CVS: cvs.openbsd.org: src

[Visa Hankala]

CVSROOT:        /cvs
Module name:    src
Changes by:     v...@cvs.openbsd.org    2017/04/20 07:33:00

Modified files:
        sys/kern       : kern_rwlock.c kern_synch.c 
        sys/sys        : rwlock.h 

Log message:
Hook up rwlock(9) to witness(4).

Loosely based on a diff from Christian Ludwig