From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.6 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, URIBL_BLACK,USER_AGENT_SANE_2 autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 57526C4BA10 for ; Wed, 26 Feb 2020 11:30:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 2857720637 for ; Wed, 26 Feb 2020 11:30:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728134AbgBZLak convert rfc822-to-8bit (ORCPT ); Wed, 26 Feb 2020 06:30:40 -0500 Received: from 4.mo69.mail-out.ovh.net ([46.105.42.102]:38474 "EHLO 4.mo69.mail-out.ovh.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727974AbgBZLak (ORCPT ); Wed, 26 Feb 2020 06:30:40 -0500 X-Greylist: delayed 6593 seconds by postgrey-1.27 at vger.kernel.org; Wed, 26 Feb 2020 06:30:38 EST Received: from player779.ha.ovh.net (unknown [10.110.103.177]) by mo69.mail-out.ovh.net (Postfix) with ESMTP id CFAB3868E2 for ; Wed, 26 Feb 2020 10:01:50 +0100 (CET) Received: from kaod.org (lns-bzn-46-82-253-208-248.adsl.proxad.net [82.253.208.248]) (Authenticated sender: groug@kaod.org) by player779.ha.ovh.net (Postfix) with ESMTPSA id 0A2DBFBF0C51; Wed, 26 Feb 2020 09:01:06 +0000 (UTC) Date: Wed, 26 Feb 2020 10:01:02 +0100 From: Greg Kurz To: "Alastair D'Silva" Cc: "'Baoquan He'" , "'Alastair D'Silva'" , "'Aneesh Kumar K . V'" , "'Oliver O'Halloran'" , "'Benjamin Herrenschmidt'" , "'Paul Mackerras'" , "'Michael Ellerman'" , "'Frederic Barrat'" , "'Andrew Donnellan'" , "'Arnd Bergmann'" , "'Greg Kroah-Hartman'" , "'Dan Williams'" , "'Vishal Verma'" , "'Dave Jiang'" , "'Ira Weiny'" , "'Andrew Morton'" , "'Mauro Carvalho Chehab'" , "'David S. Miller'" , "'Rob Herring'" , "'Anton Blanchard'" , "'Krzysztof Kozlowski'" , "'Mahesh Salgaonkar'" , "'Madhavan Srinivasan'" , "=?UTF-8?B?J0PDqWRyaWM=?= Le Goater'" , "'Anju T Sudhakar'" , "'Hari Bathini'" , "'Thomas Gleixner'" , "'Nicholas Piggin'" , "'Masahiro Yamada'" , "'Alexey Kardashevskiy'" , , , , Subject: Re: [PATCH v3 04/27] ocxl: Remove unnecessary externs Message-ID: <20200226100102.0aab7dda@bahia.home> In-Reply-To: <4d49801d5ec7e$7a3e8610$6ebb9230$@d-silva.org> References: <20200221032720.33893-1-alastair@au1.ibm.com> <20200221032720.33893-5-alastair@au1.ibm.com> <20200226081447.GH4937@MiWiFi-R3L-srv> <4d49801d5ec7e$7a3e8610$6ebb9230$@d-silva.org> X-Mailer: Claws Mail 3.17.4 (GTK+ 2.24.32; x86_64-redhat-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8BIT X-Ovh-Tracer-Id: 3746431942902978839 X-VR-SPAMSTATE: OK X-VR-SPAMSCORE: -100 X-VR-SPAMCAUSE: gggruggvucftvghtrhhoucdtuddrgedugedrleefgdduvdelucetufdoteggodetrfdotffvucfrrhhofhhilhgvmecuqfggjfdpvefjgfevmfevgfenuceurghilhhouhhtmecuhedttdenucesvcftvggtihhpihgvnhhtshculddquddttddmnecujfgurhepfffhvffukfgjfhfogggtgfesthhqredtredtjeenucfhrhhomhepifhrvghgucfmuhhriicuoehgrhhouhhgsehkrghougdrohhrgheqnecukfhppedtrddtrddtrddtpdekvddrvdehfedrvddtkedrvdegkeenucevlhhushhtvghrufhiiigvpedtnecurfgrrhgrmhepmhhouggvpehsmhhtphdqohhuthdphhgvlhhopehplhgrhigvrhejjeelrdhhrgdrohhvhhdrnhgvthdpihhnvghtpedtrddtrddtrddtpdhmrghilhhfrhhomhepghhrohhugheskhgrohgurdhorhhgpdhrtghpthhtoheplhhinhhugidqkhgvrhhnvghlsehvghgvrhdrkhgvrhhnvghlrdhorhhg Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 26 Feb 2020 19:26:34 +1100 "Alastair D'Silva" wrote: > > -----Original Message----- > > From: Baoquan He > > Sent: Wednesday, 26 February 2020 7:15 PM > > To: Alastair D'Silva > > Cc: alastair@d-silva.org; Aneesh Kumar K . V > > ; Oliver O'Halloran ; > > Benjamin Herrenschmidt ; Paul Mackerras > > ; Michael Ellerman ; Frederic > > Barrat ; Andrew Donnellan ; > > Arnd Bergmann ; Greg Kroah-Hartman > > ; Dan Williams ; > > Vishal Verma ; Dave Jiang > > ; Ira Weiny ; Andrew Morton > > ; Mauro Carvalho Chehab > > ; David S. Miller ; > > Rob Herring ; Anton Blanchard ; > > Krzysztof Kozlowski ; Mahesh Salgaonkar > > ; Madhavan Srinivasan > > ; Cédric Le Goater ; Anju T > > Sudhakar ; Hari Bathini > > ; Thomas Gleixner ; Greg > > Kurz ; Nicholas Piggin ; Masahiro > > Yamada ; Alexey Kardashevskiy > > ; linux-kernel@vger.kernel.org; linuxppc- > > dev@lists.ozlabs.org; linux-nvdimm@lists.01.org; linux-mm@kvack.org > > Subject: Re: [PATCH v3 04/27] ocxl: Remove unnecessary externs > > > > On 02/21/20 at 02:26pm, Alastair D'Silva wrote: > > > From: Alastair D'Silva > > > > > > Function declarations don't need externs, remove the existing ones so > > > they are consistent with newer code > > > > > > Signed-off-by: Alastair D'Silva > > > --- > > > arch/powerpc/include/asm/pnv-ocxl.h | 32 ++++++++++++++--------------- > > > include/misc/ocxl.h | 6 +++--- > > > 2 files changed, 18 insertions(+), 20 deletions(-) > > > > > > diff --git a/arch/powerpc/include/asm/pnv-ocxl.h > > > b/arch/powerpc/include/asm/pnv-ocxl.h > > > index 0b2a6707e555..b23c99bc0c84 100644 > > > --- a/arch/powerpc/include/asm/pnv-ocxl.h > > > +++ b/arch/powerpc/include/asm/pnv-ocxl.h > > > @@ -9,29 +9,27 @@ > > > #define PNV_OCXL_TL_BITS_PER_RATE 4 > > > #define PNV_OCXL_TL_RATE_BUF_SIZE > > ((PNV_OCXL_TL_MAX_TEMPLATE+1) * PNV_OCXL_TL_BITS_PER_RATE / 8) > > > > > > -extern int pnv_ocxl_get_actag(struct pci_dev *dev, u16 *base, u16 > > *enabled, > > > - u16 *supported); > > > > It works w or w/o extern when declare functions. Searching 'extern' > > under include can find so many functions with 'extern' adding. Do we have > a > > explicit standard if we should add or remove 'exter' in function > declaration? > > > > I have no objection to this patch, just want to make clear so that I can > handle > > it w/o confusion. > > > > Thanks > > Baoquan > > > > For the OpenCAPI driver, we have settled on not having 'extern' on > functions. > > I don't think I've seen a standard that supports or refutes this, but it > does not value add. > FWIW this is a warning condition for checkpatch: $ ./scripts/checkpatch.pl --strict -f include/misc/ocxl.h [...] CHECK: extern prototypes should be avoided in .h files #176: FILE: include/misc/ocxl.h:176: +extern int ocxl_afu_irq_alloc(struct ocxl_context *ctx, int *irq_id); [...]