From: mathieu.poirier@linaro.org (Mathieu Poirier)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 0/2] perf tools: coresight PMU recording capabilities
Date: Tue, 31 May 2016 11:10:31 -0600 [thread overview]
Message-ID: <1464714633-16697-1-git-send-email-mathieu.poirier@linaro.org> (raw)
Good day Arnaldo,
If you recal we had a discussion about the code submitted in this set back in
February[1]. At the time we agreed it would be better to wait until the
decoding library is available, allowing people to test the solution.
That library is now out and accessible by anyone[2] - branch "opencsd-0v002"
is stable and the one we advise to use. Part of that branch is a "HOWTO.md"
that describes how to perform on-target trace acquisition, along with how to
setup the library and perf tools for off system trace decoding.
The patches in this set can also be found on gitHub[2], branch
"perf-opencsd-4.7-rc1". Available there are many more patches that will be
submitted for review incrementally.
Everything works on mainline v4.7-rc1. I will be happy to change the baseline
should this prove to be easier for your to review. Note that 2/2 has already
been acked by Adrian Hunter but submitted here without the usual mention since
the code has change a little.
To conclude, here are a couple of pastebins for you to look at if you don't want
to go through the whole process of setting up the solution:
$ perf report --stdio -D [3]
$ perf report --stdio [4]
And a snippet of the output from the "cs-etm-disasem.py" script, also included
on branch "perf-opencsd-4.7-rc1":
FILE: /lib/aarch64-linux-gnu/ld-2.21.so CPU: 3
7fab57fd80: 910003e0 mov x0, sp
7fab57fd84: 94000d53 bl 7fab5832d0 <free@plt+0x3790>
FILE: /lib/aarch64-linux-gnu/ld-2.21.so CPU: 3
7fab5832d0: d11203ff sub sp, sp, #0x480
FILE: /lib/aarch64-linux-gnu/ld-2.21.so CPU: 3
7fab5832d4: a9ba7bfd stp x29, x30, [sp,#-96]!
7fab5832d8: 910003fd mov x29, sp
7fab5832dc: a90363f7 stp x23, x24, [sp,#48]
7fab5832e0: 9101e3b7 add x23, x29, #0x78
7fab5832e4: a90573fb stp x27, x28, [sp,#80]
7fab5832e8: a90153f3 stp x19, x20, [sp,#16]
7fab5832ec: aa0003fb mov x27, x0
7fab5832f0: 910a82e1 add x1, x23, #0x2a0
7fab5832f4: a9025bf5 stp x21, x22, [sp,#32]
7fab5832f8: a9046bf9 stp x25, x26, [sp,#64]
7fab5832fc: 910102e0 add x0, x23, #0x40
7fab583300: f800841f str xzr, [x0],#8
7fab583304: eb01001f cmp x0, x1
7fab583308: 54ffffc1 b.ne 7fab583300 <free@plt+0x37c0>
FILE: /lib/aarch64-linux-gnu/ld-2.21.so CPU: 3
7fab583300: f800841f str xzr, [x0],#8
7fab583304: eb01001f cmp x0, x1
7fab583308: 54ffffc1 b.ne 7fab583300 <free@plt+0x37c0>
FILE: /lib/aarch64-linux-gnu/ld-2.21.so CPU: 3
7fab583300: f800841f str xzr, [x0],#8
7fab583304: eb01001f cmp x0, x1
7fab583308: 54ffffc1 b.ne 7fab583300 <free@plt+0x37c0>
...
...
Regards,
Mathieu
[1]. http://lists.infradead.org/pipermail/linux-arm-kernel/2016-February/404232.html
[2]. https://github.com/Linaro/OpenCSD/
[3]. http://pastebin.com/u9tgdwjF
[4]. http://pastebin.com/V9N3bnEq
Mathieu Poirier (2):
perf tools: making coresight PMU listable
perf tools: adding coresight etm PMU record capabilities
MAINTAINERS | 4 +
tools/perf/MANIFEST | 1 +
tools/perf/arch/arm/util/Build | 2 +
tools/perf/arch/arm/util/auxtrace.c | 54 ++++
tools/perf/arch/arm/util/cs-etm.c | 559 ++++++++++++++++++++++++++++++++++++
tools/perf/arch/arm/util/cs-etm.h | 23 ++
tools/perf/arch/arm/util/pmu.c | 34 +++
tools/perf/arch/arm64/util/Build | 4 +
tools/perf/config/Makefile | 11 +-
tools/perf/util/auxtrace.c | 1 +
tools/perf/util/auxtrace.h | 1 +
tools/perf/util/cs-etm.h | 74 +++++
12 files changed, 765 insertions(+), 3 deletions(-)
create mode 100644 tools/perf/arch/arm/util/auxtrace.c
create mode 100644 tools/perf/arch/arm/util/cs-etm.c
create mode 100644 tools/perf/arch/arm/util/cs-etm.h
create mode 100644 tools/perf/arch/arm/util/pmu.c
create mode 100644 tools/perf/util/cs-etm.h
--
2.5.0
next reply other threads:[~2016-05-31 17:10 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-31 17:10 Mathieu Poirier [this message]
2016-05-31 17:10 ` [PATCH 1/2] perf tools: making coresight PMU listable Mathieu Poirier
2016-05-31 17:10 ` [PATCH 2/2] perf tools: adding coresight etm PMU record capabilities Mathieu Poirier
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