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authorIngo Molnar <mingo@elte.hu>2009-08-25 10:04:27 +0200
committerIngo Molnar <mingo@elte.hu>2009-08-25 10:04:32 +0200
commitdaedc71836e5a398fd0cc0e12c5cb43539478485 (patch)
treec56567a92017679e57195cef992d4a5561c20e0e /Documentation/sound/alsa
parentc36ba80ea01d0aecb652c26799a912e760ce8981 (diff)
parent422bef879e84104fee6dc68ded0e371dbeb5f88e (diff)
Merge commit 'v2.6.31-rc7' into irq/core
Merge reason: move from an -rc2 base to -rc7. Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'Documentation/sound/alsa')
-rw-r--r--Documentation/sound/alsa/Procfile.txt5
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.