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Subject[PATCH V2 0/3] perf tools: coresight PMU recording capabilities
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Good day Arnaldo,

This is the first set of patches aimed at supporting trace acquisition and
decoding using the ARM CoreSight drivers. The library is now out and accessible
by anyone[1] - 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[1], branch
"perf-opencsd-4.7-rc1". Available there are many more patches that will be
submitted for review incrementally.

This second revision has been rebased on the perf core branch[2], mandating the
addition of patch 1/3.

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]. https://github.com/Linaro/OpenCSD/
[2]. git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git perf/core
[3]. http://pastebin.com/u9tgdwjF
[4]. http://pastebin.com/V9N3bnEq

Changes for V2:
- Rebased on perf tree tip.
- Fixed file list in MAINTAINERS's file.
- Added Adrian Hunter's Acked-by.
- Reworked ifndef/endif in config/Makefile to avoid duplication.
- Patch 1/3, mandatory to make things compile.

Mathieu Poirier (3):
tools: Copy the header file needed by perf tools
perf tools: making coresight PMU listable
perf tools: adding coresight etm PMU record capabilities

MAINTAINERS | 5 +
tools/include/linux/coresight-pmu.h | 39 +++
tools/perf/MANIFEST | 1 +
tools/perf/Makefile.perf | 3 +
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 +++++
14 files changed, 807 insertions(+), 4 deletions(-)
create mode 100644 tools/include/linux/coresight-pmu.h
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

--
2.7.4

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