linux-kernel - Re: [PATCH] checkpatch: add *_NOTIFIER

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Date:   Tue, 02 Jul 2019 06:11:45 -0700
From:   Joe Perches <joe@...ches.com>
To:     Gilad Ben-Yossef <gilad@...yossef.com>,
        Andy Whitcroft <apw@...onical.com>
Cc:     Ofir Drang <ofir.drang@....com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] checkpatch: add *_NOTIFIER_HEAD as var definition

On Tue, 2019-07-02 at 15:30 +0300, Gilad Ben-Yossef wrote:
> Add *_NOTIFIER_HEAD as variable definition to avoid code like this:
> 
> ATOMIC_NOTIFIER_HEAD(foo);
> EXPORT_SYMBOL_GPL(foo);
> 
> From triggering the the following warning:
> WARNING: EXPORT_SYMBOL(foo); should immediately follow its function/variable
[]
> diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
[]
> @@ -3864,6 +3864,7 @@ sub process {
>  				^.DEFINE_$Ident\(\Q$name\E\)|
>  				^.DECLARE_$Ident\(\Q$name\E\)|
>  				^.LIST_HEAD\(\Q$name\E\)|
> +				^.$Ident._NOTIFIER_HEAD\(\Q$name\E\)|

I think you want "${Ident}_NOTIFIER_HEAD\(\Q$name\E\)

>  				^.(?:$Storage\s+)?$Type\s*\(\s*\*\s*\Q$name\E\s*\)\s*\(|
>  				\b\Q$name\E(?:\s+$Attribute)*\s*(?:;|=|\[|\()
>  			    )/x) {