---
- branch: MAIN
  date: Wed Jan  1 21:09:12 UTC 2020
  files:
  - new: '1.29'
    old: '1.28'
    path: src/sys/dev/clock_subr.h
    pathrev: src/sys/dev/clock_subr.h@1.29
    type: modified
  - new: '1.515'
    old: '1.514'
    path: src/sys/kern/init_main.c
    pathrev: src/sys/kern/init_main.c@1.515
    type: modified
  - new: '1.44'
    old: '1.43'
    path: src/sys/kern/kern_todr.c
    pathrev: src/sys/kern/kern_todr.c@1.44
    type: modified
  id: 20200101T210912Z.fafbc2bce247fcab18e35a2b40c016e1082f850c
  log: "First steps towards properly serializing access to the TOD clock.\n- Add a
    mutex around the TODR, and provide lock/unlock/lock-owned\n  functions to manipulate
    it.\n- Rename inittodr() to todr_set_systime() and resettodr() to\n  todr_save_systime()
    to better reflect what they do.  These functions\n  are intended to be called
    with the TODR lock held, which will allow\n  for a pattern like:\n\t-> todr_lock()\n\t->
    todr_save_systime()\n\t-> [do machine-dependent stuff to sleep/suspend]\n\t->
    [magically awaken]\n\t-> todr_set_systime(...)\n\t-> todr_unlock()\n- Provide
    historically-named wrappers inittodr() and resettodr() that\n  do the dance of
    acquiring / releasing the lock around the actual\n  substance.\n\nNOTE: resettodr()'s
    use of the TODR lock is currently disabled (and\ntodr_save_systime() does not
    assert it's held) until such time as\nissues around shutdown / reboot under duress
    can be addressed.\n"
  module: src
  subject: 'CVS commit: src/sys'
  unixtime: '1577912952'
  user: thorpej