---
- branch: MAIN
  date: Thu Dec 15 03:42:33 UTC 2011
  files:
  - new: '1.23'
    old: '1.22'
    path: src/sys/arch/usermode/dev/clock.c
    pathrev: src/sys/arch/usermode/dev/clock.c@1.23
    type: modified
  - new: '1.55'
    old: '1.54'
    path: src/sys/arch/usermode/dev/cpu.c
    pathrev: src/sys/arch/usermode/dev/cpu.c@1.55
    type: modified
  - new: '1.41'
    old: '1.40'
    path: src/sys/arch/usermode/include/thunk.h
    pathrev: src/sys/arch/usermode/include/thunk.h@1.41
    type: modified
  - new: '1.47'
    old: '1.46'
    path: src/sys/arch/usermode/usermode/thunk.c
    pathrev: src/sys/arch/usermode/usermode/thunk.c@1.47
    type: modified
  id: 20111215T034233Z.cef8bad6fb67f4e5d95e038a74e49868c44d23c6
  log: |
    Improve usermode timecounter. It's unreasonable to assume that we'll get
    100 "SIGALRM" per second with an ITIMER_REAL at 100Hz on a HZ=100 host as
    the timer may expire before a pending signal has been delivered.

    Instead of setitimer, use timer_create + timer_settime and from our
    intr handler use timer_getoverrun to determine how many ticks we have
    missed.
  module: src
  subject: 'CVS commit: src/sys/arch/usermode'
  unixtime: '1323920553'
  user: jmcneill