---
- branch: MAIN
  date: Thu Oct 15 00:28:47 UTC 2009
  files:
  - new: '1.52'
    old: '1.51'
    path: src/sys/rump/librump/rumpkern/Makefile.rumpkern
    pathrev: src/sys/rump/librump/rumpkern/Makefile.rumpkern@1.52
    type: modified
  - new: '1.101'
    old: '1.100'
    path: src/sys/rump/librump/rumpkern/emul.c
    pathrev: src/sys/rump/librump/rumpkern/emul.c@1.101
    type: modified
  - new: '1.29'
    old: '1.28'
    path: src/sys/rump/librump/rumpkern/locks.c
    pathrev: src/sys/rump/librump/rumpkern/locks.c@1.29
    type: modified
  - new: '1.19'
    old: '1.18'
    path: src/sys/rump/librump/rumpkern/ltsleep.c
    pathrev: src/sys/rump/librump/rumpkern/ltsleep.c@1.19
    type: modified
  - new: '1.24'
    old: '1.23'
    path: src/sys/rump/librump/rumpkern/misc_stub.c
    pathrev: src/sys/rump/librump/rumpkern/misc_stub.c@1.24
    type: modified
  - new: '1.6'
    old: '1.5'
    path: src/sys/rump/librump/rumpkern/percpu.c
    pathrev: src/sys/rump/librump/rumpkern/percpu.c@1.6
    type: modified
  - new: '1.124'
    old: '1.123'
    path: src/sys/rump/librump/rumpkern/rump.c
    pathrev: src/sys/rump/librump/rumpkern/rump.c@1.124
    type: modified
  - new: '1.31'
    old: '1.30'
    path: src/sys/rump/librump/rumpkern/rump_private.h
    pathrev: src/sys/rump/librump/rumpkern/rump_private.h@1.31
    type: modified
  - new: '1.1'
    old: '0'
    path: src/sys/rump/librump/rumpkern/scheduler.c
    pathrev: src/sys/rump/librump/rumpkern/scheduler.c@1.1
    type: added
  - new: '1.6'
    old: '1.5'
    path: src/sys/rump/librump/rumpkern/arch/i386/rumpcpu.c
    pathrev: src/sys/rump/librump/rumpkern/arch/i386/rumpcpu.c@1.6
    type: modified
  - new: '1.4'
    old: '1.3'
    path: src/sys/rump/librump/rumpuser/rumpuser_int.h
    pathrev: src/sys/rump/librump/rumpuser/rumpuser_int.h@1.4
    type: modified
  - new: '1.36'
    old: '1.35'
    path: src/sys/rump/librump/rumpuser/rumpuser_pth.c
    pathrev: src/sys/rump/librump/rumpuser/rumpuser_pth.c@1.36
    type: modified
  id: 20091015T002847Z.521c2334134df2a6b86c5ceea7df78880ecfb831
  log: |
    Add initial work on a rump virtual cpu scheduler.  This is necessary
    for kernel code which has been written to avoid MP contention by
    using cpu-local storage (most prominently, select and pool_cache).

    Instead of always assuming rump_cpu, the scheduler must now be run
    (and unrun) on all entry points into rump.  Likewise, rumpuser
    unruns and re-runs the scheduler around each potentially blocking
    operation.  As an optimization, I modified some locking primitives
    to try to get the lock without blocking before releasing the cpu.

    Also, ltsleep was modified to assume that it is never called without
    the biglock held and made to use the biglock as the sleep interlock.
    Otherwise there is just too much drama with deadlocks.  If some
    kernel code wants to call ltsleep without the biglock, then, *snif*,
    it's no longer supported and rump and should be modified to support
    newstyle locks anyway.
  module: src
  subject: 'CVS commit: src/sys/rump/librump'
  unixtime: '1255566527'
  user: pooka