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    Subject[PATCH] 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: Steven Rostedt <srostedt@redhat.com>
    ---
    arch/powerpc/Kconfig | 1 +
    arch/sparc64/Kconfig | 1 +
    arch/x86/Kconfig | 1 +
    kernel/trace/Kconfig | 4 ++++
    4 files changed, 7 insertions(+)

    Index: linux-tip.git/arch/powerpc/Kconfig
    ===================================================================
    --- linux-tip.git.orig/arch/powerpc/Kconfig 2008-05-16 20:26:20.000000000 -0700
    +++ linux-tip.git/arch/powerpc/Kconfig 2008-05-16 20:27:47.000000000 -0700
    @@ -107,6 +107,7 @@ config PPC
    default y
    select HAVE_IDE
    select HAVE_IMMEDIATE
    + select HAVE_DYNAMIC_FTRACE
    select HAVE_FTRACE
    select HAVE_KPROBES
    select HAVE_KRETPROBES
    Index: linux-tip.git/arch/sparc64/Kconfig
    ===================================================================
    --- linux-tip.git.orig/arch/sparc64/Kconfig 2008-05-16 20:26:20.000000000 -0700
    +++ linux-tip.git/arch/sparc64/Kconfig 2008-05-16 20:27:24.000000000 -0700
    @@ -11,6 +11,7 @@ config SPARC
    config SPARC64
    bool
    default y
    + select HAVE_DYNAMIC_FTRACE
    select HAVE_FTRACE
    select HAVE_IDE
    select HAVE_LMB
    Index: linux-tip.git/arch/x86/Kconfig
    ===================================================================
    --- linux-tip.git.orig/arch/x86/Kconfig 2008-05-16 20:26:20.000000000 -0700
    +++ linux-tip.git/arch/x86/Kconfig 2008-05-16 20:27:32.000000000 -0700
    @@ -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
    Index: linux-tip.git/kernel/trace/Kconfig
    ===================================================================
    --- linux-tip.git.orig/kernel/trace/Kconfig 2008-05-16 20:28:11.000000000 -0700
    +++ linux-tip.git/kernel/trace/Kconfig 2008-05-16 20:35:07.000000000 -0700
    @@ -4,6 +4,9 @@
    config HAVE_FTRACE
    bool

    +config HAVE_DYNAMIC_FTRACE
    + bool
    +
    config TRACER_MAX_TRACE
    bool

    @@ -102,6 +105,7 @@ 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



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