From: Peter Oberparleiter Enable gcov profiling of the entire kernel on x86_64. Required changes include disabling profiling for: * arch/kernel/acpi/realmode and arch/kernel/boot/compressed: not linked to main kernel * arch/vdso, arch/kernel/vsyscall_64 and arch/kernel/hpet: profiling causes segfaults during boot (incompatible context) Signed-off-by: Peter Oberparleiter --- arch/x86/boot/Makefile | 1 + arch/x86/boot/compressed/Makefile | 1 + arch/x86/kernel/Makefile | 2 ++ arch/x86/kernel/acpi/realmode/Makefile | 1 + arch/x86/vdso/Makefile | 1 + kernel/gcov/Kconfig | 2 +- 6 files changed, 7 insertions(+), 1 deletion(-) Index: linux-2.6.30-rc6/kernel/gcov/Kconfig =================================================================== --- linux-2.6.30-rc6.orig/kernel/gcov/Kconfig 2009-05-19 12:41:26.000000000 +0200 +++ linux-2.6.30-rc6/kernel/gcov/Kconfig 2009-05-19 12:41:27.000000000 +0200 @@ -34,7 +34,7 @@ config GCOV_PROFILE_ALL bool "Profile entire Kernel" depends on GCOV_KERNEL - depends on S390 || X86_32 + depends on S390 || X86 default n ---help--- This options activates profiling for the entire kernel. Index: linux-2.6.30-rc6/arch/x86/kernel/acpi/realmode/Makefile =================================================================== --- linux-2.6.30-rc6.orig/arch/x86/kernel/acpi/realmode/Makefile 2009-05-19 12:27:33.000000000 +0200 +++ linux-2.6.30-rc6/arch/x86/kernel/acpi/realmode/Makefile 2009-05-19 12:41:27.000000000 +0200 @@ -42,6 +42,7 @@ $(call cc-option, -mpreferred-stack-boundary=2) KBUILD_CFLAGS += $(call cc-option, -m32) KBUILD_AFLAGS := $(KBUILD_CFLAGS) -D__ASSEMBLY__ +GCOV_PROFILE := n WAKEUP_OBJS = $(addprefix $(obj)/,$(wakeup-y)) Index: linux-2.6.30-rc6/arch/x86/boot/Makefile =================================================================== --- linux-2.6.30-rc6.orig/arch/x86/boot/Makefile 2009-05-19 12:27:33.000000000 +0200 +++ linux-2.6.30-rc6/arch/x86/boot/Makefile 2009-05-19 12:41:27.000000000 +0200 @@ -69,6 +69,7 @@ $(call cc-option, -mpreferred-stack-boundary=2) KBUILD_CFLAGS += $(call cc-option, -m32) KBUILD_AFLAGS := $(KBUILD_CFLAGS) -D__ASSEMBLY__ +GCOV_PROFILE := n $(obj)/bzImage: asflags-y := $(SVGA_MODE) Index: linux-2.6.30-rc6/arch/x86/boot/compressed/Makefile =================================================================== --- linux-2.6.30-rc6.orig/arch/x86/boot/compressed/Makefile 2009-05-19 12:27:33.000000000 +0200 +++ linux-2.6.30-rc6/arch/x86/boot/compressed/Makefile 2009-05-19 12:41:27.000000000 +0200 @@ -15,6 +15,7 @@ KBUILD_CFLAGS += $(call cc-option,-fno-stack-protector) KBUILD_AFLAGS := $(KBUILD_CFLAGS) -D__ASSEMBLY__ +GCOV_PROFILE := n LDFLAGS := -m elf_$(UTS_MACHINE) LDFLAGS_vmlinux := -T Index: linux-2.6.30-rc6/arch/x86/vdso/Makefile =================================================================== --- linux-2.6.30-rc6.orig/arch/x86/vdso/Makefile 2009-05-19 12:27:33.000000000 +0200 +++ linux-2.6.30-rc6/arch/x86/vdso/Makefile 2009-05-19 12:41:27.000000000 +0200 @@ -123,6 +123,7 @@ -Wl,-T,$(filter %.lds,$^) $(filter %.o,$^) VDSO_LDFLAGS = -fPIC -shared $(call ld-option, -Wl$(comma)--hash-style=sysv) +GCOV_PROFILE := n # # Install the unstripped copy of vdso*.so listed in $(vdso-install-y). Index: linux-2.6.30-rc6/arch/x86/kernel/Makefile =================================================================== --- linux-2.6.30-rc6.orig/arch/x86/kernel/Makefile 2009-05-19 12:27:33.000000000 +0200 +++ linux-2.6.30-rc6/arch/x86/kernel/Makefile 2009-05-19 12:41:27.000000000 +0200 @@ -24,6 +24,8 @@ CFLAGS_hpet.o := $(nostackp) CFLAGS_tsc.o := $(nostackp) CFLAGS_paravirt.o := $(nostackp) +GCOV_PROFILE_vsyscall_64.o := n +GCOV_PROFILE_hpet.o := n obj-y := process_$(BITS).o signal.o entry_$(BITS).o obj-y += traps.o irq.o irq_$(BITS).o dumpstack_$(BITS).o -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/