linux-kernel - [PATCH] Unhide DEBUG_RODATA if EXPERT, even if DEBUG

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Date:	Sun, 5 Jun 2011 01:37:41 -0700
From:	Josh Triplett <josh@...htriplett.org>
To:	Ingo Molnar <mingo@...e.hu>, Thomas Gleixner <tglx@...utronix.de>,
	Sam Ravnborg <sam@...nborg.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	linux-kernel@...r.kernel.org
Subject: [PATCH] Unhide DEBUG_RODATA if EXPERT, even if DEBUG_KERNEL=n

CONFIG_DEBUG_RODATA defaults to y.  Embedded systems might want to
disable this to save space; however, disabling it requires enabling
CONFIG_DEBUG_KERNEL to see it.  Unhide it for CONFIG_EXPERT=y as well,
so it shows up as an option for embedded users without having to turn on
CONFIG_DEBUG_KERNEL.

Signed-off-by: Josh Triplett <josh@...htriplett.org>
---

On a related note, I noticed while making this patch that
DEBUG_RODATA_TEST defaults to y, as of commit
72370f2a5b227bd3817593a6b15ea3f53f51dfcb; however, the description says
"If in doubt, say N".  Should the default change, or should the
description?  DEBUG_RODATA_TEST seems like the kind of thing that should
default to n.

 arch/x86/Kconfig.debug |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/arch/x86/Kconfig.debug b/arch/x86/Kconfig.debug
index c0f8a5c..8653d8b 100644
--- a/arch/x86/Kconfig.debug
+++ b/arch/x86/Kconfig.debug
@@ -81,7 +81,7 @@ config X86_PTDUMP
 config DEBUG_RODATA
 	bool "Write protect kernel read-only data structures"
 	default y
-	depends on DEBUG_KERNEL
+	depends on DEBUG_KERNEL || EXPERT
 	---help---
 	  Mark the kernel read-only data as write-protected in the pagetables,
 	  in order to catch accidental (and incorrect) writes to such const
-- 
1.7.5.3

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