[PATCH 0/3] ARM64: add perf support

jean.pihet
2013-12-16T16:49:47Z

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

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