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    SubjectRe: [PATCH v3 0/8] ftrace with regs + live patching for ppc64 LE (ABI v2)
      * Makefile:
    - globally use -mprofile-kernel in case it's configured.
    * arch/powerpc/Kconfig / kernel/trace/Kconfig:
    - declare that ppc64 HAVE_MPROFILE_KERNEL and
    HAVE_DYNAMIC_FTRACE_WITH_REGS, and use it.

    Signed-off-by: Torsten Duwe <duwe@suse.de>
    ---
    arch/powerpc/Kconfig | 2 ++
    arch/powerpc/Makefile | 7 +++++++
    kernel/trace/Kconfig | 5 +++++
    3 files changed, 14 insertions(+)

    diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
    index 9a7057e..0e6011c 100644
    --- a/arch/powerpc/Kconfig
    +++ b/arch/powerpc/Kconfig
    @@ -97,8 +97,10 @@ config PPC
    select OF_RESERVED_MEM
    select HAVE_FTRACE_MCOUNT_RECORD
    select HAVE_DYNAMIC_FTRACE
    + select HAVE_DYNAMIC_FTRACE_WITH_REGS
    select HAVE_FUNCTION_TRACER
    select HAVE_FUNCTION_GRAPH_TRACER
    + select HAVE_MPROFILE_KERNEL
    select SYSCTL_EXCEPTION_TRACE
    select ARCH_WANT_OPTIONAL_GPIOLIB
    select VIRT_TO_BUS if !PPC64
    diff --git a/arch/powerpc/Makefile b/arch/powerpc/Makefile
    index b9b4af2..25d0034 100644
    --- a/arch/powerpc/Makefile
    +++ b/arch/powerpc/Makefile
    @@ -133,6 +133,13 @@ else
    CFLAGS-$(CONFIG_GENERIC_CPU) += -mcpu=powerpc64
    endif

    +ifeq ($(CONFIG_PPC64),y)
    +ifdef CONFIG_HAVE_MPROFILE_KERNEL
    +CC_FLAGS_FTRACE := -pg $(call cc-option,-mprofile-kernel)
    +KBUILD_CPPFLAGS += -DCC_USING_MPROFILE_KERNEL
    +endif
    +endif
    +
    CFLAGS-$(CONFIG_CELL_CPU) += $(call cc-option,-mcpu=cell)
    CFLAGS-$(CONFIG_POWER4_CPU) += $(call cc-option,-mcpu=power4)
    CFLAGS-$(CONFIG_POWER5_CPU) += $(call cc-option,-mcpu=power5)
    diff --git a/kernel/trace/Kconfig b/kernel/trace/Kconfig
    index 1153c43..dbcb635 100644
    --- a/kernel/trace/Kconfig
    +++ b/kernel/trace/Kconfig
    @@ -52,6 +52,11 @@ config HAVE_FENTRY
    help
    Arch supports the gcc options -pg with -mfentry

    +config HAVE_MPROFILE_KERNEL
    + bool
    + help
    + Arch supports the gcc options -pg with -mprofile-kernel
    +
    config HAVE_C_RECORDMCOUNT
    bool
    help
    --
    1.8.5.6


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