1. 08 2月, 2006 1 次提交
  2. 07 2月, 2006 6 次提交
  3. 05 2月, 2006 2 次提交
    • A
      [PATCH] x86_64: Calibrate APIC timer using PM timer · 0c3749c4
      Andi Kleen 提交于
      On some broken motherboards (at least one NForce3 based AMD64 laptop)
      the PIT timer runs at a incorrect frequency.  This patch adds a new
      option "apicpmtimer" that allows to use the APIC timer and calibrate it
      using the PMTimer.  It requires the earlier patch that allows to run the
      main timer from the APIC.
      
      Specifying apicpmtimer implies apicmaintimer.
      
      The option defaults to off for now.
      
      I tested it on a few systems and the resulting APIC timer frequencies
      were usually a bit off, but always <1%, which should be tolerable.
      
      TBD figure out heuristic to enable this automatically on the affected
      systems TBD perhaps do it on all NForce3s or using DMI?
      Signed-off-by: NAndi Kleen <ak@suse.de>
      Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
      0c3749c4
    • A
      [PATCH] x86_64: Allow to run main time keeping from the local APIC interrupt · 73dea47f
      Andi Kleen 提交于
      Another piece from the no-idle-tick patch.
      
      This can be enabled with the "apicmaintimer" option.
      
      This is mainly useful when the PIT/HPET interrupt is unreliable.
      Note there are some systems that are known to stop the APIC
      timer in C3. For those it will never work, but this case
      should be automatically detected.
      
      It also only works with PM timer right now. When HPET is used
      the way the main timer handler computes the delay doesn't work.
      
      It should be a bit more efficient because there is one less
      regular interrupt to process on the boot processor.
      
      Requires earlier bugfix from Venkatesh
      Signed-off-by: NAndi Kleen <ak@suse.de>
      Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
      73dea47f
  4. 04 2月, 2006 6 次提交
  5. 03 2月, 2006 1 次提交
  6. 02 2月, 2006 8 次提交
  7. 01 2月, 2006 9 次提交
  8. 30 1月, 2006 2 次提交
  9. 24 1月, 2006 2 次提交
  10. 19 1月, 2006 2 次提交
  11. 17 1月, 2006 1 次提交