apparently, numerous unused header files under arch/arm
Robert P. J. Day
rpjday at crashcourse.ca
Wed Sep 30 14:21:57 EDT 2009
On Wed, 30 Sep 2009, David Brown wrote:
> On Wed, Sep 30, 2009 at 01:12:22AM -0700, Robert P. J. Day wrote:
>
> > is there any interest in my posting that arm-specific list
> > somewhere and people can peruse it and decide what, if anything,
> > they want to do with it?
>
> Any chance the script itself could be made available? I would find
> this useful as I'm working through large amounts of code to get it
> to a state where it can be sent out as patches.
an embarrassingly brute force approach -- most of my scripts are
just tweaked variations of the following. run from whatever
location you want, and customize to taste:
===== start script =====
#!/bin/sh
# This script should always be run from the *top* of the kernel
# source tree.
#
# Typical usage:
#
# $ find_unused_headers.sh sound
#
# Make sure you run some version of "make clean" before running
# this script.
DIR=${1-*} # optional dir to scan, otherwise "."
# Make a list of all of the header files in the given directory
# structure, and rip off their basenames.
LONGHDRS=$(find ${DIR} -name "*.h")
HDRS=""
for h in ${LONGHDRS} ; do
HDRS="${HDRS} $(basename ${h})"
done
#
# just for fun, process them in sorted order
#
HDRS=$(for h in ${HDRS} ; do echo $h ; done | sort -u)
# echo "${HDRS}"
#
# Test that each header file is included from *somewhere*.
#
for h in ${HDRS} ; do
# echo "Testing $h ..."
egrep -rwq " *# *include.*\b${h}\b" * || {
echo "===== ${h} ====="
find . -name "${h}"
grep -rwH ${h} *
}
done
===== end script =====
that last "grep" is simply to scan the *entire* source tree, looking
for that header file name *anywhere*, and that's what might reveal
that it's being used by something somewhere else, like in a Makefile.
rday
--
========================================================================
Robert P. J. Day Waterloo, Ontario, CANADA
Linux Consulting, Training and Annoying Kernel Pedantry.
Web page: http://crashcourse.ca
Twitter: http://twitter.com/rpjday
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