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-rw-r--r--Documentation/s390/CommonIO5
1 files changed, 5 insertions, 0 deletions
diff --git a/Documentation/s390/CommonIO b/Documentation/s390/CommonIO
index 86320aa3fb0b..8fbc0a852870 100644
--- a/Documentation/s390/CommonIO
+++ b/Documentation/s390/CommonIO
@@ -4,6 +4,11 @@ S/390 common I/O-Layer - command line parameters, procfs and debugfs entries
Command line parameters
-----------------------
+* ccw_timeout_log
+
+ Enable logging of debug information in case of ccw device timeouts.
+
+
* cio_msg = yes | no
Determines whether information on found devices and sensed device

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