From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756940AbbCRVWo (ORCPT ); Wed, 18 Mar 2015 17:22:44 -0400 Received: from aserp1040.oracle.com ([141.146.126.69]:51059 "EHLO aserp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750719AbbCRVWl (ORCPT ); Wed, 18 Mar 2015 17:22:41 -0400 Message-ID: <5509EC9D.2060506@oracle.com> Date: Wed, 18 Mar 2015 15:22:37 -0600 From: David Ahern User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.10; rv:31.0) Gecko/20100101 Thunderbird/31.5.0 MIME-Version: 1.0 To: David Miller CC: linux-kernel@vger.kernel.org, sparclinux@vger.kernel.org Subject: Re: maps mismatch in /proc/kcore for sparc References: <5509AE36.8040902@oracle.com> <20150318.154359.1325469409095627387.davem@davemloft.net> <5509D8C7.5080504@oracle.com> <20150318.161403.1392052398222912621.davem@davemloft.net> In-Reply-To: <20150318.161403.1392052398222912621.davem@davemloft.net> Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit X-Source-IP: aserv0021.oracle.com [141.146.126.233] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 3/18/15 2:14 PM, David Miller wrote: > Oh I see, you're using older sources which don't have: > > commit abaf3787ac26ba33e2f75e76b1174c32254c25b0 > Author: Paul Gortmaker > Date: Thu Jan 23 15:55:45 2014 -0800 > > fs/proc: don't use module_init for non-modular core code Interesting. # git describe abaf3787ac26ba33e2f75e76b1174c32254c25b0 v3.13-4322-gabaf3787ac26 I am running 3.18 and that patch has been applied to the tree. Looking at 4.0.0-rc3 and I do see the 0-length problem. Perhaps another defect is the root cause? Regardless the below works. David > > And that explains everything, I'll submit the following: > > diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig > index 96ac69c..efb00ec 100644 > --- a/arch/sparc/Kconfig > +++ b/arch/sparc/Kconfig > @@ -86,6 +86,9 @@ config ARCH_DEFCONFIG > default "arch/sparc/configs/sparc32_defconfig" if SPARC32 > default "arch/sparc/configs/sparc64_defconfig" if SPARC64 > > +config ARCH_PROC_KCORE_TEXT > + def_bool y > + > config IOMMU_HELPER > bool > default y if SPARC64 > diff --git a/arch/sparc/mm/init_64.c b/arch/sparc/mm/init_64.c > index 3ea267c..4ca0d6b 100644 > --- a/arch/sparc/mm/init_64.c > +++ b/arch/sparc/mm/init_64.c > @@ -2820,7 +2820,7 @@ static int __init report_memory(void) > > return 0; > } > -device_initcall(report_memory); > +arch_initcall(report_memory); > > #ifdef CONFIG_SMP > #define do_flush_tlb_kernel_range smp_flush_tlb_kernel_range >