linux-kernel - Re: [PATCH] kcmp: add separate Kconfig symbol for kcmp syscall

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Date:   Fri, 10 Jul 2020 12:37:21 +0300
From:   Cyrill Gorcunov <gorcunov@...il.com>
To:     Rasmus Villemoes <linux@...musvillemoes.dk>
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] kcmp: add separate Kconfig symbol for kcmp syscall

On Fri, Jul 10, 2020 at 11:05:11AM +0200, Rasmus Villemoes wrote:
> >> I deliberately drop the ifdef in the eventpoll.h header rather than
> >> replace with KCMP_SYSCALL; it's harmless to declare a function that
> >> isn't defined anywhere.
> > 
> > Could you please point why setting #fidef KCMP_SYSCALL in eventpoll.h
> > is not suitable?
> 
> It's just from a general "avoid ifdef clutter if possible" POV. The
> conditional declaration of the function doesn't really serve any
> purpose.

OK, thanks for explanation.