Makefile: Parallize the build of root_image.

Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>

diff --git a/Makefile b/Makefile
index 9ed92620072a23e7f2f880bbb06811f78dd3ecee..e79f171c71d18493e565268f134e2a4b8d438b57 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -234,7 +234,7 @@ DOM0_DEP_LIST = linux-modules
 
 .PHONY: root_image-dist-nodep
 root_image-dist-nodep:  $(LINUX_SRC)/usr/gen_init_cpio
-       $(MAKE)  -C root_image
+       $(MAKE) -j$$(($(NCPUS) * 2)) -C root_image
        $(INSTALL_DIR) dist/common/
        $(INSTALL_DATA) root_image/dist/common/initramfs.cpio.gz dist/common/