The following patch is a reworked patch which originated from Amazon.
It makes the sysrq key stateful, giving it the following behaviours:
A) If the magic key is pressed and held, every other key pressed will be
handled by the sysrq system. (This is the current behaviour).
B) If the magic key is pressed and released, the next key pressed will
be handled by the sysrq system.
C) If the magic key is pressed twice in series, it is passed through.
In addition, the patch allows registraiton of the the keycode which the
magic key lives on, through a proc entry.
This patch was developed to handle crappy KVM-alikes, which did one key
at a time, and had no SysRq key. However, it gives a good solution to a
common problem. Many keyboards are made cheaply, and do not support
having large numbers of keys pressed simultaneously, making the current
SysRq code almost useless on them.
There are two versions of the patch attached. One is for
linux-2.4.11-pre2, the other is for linux-2.4.10-ac3
--
Crutcher <crutcher@datastacks.com>
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This archive was generated by hypermail 2b29 : Sun Oct 07 2001 - 21:00:17 EST