cvs commit: src/sys/i386/i386 p4tcc.c

[Maxim Sobolev]

sobomax     2005-02-07 11:35:24 UTC

  FreeBSD src repository

  Modified files:
    sys/i386/i386        p4tcc.c 
  Log:
  Fix the problem with incorrect throttling level reported immediately after
  reboot. Safter the reboot the TCC is usually in the Automatic mode, in which
  reading current performance level is likely to produce bogus results make sure
  to switch it to the On-Demand mode and set to some known performance level.
  Unfortunately there is no reliable way to check that TCC is in the Automatic
  mode. Reading bit 4 of ACPI Thermal Monitor Control Register produces 0
  regardless of the current mode.
  
  MFC after:      1 week
  
  Revision  Changes    Path
  1.7       +11 -0     src/sys/i386/i386/p4tcc.c