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Message-ID: <20130118174654.GA12575@us.ibm.com> Date: Fri, 18 Jan 2013 09:46:54 -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: | Maybe it'd worth to mention, that it does not need to be just 'event', | but anything from /sys/bus/event_source/devices/<dev>/format directory, | like | | The can be multiple terms like 'event=0xNNNN' specified | and separated with comma. All available terms are located | in /sys/bus/event_source/devices/<dev>/format file. | | Please feel free to rephrase or use proper English ;-) | | otherwise it's ok, | jirka Agree. Thanks for the review. Here is the updated patch. --- >From 1e3cc6b3ef87f533985b10574af472361e39eecd Mon Sep 17 00:00:00 2001 From: Sukadev Bhattiprolu <sukadev@...ux.vnet.ibm.com> Date: Tue, 8 Jan 2013 22:31:49 -0800 Subject: [PATCH] perf: Document the ABI of perf sysfs entries 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: 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[v3.2]: (small changes to this one patch). [Jiri Olsa]: Mention that multiple event= like terms can be specified in the 'events' file. Changelog[v3.1]: (small changes to just this one patch). [Jiri Olsa]: Remove the documentation for the 'config format' file as it is already documented in 'Documentation/ABI/testing/'. [Jiri Olsa]: Move the documentation of 'events' also to 'testing' from 'stable'. Changelog[v3]: [Greg KH] Include ABI documentation. Signed-off-by: Sukadev Bhattiprolu <sukadev@...ux.vnet.ibm.com> --- .../testing/sysfs-bus-event_source-devices-events | 62 ++++++++++++++++++++ 1 files changed, 62 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..0adeb52 --- /dev/null +++ b/Documentation/ABI/testing/sysfs-bus-event_source-devices-events @@ -0,0 +1,62 @@ +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-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". + + Further, multiple terms like 'event=0xNNNN' can be specified + and separated with comma. All available terms are defined in + the /sys/bus/event_source/devices/<dev>/format file. -- 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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