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authorLinus Torvalds <torvalds@linux-foundation.org>2008-10-11 08:50:01 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-10-11 08:50:01 -0700
commit37d9869ed928268409b48f52c57449918c0fd307 (patch)
tree7dd954260d723d1e0716b6432ba07b5c7be7f2ac /Documentation
parent098ef215b1e87cff51f983bae4e4e1358b932ec9 (diff)
parent89d49841e9e7a90b04b036b7dbe7521b55edbe24 (diff)
Merge branch 'for-linus' of git://git390.osdl.marist.edu/pub/scm/linux-2.6
* 'for-linus' of git://git390.osdl.marist.edu/pub/scm/linux-2.6: (27 commits) [S390] Fix checkstack for s390 [S390] fix initialization of stp [S390] 3215: Remove tasklet. [S390] console flush on panic / reboot [S390] introduce dirty bit for kvm live migration [S390] Add ioctl support for EMC Symmetrix Subsystem Control I/O [S390] xpram: per device block request queues. [S390] dasd: fix message flood for unsolicited interrupts [S390] Move private simple udelay function to arch/s390/lib/delay.c. [S390] dcssblk: add >2G DCSSs support and stacked contiguous DCSSs support. [S390] ptrace changes [S390] s390: use sys_pause for 31bit pause entry point [S390] qdio enhanced SIGA (iqdio) support. [S390] cio: fix cio_tpi. [S390] cio: Correct use of ! and & [S390] cio: inline assembly cleanup [S390] bus_id -> dev_set_name() for css and ccw busses [S390] bus_id ->dev_name() conversions in qdio [S390] Use s390_root_dev_* in kvm_virtio. [S390] more bus_id -> dev_name conversions ...
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/s390/CommonIO11
1 files changed, 8 insertions, 3 deletions
diff --git a/Documentation/s390/CommonIO b/Documentation/s390/CommonIO
index bf0baa19ec2..339207d11d9 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.
@@ -98,8 +104,7 @@ debugfs entries
handling).
- /sys/kernel/debug/s390dbf/cio_msg/sprintf
- Various debug messages from the common I/O-layer, including messages
- printed when cio_msg=yes.
+ Various debug messages from the common I/O-layer.
- /sys/kernel/debug/s390dbf/cio_trace/hex_ascii
Logs the calling of functions in the common I/O-layer and, if applicable,