linux-kernel - Re: [PATCH v2 3/5] parisc: add system call table generation support

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Message-ID: <CAK8P3a0D2G8=weYcua7G3HmL07vrYR_iExmmjt2SuokbJ=Vvog@mail.gmail.com>
Date:   Mon, 1 Oct 2018 13:36:12 +0200
From:   Arnd Bergmann <arnd@...db.de>
To:     Firoz Khan <firoz.khan@...aro.org>
Cc:     Parisc List <linux-parisc@...r.kernel.org>,
        "James E.J. Bottomley" <jejb@...isc-linux.org>,
        Helge Deller <deller@....de>,
        Thomas Gleixner <tglx@...utronix.de>,
        gregkh <gregkh@...uxfoundation.org>,
        Philippe Ombredanne <pombredanne@...b.com>,
        Kate Stewart <kstewart@...uxfoundation.org>,
        y2038 Mailman List <y2038@...ts.linaro.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-arch <linux-arch@...r.kernel.org>,
        Deepa Dinamani <deepa.kernel@...il.com>,
        Marcin Juszkiewicz <marcin.juszkiewicz@...aro.org>
Subject: Re: [PATCH v2 3/5] parisc: add system call table generation support

On Thu, Sep 27, 2018 at 4:25 PM Firoz Khan <firoz.khan@...aro.org> wrote:
>
> ---
>  arch/parisc/kernel/syscalls/Makefile       |  55 +++++
>  arch/parisc/kernel/syscalls/syscall_32.tbl | 342 +++++++++++++++++++++++++++++
>  arch/parisc/kernel/syscalls/syscall_64.tbl | 342 +++++++++++++++++++++++++++++
>  arch/parisc/kernel/syscalls/syscallhdr.sh  |  35 +++
>  arch/parisc/kernel/syscalls/syscalltbl.sh  |  42 ++++

I think we absolutely want to share the .tbl files for generating all
five outputs
(32-bit unistd.h, 64-bit unistd.h, 32-bit native syscall-table.S, 64-bit native
syscall-table.S, and 32-bit compat syscall-table.S) so we only
have to modify one file when adding another syscall, and to ensure that
 32/64 are in sync.

      Arnd