linux-kernel - Re: [PATCH v6 01/21] scripts/gdb: Add infrastructure

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Message-ID: <5270DF35.1040708@siemens.com>
Date:	Wed, 30 Oct 2013 11:28:05 +0100
From:	Jan Kiszka <jan.kiszka@...mens.com>
To:	Andi Kleen <andi@...stfloor.org>
CC:	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org,
	Jason Wessel <jason.wessel@...driver.com>,
	kgdb-bugreport@...ts.sourceforge.net,
	Tom Tromey <tromey@...hat.com>,
	Ben Widawsky <ben@...dawsk.net>, Borislav Petkov <bp@...e.de>,
	Tatiana Al-Chueyr Martins <tatiana.alchueyr@...il.com>,
	Michal Marek <mmarek@...e.cz>, linux-kbuild@...r.kernel.org
Subject: Re: [PATCH v6 01/21] scripts/gdb: Add infrastructure

On 2013-10-30 06:35, Andi Kleen wrote:
>> The loading mechanism is based on gdb loading for <objfile>-gdb.py when
>> opening <objfile>. Therefore, this places a corresponding link to the
>> main helper script into the output directory that contains vmlinux.
> 
>> This feature depends on CONFIG_DEBUG_INFO.
> 
> Could you make this a separate config option? Having the links for
> people who don't use gdb would be ugly.
> 

Like this?

diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 06344d9..d66a8f8 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -143,6 +143,17 @@ config DEBUG_INFO_REDUCED
 	  DEBUG_INFO build and compile times are reduced too.
 	  Only works with newer gcc versions.
 
+config GDB_SCRIPTS
+	bool "Provide GDB scripts for kernel debugging"
+	select DEBUG_INFO
+	help
+	  This creates the required links to GDB helper scripts in the
+	  build directory. If you load vmlinux into gdb, the helper
+	  scripts will be automatically imported by gdb as well, and
+	  additional functions are available to analyze a Linux kernel
+	  instance. See Documentation/gdb-kernel-debugging.txt for further
+	  details.
+
 config ENABLE_WARN_DEPRECATED
 	bool "Enable __deprecated logic"
 	default y

Will send an updated series soon, also adjusting the docs, just waiting
for potential further comments.

Jan

-- 
Siemens AG, Corporate Technology, CT RTC ITP SES-DE
Corporate Competence Center Embedded Linux
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