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authorCorey Minyard <minyard@acm.org>2006-12-06 20:41:00 -0800
committerLinus Torvalds <torvalds@woody.osdl.org>2006-12-07 08:39:47 -0800
commitb2c03941b50944a268ee4d5823872f220809a3ba (patch)
tree9ade96c649031f1eaf20587a2fdf855fe0118f4c /Documentation/IPMI.txt
parent759643b874907e76ae81e34df62f41ab6683f5c2 (diff)
downloadlinux-b2c03941b50944a268ee4d5823872f220809a3ba.tar.gz
[PATCH] IPMI: Allow hot system interface remove
This modifies the IPMI driver so that a lower-level interface can be dynamically removed while in use so it can support hot-removal of hardware. It also adds the ability to specify and dynamically change the IPMI interface the watchdog timer and the poweroff code use. Signed-off-by: Corey Minyard <minyard@acm.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'Documentation/IPMI.txt')
-rw-r--r--Documentation/IPMI.txt9
1 files changed, 8 insertions, 1 deletions
diff --git a/Documentation/IPMI.txt b/Documentation/IPMI.txt
index 0e3924ecd76..9101cbf2d88 100644
--- a/Documentation/IPMI.txt
+++ b/Documentation/IPMI.txt
@@ -502,7 +502,10 @@ used to control it:
modprobe ipmi_watchdog timeout=<t> pretimeout=<t> action=<action type>
preaction=<preaction type> preop=<preop type> start_now=x
- nowayout=x
+ nowayout=x ifnum_to_use=n
+
+ifnum_to_use specifies which interface the watchdog timer should use.
+The default is -1, which means to pick the first one registered.
The timeout is the number of seconds to the action, and the pretimeout
is the amount of seconds before the reset that the pre-timeout panic will
@@ -624,5 +627,9 @@ command line. The parameter is also available via the proc filesystem
in /proc/sys/dev/ipmi/poweroff_powercycle. Note that if the system
does not support power cycling, it will always do the power off.
+The "ifnum_to_use" parameter specifies which interface the poweroff
+code should use. The default is -1, which means to pick the first one
+registered.
+
Note that if you have ACPI enabled, the system will prefer using ACPI to
power off.