Messages in this thread | | | Date | Tue, 17 Dec 2013 11:45:34 +0100 | From | Ingo Molnar <> | Subject | Re: [PATCH 0/3] ARM64: add perf support |
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* jean.pihet@linaro.org <jean.pihet@linaro.org> wrote:
> From: Jean Pihet <jean.pihet@linaro.org> > > Add perf support for the AARCH64 architecture. This includes the > support for: > - AARCH64 perf registers definition and hooks, > - compat mode registers use, i.e. profiling a 32-bit binary on > a 64-bit system, > - unwinding using the dwarf information from the .debug_frame > section of the ELF binary; only in 64-bit mode, > - unwinding using the frame pointer information; in 64-bit and > compat modes. > > ToDo: > - add support for unwinding using the dwarf information in compat > mode. This requires some changes to the libunwind code. > > Tested on ARMv7 and ARMv8 platforms. The compat mode has been tested > on ARMv8 using statically built 32-bit binaries. > > > Jean Pihet (3): > ARM64: perf: add support for perf registers API > ARM64: perf: wire up perf_regs and unwind support > ARM64: perf: add support for frame pointer unwinding in compat mode > > arch/arm64/Kconfig | 2 + > arch/arm64/include/asm/ptrace.h | 1 + > arch/arm64/include/uapi/asm/Kbuild | 1 + > arch/arm64/include/uapi/asm/perf_regs.h | 40 ++++++++++++++ > arch/arm64/kernel/Makefile | 1 + > arch/arm64/kernel/perf_event.c | 75 +++++++++++++++++++++++--- > arch/arm64/kernel/perf_regs.c | 46 ++++++++++++++++ > tools/perf/arch/arm64/Makefile | 7 +++ > tools/perf/arch/arm64/include/perf_regs.h | 88 +++++++++++++++++++++++++++++++ > tools/perf/arch/arm64/util/dwarf-regs.c | 81 ++++++++++++++++++++++++++++ > tools/perf/arch/arm64/util/unwind.c | 82 ++++++++++++++++++++++++++++ > tools/perf/config/Makefile | 8 ++- > 12 files changed, 423 insertions(+), 9 deletions(-) > create mode 100644 arch/arm64/include/uapi/asm/perf_regs.h > create mode 100644 arch/arm64/kernel/perf_regs.c > create mode 100644 tools/perf/arch/arm64/Makefile > create mode 100644 tools/perf/arch/arm64/include/perf_regs.h > create mode 100644 tools/perf/arch/arm64/util/dwarf-regs.c > create mode 100644 tools/perf/arch/arm64/util/unwind.c
Arnaldo, AFAICS the main merging complexity will probably be on the perf tooling side, so if you are happy with these bits, mind picking them up into your tree?
Thanks,
Ingo
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