[PATCH v2 0/3] riscv: Add perf callchain support

[Mao Han <han_mao@c-sky.com>]

This patch set add perf callchain(FP/DWARF) support for RISC-V.
It comes from the csky version callchain support with some
slight modifications. The patchset base on Linux 5.1-rc4:
15ade5d2e7775667cf191cf2f94327a4889f8b9d

CC: Palmer Dabbelt <palmer@sifive.com>
CC: linux-riscv<linux-riscv@lists.infradead.org>
CC: Christoph Hellwig <hch@lst.de>
CC: Guo Ren <guoren@kernel.org>

Changes since v1:
  - simplify implementation and code convention

Mao Han (3):
  riscv: Add perf callchain support
  riscv: Add support for perf registers sampling
  riscv: Add support for libdw

 arch/riscv/Kconfig                            |   2 +
 arch/riscv/include/uapi/asm/perf_regs.h       |  42 ++++++++++
 arch/riscv/kernel/Makefile                    |   4 +-
 arch/riscv/kernel/perf_callchain.c            | 113 ++++++++++++++++++++++++++
 arch/riscv/kernel/perf_regs.c                 |  44 ++++++++++
 tools/arch/riscv/include/uapi/asm/perf_regs.h |  42 ++++++++++
 tools/perf/Makefile.config                    |   6 +-
 tools/perf/arch/riscv/Build                   |   1 +
 tools/perf/arch/riscv/Makefile                |   3 +
 tools/perf/arch/riscv/include/perf_regs.h     |  96 ++++++++++++++++++++++
 tools/perf/arch/riscv/util/Build              |   2 +
 tools/perf/arch/riscv/util/dwarf-regs.c       |  72 ++++++++++++++++
 tools/perf/arch/riscv/util/unwind-libdw.c     |  57 +++++++++++++
 13 files changed, 482 insertions(+), 2 deletions(-)
 create mode 100644 arch/riscv/include/uapi/asm/perf_regs.h
 create mode 100644 arch/riscv/kernel/perf_callchain.c
 create mode 100644 arch/riscv/kernel/perf_regs.c
 create mode 100644 tools/arch/riscv/include/uapi/asm/perf_regs.h
 create mode 100644 tools/perf/arch/riscv/Build
 create mode 100644 tools/perf/arch/riscv/Makefile
 create mode 100644 tools/perf/arch/riscv/include/perf_regs.h
 create mode 100644 tools/perf/arch/riscv/util/Build
 create mode 100644 tools/perf/arch/riscv/util/dwarf-regs.c
 create mode 100644 tools/perf/arch/riscv/util/unwind-libdw.c

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2.7.4