bits 3 and 4 are for logging the hwptr records. Note that + these will give flood of kernel messages. + card*/pcm*/sub*/info The general information of this PCM sub-stream. |