linux-kernel - [tip:perf/urgent] kprobes: Fix Kconfig dependency

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Date:	Mon, 13 Sep 2010 19:54:47 GMT
From:	tip-bot for Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, hpa@...or.com, mingo@...hat.com,
	randy.dunlap@...cle.com, davem@...emloft.net,
	anil.s.keshavamurthy@...el.com, ananth@...ibm.com,
	masami.hiramatsu.pt@...achi.com, akpm@...ux-foundation.org,
	tglx@...utronix.de, felipe.contreras@...il.com, mingo@...e.hu
Subject: [tip:perf/urgent] kprobes: Fix Kconfig dependency

Commit-ID:  05ed160e89baf7f5fb3432d527fec467d2493626
Gitweb:     http://git.kernel.org/tip/05ed160e89baf7f5fb3432d527fec467d2493626
Author:     Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>
AuthorDate: Mon, 13 Sep 2010 19:25:41 +0900
Committer:  Ingo Molnar <mingo@...e.hu>
CommitDate: Mon, 13 Sep 2010 20:41:31 +0200

kprobes: Fix Kconfig dependency

Fix Kconfig dependency among Kprobes, optprobe and kallsyms.

Kprobes uses kallsyms_lookup for finding target function and
checking instruction boundary, thus CONFIG_KPROBES should select
CONFIG_KALLSYMS.

Optprobe is an optional feature which is supported on x86 arch,
and it also uses kallsyms_lookup for checking instructions in
the target function. Since KALLSYMS_ALL just adds symbols of
kernel variables, it doesn't need to select KALLSYMS_ALL.

Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>
Acked-by: Randy Dunlap <randy.dunlap@...cle.com>,
Cc: Ananth N Mavinakayanahalli <ananth@...ibm.com>
Cc: Felipe Contreras <felipe.contreras@...il.com>
Cc: Randy Dunlap <randy.dunlap@...cle.com>
Cc: Ananth N Mavinakayanahalli <ananth@...ibm.com>
Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@...el.com>
Cc: David S. Miller <davem@...emloft.net>
Cc: akpm <akpm@...ux-foundation.org>
LKML-Reference: <20100913102541.20260.85700.stgit@...236.sdl.hitachi.co.jp>
Signed-off-by: Ingo Molnar <mingo@...e.hu>
---
 arch/Kconfig |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/Kconfig b/arch/Kconfig
index 4877a8c..fe48fc7 100644
--- a/arch/Kconfig
+++ b/arch/Kconfig
@@ -32,8 +32,9 @@ config HAVE_OPROFILE
 
 config KPROBES
 	bool "Kprobes"
-	depends on KALLSYMS && MODULES
+	depends on MODULES
 	depends on HAVE_KPROBES
+	select KALLSYMS
 	help
 	  Kprobes allows you to trap at almost any kernel address and
 	  execute a callback function.  register_kprobe() establishes
@@ -45,7 +46,6 @@ config OPTPROBES
 	def_bool y
 	depends on KPROBES && HAVE_OPTPROBES
 	depends on !PREEMPT
-	select KALLSYMS_ALL
 
 config HAVE_EFFICIENT_UNALIGNED_ACCESS
 	bool
--
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