On Mon, 8 Aug 2011 00:18:04 +0430 Amirali Shambayati wrote: > Would you say how you rebuild kernel? Sure, it's just a 'make' command: $ make -j4 ARCH=i386 O=X32 all > 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 *** _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
