[PATCH 2/3] tracing/kprobes: Make Kconfig dependencies generic

[Frederic Weisbecker <fweisbec@gmail.com>]

From: Heiko Carstens <heiko.carstens@de.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@de.ibm.com>
Acked-by: Masami Hiramatsu <mhiramat@redhat.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
LKML-Reference: <20100210162517.GB6933@osiris.boeblingen.de.ibm.com>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
---
 arch/Kconfig         |    3 +++
 arch/x86/Kconfig     |    1 +
 kernel/trace/Kconfig |    2 +-
 3 files changed, 5 insertions(+), 1 deletions(-)

diff --git a/arch/Kconfig b/arch/Kconfig
index 9d055b4..04e3aa7 100644
--- 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
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 55298e8..07baa12 100644
--- 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
diff --git a/kernel/trace/Kconfig b/kernel/trace/Kconfig
index 6c22d8a..40fef55 100644
--- a/kernel/trace/Kconfig
+++ b/kernel/trace/Kconfig
@@ -451,7 +451,7 @@ 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
-- 
1.6.2.3