From mboxrd@z Thu Jan 1 00:00:00 1970 From: Keith Owens Date: Tue, 22 Jun 2004 22:27:35 +0000 Subject: Re: Does parallel make work for modules? Message-Id: <27002.1087943255@ocs3.ocs.com.au> List-Id: In-Reply-To: Your message of "Tue, 22 Jun 2004 15:08:13 MST." <20040622220813.GA306@lucon.org> References: <20040622220813.GA306@lucon.org> In-Reply-To: <20040622220813.GA306@lucon.org> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: "H. J. Lu" Cc: linux kernel , linux ia64 kernel On Tue, 22 Jun 2004 15:08:13 -0700, "H. J. Lu" wrote: >When building 2.6.7 on a 4way Linux/ia64, "make -j4 modules" doesn't >spawn 4 jobs. I got > > 5756 pts/0 S 0:00 make -s -j4 modules > 5868 pts/0 S 0:00 make -f scripts/Makefile.build obj=fs > 7240 pts/0 S 0:00 make -f scripts/Makefile.build obj=fs/nfs > 7269 pts/0 S 0:00 /bin/sh -c set -e; ? gcc -Wp,-MD,fs/nfs/.pagelist.o. > 7270 pts/0 S 0:00 gcc -Wp,-MD,fs/nfs/.pagelist.o.d -nostdinc -iwithprefi > 7271 pts/0 S 0:00 /usr/gcc-3.4/libexec/gcc/ia64-unknown-linux-gnu/3.4.1/ > 7272 pts/0 R 0:00 as -x -o fs/nfs/pagelist.o - > >2.4 kernel module build work fine. Any ideas? Works for me, GNU Make version 3.79.1 building 2.6.7 on ia64. make -j8 modules gives a pstree of bash(2475)---make(29483)-+-make(29806)---make(30111)---make(30112)---sh(30113)---gcc(30114)-+-as(30116) | `-cc1(30115) `-make(29857)-+-make(29938)---sh(30153)---gcc(30154)-+-as(30156) | `-cc1(30155) |-make(30103)-+-sh(30104)---gcc(30105)-+-as(30107) | | `-cc1(30106) | `-sh(30146)---gcc(30147)-+-as(30149) | `-cc1(30148) `-make(30130)---sh(30131)---gcc(30132)-+-as(30134) `-cc1(30133) Not the full blown 8 way that I asked for, but that is an artifact of using recursive make instead of a single top level Makefile with all the dependencies.