* Makefile: - globally use -mprofile-kernel in case it's configured and available. * arch/powerpc/Kconfig / kernel/trace/Kconfig: - declare that ppc64le HAVE_MPROFILE_KERNEL and HAVE_DYNAMIC_FTRACE_WITH_REGS, and use it. Signed-off-by: Torsten Duwe <duwe@xxxxxxx> --- arch/powerpc/Kconfig | 2 ++ arch/powerpc/Makefile | 10 ++++++++++ kernel/trace/Kconfig | 5 +++++ 3 files changed, 17 insertions(+) diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index db49e0d..89b1a2a 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 if PPC64 && CPU_LITTLE_ENDIAN select HAVE_FUNCTION_TRACER select HAVE_FUNCTION_GRAPH_TRACER + select HAVE_MPROFILE_KERNEL if PPC64 && CPU_LITTLE_ENDIAN 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 96efd82..2f9b527 100644 --- a/arch/powerpc/Makefile +++ b/arch/powerpc/Makefile @@ -133,6 +133,16 @@ else CFLAGS-$(CONFIG_GENERIC_CPU) += -mcpu=powerpc64 endif +ifeq ($(CONFIG_PPC64),y) +ifdef CONFIG_HAVE_MPROFILE_KERNEL +CC_USING_MPROFILE_KERNEL := $(call cc-option,-mprofile-kernel) +ifdef CC_USING_MPROFILE_KERNEL +CC_FLAGS_FTRACE := -pg $(CC_USING_MPROFILE_KERNEL) +KBUILD_CPPFLAGS += -DCC_USING_MPROFILE_KERNEL +endif +endif +endif + CFLAGS-$(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 e45db6b..a138f6d 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 -- To unsubscribe from this list: send the line "unsubscribe live-patching" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html