linux-kernel - Re: [PATCH v8 12/13] module: Move kdb

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Date:   Tue, 22 Feb 2022 18:05:56 +0000
From:   Christophe Leroy <christophe.leroy@...roup.eu>
To:     Aaron Tomlin <atomlin@...hat.com>,
        "mcgrof@...nel.org" <mcgrof@...nel.org>,
        Jason Wessel <jason.wessel@...driver.com>,
        Daniel Thompson <daniel.thompson@...aro.org>
CC:     "cl@...ux.com" <cl@...ux.com>,
        "pmladek@...e.com" <pmladek@...e.com>,
        "mbenes@...e.cz" <mbenes@...e.cz>,
        "akpm@...ux-foundation.org" <akpm@...ux-foundation.org>,
        "jeyu@...nel.org" <jeyu@...nel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-modules@...r.kernel.org" <linux-modules@...r.kernel.org>,
        "void@...ifault.com" <void@...ifault.com>,
        "atomlin@...mlin.com" <atomlin@...mlin.com>,
        "allen.lkml@...il.com" <allen.lkml@...il.com>,
        "joe@...ches.com" <joe@...ches.com>,
        "msuchanek@...e.de" <msuchanek@...e.de>,
        "oleksandr@...alenko.name" <oleksandr@...alenko.name>,
        "kgdb-bugreport@...ts.sourceforge.net" 
        <kgdb-bugreport@...ts.sourceforge.net>
Subject: Re: [PATCH v8 12/13] module: Move kdb_modules list out of core code

+ Daniel and Jason.

The full series is available at 
https://patchwork.kernel.org/project/linux-modules/list/?series=616741&state=*

Le 22/02/2022 à 15:13, Aaron Tomlin a écrit :
> No functional change.
> 
> This patch migrates kdb_modules list to core kdb code
> since the list of added/or loaded modules is no longer
> private.
> 
> Signed-off-by: Aaron Tomlin <atomlin@...hat.com>

Reviewed-by: Christophe Leroy <christophe.leroy@...roup.eu>

> ---
>   kernel/debug/kdb/kdb_main.c    | 5 +++++
>   kernel/debug/kdb/kdb_private.h | 4 ----

This patch (and the cover letter) should be copied to KDB maintainers 
and KDB list

You can use the following command to findout who they are:

[chleroy@...0335 linux-powerpc]$ ./scripts/get_maintainer.pl -f 
kernel/debug/kdb/kdb_main.c
Jason Wessel <jason.wessel@...driver.com> (maintainer:KGDB / KDB 
/debug_core)
Daniel Thompson <daniel.thompson@...aro.org> (maintainer:KGDB / KDB 
/debug_core,commit_signer:11/14=79%)
Douglas Anderson <dianders@...omium.org> (reviewer:KGDB / KDB 
/debug_core,commit_signer:8/14=57%)
kgdb-bugreport@...ts.sourceforge.net (open list:KGDB / KDB /debug_core)
linux-kernel@...r.kernel.org (open list)


>   kernel/module/main.c           | 4 ----
>   3 files changed, 5 insertions(+), 8 deletions(-)
> 
> diff --git a/kernel/debug/kdb/kdb_main.c b/kernel/debug/kdb/kdb_main.c
> index 0852a537dad4..5369bf45c5d4 100644
> --- a/kernel/debug/kdb/kdb_main.c
> +++ b/kernel/debug/kdb/kdb_main.c
> @@ -59,6 +59,11 @@ EXPORT_SYMBOL(kdb_grepping_flag);
>   int kdb_grep_leading;
>   int kdb_grep_trailing;
>   
> +#ifdef CONFIG_MODULES
> +extern struct list_head modules;
> +static struct list_head *kdb_modules = &modules; /* kdb needs the list of modules */
> +#endif /* CONFIG_MODULES */
> +
>   /*
>    * Kernel debugger state flags
>    */
> diff --git a/kernel/debug/kdb/kdb_private.h b/kernel/debug/kdb/kdb_private.h
> index 0d2f9feea0a4..1f8c519a5f81 100644
> --- a/kernel/debug/kdb/kdb_private.h
> +++ b/kernel/debug/kdb/kdb_private.h
> @@ -226,10 +226,6 @@ extern void kdb_kbd_cleanup_state(void);
>   #define kdb_kbd_cleanup_state()
>   #endif /* ! CONFIG_KDB_KEYBOARD */
>   
> -#ifdef CONFIG_MODULES
> -extern struct list_head *kdb_modules;
> -#endif /* CONFIG_MODULES */
> -
>   extern char kdb_prompt_str[];
>   
>   #define	KDB_WORD_SIZE	((int)sizeof(unsigned long))
> diff --git a/kernel/module/main.c b/kernel/module/main.c
> index b8a59b5c3e3a..bcc4f7a82649 100644
> --- a/kernel/module/main.c
> +++ b/kernel/module/main.c
> @@ -108,10 +108,6 @@ static void mod_update_bounds(struct module *mod)
>   		__mod_update_bounds(mod->init_layout.base, mod->init_layout.size);
>   }
>   
> -#ifdef CONFIG_KGDB_KDB
> -struct list_head *kdb_modules = &modules; /* kdb needs the list of modules */
> -#endif /* CONFIG_KGDB_KDB */
> -
>   static void module_assert_mutex_or_preempt(void)
>   {
>   #ifdef CONFIG_LOCKDEP