On Thu, Apr 20, 2017 at 04:43:45PM +0300, Ville Syrjälä wrote: > On Thu, Apr 20, 2017 at 03:08:13PM +0200, Peter Zijlstra wrote: > > On Thu, Apr 20, 2017 at 03:44:47PM +0300, ville.syrjala@xxxxxxxxxxxxxxx wrote: > > > From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx> > > > > > > This reverts commit e93e59ce5b85e6c2b444f09fd1f707274ec066dc. > > > > > > The TSC stops in deeper C states, > > > > On some old hardware (Core2 era and before) only. You've forgotten to > > mention what hardware you've observed problems with. > > Yeah, Core2 is what I used when I finally decided to bisect this. I've > been plagued by the bogus powertop numbers on many machines, most > likely all of them were of some older vintage. > Tested-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx> OK, thanks. I'm currently chasing some other Core2 issue that is somewhat related. See: http://lkml.kernel.org/r/20170413132349.thxkwptdymsfsyxb@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx Once I have that sorted I'll post both patches.