Messages in this thread | | | Date | Tue, 27 Apr 1999 12:48:53 +0200 | From | Martin Mares <> | Subject | Re: sysrq on serial consoles [was The Deadly `ping -f'] |
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Hello!
> The original question was how to enter sysrq from a serial console. > AFAICT, the only way of entering alt-sysrq is directly from a PC > keyboard, I can see no way of doing it from a serial console. Proc > handle_sysrq is only called from handle_scancode in keyboard.c. Serial > consoles do not have scancodes. > > So a question for the serial experts. How do you enter alt-sysrq on a > serial console? Expecially if that console could be a dumb VT100 or an > emulator running on Linux or even another OS entirely?
Some time ago, I wrote a patch for SysRq over serial console which used BREAK as a SysRq key. Unfortunately, Linus has rejected it because of the feature freeze, but I can dig it out and port to 2.2.x.
Have a nice fortnight -- Martin `MJ' Mares <mj@ucw.cz> http://atrey.karlin.mff.cuni.cz/~mj/ Faculty of Math and Physics, Charles University, Prague, Czech Rep., Earth "REALITY.SYS corrupted - reboot Universe (Y/N)?"
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