From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932748AbbJ2Cjn (ORCPT ); Wed, 28 Oct 2015 22:39:43 -0400 Received: from szxga02-in.huawei.com ([119.145.14.65]:39194 "EHLO szxga02-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932638AbbJ2Cjm (ORCPT ); Wed, 28 Oct 2015 22:39:42 -0400 Message-ID: <563186C4.3020809@huawei.com> Date: Thu, 29 Oct 2015 10:39:00 +0800 From: "Wangnan (F)" User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:31.0) Gecko/20100101 Thunderbird/31.6.0 MIME-Version: 1.0 To: Arnaldo Carvalho de Melo , Jiri Olsa CC: Jiri Olsa , Linux Kernel Mailing List Subject: Re: tools/build: fixdep versus tools/lib/bpf References: <20151028163040.GA19695@kernel.org> <20151028201352.GA14076@krava.brq.redhat.com> <20151028203752.GD19695@kernel.org> <20151028204450.GA25553@krava.redhat.com> <20151028210125.GE19695@kernel.org> In-Reply-To: <20151028210125.GE19695@kernel.org> Content-Type: text/plain; charset="utf-8"; format=flowed Content-Transfer-Encoding: 7bit X-Originating-IP: [10.111.66.109] X-CFilter-Loop: Reflected Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 2015/10/29 5:01, Arnaldo Carvalho de Melo wrote: > Em Wed, Oct 28, 2015 at 09:44:50PM +0100, Jiri Olsa escreveu: >> On Wed, Oct 28, 2015 at 05:37:52PM -0300, Arnaldo Carvalho de Melo wrote: >>> Em Wed, Oct 28, 2015 at 09:13:52PM +0100, Jiri Olsa escreveu: >>>> On Wed, Oct 28, 2015 at 01:30:40PM -0300, Arnaldo Carvalho de Melo wrote: >>>>> Hi Jiri, Wang, >>>>> >>>>> I'm getting these while doing 'make -C tools/perf build-test': >>>>> >>>>> LD fixdep-in.o >>>>> LINK fixdep >>>>> /bin/sh: /home/acme/git/linux/tools/build/fixdep: Permission denied >>>>> make[6]: *** [bpf.o] Error 1 >>>>> make[5]: *** [libbpf-in.o] Error 2 >>>>> make[4]: *** [/home/acme/git/linux/tools/lib/bpf/libbpf.a] Error 2 >>>>> make[4]: *** Waiting for unfinished jobs.... >>>>> >>>>> >>>>> It happens at different tests, i.e. seems like a race somewhere in the >>>>> build system, can you take a look? It happens with my perf/ebpf branch. Never see this message before. Tried make build-test, unable to reproduce in my environment. Maybe my machine is not fast enough? >>>> could not reproduce, but looks like attached patch should help >>> I'll test this now, i.e. make it go thru a 'make -C tools/perf >>> build-test'. >>> >>> In the interest of speeding up things, please provide an explanation of >>> why this should be applied, so that I can add it to the changeset log. >>> >>> Thanks a bunch! >>> >> The fixdep tool needs to be built as the first binary. >> Libraries are built in paralel, so each of them needs >> to depend on fixdep target. > > I really need a faster machine, you provided the answer at this point: > > - make_tags_O: cd . && make -f Makefile O=/tmp/tmp.xfRz6THR6o > DESTDIR=/tmp/tmp.y0nuN0Fr9n tags > - make_cscope_O: cd . && make -f Makefile O=/tmp/tmp.O6phQXHU4z > DESTDIR=/tmp/tmp.5mdMeF1pH2 cscope > - tarpkg: ./tests/perf-targz-src-pkg . > - make -C tools/perf > - make -C /tools perf > > Almost there :-) So the problem is gone? Thanks to Jiri, and I'll add this to my local tree, as a separated patch first. Thank you. > - Arnaldo