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[PATCH] IPMI: Allow hot system interface remove

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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 <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Corey Minyard 2006-12-06 20:41:00 -08:00 • committed by Linus Torvalds
commit b2c03941b5
4 changed files with 304 additions and 132 deletions
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9
Documentation/IPMI.txt
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@ -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.