Question about linux drivers

Svein Erling Seldal (sveinse@invalid.ed.ntnu.no)
Tue, 10 Nov 1998 16:59:21 +0100


I'm doing some development on a linux device driver for an embedded
DSP card (non properitarian/non-profit), via. the parport. I'm
targetting this development against 2.0.x, and I have some question
regarding this:

1. Is there any centralized "organ" to coordinate and assign official
major numbers? If yes, what is the criteria to register? If no, should
I distribute with a development major number?

2. Ditto, but applying to ioctl magic numbers?

3. Since only one process runs while executing in the kernel, all
other processes "hangs". How long is it reccomended/acceptable to
"hold" the kernel before schedule() is/must be called? 1*HZ?

Regards,
Svein Erling Seldal

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