| Message ID | 1582262314-8319-6-git-send-email-ego@linux.vnet.ibm.com (mailing list archive) |
|---|---|
| State | Superseded |
| Headers | show |
| Series | Track and expose idle PURR and SPURR ticks | expand |
| Context | Check | Description |
|---|---|---|
| snowpatch_ozlabs/apply_patch | success | Successfully applied on branch powerpc/merge (65b2623f395a4e25ab3ff4cff1c9c7623619a22d) |
| snowpatch_ozlabs/build-ppc64le | success | Build succeeded |
| snowpatch_ozlabs/build-ppc64be | success | Build succeeded |
| snowpatch_ozlabs/build-ppc64e | warning | Build succeeded but added 10 new sparse warnings |
| snowpatch_ozlabs/build-pmac32 | warning | Build succeeded but added 10 new sparse warnings |
| snowpatch_ozlabs/checkpatch | success | total: 0 errors, 0 warnings, 0 checks, 42 lines checked |
| snowpatch_ozlabs/needsstable | success | Patch has no Fixes tags |
"Gautham R. Shenoy" <ego@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-dev@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-dev@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-dev@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: /sys/devices/system/cpu/cpuX/idle_spurr > +Date: Nov 2019 And I suppose Nov 2019 is no longer accurate. > +Contact: Linux for PowerPC mailing list <linuxppc-dev@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
On Fri, Feb 21, 2020 at 10:55:07AM -0600, Nathan Lynch wrote: > "Gautham R. Shenoy" <ego@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-dev@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-dev@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-dev@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-dev@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
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-dev@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-dev@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-dev@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 +Date: Nov 2019 +Contact: Linux for PowerPC mailing list <linuxppc-dev@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.