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
* 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
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...
Will
* 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
Hi Will, Ingo,
The series has been updated after the comments and re-submitted.
Thanks! Jean
On 17 December 2013 12:08, Ingo Molnar mingo@kernel.org wrote:
- 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-- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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