From: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
To: Jiri Olsa <jolsa@redhat.com>
Cc: Andi Kleen <ak@linux.intel.com>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
robert.richter@amd.com, Greg KH <greg@kroah.com>,
Anton Blanchard <anton@au1.ibm.com>,
linux-kernel@vger.kernel.org,
Stephane Eranian <eranian@google.com>,
linuxppc-dev@ozlabs.org, Ingo Molnar <mingo@redhat.com>,
Paul Mackerras <paulus@samba.org>,
Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Subject: Re: [PATCH 6/6][v3] perf: Document the ABI of perf sysfs entries
Date: Wed, 16 Jan 2013 10:58:16 -0800 [thread overview]
Message-ID: <20130116185815.GA3351@us.ibm.com> (raw)
In-Reply-To: <20130116113013.GA1042@krava.brq.redhat.com>
Jiri Olsa [jolsa@redhat.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@linux.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@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 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@vger.kernel.org>
+ Linux Powerpc mailing list <linuxppc-dev@ozlabs.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
next prev parent reply other threads:[~2013-01-16 18:58 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-01-10 1:03 [PATCH 1/6][v3] perf/Power7: Use macros to identify perf events Sukadev Bhattiprolu
2013-01-10 1:04 ` [PATCH 2/6][v3] perf: Make EVENT_ATTR global Sukadev Bhattiprolu
2013-01-10 1:05 ` [PATCH 3/6][v3] perf/POWER7: Make generic event translations available in sysfs Sukadev Bhattiprolu
2013-01-10 1:06 ` [PATCH 4/6][v3] perf/POWER7: Make some POWER7 events " Sukadev Bhattiprolu
2013-01-10 1:06 ` [PATCH 5/6][v3] perf: Create a sysfs entry for Power event format Sukadev Bhattiprolu
2013-01-10 1:07 ` [PATCH 6/6][v3] perf: Document the ABI of perf sysfs entries Sukadev Bhattiprolu
2013-01-15 18:57 ` Arnaldo Carvalho de Melo
2013-01-15 22:47 ` Greg KH
2013-01-16 11:30 ` Jiri Olsa
2013-01-16 18:58 ` Sukadev Bhattiprolu [this message]
2013-01-17 14:11 ` Jiri Olsa
2013-01-18 17:46 ` Sukadev Bhattiprolu
2013-01-18 19:20 ` Arnaldo Carvalho de Melo
2013-01-22 17:10 ` Jiri Olsa
2013-01-23 3:50 ` [PATCH 1/6][v3] perf/Power7: Use macros to identify perf events Michael Ellerman
-- strict thread matches above, loose matches on Subject: below --
2013-01-10 0:06 sukadev
2013-01-10 0:06 ` [PATCH 6/6][v3] perf: Document the ABI of perf sysfs entries sukadev
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