missing kstat.arcstat.l2_read_bytes

[Alexander Shevchenko]

Good time of day!

Comparing Solaris 10u8(ZFS pool version 15) and FreeBSD 8RC(ZFS pool version
13)1 kstat output, i'v found that FreeBSD missing kernel variable
kstat.zfs.misc.arcstats.l2_read_bytes. It exists in OpenSolaris source
http://fxr.watson.org/fxr/source//common/fs/zfs/arc.c?v=OPENSOLARIS but
missing FreeBSD HEAD source
http://fxr.watson.org/fxr/source//cddl/contrib/opensolaris/uts/common/fs/zfs/arc.cIs
it a bug or a feature?

WBR,
Alexander Shevchenko