linux-kernel - Re: [PATCH] Include hrtimer.h for ANSI compliance

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Message-Id: <20091013163414.62ec9244.akpm@linux-foundation.org>
Date:	Tue, 13 Oct 2009 16:34:14 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Thomas DuBuisson <thomas.dubuisson@...il.com>
Cc:	linux-kernel@...r.kernel.org, Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [PATCH] Include hrtimer.h for ANSI compliance

On Tue, 6 Oct 2009 15:20:16 -0700
Thomas DuBuisson <thomas.dubuisson@...il.com> wrote:

> Include <linux/hrtimer.h> to make pci.h ansi compliant (it references
> an hrtimer enum).

extern enum hrtimer_restart it_real_fn(struct hrtimer *);


Perhaps the declaration of it_real_fn() should be moved to hrtimer.h
instead.  Or perhaps not.


Or we could "forward declare" the enum with simply

enum hrtimer_restart;

but given that the compiler works out the storage size of the type at
compile-time, that looks risky.


Or we could not do anything.  Because increasing our inclusion
complexity for no known gain isn't a bargain.


Or is it no known gain?  What prompted you to write this patch?  Some
error message or warning from some tool?  If so, please describe it
fully.

> 
> diff --git a/include/linux/timer.h b/include/linux/timer.h
> index a2d1eb6..ad2b3cb 100644
> --- a/include/linux/timer.h
> +++ b/include/linux/timer.h
> @@ -6,6 +6,7 @@
> #include <linux/stddef.h>
> #include <linux/debugobjects.h>
> #include <linux/stringify.h>
> +#include <linux/hrtimer.h>
> 
> struct tvec_base;

Your email client mangles whitespace, thus destroying the patch.
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