Hi Michael, Sorry -- was off since last week. On 2017/08/15 08:04PM, Michael Ellerman wrote: > Michael Ellerman <m...@ellerman.id.au> writes: > > > "Naveen N. Rao" <naveen.n....@linux.vnet.ibm.com> writes: > > > >> diff --git a/arch/powerpc/xmon/Makefile b/arch/powerpc/xmon/Makefile > >> index 0b2f771593eb..5f95af64cb8f 100644 > >> --- a/arch/powerpc/xmon/Makefile > >> +++ b/arch/powerpc/xmon/Makefile > >> @@ -7,6 +7,19 @@ UBSAN_SANITIZE := n > >> > >> ccflags-$(CONFIG_PPC64) := $(NO_MINIMAL_TOC) > >> > >> +ifdef CONFIG_FUNCTION_TRACER > >> +CFLAGS_REMOVE_xmon.o = -mno-sched-epilog $(CC_FLAGS_FTRACE) > >> +CFLAGS_REMOVE_nonstdio.o = -mno-sched-epilog $(CC_FLAGS_FTRACE) > >> +ifdef CONFIG_XMON_DISASSEMBLY > >> +CFLAGS_REMOVE_ppc-dis.o = -mno-sched-epilog $(CC_FLAGS_FTRACE) > >> +CFLAGS_REMOVE_ppc-opc.o = -mno-sched-epilog $(CC_FLAGS_FTRACE) > >> +ifdef CONFIG_SPU_BASE > >> +CFLAGS_REMOVE_spu-dis.o = -mno-sched-epilog $(CC_FLAGS_FTRACE) > >> +CFLAGS_REMOVE_spu-opc.o = -mno-sched-epilog $(CC_FLAGS_FTRACE) > >> +endif > >> +endif > >> +endif > > > > Urk. > > > > We want to disable it for everything in the directory, so can you do > > something like: > > > > ORIG_CFLAGS := $(KBUILD_CFLAGS) > > KBUILD_CFLAGS = $(subst $(CC_FLAGS_FTRACE),,$(ORIG_CFLAGS)) > > Yes: > > # Disable ftrace for the entire directory > ORIG_CFLAGS := $(KBUILD_CFLAGS) > KBUILD_CFLAGS = $(subst -mno-sched-epilog,,$(subst > $(CC_FLAGS_FTRACE),,$(ORIG_CFLAGS))) > > Seems to work.
Nice -- I had looked for a generic CFLAGS_REMOVE variant, but didn't find that. This is much nicer. Thanks, Naveen
