dev_lock() question

[John Baldwin]

On Thursday 29 September 2005 02:14 pm, Poul-Henning Kamp wrote:
> In message <200509291408.18098.jhb at FreeBSD.org>, John Baldwin writes:
> >Actually, you would think that it could be initialized either via an early
> >SYSINIT() or in the init_mutexes() function in kern_mutex.c and thus not
> > need the early check and avoid penalizing dev_lock().
> >
> >phk, how early his dev_lock needed?
>
> Far too early due to console madness (in syscons I belive).

So would mutex_init() work?  It's called very early in the MD startup code 
right after things like curthread are initialized.  If dev_lock() is called 
before mutex_init() it can't work right anyway as mtx_init() doesn't work 
until then.

-- 
John Baldwin <jhb at FreeBSD.org>  <><  http://www.FreeBSD.org/~jhb/
"Power Users Use the Power to Serve"  =  http://www.FreeBSD.org