Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751497AbdIQTtP (ORCPT ); Sun, 17 Sep 2017 15:49:15 -0400 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:43326 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751254AbdIQTtO (ORCPT ); Sun, 17 Sep 2017 15:49:14 -0400 Date: Sun, 17 Sep 2017 12:49:10 -0700 From: "Paul E. McKenney" To: Randy Dunlap Cc: LKML , "linux-doc@vger.kernel.org" , Jonathan Corbet Subject: Re: rcu kernel-doc issues (4.14-rc1) Reply-To: paulmck@linux.vnet.ibm.com References: <20170917044145.GZ3521@linux.vnet.ibm.com> <20170917174716.GA3611@linux.vnet.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.21 (2010-09-15) X-TM-AS-GCONF: 00 x-cbid: 17091719-2213-0000-0000-0000021CA592 X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00007754; HX=3.00000241; KW=3.00000007; PH=3.00000004; SC=3.00000229; SDB=6.00918452; UDB=6.00461362; IPR=6.00698678; BA=6.00005593; NDR=6.00000001; ZLA=6.00000005; ZF=6.00000009; ZB=6.00000000; ZP=6.00000000; ZH=6.00000000; ZU=6.00000002; MB=3.00017189; XFM=3.00000015; UTC=2017-09-17 19:49:12 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 17091719-2214-0000-0000-000057939A2A Message-Id: <20170917194910.GC3521@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:,, definitions=2017-09-17_12:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 suspectscore=0 malwarescore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1707230000 definitions=main-1709170289 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 5316 Lines: 143 On Sun, Sep 17, 2017 at 10:57:42AM -0700, Randy Dunlap wrote: > On 09/17/17 10:47, Paul E. McKenney wrote: > > On Sat, Sep 16, 2017 at 09:41:45PM -0700, Paul E. McKenney wrote: > >> On Sat, Sep 16, 2017 at 06:26:04PM -0700, Randy Dunlap wrote: > >>> On 4.14-rc1, I am seeing lots of warnings on rcu kernel-doc: > >>> > >>> .. kernel-doc:: include/linux/rcupdate.h > >>> :external: > >>> ./Documentation/core-api/kernel-api.rst:357: ERROR: Error in "kernel-doc" directive: > >>> unknown option: "external". > >> > >> $ grep external include/linux/rcupdate.h > >> * by a single external-to-structure RCU-protected pointer, then you may > >> * external-to-structure pointer -after- you have completely initialized > >> > >> Do these comments somehow qualify as an "external" option? If so, how > >> do I tell kernel-doc to ignore them? Or must I reword them to avoid > >> the word "external"? > >> > >>> .. kernel-doc:: include/linux/rcupdate_wait.h > >>> :external: > >>> ./Documentation/core-api/kernel-api.rst:360: ERROR: Error in "kernel-doc" directive: > >>> unknown option: "external". > >> > >> $ grep external include/linux/rcupdate_wait.h > >> > >> There is no occurrence of the string "external" in this file. So this > >> "external" option is unknown to me as well. So, any hints on how I > >> should interpret these error messages? > > > > And thanks to Akira Yokosawa for pointing out my confusion in reading > > these error messages. The line numbers of course apply to the file > > Documentation/core-api/kernel-api.rst rather than the various RCU > > C-language source files. > > > > The patch below removes the error messages for me. Is this what you > > had in mind? (Might need other options at some point, but somewhere > > to start.) > > > > Yes, much better. Thanks. > > Just some missing kernel-doc on parameters mostly remaining: I have now fixed a number of these, thank you. Any hints for how to represent code samples within a "/**" comment? /home/git/linux-2.6-tip/include/linux/rcupdate.h:559: ERROR: Unexpected indentation. /home/git/linux-2.6-tip/include/linux/rcupdate.h:563: WARNING: Block quote ends without a blank line; unexpected unindent. /home/git/linux-2.6-tip/include/linux/rcupdate.h:777: ERROR: Unexpected indentation. /home/git/linux-2.6-tip/include/linux/rcupdate.h:778: WARNING: Block quote ends without a blank line; unexpected unindent. Thanx, Paul > ../include/linux/rcupdate.h:818: warning: No description found for parameter 'p' > ../include/linux/rcupdate.h:818: warning: No description found for parameter 'v' > ../include/linux/rcupdate.h:826: warning: No description found for parameter 'p' > ../include/linux/rcupdate.h:826: warning: No description found for parameter 'v' > ../include/linux/srcu.h:95: warning: No description found for parameter 'sp' > ../kernel/rcu/srcutree.c:873: warning: No description found for parameter 'rhp' > ../kernel/rcu/srcutree.c:873: warning: Excess function parameter 'head' description in 'call_srcu' > ../include/linux/rculist.h:302: warning: Incorrect use of kernel-doc format: * list_first_or_null_rcu - get the first element from a list > ../include/linux/rculist.h:317: warning: No description found for parameter 'ptr' > ../include/linux/rculist.h:317: warning: No description found for parameter 'type' > ../include/linux/rculist.h:317: warning: No description found for parameter 'member' > ../kernel/rcu/sync.c:94: warning: No description found for parameter 'rsp' > ../kernel/rcu/sync.c:162: warning: No description found for parameter 'rcu' > ../kernel/rcu/sync.c:162: warning: Excess function parameter 'rsp' description in 'rcu_sync_func' > > > > > ------------------------------------------------------------------------ > > > > diff --git a/Documentation/core-api/kernel-api.rst b/Documentation/core-api/kernel-api.rst > > index 8282099e0cbf..30b2666bf494 100644 > > --- a/Documentation/core-api/kernel-api.rst > > +++ b/Documentation/core-api/kernel-api.rst > > @@ -352,44 +352,44 @@ Read-Copy Update (RCU) > > ---------------------- > > > > .. kernel-doc:: include/linux/rcupdate.h > > - :external: > > + :export > > > > .. kernel-doc:: include/linux/rcupdate_wait.h > > - :external: > > + :export > > > > .. kernel-doc:: include/linux/rcutree.h > > - :external: > > + :export > > > > .. kernel-doc:: kernel/rcu/tree.c > > - :external: > > + :export > > > > .. kernel-doc:: kernel/rcu/tree_plugin.h > > - :external: > > + :export > > > > .. kernel-doc:: kernel/rcu/tree_exp.h > > - :external: > > + :export > > > > .. kernel-doc:: kernel/rcu/update.c > > - :external: > > + :export > > > > .. kernel-doc:: include/linux/srcu.h > > - :external: > > + :export > > > > .. kernel-doc:: kernel/rcu/srcutree.c > > - :external: > > + :export > > > > .. kernel-doc:: include/linux/rculist_bl.h > > - :external: > > + :export > > > > .. kernel-doc:: include/linux/rculist.h > > - :external: > > + :export > > > > .. kernel-doc:: include/linux/rculist_nulls.h > > - :external: > > + :export > > > > .. kernel-doc:: include/linux/rcu_sync.h > > - :external: > > + :export > > > > .. kernel-doc:: kernel/rcu/sync.c > > - :external: > > + :export > > > > > > -- > > > -- > ~Randy >