On Thu, Dec 03, 2015 at 05:20:08PM +0100, Petr Mladek wrote: > > IMHO, we should not define CC_USING_MPROFILE_KERNEL if it is not > supported by the compiler. Yes, true. > I took inspiration from the CC_USING_FENTRY handling in > linux/Makefile. The following code worked for me: > > CC_USING_MPROFILE_KERNEL := $(call cc-option, -pg -mprofile-kernel -DCC_USING_MPROFILE_KERNEL) > CC_FLAGS_FTRACE := $(CC_USING_MPROFILE_KERNEL) > KBUILD_CPPFLAGS += $(CC_USING_MPROFILE_KERNEL) Excellent! > I just do not understand why we need to add the flags also > to KBUILD_CPPFLAGS. It seems that they are duplicated > when compiling kernel/livepatch/core.o. But livepatching > did not work without it. I wonder if you found the culprit. Some assembler-with-cpp files also need to be notified? My plan is to first get this working reliably and then fine tune. Torsten -- To unsubscribe from this list: send the line "unsubscribe live-patching" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
