linux-kernel - Re: [PATCH v2 09/24] dyndbg: add maybe(str,"") macro to reduce code

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Message-ID: <CAJfuBxz1mPVrpZQvS2NM-pD+6h+tvE3gT6H=pMF0KxvrFCqTsw@mail.gmail.com>
Date:   Mon, 15 Jun 2020 14:50:36 -0600
From:   jim.cromie@...il.com
To:     Joe Perches <joe@...ches.com>
Cc:     Jason Baron <jbaron@...mai.com>,
        LKML <linux-kernel@...r.kernel.org>, akpm@...uxfoundation.org,
        Greg KH <gregkh@...uxfoundation.org>,
        Rasmus Villemoes <linux@...musvillemoes.dk>
Subject: Re: [PATCH v2 09/24] dyndbg: add maybe(str,"") macro to reduce code

On Sat, Jun 13, 2020 at 10:14 AM Joe Perches <joe@...ches.com> wrote:
>
> On Sat, 2020-06-13 at 09:57 -0600, Jim Cromie wrote:

> > +#define maybe(str, empty)    ( str ? str : empty )
>
> This macro is unnecessary.
>
> An even shorter very commonly used gcc extension would be
>
>         str ?: empty
>

ooh yes.  I'll do this