linux-kernel - Re: dealing with excessive includes

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Message-ID: <45389662.6010604@s5r6.in-berlin.de>
Date:	Fri, 20 Oct 2006 11:26:58 +0200
From:	Stefan Richter <stefanr@...6.in-berlin.de>
To:	Randy Dunlap <rdunlap@...otime.net>
CC:	Al Viro <viro@....linux.org.uk>,
	Linus Torvalds <torvalds@...l.org>,
	Alexey Dobriyan <adobriyan@...il.com>,
	linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org
Subject: Re: dealing with excessive includes

Randy Dunlap wrote:
> Here's about half of checking includers of linux/smp_lock.h to see
> if they actually use any of its interfaces.  (most don't)
> 
> Yet to do:  fs/* and arch/*
> Built only on x86_64.
[...]
>  drivers/acpi/osl.c                            |    1 -
>  drivers/block/acsi_slm.c                      |    1 -
>  drivers/block/umem.c                          |    1 -
>  drivers/char/ds1620.c                         |    1 -
>  drivers/char/dsp56k.c                         |    1 -
>  drivers/char/dtlk.c                           |    1 -
>  drivers/char/ec3104_keyb.c                    |    1 -
>  drivers/char/ftape/zftape/zftape-init.c       |    1 -
>  drivers/char/hangcheck-timer.c                |    1 -
>  drivers/char/ip27-rtc.c                       |    1 -
>  drivers/char/lp.c                             |    1 -
>  drivers/char/mem.c                            |    1 -
>  drivers/char/mxser.c                          |    1 -
>  drivers/char/ppdev.c                          |    1 -
>  drivers/char/sysrq.c                          |    1 -
>  drivers/char/vc_screen.c                      |    1 -
>  drivers/char/watchdog/omap_wdt.c              |    1 -
>  drivers/char/watchdog/pcwd_usb.c              |    1 -
>  drivers/i2c/busses/scx200_acb.c               |    1 -
>  drivers/i2c/i2c-dev.c                         |    1 -
>  drivers/ieee1394/raw1394.c                    |    1 -
>  drivers/infiniband/ulp/iser/iser_verbs.c      |    1 -
>  drivers/input/evdev.c                         |    1 -
>  drivers/input/input.c                         |    1 -
[... etc. pp. ...]
>  sound/oss/swarm_cs4297a.c                     |    1 -
>  sound/oss/trident.c                           |    1 -
>  sound/oss/via82cxxx_audio.c                   |    1 -
>  166 files changed, 166 deletions(-)
[...]

I am afraid in many of these cases a proper cleanup would _replace_ the
include by the correct one, not just delete it. For example,
drivers/ieee1394/raw1394.c should include linux/spinlock.h. AFAICS it
does so at the moment only indirectly via another header.
-- 
Stefan Richter
-=====-=-==- =-=- =-=--
http://arcgraph.de/sr/
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