K 10
svn:author
V 5
markj
K 8
svn:date
V 27
2018-05-06T00:22:38.637767Z
K 7
svn:log
V 438
Refactor some of the MI kernel dump code in preparation for netdump.

- Add clear_dumper() to complement set_dumper().
- Drain netdump's preallocated mbuf pool when clearing the dumper.
- Don't do bounds checking for dumpers with mediasize 0.
- Add dumper callbacks for initialization for writing out headers.

Reviewed by:	sbruno
MFC after:	1 month
Sponsored by:	Dell EMC Isilon
Differential Revision:	https://reviews.freebsd.org/D15252

END