On Tue, Jun 02, 2015 at 05:21:27PM -0700, Andy Lutomirski wrote: > On Tue, Jun 2, 2015 at 4:38 PM, Andi Kleen <a...@linux.intel.com> wrote: > > On Tue, Jun 02, 2015 at 11:03:26PM +0200, Thomas Gleixner wrote: > >> > >> > >> On Tue, 2 Jun 2015, Andi Kleen wrote: > >> > >> > > There's the code in tsc_msr.c. It should be relatively > >> > > straightforward to extend it to cover everything that intel_pstate > >> > > supports. > >> > > >> > That's a good idea, but we still need an always working fallback when the > >> > model number is not available. So Adrian's patch is needed in any > >> > case. > >> > >> Nonsense. The slow calibration is already a working fallback. > > > > Please read Adrian's description again. It's not working when the PIT read > > is > > too slow. That is when the new algorithm is needed. > > > > tglx's suggestion was to use slow calibration as a fallback.
You mean the last fallback we have today? That one doesn't work if the PIT read is too slow. And Adrian's patch is fixing that. -Andi -- a...@linux.intel.com -- Speaking for myself only -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
