On Tue, Jan 15, 2013 at 03:57:59PM -0300, Arnaldo Carvalho de Melo wrote: > 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?
hm, we already already 'format' definition but in testing section (and we are missing 'events' definition there.. my bad) anyway, after reading Documentation/ABI/README looks like we should go for 'testing' section with this as well.. stable seems scary at this point ;-) jirka > > 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
