On Tue, Mar 24, 2015 at 05:20:13PM -0400, Len Brown wrote: > <cc: linux-pm list> > > On Thu, Nov 13, 2014 at 6:19 PM, Andi Kleen <a...@firstfloor.org> wrote: > > From: Andi Kleen <a...@linux.intel.com> > > > > Add support for reading PCU power metrics on Sandy Bridge / Ivy Bridge EP > > and Haswell Server in turbostat. This is done using the perf ABI, > > using the perf uncore driver. This requires the kernel to > > have uncore perf driver support. > > What happens if kernel doesn't include that support?
The data is not displayed. > > The user has to specify the event group using a new -x option. All > > more sensible option characters were already taken. When -x is > > not specified no behavior changes. > > I'm concerned that turbostat cmdline is getting too complicated, > and this makes that more the case. Modern computers are complicated. No way around it. > > However this currently runs into a problem with the uncore > > driver that only makes us able to monitor a single band. > > Disabled until this is fixed. BTW this is fixed. Will update. > > Custom user metrics would be also possible. > > > > The event resolution code is derived from the jevents library > > (parts of pmu-tools, http://github.com/andikleen/pmu-tools) > > and is BSD licensed. > > can we put BSD licensed code into utilities that are in the linux > kernel git tree? I think so. There are already some. -Andi -- 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/
