linux-kernel - [PATCH 1/2] tracing/kprobes: make Kconfig dependencies generic

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Message-ID: <20100210162517.GB6933@osiris.boeblingen.de.ibm.com>
Date:	Wed, 10 Feb 2010 17:25:17 +0100
From:	Heiko Carstens <heiko.carstens@...ibm.com>
To:	Masami Hiramatsu <mhiramat@...hat.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Ingo Molnar <mingo@...e.hu>
Cc:	Martin Schwidefsky <schwidefsky@...ibm.com>,
	linux-kernel@...r.kernel.org
Subject: [PATCH 1/2] tracing/kprobes: make Kconfig dependencies generic

From: Heiko Carstens <heiko.carstens@...ibm.com>

KPROBES_EVENT actually depends on the regs and stack access API (b1cf540f)
and not on x86.
So introduce a new config option which architectures can select if they
have the API implemented and switch x86.

Signed-off-by: Heiko Carstens <heiko.carstens@...ibm.com>
---
 arch/Kconfig         |    3 +++
 arch/x86/Kconfig     |    1 +
 kernel/trace/Kconfig |    2 +-
 3 files changed, 5 insertions(+), 1 deletion(-)

--- a/arch/Kconfig
+++ b/arch/Kconfig
@@ -121,6 +121,9 @@ config HAVE_DMA_ATTRS
 config USE_GENERIC_SMP_HELPERS
 	bool
 
+config HAVE_REGS_AND_STACK_ACCESS_API
+	bool
+
 config HAVE_CLK
 	bool
 	help
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -45,6 +45,7 @@ config X86
 	select HAVE_GENERIC_DMA_COHERENT if X86_32
 	select HAVE_EFFICIENT_UNALIGNED_ACCESS
 	select USER_STACKTRACE_SUPPORT
+	select HAVE_REGS_AND_STACK_ACCESS_API
 	select HAVE_DMA_API_DEBUG
 	select HAVE_KERNEL_GZIP
 	select HAVE_KERNEL_BZIP2
--- a/kernel/trace/Kconfig
+++ b/kernel/trace/Kconfig
@@ -449,7 +449,7 @@ config BLK_DEV_IO_TRACE
 
 config KPROBE_EVENT
 	depends on KPROBES
-	depends on X86
+	depends on HAVE_REGS_AND_STACK_ACCESS_API
 	bool "Enable kprobes-based dynamic events"
 	select TRACING
 	default y
--
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