linux-kernel - finding unused header files

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Message-ID: <alpine.DEB.2.02.1206220641150.6493@oneiric>
Date:	Fri, 22 Jun 2012 06:46:39 -0400 (EDT)
From:	"Robert P. J. Day" <rpjday@...shcourse.ca>
To:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
cc:	ysato@...rs.sourceforge.jp
Subject: finding unused header files

  inspired by that last post that located an unused header file under
arch/h8300, i ran my "find_unused_headers.sh" script on the same
sub-directory to see what would show up.

  the script is stupidly conservative and didn't identify that shm.h
header since *somewhere* in the entire kernel source tree, someone was
including a file called "shm.h" -- not even for the same architecture.
like i said, stupidly conservative.

  but it did find this:

$ ../s/find_unused_headers.sh arch/h8300
===== target_time.h =====
./arch/h8300/include/asm/target_time.h
$

and i see nothing anywhere in the entire tree that includes a
target_time.h header under any circumstances.

  i should probably do another run of these scripts some day, just to
see what turns up.

rday

-- 

========================================================================
Robert P. J. Day                                 Ottawa, Ontario, CANADA
                        http://crashcourse.ca

Twitter:                                       http://twitter.com/rpjday
LinkedIn:                               http://ca.linkedin.com/in/rpjday
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