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Subject[PATCH V3 0/3] perf tools: coresight PMU recording capabilities
Date
This is the third revision of this set and has been rebased to [1].

It is aimed at supporting trace acquisition and decoding using the ARM
CoreSight drivers. The 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.

Here are a couple of pastebins demonstrating the solution:

$ perf report --stdio -D [3]
$ perf report --stdio [4]

And a snippet of the output from the "cs-etm-disasem.py" script that
will be upstreamed in an upcoming patchset.

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

Changes for V3:
- Rebased to [1].

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/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 +++++
13 files changed, 768 insertions(+), 4 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

--
2.7.4

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