Em Wed, Jan 09, 2013 at 05:07:03PM -0800, Sukadev Bhattiprolu escreveu: > [PATCH 6/6][v3] perf: Document the ABI of perf sysfs entries > > This patchset addes two new sets of files to sysfs: > > - generic and POWER-specific perf events in /sys/devices/cpu/events/ > - perf event config format in /sys/devices/cpu/format/event > > Document the format of these files which would become part of the ABI. > > Changelog[v3]: > [Greg KH] Include ABI documentation.
Jiri, can I have your ack on this one too? Greg, all ok now? - Arnaldo > Signed-off-by: Sukadev Bhattiprolu <suka...@linux.vnet.ibm.com> > --- > Documentation/ABI/stable/sysfs-devices-cpu-events | 54 > +++++++++++++++++++++ > Documentation/ABI/stable/sysfs-devices-cpu-format | 27 ++++++++++ > 2 files changed, 81 insertions(+), 0 deletions(-) > create mode 100644 Documentation/ABI/stable/sysfs-devices-cpu-format > > diff --git a/Documentation/ABI/stable/sysfs-devices-cpu-events > b/Documentation/ABI/stable/sysfs-devices-cpu-events > index e69de29..f37d542 100644 > --- a/Documentation/ABI/stable/sysfs-devices-cpu-events > +++ b/Documentation/ABI/stable/sysfs-devices-cpu-events > @@ -0,0 +1,54 @@ > +What: /sys/devices/cpu/events/ > + /sys/devices/cpu/events/branch-misses > + /sys/devices/cpu/events/cache-references > + /sys/devices/cpu/events/cache-misses > + /sys/devices/cpu/events/stalled-cycles-frontend > + /sys/devices/cpu/events/branch-instructions > + /sys/devices/cpu/events/stalled-cycles-backend > + /sys/devices/cpu/events/instructions > + /sys/devices/cpu/events/cpu-cycles > + > +Date: 2013/01/08 > + > +Contact: Linux kernel mailing list <linux-ker...@vger.kernel.org> > + > +Description: Generic performance monitoring events > + > + A collection of performance monitoring events that may be > + supported by many/most CPUs. These events can be monitored > + using the 'perf(1)' tool. > + > + The contents of each file would look like: > + > + event=0xNNNN > + > + where 'N' is a hex digit. > + > + > +What: /sys/devices/cpu/events/PM_LD_MISS_L1 > + /sys/devices/cpu/events/PM_LD_REF_L1 > + /sys/devices/cpu/events/PM_CYC > + /sys/devices/cpu/events/PM_BRU_FIN > + /sys/devices/cpu/events/PM_GCT_NOSLOT_CYC > + /sys/devices/cpu/events/PM_BRU_MPRED > + /sys/devices/cpu/events/PM_INST_CMPL > + /sys/devices/cpu/events/PM_CMPLU_STALL > + > +Date: 2013/01/08 > + > +Contact: Linux kernel mailing list <linux-ker...@vger.kernel.org> > + Linux Powerpc mailing list <linuxppc-...@ozlabs.org> > + > +Description: POWER specific performance monitoring events > + > + A collection of performance monitoring events that may be > + supported by the POWER CPU. These events can be monitored > + using the 'perf(1)' tool. > + > + These events may not be supported by other CPUs. > + > + The contents of each file would look like: > + > + event=0xNNNN > + > + where 'N' is a hex digit. > diff --git a/Documentation/ABI/stable/sysfs-devices-cpu-format > b/Documentation/ABI/stable/sysfs-devices-cpu-format > new file mode 100644 > index 0000000..b15cfb2 > --- /dev/null > +++ b/Documentation/ABI/stable/sysfs-devices-cpu-format > @@ -0,0 +1,27 @@ > +What: /sys/devices/cpu/format/ > + /sys/devices/cpu/format/event > + > +Date: 2013/01/08 > + > +Contact: Linux kernel mailing list <linux-ker...@vger.kernel.org> > + > +Description: Format of performance monitoring events > + > + Each CPU/architecture may use different format to represent > + the perf event. The 'event' file describes the configuration > + format of the performance monitoring event on the CPU/system. > + > + The contents of each file would look like: > + > + config:m-n > + > + where m and n are the starting and ending bits that are > + used to represent the event. > + > + For example, on POWER, > + > + $ cat /sys/devices/cpu/format/event > + config:0-20 > + > + meaning that POWER uses the first 20-bits to represent a perf > + event. > -- > 1.7.1 _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
