Would you say how you rebuild kernel? On Sun, Aug 7, 2011 at 10:34 PM, Randy Dunlap <rdunlap@xxxxxxxxxxxx> wrote: > On Sun, 7 Aug 2011 21:39:12 +0430 Amirali Shambayati wrote: > >> Hi all, >> Since I want to evaluate performance improvements by changing just one >> file in kernel(noop-iosched) and compiling kernel is too much >> time-consuming, I want to know that if I compile kernel for more than >> one time, does it take similar time to first time? >> >> I use following commands. If I don't use "make-kpkg clean" for next >> times, does it just compile the files which have been modified or it >> compile whole kernel package again? >> >> make-kpkg clean >> fakeroot make-kpkg --initrd --append-to-version=-some-string-here >> kernel-image kernel-headers > > Since I never use make-kpkg, I can only tell you that when I modified > block/noop-iosched.c and rebuilt the kernel, here is what was rebuilt: > > GEN /lnx/src/NEXT/linux-next-20110805/X32/Makefile > CHK include/linux/version.h > Using /lnx/src/NEXT/linux-next-20110805 as source for kernel > CHK include/generated/utsrelease.h > CALL /lnx/src/NEXT/linux-next-20110805/scripts/checksyscalls.sh > CHK include/generated/compile.h > CHK kernel/config_data.h > CC block/noop-iosched.o > LD block/built-in.o > LD vmlinux.o > MODPOST vmlinux.o > GEN .version > CHK include/generated/compile.h > UPD include/generated/compile.h > CC init/version.o > LD init/built-in.o > LD .tmp_vmlinux1 > KSYM .tmp_kallsyms1.S > AS .tmp_kallsyms1.o > LD .tmp_vmlinux2 > KSYM .tmp_kallsyms2.S > AS .tmp_kallsyms2.o > LD vmlinux > SYSMAP System.map > SYSMAP .tmp_System.map > Building modules, stage 2. > VOFFSET arch/x86/boot/voffset.h > CC arch/x86/boot/version.o > OBJCOPY arch/x86/boot/compressed/vmlinux.bin > LZMA arch/x86/boot/compressed/vmlinux.bin.lzma > MODPOST 575 modules > MKPIGGY arch/x86/boot/compressed/piggy.S > AS arch/x86/boot/compressed/piggy.o > LD arch/x86/boot/compressed/vmlinux > ZOFFSET arch/x86/boot/zoffset.h > OBJCOPY arch/x86/boot/vmlinux.bin > AS arch/x86/boot/header.o > LD arch/x86/boot/setup.elf > OBJCOPY arch/x86/boot/setup.bin > BUILD arch/x86/boot/bzImage > Setup is 14972 bytes (padded to 15360 bytes). > System is 1287 kB > CRC 64ecf4d > Kernel: arch/x86/boot/bzImage is ready (#18) > > > so it's a minimal rebuild, not a full kernel rebuild. > > --- > ~Randy > *** Remember to use Documentation/SubmitChecklist when testing your code *** > -- Amirali Shambayati Bachelor Student Computer Engineering Department Sharif University of Technology Tehran, Iran _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
