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Date:   Mon, 02 Apr 2018 20:15:44 -0700 (PDT)
Subject:     Re: [PATCH 0/2] perf: riscv: Preliminary Perf Event Support on RISC-V
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On Mon, 02 Apr 2018 05:31:22 PDT (-0700), alankao@andestech.com wrote:
> This implements the baseline PMU for RISC-V platforms.
>
> To ease future PMU portings, a guide is also written, containing
> perf concepts, arch porting practices and some hints.
>
> Changes in v2:
>  - Fix the bug reported by Alex, which was caused by not sufficient
>    initialization.  Check https://lkml.org/lkml/2018/3/31/251 for the
>    discussion.
>
> Alan Kao (2):
>   perf: riscv: preliminary RISC-V support
>   perf: riscv: Add Document for Future Porting Guide
>
>  Documentation/riscv/pmu.txt         | 249 +++++++++++++++++++
>  arch/riscv/Kconfig                  |  12 +
>  arch/riscv/include/asm/perf_event.h |  76 +++++-
>  arch/riscv/kernel/Makefile          |   1 +
>  arch/riscv/kernel/perf_event.c      | 468 ++++++++++++++++++++++++++++++++++++
>  5 files changed, 802 insertions(+), 4 deletions(-)
>  create mode 100644 Documentation/riscv/pmu.txt
>  create mode 100644 arch/riscv/kernel/perf_event.c

I'm having some trouble pulling this into my tree.  I think you might have 
another patch floating around somewhere, as I don't have any 
arch/riscv/include/asm/perf_event.h right now.

Do you mind rebasing this on top of linux-4.16 so I can look properly?

Thanks!