From: Julia Lawall <julia.lawall@lip6.fr>
To: Denis Efremov <efremov@linux.com>
Cc: linux-kernel@vger.kernel.org, cocci@systeme.lip6.fr,
Gilles Muller <Gilles.Muller@lip6.fr>,
Nicolas Palix <nicolas.palix@imag.fr>,
Michal Marek <michal.lkml@markovi.net>,
Markus Elfring <Markus.Elfring@web.de>,
Joe Perches <joe@perches.com>,
Rasmus Villemoes <linux@rasmusvillemoes.dk>
Subject: Re: [PATCH v2] scripts: coccinelle: check for !(un)?likely usage
Date: Fri, 30 Aug 2019 08:42:34 +0800 (CST) [thread overview]
Message-ID: <alpine.DEB.2.21.1908300842060.2184@hadrien> (raw)
In-Reply-To: <d2f8cd31-f317-1b28-fb0a-bfb2cf689181@linux.com>
On Thu, 29 Aug 2019, Denis Efremov wrote:
> On 8/29/19 8:10 PM, Denis Efremov wrote:
> > This patch adds coccinelle script for detecting !likely and
> > !unlikely usage. These notations are confusing. It's better
> > to replace !likely(x) with unlikely(!x) and !unlikely(x) with
> > likely(!x) for readability.
>
> I'm not sure that this rule deserves the acceptance.
> Just to want to be sure that "!unlikely(x)" and "!likely(x)"
> are hard-readable is not only my perception and that they
> become more clear in form "likely(!x)" and "unlikely(!x)" too.
Is likely/unlikely even useful for anything once it is a subexpression?
julia
WARNING: multiple messages have this Message-ID (diff)
From: Julia Lawall <julia.lawall@lip6.fr>
To: Denis Efremov <efremov@linux.com>
Cc: Michal Marek <michal.lkml@markovi.net>,
Rasmus Villemoes <linux@rasmusvillemoes.dk>,
Nicolas Palix <nicolas.palix@imag.fr>,
linux-kernel@vger.kernel.org,
Markus Elfring <Markus.Elfring@web.de>,
Joe Perches <joe@perches.com>,
cocci@systeme.lip6.fr
Subject: Re: [Cocci] [PATCH v2] scripts: coccinelle: check for !(un)?likely usage
Date: Fri, 30 Aug 2019 08:42:34 +0800 (CST) [thread overview]
Message-ID: <alpine.DEB.2.21.1908300842060.2184@hadrien> (raw)
In-Reply-To: <d2f8cd31-f317-1b28-fb0a-bfb2cf689181@linux.com>
On Thu, 29 Aug 2019, Denis Efremov wrote:
> On 8/29/19 8:10 PM, Denis Efremov wrote:
> > This patch adds coccinelle script for detecting !likely and
> > !unlikely usage. These notations are confusing. It's better
> > to replace !likely(x) with unlikely(!x) and !unlikely(x) with
> > likely(!x) for readability.
>
> I'm not sure that this rule deserves the acceptance.
> Just to want to be sure that "!unlikely(x)" and "!likely(x)"
> are hard-readable is not only my perception and that they
> become more clear in form "likely(!x)" and "unlikely(!x)" too.
Is likely/unlikely even useful for anything once it is a subexpression?
julia
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next prev parent reply other threads:[~2019-08-30 0:42 UTC|newest]
Thread overview: 54+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-25 13:05 [PATCH] scripts: coccinelle: check for !(un)?likely usage Denis Efremov
2019-08-25 13:05 ` [Cocci] " Denis Efremov
2019-08-25 15:30 ` Markus Elfring
2019-08-25 15:30 ` [Cocci] " Markus Elfring
2019-08-25 21:06 ` Denis Efremov
2019-08-25 21:06 ` [Cocci] " Denis Efremov
2019-08-25 15:30 ` Markus Elfring
2019-08-25 15:30 ` [Cocci] " Markus Elfring
2019-08-25 16:37 ` Joe Perches
2019-08-25 16:37 ` [Cocci] " Joe Perches
2019-08-25 18:59 ` Denis Efremov
2019-08-25 18:59 ` [Cocci] " Denis Efremov
2019-08-25 19:19 ` Julia Lawall
2019-08-25 19:19 ` [Cocci] " Julia Lawall
2019-08-28 11:33 ` Rasmus Villemoes
2019-08-28 11:33 ` [Cocci] " Rasmus Villemoes
2019-08-28 11:59 ` Joe Perches
2019-08-28 11:59 ` [Cocci] " Joe Perches
2019-08-28 12:33 ` Denis Efremov
2019-08-28 12:33 ` [Cocci] " Denis Efremov
2019-08-28 13:05 ` Rasmus Villemoes
2019-08-28 13:14 ` Denis Efremov
2019-08-28 12:33 ` Julia Lawall
2019-08-28 12:33 ` [Cocci] " Julia Lawall
2019-08-28 12:41 ` Denis Efremov
2019-08-28 12:41 ` [Cocci] " Denis Efremov
2019-08-28 13:57 ` Denis Efremov
2019-08-28 13:57 ` [Cocci] " Denis Efremov
2019-08-25 21:19 ` Denis Efremov
2019-08-25 21:19 ` [Cocci] " Denis Efremov
2019-09-01 17:24 ` Pavel Machek
2019-09-01 17:39 ` Denis Efremov
2019-09-01 17:39 ` [Cocci] " Denis Efremov
2019-08-29 17:10 ` [PATCH v2] " Denis Efremov
2019-08-29 17:10 ` [Cocci] " Denis Efremov
2019-08-29 17:13 ` Denis Efremov
2019-08-29 17:13 ` [Cocci] " Denis Efremov
2019-08-30 0:42 ` Julia Lawall [this message]
2019-08-30 0:42 ` Julia Lawall
2019-08-30 6:56 ` Denis Efremov
2019-08-30 6:56 ` [Cocci] " Denis Efremov
2019-08-30 8:06 ` Rasmus Villemoes
2019-08-30 8:06 ` [Cocci] " Rasmus Villemoes
2019-08-29 20:07 ` Markus Elfring
2019-08-29 20:07 ` [Cocci] " Markus Elfring
2019-08-30 7:55 ` Markus Elfring
2019-08-30 7:55 ` [Cocci] " Markus Elfring
2019-08-30 7:55 ` Markus Elfring
2019-09-06 20:19 ` Julia Lawall
2019-09-06 20:19 ` [Cocci] " Julia Lawall
2019-09-06 20:55 ` Denis Efremov
2019-09-06 20:55 ` [Cocci] " Denis Efremov
2019-09-07 8:05 ` [v2] " Markus Elfring
2019-09-07 8:05 ` [Cocci] " Markus Elfring
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