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Commit 677aa9f7 authored by Steven Rostedt's avatar Steven Rostedt Committed by Thomas Gleixner
Browse files

ftrace: add have dynamic ftrace config for archs 



Now that ftrace is being ported to other architectures, it has become
apparent that DYNAMIC_FTRACE is dependent on whether or not that
architecture implements dynamic ftrace. FTRACE itself may be ported to
an architecture without porting dynamic ftrace.

This patch adds HAVE_DYNAMIC_FTRACE to allow architectures to port ftrace
without having to also port the dynamic aspect as well.

Signed-off-by: default avatarSteven Rostedt <srostedt@redhat.com>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
parent 7fa09f24

arch/powerpc/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -105,6 +105,7 @@ config ARCH_NO_VIRT_TO_BUS 
config PPC

	bool

	default y

	select HAVE_DYNAMIC_FTRACE

	select HAVE_FTRACE

	select HAVE_IDE

	select HAVE_KPROBES

arch/sparc64/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -11,6 +11,7 @@ config SPARC 
config SPARC64

	bool

	default y

	select HAVE_DYNAMIC_FTRACE

	select HAVE_FTRACE

	select HAVE_IDE

	select HAVE_LMB

arch/x86/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -23,6 +23,7 @@ config X86 
	select HAVE_OPROFILE

	select HAVE_KPROBES

	select HAVE_KRETPROBES

	select HAVE_DYNAMIC_FTRACE

	select HAVE_FTRACE

	select HAVE_KVM if ((X86_32 && !X86_VOYAGER && !X86_VISWS && !X86_NUMAQ) || X86_64)

	select HAVE_ARCH_KGDB if !X86_VOYAGER

kernel/trace/Kconfig

+4 −0
Original line number Diff line number Diff line
@@ -4,6 +4,9 @@ 
config HAVE_FTRACE

	bool



config HAVE_DYNAMIC_FTRACE

	bool



config TRACER_MAX_TRACE

	bool
@@ -94,6 +97,7 @@ config CONTEXT_SWITCH_TRACER 
config DYNAMIC_FTRACE

	bool "enable/disable ftrace tracepoints dynamically"

	depends on FTRACE

	depends on HAVE_DYNAMIC_FTRACE

	default y

	help

         This option will modify all the calls to ftrace dynamically