Re: [PATCH v2] scripts: coccinelle: check for !(un)?likely usage

From: Julia Lawall
Date: Thu Aug 29 2019 - 20:42:46 EST




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