linux-kernel - Re: [PATCH v2 3/3] perf tools: Support register names from all archs

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Message-ID: <90bcce69-9585-3fb4-de89-bbf2bd6def05@huawei.com>
Date:   Wed, 8 Dec 2021 11:51:43 +0000
From:   John Garry <john.garry@...wei.com>
To:     German Gomez <german.gomez@....com>,
        <linux-kernel@...r.kernel.org>, <linux-perf-users@...r.kernel.org>,
        <acme@...nel.org>
CC:     Alexandre Truong <alexandre.truong@....com>,
        Will Deacon <will@...nel.org>,
        Mathieu Poirier <mathieu.poirier@...aro.org>,
        Leo Yan <leo.yan@...aro.org>,
        Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...hat.com>,
        "Namhyung Kim" <namhyung@...nel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-csky@...r.kernel.org>, <linux-riscv@...ts.infradead.org>
Subject: Re: [PATCH v2 3/3] perf tools: Support register names from all archs

On 07/12/2021 18:06, German Gomez wrote:
>   tools/perf/arch/arm/include/perf_regs.h       |  42 --
>   tools/perf/arch/arm64/include/perf_regs.h     |  76 --
>   tools/perf/arch/csky/include/perf_regs.h      |  82 ---
>   tools/perf/arch/mips/include/perf_regs.h      |  69 --
>   tools/perf/arch/powerpc/include/perf_regs.h   |  66 --
>   tools/perf/arch/riscv/include/perf_regs.h     |  74 --
>   tools/perf/arch/s390/include/perf_regs.h      |  78 --
>   tools/perf/arch/x86/include/perf_regs.h       |  82 ---
>   tools/perf/builtin-script.c                   |  18 +-
>   tools/perf/util/perf_regs.c                   | 666 ++++++++++++++++++
>   tools/perf/util/perf_regs.h                   |  10 +-
>   .../scripting-engines/trace-event-python.c    |  10 +-
>   tools/perf/util/session.c                     |  25 +-
>   13 files changed, 697 insertions(+), 601 deletions(-)

Did you consider leaving the register structures where they are while
renaming to include the arch name and then having as externs or similar? 
I see an example of that idea for arm64_unwind_libunwind_ops.

Cheers,
John