linux-kernel - [PATCH] Clarify CONFIG_DEBUG

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Message-Id: <1391452183-2160-1-git-send-email-bp@alien8.de>
Date:	Mon,  3 Feb 2014 19:29:43 +0100
From:	Borislav Petkov <bp@...en8.de>
To:	LKML <linux-kernel@...r.kernel.org>
Cc:	X86 ML <x86@...nel.org>, Richard Weinberger <richard@....at>,
	Borislav Petkov <bp@...e.de>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>
Subject: [PATCH] Clarify CONFIG_DEBUG_INFO's bloaty nature

From: Borislav Petkov <bp@...e.de>

Hold down when it makes sense to enable CONFIG_DEBUG_INFO and when
CONFIG_KALLSYMS suffices.

Signed-off-by: Borislav Petkov <bp@...e.de>
Link: http://lkml.kernel.org/r/CA%2B55aFw_xs1tUteDrXz21QZB7BFk5p%2BF5NZ-SpV=CUVjeFwapA@mail.gmail.com
Cc: Andrew Morton <akpm@...ux-foundation.org>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>
---
 lib/Kconfig.debug | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index dbf94a7d25a8..9095c2078095 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -126,7 +126,11 @@ config DEBUG_INFO
 	  This adds debug symbols to the kernel and modules (gcc -g), and
 	  is needed if you intend to use kernel crashdump or binary object
 	  tools like crash, kgdb, LKCD, gdb, etc on the kernel.
-	  Say Y here only if you plan to debug the kernel.
+
+	  If you only want to have resolved symbols in kernel traces and
+	  are not going to need support for those tools above, you don't need
+	  to enable this as it is a huge bloat and build slowdown;
+	  enable CONFIG_KALLSYMS instead.
 
 	  If unsure, say N.
 
-- 
1.8.5.2.192.g7794a68

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