Messages in this thread | | | Date | Tue, 17 Dec 2013 12:08:56 +0100 | From | Ingo Molnar <> | Subject | Re: [PATCH 0/3] ARM64: add perf support |
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* Will Deacon <will.deacon@arm.com> wrote:
> On Tue, Dec 17, 2013 at 10:45:34AM +0000, Ingo Molnar wrote: > > * 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? > > Hold your horses! I've got a few review comments on the series...
Sure :-)
Thanks,
Ingo
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