cvs commit: src/sys/i386/i386 machdep.c mp_machdep.c

[John Baldwin]

jhb         2003/10/22 13:15:10 PDT

  FreeBSD src repository

  Modified files:        (Branch: RELENG_4)
    sys/i386/i386        machdep.c mp_machdep.c 
  Log:
  MFC: Always enable hyperthreading to avoid lockups due to APIC interrupt
  routing problems.
  - Enable cpu_idle_hlt for the SMP case by default since that significantly
    helps HTT performance.
  - Provide a facility for disabling individual CPUs by refusing to schedule
    processes on them.
  - Use the above to provide a sysctl for disabling or enabling all logical
    CPUs.  The default is to disable all logical CPUs.
  - Remove the 'HTT' kernel option now that it is obsolete.
  
  Submitted by:   ps
  Approved by:    re (murray)
  
  Revision    Changes    Path
  1.385.2.34  +6 -4      src/sys/i386/i386/machdep.c
  1.115.2.19  +96 -24    src/sys/i386/i386/mp_machdep.c