Devices related notifications from kernel to userspace

Hasso Tepper hasso at
Fri Dec 28 01:50:55 PST 2007

Thomas E. Spanjaard wrote:
> Hasso Tepper wrote:
> > Brief look at devctl/devd code raised one question already which is
> > beyond my current knowledge - it uses condvar(9) we don't have in the
> > kernel. Any recommendations how to handle this in porting?
> Spinlocks, msleep, tokens, etc?

Yeah, I know, but ... I hoped that maybe someone has recommendations in 
style "you can use that in this way" ;). At the moment I don't even 
understand how condvar(9) behaves. FreeBSD manpage isn't very helpful 
IMHO (at least for me ;).


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