diff options
Diffstat (limited to 'arch/x86/vdso/Makefile')
| -rw-r--r-- | arch/x86/vdso/Makefile | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/arch/x86/vdso/Makefile b/arch/x86/vdso/Makefile index b6552b189bcd..bef0bc962400 100644 --- a/arch/x86/vdso/Makefile +++ b/arch/x86/vdso/Makefile @@ -11,7 +11,7 @@ vdso-install-$(VDSO32-y) += $(vdso32-images) # files to link into the vdso -vobjs-y := vdso-note.o vclock_gettime.o vgetcpu.o vvar.o +vobjs-y := vdso-note.o vclock_gettime.o vgetcpu.o # files to link into kernel obj-$(VDSO64-y) += vma.o vdso.o @@ -37,11 +37,24 @@ $(obj)/%.so: OBJCOPYFLAGS := -S $(obj)/%.so: $(obj)/%.so.dbg FORCE $(call if_changed,objcopy) +# +# Don't omit frame pointers for ease of userspace debugging, but do +# optimize sibling calls. +# CFL := $(PROFILING) -mcmodel=small -fPIC -O2 -fasynchronous-unwind-tables -m64 \ - $(filter -g%,$(KBUILD_CFLAGS)) $(call cc-option, -fno-stack-protector) + $(filter -g%,$(KBUILD_CFLAGS)) $(call cc-option, -fno-stack-protector) \ + -fno-omit-frame-pointer -foptimize-sibling-calls $(vobjs): KBUILD_CFLAGS += $(CFL) +# +# vDSO code runs in userspace and -pg doesn't help with profiling anyway. +# +CFLAGS_REMOVE_vdso-note.o = -pg +CFLAGS_REMOVE_vclock_gettime.o = -pg +CFLAGS_REMOVE_vgetcpu.o = -pg +CFLAGS_REMOVE_vvar.o = -pg + targets += vdso-syms.lds obj-$(VDSO64-y) += vdso-syms.lds |