On Wed, 2007-08-22 at 11:03 -0700, Jerry Gilliam wrote:
> A more complete autopsy here is that pre-devfs, solaris relied on
> bottom-up full attach, for all intents and purposes a reconfiguration
> boot, to implement open-by-devid.
>
> Devfs itself did not fix this, so open-by-devid still required
> full attach. The devid cache eliminated that so that with a
> cache hit, an open-by-devid goes directly to the device.
would it be plausible to persistently record (separately from the devid
cache) which drivers have emitted at least one devid and thus
automatically maintain the list of drivers that must be visited on a
devid cache miss?
- Bill
