From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932337AbaDVLUu (ORCPT ); Tue, 22 Apr 2014 07:20:50 -0400 Received: from mail-qg0-f43.google.com ([209.85.192.43]:49549 "EHLO mail-qg0-f43.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932096AbaDVLUq (ORCPT ); Tue, 22 Apr 2014 07:20:46 -0400 MIME-Version: 1.0 In-Reply-To: <16597012.pEkDc99HDN@wuerfel> References: <1397824031-4892-1-git-send-email-lftan@altera.com> <5354AD36.5090809@zytor.com> <16597012.pEkDc99HDN@wuerfel> Date: Tue, 22 Apr 2014 19:20:45 +0800 X-Google-Sender-Auth: DWPPIU4w6cMp9Js5BtjRplDHwc4 Message-ID: Subject: Re: [PATCH 00/28] nios2 Linux kernel port From: Ley Foon Tan To: Arnd Bergmann Cc: "H. Peter Anvin" , Linux-Arch , "linux-kernel@vger.kernel.org" , "linux-doc@vger.kernel.org" , cltang@codesourcery.com Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Apr 22, 2014 at 6:56 PM, Arnd Bergmann wrote: > On Tuesday 22 April 2014 18:37:11 Ley Foon Tan wrote: >> Hi Arnd and Peter Anvin, >> >> Other than 64-bit time_t, clock_t and suseconds_t, can you confirm >> that we don't need to have 64 bit off_t? See detail in link below. >> I can submit the patches for 64-bit time changes >> (include/asm-generic/posix_types.h and other archs) if everyone is >> agreed on this. > > Yes. Okay, will doing that. > >> Excerpt from https://lkml.org/lkml/2012/11/14/358 : >> "Obviously, we want to use 64-bit off_t, but this is achieved already >> through loff_t, which is used in all places in the asm-generic >> ABI anyway (the syscalls using off_t are stripped out). I don't >> think we want to have the other ones set to 64 bit on ARC or Meta, >> although I'm not 100% sure about ino_t and nlink_t. " > > This is all still true. You should have no syscall using 'off_t', > only loff_t. > > I still don't know whether we would want 32 or 64 bit ino_t and nlink_t > for new architectures. It seems it would gain very little, but have > a noticeable overhead. Anyone have comment on this? Chung-Lin (in CC list) is our nios2 toolchain maintainer. Do you have any comment for 32 or 64 bit ino_t and nlink_t? We will update the toolchain to support 64-bit time_t, so we hope that any other toolchain change can happen in one time. Thanks Regards Ley Foon