linux-kernel - Re: [PATCH v2 2/2] kgdb/treewide: constify struct kgdb_arch arch_kgdb

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Date:   Thu, 6 Dec 2018 22:12:52 +0100
From:   Borislav Petkov <bp@...en8.de>
To:     Christophe Leroy <christophe.leroy@....fr>
Cc:     Vineet Gupta <vgupta@...opsys.com>,
        Russell King <linux@...linux.org.uk>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will.deacon@....com>,
        Yoshinori Sato <ysato@...rs.sourceforge.jp>,
        Richard Kuo <rkuo@...eaurora.org>,
        Michal Simek <monstr@...str.eu>,
        Ralf Baechle <ralf@...ux-mips.org>,
        Paul Burton <paul.burton@...s.com>,
        James Hogan <jhogan@...nel.org>,
        Ley Foon Tan <lftan@...era.com>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        Michael Ellerman <mpe@...erman.id.au>,
        Rich Felker <dalias@...c.org>,
        "David S. Miller" <davem@...emloft.net>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, x86@...nel.org,
        Jason Wessel <jason.wessel@...driver.com>,
        Daniel Thompson <daniel.thompson@...aro.org>,
        Douglas Anderson <dianders@...omium.org>,
        Randy Dunlap <rdunlap@...radead.org>,
        "Gustavo A. R. Silva" <gustavo@...eddedor.com>,
        linux-snps-arc@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        uclinux-h8-devel@...ts.sourceforge.jp,
        linux-hexagon@...r.kernel.org, linux-mips@...r.kernel.org,
        nios2-dev@...ts.rocketboards.org, linuxppc-dev@...ts.ozlabs.org,
        linux-sh@...r.kernel.org, sparclinux@...r.kernel.org,
        kgdb-bugreport@...ts.sourceforge.net
Subject: Re: [PATCH v2 2/2] kgdb/treewide: constify struct kgdb_arch
 arch_kgdb_ops

On Thu, Dec 06, 2018 at 08:07:40PM +0000, Christophe Leroy wrote:
> checkpatch.pl reports the following:
> 
>   WARNING: struct kgdb_arch should normally be const
>   #28: FILE: arch/mips/kernel/kgdb.c:397:
>   +struct kgdb_arch arch_kgdb_ops = {
> 
> This report makes sense, as all other ops struct, this
> one should also be const. This patch does the change.
> 
> Cc: Vineet Gupta <vgupta@...opsys.com>
> Cc: Russell King <linux@...linux.org.uk>
> Cc: Catalin Marinas <catalin.marinas@....com>
> Cc: Will Deacon <will.deacon@....com>
> Cc: Yoshinori Sato <ysato@...rs.sourceforge.jp>
> Cc: Richard Kuo <rkuo@...eaurora.org>
> Cc: Michal Simek <monstr@...str.eu>
> Cc: Ralf Baechle <ralf@...ux-mips.org>
> Cc: Paul Burton <paul.burton@...s.com>
> Cc: James Hogan <jhogan@...nel.org>
> Cc: Ley Foon Tan <lftan@...era.com>
> Cc: Benjamin Herrenschmidt <benh@...nel.crashing.org>
> Cc: Paul Mackerras <paulus@...ba.org>
> Cc: Michael Ellerman <mpe@...erman.id.au>
> Cc: Rich Felker <dalias@...c.org>
> Cc: "David S. Miller" <davem@...emloft.net>
> Cc: Thomas Gleixner <tglx@...utronix.de>
> Cc: Ingo Molnar <mingo@...hat.com>
> Cc: Borislav Petkov <bp@...en8.de>
> Cc: x86@...nel.org
> Acked-by: Daniel Thompson <daniel.thompson@...aro.org>
> Acked-by: Paul Burton <paul.burton@...s.com>
> Signed-off-by: Christophe Leroy <christophe.leroy@....fr>
> ---
>  v2: Added CCs to all maintainers/supporters identified by get_maintainer.pl and Acks from Daniel and Paul.
> 
>  arch/arc/kernel/kgdb.c        | 2 +-
>  arch/arm/kernel/kgdb.c        | 2 +-
>  arch/arm64/kernel/kgdb.c      | 2 +-
>  arch/h8300/kernel/kgdb.c      | 2 +-
>  arch/hexagon/kernel/kgdb.c    | 2 +-
>  arch/microblaze/kernel/kgdb.c | 2 +-
>  arch/mips/kernel/kgdb.c       | 2 +-
>  arch/nios2/kernel/kgdb.c      | 2 +-
>  arch/powerpc/kernel/kgdb.c    | 2 +-
>  arch/sh/kernel/kgdb.c         | 2 +-
>  arch/sparc/kernel/kgdb_32.c   | 2 +-
>  arch/sparc/kernel/kgdb_64.c   | 2 +-
>  arch/x86/kernel/kgdb.c        | 2 +-
>  include/linux/kgdb.h          | 2 +-
>  14 files changed, 14 insertions(+), 14 deletions(-)

...

> diff --git a/arch/x86/kernel/kgdb.c b/arch/x86/kernel/kgdb.c
> index 8e36f249646e..e7effc02f13c 100644
> --- a/arch/x86/kernel/kgdb.c
> +++ b/arch/x86/kernel/kgdb.c
> @@ -804,7 +804,7 @@ int kgdb_arch_remove_breakpoint(struct kgdb_bkpt *bpt)
>  				  (char *)bpt->saved_instr, BREAK_INSTR_SIZE);
>  }
>  
> -struct kgdb_arch arch_kgdb_ops = {
> +const struct kgdb_arch arch_kgdb_ops = {
>  	/* Breakpoint instruction: */
>  	.gdb_bpt_instr		= { 0xcc },
>  	.flags			= KGDB_HW_BREAKPOINT,

For the x86 bits:

Acked-by: Borislav Petkov <bp@...e.de>

-- 
Regards/Gruss,
    Boris.

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