On Fri, Feb 21, 2020 at 10:55:07AM -0600, Nathan Lynch wrote: > "Gautham R. Shenoy" <e...@linux.vnet.ibm.com> writes: > > diff --git a/Documentation/ABI/testing/sysfs-devices-system-cpu > > b/Documentation/ABI/testing/sysfs-devices-system-cpu > > index 2e0e3b4..799dc737a 100644 > > --- a/Documentation/ABI/testing/sysfs-devices-system-cpu > > +++ b/Documentation/ABI/testing/sysfs-devices-system-cpu > > @@ -580,3 +580,42 @@ Description: Secure Virtual Machine > > If 1, it means the system is using the Protected Execution > > Facility in POWER9 and newer processors. i.e., it is a Secure > > Virtual Machine. > > + > > +What: /sys/devices/system/cpu/cpuX/purr > > +Date: Apr 2005 > > +Contact: Linux for PowerPC mailing list <linuxppc-...@ozlabs.org> > > +Description: PURR ticks for this CPU since the system boot. > > + > > + The Processor Utilization Resources Register (PURR) is > > + a 64-bit counter which provides an estimate of the > > + resources used by the CPU thread. The contents of this > > + register increases monotonically. This sysfs interface > > + exposes the number of PURR ticks for cpuX. > > + > > +What: /sys/devices/system/cpu/cpuX/spurr > > +Date: Dec 2006 > > +Contact: Linux for PowerPC mailing list <linuxppc-...@ozlabs.org> > > +Description: SPURR ticks for this CPU since the system boot. > > + > > + The Scaled Processor Utilization Resources Register > > + (SPURR) is a 64-bit counter that provides a frequency > > + invariant estimate of the resources used by the CPU > > + thread. The contents of this register increases > > + monotonically. This sysfs interface exposes the number > > + of SPURR ticks for cpuX. > > + > > +What: /sys/devices/system/cpu/cpuX/idle_purr > > +Date: Nov 2019 > > +Contact: Linux for PowerPC mailing list <linuxppc-...@ozlabs.org> > > +Description: PURR ticks for cpuX when it was idle. > > + > > + This sysfs interface exposes the number of PURR ticks > > + for cpuX when it was idle. > > + > > +What: /sys/devices/system/cpu/cpuX/spurr > > Copy-paste error? This should be:
Yes, this should have been idle_spurr. Will fix it in the next version. > > /sys/devices/system/cpu/cpuX/idle_spurr > > > +Date: Nov 2019 > > And I suppose Nov 2019 is no longer accurate. My bad. I will resend this with the updated date. > > > > +Contact: Linux for PowerPC mailing list <linuxppc-...@ozlabs.org> > > +Description: SPURR ticks for cpuX when it was idle. > > + > > + This sysfs interface exposes the number of SPURR ticks > > + for cpuX when it was idle. > > -- > > 1.9.4
