Re: [PATCH V3 0/3] riscv: Add perf callchain support

[Mao Han]

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On Fri, May 17, 2019 at 04:43:01PM +0800, Mao Han wrote:
> 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.
> 
> CC: Palmer Dabbelt <palmer@xxxxxxxxxx>
> CC: linux-riscv <linux-riscv@xxxxxxxxxxxxxxxxxxx>
> CC: Christoph Hellwig <hch@xxxxxx>
> CC: Guo Ren <guoren@xxxxxxxxxx>
> 
> Changes since v2:
>   - fix inconsistent comment
>   - force to build kernel with -fno-omit-frame-pointer if perf
>     event is enabled
> 
> 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/Makefile                           |   3 +
>  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 +++++++++++++
>  14 files changed, 485 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
> 
> -- 
> 2.7.4
> 
> 
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