As the mda driver is currently a module, I'd like to keep it that way, but I
have a few doubts about registering the new console from a module.
Looking at the implementation of register_console in kernel/printk.c, I
see that the new console would be added at the head of the linked list.
Can I happily add an unregister_console function, to cut the new console
entry out of the linked list when the module is unloaded?
As these functions could then be called at any time, I suppose I would
need to protect the linked list with a spinlock to prevent concurrent
modifications, which could leave the linked list corrupted. What routines are
offered by the kernel for this? (2.1.37)
I did think about the possibility of adding a routine to allow dynamic setting
of consoles via a file in /proc, e.g. echo "add /dev/mono" >/proc/consoles to
do it, but this wouldn't be so simple, would it? Maybe it could be done if we
only allow character devices to be used?
Any ideas / suggestions?
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David Woodhouse, WWW: http://www.imladris.ml.org
Robinson College, Email: Dave@imladris.ml.org
Cambridge, Tel: +44 (0) 976 658355
CB3 9AN, (n)talk: dwmw2@imladris.ml.org
England. PGP KEY: finger pgp@imladris.ml.org
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