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authorCornelia Huck <cornelia.huck@de.ibm.com>2008-10-10 21:33:07 +0200
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2008-10-10 21:33:48 +0200
commitd45387d8bce2674fd21369a394933a02b8125878 (patch)
tree3ec12c8fae9cbcc799cd356b80d021676a1753a0 /Documentation/s390/CommonIO
parentecf5d9ef68b868b293b40b89615a92de7310d065 (diff)
downloadlinux-linaro-stable-d45387d8bce2674fd21369a394933a02b8125878.tar.gz
[S390] cio: Update cio_ignore documentation.
Add documentation for the new "purge" cio_ignore parameter. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'Documentation/s390/CommonIO')
-rw-r--r--Documentation/s390/CommonIO8
1 files changed, 7 insertions, 1 deletions
diff --git a/Documentation/s390/CommonIO b/Documentation/s390/CommonIO
index bf0baa19ec24..428e5c859b69 100644
--- a/Documentation/s390/CommonIO
+++ b/Documentation/s390/CommonIO
@@ -70,13 +70,19 @@ Command line parameters
Note: While already known devices can be added to the list of devices to be
ignored, there will be no effect on then. However, if such a device
- disappears and then reappears, it will then be ignored.
+ disappears and then reappears, it will then be ignored. To make
+ known devices go away, you need the "purge" command (see below).
For example,
"echo add 0.0.a000-0.0.accc, 0.0.af00-0.0.afff > /proc/cio_ignore"
will add 0.0.a000-0.0.accc and 0.0.af00-0.0.afff to the list of ignored
devices.
+ You can remove already known but now ignored devices via
+ "echo purge > /proc/cio_ignore"
+ All devices ignored but still registered and not online (= not in use)
+ will be deregistered and thus removed from the system.
+
The devices can be specified either by bus id (0.x.abcd) or, for 2.4 backward
compatibility, by the device number in hexadecimal (0xabcd or abcd). Device
numbers given as 0xabcd will be interpreted as 0.0.abcd.