linux-kernel - Re: [PATCH] kdb: Remove redundant module related references

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Date:   Wed, 9 Mar 2022 12:06:40 +0000
From:   Daniel Thompson <daniel.thompson@...aro.org>
To:     Aaron Tomlin <atomlin@...hat.com>
Cc:     mcgrof@...nel.org, christophe.leroy@...roup.eu, hch@...radead.org,
        cl@...ux.com, mbenes@...e.cz, akpm@...ux-foundation.org,
        jeyu@...nel.org, linux-kernel@...r.kernel.org,
        linux-modules@...r.kernel.org, void@...ifault.com,
        atomlin@...mlin.com, allen.lkml@...il.com, joe@...ches.com,
        msuchanek@...e.de, oleksandr@...alenko.name,
        jason.wessel@...driver.com, pmladek@...e.com
Subject: Re: [PATCH] kdb: Remove redundant module related references

On Tue, Mar 08, 2022 at 10:52:03AM +0000, Aaron Tomlin wrote:
> Hi Luis, Christoph, Daniel,
> 
> Is this patch ok or would you rather another iteration of the series?
> Either way is fine for me. Thanks.

Another iteration makes more sense to me.

The removal of kdb_modules is semantically part of your module clean
up patch set and should certainly be included in it.

The removal of the spurious #include's in other kdb files is a
good change but it is fully independent of the module rework. AFAICT
those fixes are good with or without your changes. This suggests
these changes can be separate from the main patch set.


Daniel.

> 
> 
> No functional change.
> 
> There is no need to include linux/module.h.
> This patch addresses the above. Furthermore, we remove the list of known
> loaded modules i.e. stored in 'kdb_modules', since it is now redundant.
> 
> Fixes: 260681b3763f ("module: Move kdb module related code out of main kdb code")
> Signed-off-by: Aaron Tomlin <atomlin@...hat.com>
> ---
>  kernel/debug/kdb/kdb_io.c       | 1 -
>  kernel/debug/kdb/kdb_keyboard.c | 1 -
>  kernel/debug/kdb/kdb_private.h  | 4 ----
>  kernel/debug/kdb/kdb_support.c  | 1 -
>  4 files changed, 7 deletions(-)
> 
> diff --git a/kernel/debug/kdb/kdb_io.c b/kernel/debug/kdb/kdb_io.c
> index 6735ac36b718..67d3c48a1522 100644
> --- a/kernel/debug/kdb/kdb_io.c
> +++ b/kernel/debug/kdb/kdb_io.c
> @@ -9,7 +9,6 @@
>   * Copyright (c) 2009 Wind River Systems, Inc.  All Rights Reserved.
>   */
>  
> -#include <linux/module.h>
>  #include <linux/types.h>
>  #include <linux/ctype.h>
>  #include <linux/kernel.h>
> diff --git a/kernel/debug/kdb/kdb_keyboard.c b/kernel/debug/kdb/kdb_keyboard.c
> index f877a0a0d7cf..f87c750d3eb3 100644
> --- a/kernel/debug/kdb/kdb_keyboard.c
> +++ b/kernel/debug/kdb/kdb_keyboard.c
> @@ -11,7 +11,6 @@
>  #include <linux/kdb.h>
>  #include <linux/keyboard.h>
>  #include <linux/ctype.h>
> -#include <linux/module.h>
>  #include <linux/io.h>
>  
>  /* Keyboard Controller Registers on normal PCs. */
> 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/debug/kdb/kdb_support.c b/kernel/debug/kdb/kdb_support.c
> index df2bface866e..08229ffb6b5e 100644
> --- a/kernel/debug/kdb/kdb_support.c
> +++ b/kernel/debug/kdb/kdb_support.c
> @@ -17,7 +17,6 @@
>  #include <linux/stddef.h>
>  #include <linux/vmalloc.h>
>  #include <linux/ptrace.h>
> -#include <linux/module.h>
>  #include <linux/highmem.h>
>  #include <linux/hardirq.h>
>  #include <linux/delay.h>
> -- 
> 2.34.1
>