cc: linux-sparse On Tue, Aug 04, 2009 at 11:15:11PM +0100, Russell King - ARM Linux wrote: > On Tue, Aug 04, 2009 at 06:03:22PM -0400, H Hartley Sweeten wrote: > > When compiling the kernel with sparse, in arch/arm/mm/copypage-v4wb.c > > I get the following error: > > > > arch/arm/mm/copypage-v4wb.c:25:13: error: attribute 'naked': unknown attribute > > Sparse doesn't understand the naked attribute. GCC does. > > > /* > > * it doesn't make sense on ARM (currently the only user of __naked) to trace > > * naked functions because then mcount is called without stack and frame pointer > > * being set up and there is no chance to restore the lr register to the value > > * before mcount was called. > > */ > > #define __naked __attribute__((naked)) notrace > > > > Is this macro actually correct? The compiler I am using is: > > Yes - naked instructions can't be traced, because they tend to have > entry/exit sequences which mcount won't understand. > > ------------------------------------------------------------------- > List admin: http://lists.arm.linux.org.uk/mailman/listinfo/linux-arm-kernel > FAQ: http://www.arm.linux.org.uk/mailinglists/faq.php > Etiquette: http://www.arm.linux.org.uk/mailinglists/etiquette.php > -- To unsubscribe from this list: send the line "unsubscribe linux-sparse" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
