Excellent!
I've actually been thinking it would be really nice to be able to do
parallel builds throughout the entire build system.
Please apply.
Cheers, -Brian
Erich Focht wrote:
>Hi Brian,
>
>here's a patch for parallel kernel builds. It reduces the build time
>significantly on SMP machines (as expected).
>
>Regards,
>Erich
>
>
>
>------------------------------------------------------------------------
>
>--- make.d/kernel.rul.orig 2005-07-27 19:29:16.000000000 +0200
>+++ make.d/kernel.rul 2005-07-27 19:34:00.000000000 +0200
>@@ -126,6 +126,9 @@
> $(SI_INSTALL) -m 644 $(LINUX_CONFIG) \
> $(BOOT_BIN_DEST)/config
>
>+# determine number of CPUs of current machine for parallel build
>+NCPUS = $(shell grep -c ^processor /proc/cpuinfo)
>+
> # build the kernel that autoinstall clients will boot from during
> # autoinstallation
> PHONY += kernel
>@@ -135,11 +138,11 @@
> $(LINUX_IMAGE): $(SRC_DIR)/patched_kernel-stamp $(INITRD_DIR)/initrd.img
> cp $(TOPDIR)/initrd_source/initrd.img \
> ${LINUX_SRC}/arch/ppc64/boot/ramdisk.image.gz
>- $(MAKE) -C $(LINUX_SRC) $(LINUX_TARGET)
>+ $(MAKE) -C $(LINUX_SRC) -j $(NCPUS) $(LINUX_TARGET)
> mkdir -p $(TOPDIR)/tmp
> else
> $(LINUX_IMAGE): $(SRC_DIR)/patched_kernel-stamp
>- $(MAKE) -C $(LINUX_SRC) $(LINUX_TARGET)
>+ $(MAKE) -C $(LINUX_SRC) -j $(NCPUS) $(LINUX_TARGET)
> mkdir -p $(TOPDIR)/tmp
> endif
>
>@@ -172,7 +175,7 @@
>
> $(SRC_DIR)/modules_build-stamp: $(LINUX_IMAGE)
> rm -fr $(TOPDIR)/tmp/kernel_modules
>- $(MAKE) -C $(LINUX_SRC) modules
>+ $(MAKE) -C $(LINUX_SRC) -j $(NCPUS) modules
> touch $(SRC_DIR)/modules_build-stamp
>
> PHONY += kernel_clean
>
>
--
Brian Elliott Finley
Mobile: 630.631.6621
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