linux-kernel - Re: [PATCH v3 3/5] m68k: add system call table generation support

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Date:   Mon, 15 Oct 2018 09:42:10 +0530
From:   Firoz Khan <firoz.khan@...aro.org>
To:     fthain@...egraphics.com.au
Cc:     Geert Uytterhoeven <geert@...ux-m68k.org>,
        linux-m68k <linux-m68k@...ts.linux-m68k.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Philippe Ombredanne <pombredanne@...b.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        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>,
        Arnd Bergmann <arnd@...db.de>,
        Deepa Dinamani <deepa.kernel@...il.com>,
        Marcin Juszkiewicz <marcin.juszkiewicz@...aro.org>
Subject: Re: [PATCH v3 3/5] m68k: add system call table generation support

Hi Finn,

On Tue, 2 Oct 2018 at 04:22, Finn Thain <fthain@...egraphics.com.au> wrote:
>
> On Mon, 1 Oct 2018, Firoz Khan wrote:
>
> > --- /dev/null
> > +++ b/arch/m68k/kernel/syscalls/syscallhdr.sh
> > @@ -0,0 +1,35 @@
> > +#!/bin/sh
>
> That's not accurate. These are bash scripts, not Bourne shell.
>
> If you run 'checkbashisms', you'll see that a few small changes are needed
> in order to gain standards compliance and portability.

Sure.

>
> Some untested suggestions:
>
> diff --git a/arch/m68k/kernel/syscalls/syscallhdr.sh b/arch/m68k/kernel/syscalls/syscallhdr.sh
> index e0e3108cfc7f..9811f82848e6 100644
> --- a/arch/m68k/kernel/syscalls/syscallhdr.sh
> +++ b/arch/m68k/kernel/syscalls/syscallhdr.sh
> @@ -18,17 +18,17 @@ grep -E "^[0-9A-Fa-fXx]+[[:space:]]+${my_abis}" "$in" | sort -n | (
>      nxt=0
>      while read nr abi name entry ; do
>         if [ -z "$offset" ]; then
> -           echo -e "#define __NR_${prefix}${name}\t$nr"
> +           echo "#define __NR_${prefix}${name} $nr"
>         else
> -           echo -e "#define __NR_${prefix}${name}\t($offset + $nr)"
> +           echo "#define __NR_${prefix}${name} ($offset + $nr)"
>         fi
>         nxt=$nr
> -       let nxt=nxt+1
> +       nxt=$((nxt+1))
>      done
>
>      echo ""
>      echo "#ifdef __KERNEL__"
> -    echo -e "#define __NR_syscalls\t$nxt"
> +    echo "#define __NR_syscalls        $nxt"
>      echo "#endif"
>      echo ""
>      echo "#endif /* ${fileguard} */"
> diff --git a/arch/m68k/kernel/syscalls/syscalltbl.sh b/arch/m68k/kernel/syscalls/syscalltbl.sh
> index d2635dea4e96..89ab047097ce 100644
> --- a/arch/m68k/kernel/syscalls/syscalltbl.sh
> +++ b/arch/m68k/kernel/syscalls/syscalltbl.sh
> @@ -13,7 +13,7 @@ emit() {
>
>      while [ $nxt -lt $nr ]; do
>         echo "__SYSCALL($nxt, sys_ni_syscall, )"
> -       let nxt=nxt+1
> +       nxt=$((nxt+1))
>      done
>
>      echo "__SYSCALL($nr, $entry, )"
> @@ -29,6 +29,6 @@ grep '^[0-9]' "$in" | sort -n | (
>      while read nr abi name entry ; do
>         emit $nxt $nr $entry
>         nxt=$nr
> -        let nxt=nxt+1
> +        nxt=$((nxt+1))
>      done
>  ) > "$out"

Thanks for your comments! I'll have a look into it.

Firoz
>
> --