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Message-ID: <20130116185815.GA3351@us.ibm.com> Date: Wed, 16 Jan 2013 10:58:16 -0800 From: Sukadev Bhattiprolu <sukadev@...ux.vnet.ibm.com> To: Jiri Olsa <jolsa@...hat.com> Cc: Arnaldo Carvalho de Melo <acme@...stprotocols.net>, Peter Zijlstra <a.p.zijlstra@...llo.nl>, Paul Mackerras <paulus@...ba.org>, Ingo Molnar <mingo@...hat.com>, Anton Blanchard <anton@....ibm.com>, robert.richter@....com, linuxppc-dev@...abs.org, linux-kernel@...r.kernel.org, Stephane Eranian <eranian@...gle.com>, Andi Kleen <ak@...ux.intel.com>, Greg KH <greg@...ah.com> Subject: Re: [PATCH 6/6][v3] perf: Document the ABI of perf sysfs entries Jiri Olsa [jolsa@...hat.com] wrote: | 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) I see that file now ! I have removed that documentation from my patch. | | anyway, after reading Documentation/ABI/README looks like we | should go for 'testing' section with this as well.. stable | seems scary at this point ;-) Agree. Here is the updated patch. --- This patchset addes two new sets of files to sysfs for POWER architecture. - perf event config format in /sys/devices/cpu/format/event - generic and POWER-specific perf events in /sys/devices/cpu/events/ The format of the first file is already documented in: Documentation/ABI/testing/sysfs-bus-event_source-devices-format Document the format of the second set of files '/sys/devices/cpu/events/*' which would also become part of the ABI. Changelog[v3.1]: (small changes to this one patch). [Jiri Olsa]: Remove the documentation for the 'config format' file as it is already documented. [Jiri Olsa]: Move the documentation of 'events' also to 'testing/' Changelog[v3]: [Greg KH] Include ABI documentation. Signed-off-by: Sukadev Bhattiprolu <sukadev@...ux.vnet.ibm.com> --- .../testing/sysfs-bus-event_source-devices-events | 58 ++++++++++++++++++++ 1 files changed, 58 insertions(+), 0 deletions(-) delete mode 100644 Documentation/ABI/stable/sysfs-devices-cpu-events create mode 100644 Documentation/ABI/testing/sysfs-bus-event_source-devices-events diff --git a/Documentation/ABI/stable/sysfs-devices-cpu-events b/Documentation/ABI/stable/sysfs-devices-cpu-events deleted file mode 100644 index e69de29..0000000 diff --git a/Documentation/ABI/testing/sysfs-bus-event_source-devices-events b/Documentation/ABI/testing/sysfs-bus-event_source-devices-events new file mode 100644 index 0000000..2c4081e --- /dev/null +++ b/Documentation/ABI/testing/sysfs-bus-event_source-devices-events @@ -0,0 +1,58 @@ +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: 2012/01/NN + +Contact: Linux kernel mailing list <linux-kernel@...r.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 and the number '0xNNNN' shows the + "raw code" for the perf event identified by the file's + "basename". + + +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-kernel@...r.kernel.org> + Linux Powerpc mailing list <linuxppc-dev@...abs.org> + +Description: POWER-systems 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 and the number '0xNNNN' shows the + "raw code" for the perf event identified by the file's + "basename". -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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