From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756204Ab3J2Nxz (ORCPT ); Tue, 29 Oct 2013 09:53:55 -0400 Received: from mail-pd0-f175.google.com ([209.85.192.175]:61164 "EHLO mail-pd0-f175.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753866Ab3J2Nxy (ORCPT ); Tue, 29 Oct 2013 09:53:54 -0400 Message-ID: <526FBDEF.8090109@gmail.com> Date: Tue, 29 Oct 2013 07:53:51 -0600 From: David Ahern User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.8; rv:24.0) Gecko/20100101 Thunderbird/24.0.1 MIME-Version: 1.0 To: Ingo Molnar CC: linux-kernel@vger.kernel.org, acme@ghostprotocols.net, fweisbec@gmail.com, peterz@infradead.org, jolsa@redhat.com, namhyung@kernel.org, xiaoguangrong@linux.vnet.ibm.com, runzhen@linux.vnet.ibm.com, Runzhen Wang Subject: Re: [PATCH 14/16] perf kvm: reuse some code of perf_kvm__timerfd_create() References: <1369527896-3650-1-git-send-email-dsahern@gmail.com> <1369527896-3650-15-git-send-email-dsahern@gmail.com> <20130912130849.GA23826@gmail.com> <5231C2EF.8080200@gmail.com> <20130912134058.GF23826@gmail.com> <20131029132304.GA22052@gmail.com> In-Reply-To: <20131029132304.GA22052@gmail.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 10/29/13 7:23 AM, Ingo Molnar wrote: > > * Ingo Molnar wrote: > >> * David Ahern wrote: >> >>> On 9/12/13 6:08 AM, Ingo Molnar wrote: >>>> >>>> btw., I tried to build perf on a really old distro that has no timerfd.h, >>>> and got: >>> >>> Right. I hit that last week or so with RHEL5 as a build server. >>> >>> timerfd was introduced before perf so any system with perf capability >>> will also have timerfd. So the problem is strictly building perf on an >>> older system. [...] >> >> I'm booting new kernels on an old system and I'm building it there. >> >> So it's new kernel, new perf source and binary, old userspace. > > Btw., this build failure is still there today: Right, I put together a patch on Sept 14th and got distracted. I'll rebase to top of tree, update per the new feature tests and send it out today. David