Messages in this thread | | | From | Mathieu Poirier <> | Subject | [PATCH 00/10] perf tools: Add support for CoreSight trace decoding | Date | Fri, 15 Dec 2017 09:44:49 -0700 |
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This patchset adds support for per-thread CoreSight trace decoding from the "perf report" interface. It is largely modelled on what has been done for intelPT traces and currently targets the ETMv4 architecture. Support for cpu-wide scenarios and ETMv3/PTMv1.1 will follow shortly.
The trace decoding support is done using the Open CoreSight Decoding Library (openCSD), a stand alone open source project available here [1]. Integration of the openCSD library with the perf tools follow what has been done for other support libraries. If the library has been installed on a system the build scripts will include support for CoreSight trace decoding:
... zlib: [ on ] ... lzma: [ OFF ] ... get_cpuid: [ on ] ... bpf: [ on ] ... libopencsd: [ on ] <------
Instructions on how to build and install the openCSD library are provided in the HOWTO.md of the project repository. We elected to keep the decoder library independent of the kernel tree as it is also used outside of the perf toolset and various non-linux projects.
The work applies cleanly to [2] and proper functionning of the feature depends on this patch [3].
Review and comments would be greatly appreciated.
Regards, Mathieu
[1]. https://github.com/Linaro/OpenCSD [2]. git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git perf/core [3]. https://lkml.org/lkml/2017/12/14/612
Mathieu Poirier (8): perf tools: Integrating the CoreSight decoding library perf tools: Add initial entry point for decoder CoreSight traces perf tools: Add decoder mechanic to support dumping trace data perf tools: Add support for decoding CoreSight trace data perf tools: Add functionality to communicate with the openCSD decoder pert tools: Add queue management functionality perf tools: Add full support for CoreSight trace decoding perf tools: Add mechanic to synthesise CoreSight trace packets
Tor Jeremiassen (2): perf tools: Add processing of coresight metadata MAINTAINERS: Adding entry for CoreSight trace decoding
MAINTAINERS | 3 +- tools/build/Makefile.feature | 6 +- tools/build/feature/Makefile | 6 +- tools/build/feature/test-all.c | 5 + tools/build/feature/test-libopencsd.c | 8 + tools/perf/Makefile.config | 13 + tools/perf/util/Build | 6 + tools/perf/util/auxtrace.c | 2 + tools/perf/util/cs-etm-decoder/Build | 1 + tools/perf/util/cs-etm-decoder/cs-etm-decoder.c | 513 ++++++++++++ tools/perf/util/cs-etm-decoder/cs-etm-decoder.h | 105 +++ tools/perf/util/cs-etm.c | 1023 +++++++++++++++++++++++ tools/perf/util/cs-etm.h | 18 + 13 files changed, 1705 insertions(+), 4 deletions(-) create mode 100644 tools/build/feature/test-libopencsd.c create mode 100644 tools/perf/util/cs-etm-decoder/Build create mode 100644 tools/perf/util/cs-etm-decoder/cs-etm-decoder.c create mode 100644 tools/perf/util/cs-etm-decoder/cs-etm-decoder.h create mode 100644 tools/perf/util/cs-etm.c
-- 2.7.4
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