K 10
svn:author
V 3
gnn
K 8
svn:date
V 27
2012-12-07T19:06:40.696273Z
K 7
svn:log
V 539
MFC: 238366, 240924

Initial commit of an I/O provider for DTrace on FreeBSD.

 These probes are most useful when looking into the structures
 they provide, which are listed in io.d.  For example:

 dtrace -n 'io:kernel::start { printf("%d\n", args[0]->bio_bcount); }'

 Note that the I/O systems in FreeBSD and Solaris/Illumos are sufficiently
 different that there is not a 1:1 mapping from scripts that work
 with one to the other.

This commit includes the fix so that our probes use "kernel"
instead of the Solaris specific "genunix"

END