K 10
svn:author
V 3
jhb
K 8
svn:date
V 27
2000-10-27T02:59:30.000000Z
K 7
svn:log
V 888
- Use MUTEX_DECLARE() and MTX_COLD for the WITNESS code's internal mutex so
  it can function before malloc(9) is up and running.
- Add two new options WITNESS_DDB and WITNESS_SKIPSPIN.  If WITNESS_SKIPSPIN
  is enabled, then spin mutexes are ignored by the WITNESS code.  If
  WITNESS_DDB is turned on and DDB is compiled into the kernel, then the
  kernel will drop into DDB when either a lock hierarchy violation occurs
  or mutexes are held when going to sleep.
- Add some new sysctls:
  debug.witness_ddb is a read-write sysctl that corresponds to WITNESS_DDB.
     The kernel option merely changes the default value to on at boot.
  debug.witness_skipspin is a read-only sysctl that one can use to determine
     if the kernel was compiled with WITNESS_SKIPSPIN.
- Wipe out the BSD/OS-specific lock order lists.  We get to build our own
  lists now as we add mutexes to the kernel.

END