@@ -115,6 +115,13 @@ ifneq ($(CONFIG_XMON)$(CONFIG_KEXEC),)
obj-y += ppc_save_regs.o
endif
+# Disable GCOV in odd or sensitive code
+GCOV_PROFILE_prom_init.o := n
+GCOV_PROFILE_ftrace.o := n
+GCOV_PROFILE_machine_kexec_64.o := n
+GCOV_PROFILE_machine_kexec_32.o := n
+GCOV_PROFILE_kprobes.o := n
+
extra-$(CONFIG_PPC_FPU) += fpu.o
extra-$(CONFIG_ALTIVEC) += vector.o
extra-$(CONFIG_PPC64) += entry_64.o
@@ -12,6 +12,7 @@ endif
targets := $(obj-vdso32) vdso32.so vdso32.so.dbg
obj-vdso32 := $(addprefix $(obj)/, $(obj-vdso32))
+GCOV_PROFILE := n
EXTRA_CFLAGS := -shared -fno-common -fno-builtin
EXTRA_CFLAGS += -nostdlib -Wl,-soname=linux-vdso32.so.1 \
@@ -7,6 +7,8 @@ obj-vdso64 = sigtramp.o gettimeofday.o datapage.o cacheflush.o note.o
targets := $(obj-vdso64) vdso64.so vdso64.so.dbg
obj-vdso64 := $(addprefix $(obj)/, $(obj-vdso64))
+GCOV_PROFILE := n
+
EXTRA_CFLAGS := -shared -fno-common -fno-builtin
EXTRA_CFLAGS += -nostdlib -Wl,-soname=linux-vdso64.so.1 \
$(call ld-option, -Wl$(comma)--hash-style=sysv)
@@ -2,6 +2,8 @@
subdir-ccflags-$(CONFIG_PPC_WERROR) := -Werror
+GCOV_PROFILE := n
+
ifdef CONFIG_PPC64
EXTRA_CFLAGS += -mno-minimal-toc
endif
@@ -34,7 +34,7 @@ config GCOV_KERNEL
config GCOV_PROFILE_ALL
bool "Profile entire Kernel"
depends on GCOV_KERNEL
- depends on S390 || X86
+ depends on S390 || X86 || (PPC && EXPERIMENTAL)
default n
---help---
This options activates profiling for the entire kernel.
Make it possible to enable GCOV code coverage measurement on powerpc. Lightly tested on 64-bit, seems to work as expected. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> --- arch/powerpc/kernel/Makefile | 7 +++++++ arch/powerpc/kernel/vdso32/Makefile | 1 + arch/powerpc/kernel/vdso64/Makefile | 2 ++ arch/powerpc/xmon/Makefile | 2 ++ kernel/gcov/Kconfig | 2 +- 5 files changed, 13 insertions(+), 1 deletions(-)