On Thu, Nov 7, 2013 at 1:20 PM, Stephen Boyd <sb...@codeaurora.org> wrote: > If we're running on a v7 ARM CPU, detect if the CPU supports the > sdiv/udiv instructions and replace the signed and unsigned > division library functions with an sdiv/udiv instruction.
[snip] > diff --git a/arch/arm/lib/Makefile b/arch/arm/lib/Makefile > index bd454b0..6ed6496 100644 > --- a/arch/arm/lib/Makefile > +++ b/arch/arm/lib/Makefile > @@ -15,6 +15,9 @@ lib-y := backtrace.o changebit.o csumipv6.o > csumpartial.o \ > io-readsb.o io-writesb.o io-readsl.o io-writesl.o \ > call_with_stack.o > > +lib-$(CONFIG_CPU_V7) += div-v7.o > +CFLAGS_div-v7.o := -march=armv7-a Won't this fail to build if the compiler doesn't have armv7-a support. Perhaps we don't care about compilers that old. Rob -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
