K 10
svn:author
V 3
imp
K 8
svn:date
V 27
2002-11-30T00:49:43.000000Z
K 7
svn:log
V 460
devd kernel improvements:
1) Record all device events when devctl is enabled, rather than just when
   devd has devctl open.  This is necessary to prevent races between when
   a device arrives, and when devd starts.
2) Add hw.bus.devctl_disable to disable devctl, this can also be set as a
   tunable.
3) Fix async support. Reset nonblocking and async_td in open.  remove
   async flags.
4) Free all memory when devctl is disabled.

Approved by: re (blanket)

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