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From: Joe Perches <joe@perches.com>
To: Mauro Carvalho Chehab <mchehab@kernel.org>
Cc: Bart Van Assche <bvanassche@acm.org>,
	ksummit <ksummit-discuss@lists.linuxfoundation.org>,
	linux-nvdimm <linux-nvdimm@lists.01.org>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	Rob Herring <robherring2@gmail.com>,
	Dmitry Vyukov <dvyukov@google.com>,
	Steve French <stfrench@microsoft.com>,
	"Tobin C. Harding" <me@tobin.cc>
Subject: Re: [Ksummit-discuss] [PATCH v2 0/3] Maintainer Entry Profiles
Date: Fri, 13 Sep 2019 13:33:14 -0700
Message-ID: <8be2df9936fb405ffaee75d6e24bbac0e938a653.camel@perches.com> (raw)
In-Reply-To: <20190913161731.6e3405a3@coco.lan>

On Fri, 2019-09-13 at 16:17 -0300, Mauro Carvalho Chehab wrote:
> Em Fri, 13 Sep 2019 11:42:38 -0700
> Joe Perches <joe@perches.com> escreveu:
[]
> > Just fyi:  for an x86-64 defconfig with gcc 8.3
> > 
> > $ { make clean ; make defconfig ; make -j4 W=1 ; } > make.log 2>&1
> > 
> > There are ~300 W=1 for non kernel-doc -W<foo> warnings.
> > 
> > $ grep -i -P -oh '\[\-W[\w\-]+\]' make.log |sort | uniq -c | sort -rn
> >     163 [-Wmissing-prototypes]
> >      69 [-Wunused-but-set-variable]
> >      16 [-Wempty-body]
> >      10 [-Wtype-limits]
> >       6 [-Woverride-init]
> >       2 [-Wstringop-truncation]
> >       2 [-Wcast-function-type]
> >       1 [-Wunused-but-set-parameter]
> 
> On my eyes, it doesn't sound too much.

In general, I agree and most of these are pretty
trivial to remove.  It'd just take some time to
remove most of the missing-prototypes and
unused-but-set warnings before being able to
enable the warnings at the default W=0.

> I suspect that, 
> with gcc-9, it should produce more warnings, though.

It doesn't though.
At least not so far as I can tell.
gcc-9.1 produces the same output.

$ { make clean ; make defconfig ; make CC=/usr/bin/gcc-9 -j4 W=1 V=1 ; } > make_gcc9.log 2>&1
$  grep -i -P -oh '\[\-W[\w\-]+\]' make_gcc9.log | sort | uniq -c | sort -rn
    163 [-Wmissing-prototypes]
     69 [-Wunused-but-set-variable]
     16 [-Wempty-body]
     10 [-Wtype-limits]
      6 [-Woverride-init]
      2 [-Wstringop-truncation]
      2 [-Wcast-function-type]
      1 [-Wunused-but-set-parameter]


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Thread overview: 52+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-09-11 15:48 Dan Williams
2019-09-11 15:48 ` [PATCH v2 1/3] MAINTAINERS: Reclaim the P: tag for Maintainer Entry Profile Dan Williams
2019-09-13 15:37   ` [Ksummit-discuss] " Mauro Carvalho Chehab
2019-09-11 15:48 ` [PATCH v2 2/3] Maintainer Handbook: " Dan Williams
2019-09-11 17:34   ` [Ksummit-discuss] " Verma, Vishal L
2019-09-16 12:35   ` Jani Nikula
2019-10-01 13:55   ` Jonathan Corbet
2019-10-01 18:17     ` Martin K. Petersen
2019-11-07 20:13     ` Jonathan Corbet
2019-11-08  2:41       ` Dan Williams
2019-09-11 15:48 ` [PATCH v2 3/3] libnvdimm, MAINTAINERS: " Dan Williams
2019-09-11 17:42   ` [Ksummit-discuss] " Vishal Verma
2019-09-11 17:45   ` Dave Jiang
2019-09-11 18:43   ` [Ksummit-discuss] " Dan Carpenter
2019-09-11 22:11     ` Jens Axboe
2019-09-12  7:41       ` Dan Williams
2019-09-12  8:24         ` Miguel Ojeda
2019-09-12 10:18           ` Joe Perches
2019-09-12 11:02             ` Joe Perches
2019-09-12 14:17               ` Dan Williams
2019-09-12 14:51                 ` Joe Perches
2019-09-12 14:42             ` Miguel Ojeda
2019-09-13  7:09       ` Jonathan Corbet
2019-09-13 11:48         ` Dan Carpenter
2019-09-13 12:18           ` Dan Williams
2019-09-13 15:00           ` Randy Dunlap
2019-09-13 15:46             ` Rob Herring
2019-09-13 16:42               ` Joe Perches
2019-09-13 19:32                 ` Rob Herring
2019-09-13 17:57             ` Geert Uytterhoeven
2019-09-16 12:42           ` Jani Nikula
     [not found]           ` <20190917161608.GA12866@ziepe.ca>
2019-09-17 21:59             ` Dan Williams
2019-09-13 21:44       ` Martin K. Petersen
2019-09-16  7:01         ` Dan Carpenter
2019-09-16 17:08           ` Martin K. Petersen
2019-09-13  2:11     ` Aneesh Kumar K.V
2019-09-13  5:00       ` Greg KH
2019-09-11 20:30   ` Joe Perches
2019-09-11 16:40 ` [PATCH v2 0/3] Maintainer Entry Profiles Martin K. Petersen
2019-09-12 13:31   ` [Ksummit-discuss] " Bart Van Assche
2019-09-12 15:34     ` Joe Perches
2019-09-12 20:01       ` Bart Van Assche
2019-09-12 20:34         ` Joe Perches
2019-09-13 14:26           ` Rob Herring
2019-09-13 18:42             ` Joe Perches
2019-09-13 19:17               ` Mauro Carvalho Chehab
2019-09-13 20:33                 ` Joe Perches [this message]
2019-09-13 12:56         ` Matthew Wilcox
2019-09-13 13:54           ` Mauro Carvalho Chehab
2019-09-13 14:59             ` Guenter Roeck
2019-09-13 22:03     ` Martin K. Petersen
2019-09-12 13:10 ` Bart Van Assche

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