The vblank-rework tree has been sitting around with ported radeon and 
i915 drivers for some time now, but users aren't seeing the power 
saving benefits because it hasn't been merged upstream yet.

Several drivers still need to be ported, but I don't have the test 
hardware:
  mach64 (?)
  mga
  r128
  via

The porting is straightforward and the wins are immediate in terms of 
reduced power consumption (assuming your CPU has a power saving idle 
mode of some sort).

Any volunteers?  math_b said he'd look at the mach64 driver...  It would 
be great if we could finish this up and get it upstream soon.  If you 
have questions about the porting, just mail myself and/or the list and 
people will be happy to help.

Thanks,
Jesse

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