--- arch/x86/kernel/Makefile

+++ arch/x86/kernel/Makefile

@@ -11,6 +11,8 @@ ifdef CONFIG_FUNCTION_TRACER

CFLAGS_REMOVE_tsc.o = -pg

CFLAGS_REMOVE_rtc.o = -pg

CFLAGS_REMOVE_paravirt-spinlocks.o = -pg

+CFLAGS_REMOVE_pvclock.o = -pg

+CFLAGS_REMOVE_kvmclock.o = -pg

CFLAGS_REMOVE_ftrace.o = -pg

CFLAGS_REMOVE_early_printk.o = -pg

endif