Re: [PATCH v4 2/4] Always running timer correlated clocksource

2015-11-18 Thread Jacob Pan
On Mon, 12 Oct 2015 11:45:20 -0700 "Hall, Christopher S" wrote: took a while to read the code, i have a few comments/questions > > diff --git a/arch/x86/kernel/tsc.c b/arch/x86/kernel/tsc.c > index c3f7602..c3f098c 100644 > --- a/arch/x86/kernel/tsc.c > +++ b/arch/x86/kernel/tsc.c > @@ -820,7 +820

Re: [PATCH v4 2/4] Always running timer correlated clocksource

2015-10-12 Thread kbuild test robot
Hi Christopher, [auto build test ERROR on net/master -- if it's inappropriate base, please suggest rules for selecting the more suitable base] url: https://github.com/0day-ci/linux/commits/Christopher-S-Hall/Patchset-enabling-hardware-based-cross-timestamps-for-next-gen-Intel-platforms/20151

[PATCH v4 2/4] Always running timer correlated clocksource

2015-10-12 Thread Christopher S. Hall
On modern Intel systems TSC is derived from the new Always Running Timer (ART). In addition, ART can be captured simultaneous to the capture of audio and network device clocks, allowing a correlation between timebases to be constructed. Upon capture, the driver converts the captured ART value to th