tree f6478bcdc30d84cc6f67485bd78c9ba54827e07e
parent ceb3dfbae1d3faacaedfc64c913fd18cd3624f72
author Michael Holzheu <holzheu@de.ibm.com> 1201353071 +0100
committer Martin Schwidefsky <schwidefsky@de.ibm.com> 1201353079 +0100

[S390] kernel: Shutdown Actions Interface

In case of a kernel panic it is currently possible to specify that a dump
should be created, the system should be rebooted or stopped. Virtual sysfs
files under the directory /sys/firmware/ are used for that configuration.
In addition to that, there are kernel parameters 'vmhalt', 'vmpoff'
and 'vmpanic', which can be used to specify z/VM commands, which are
automatically executed in case of halt, power off or a kernel panic.
This patch combines both functionalities and allows to specify the z/VM CP
commands also via sysfs attributes. In addition to that, it enhances the
existing handling of shutdown triggers (e.g. halt or panic) and associated
shutdown actions (e.g. dump or reipl) and makes it more flexible.

Signed-off-by: Michael Holzheu <holzheu@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>