tools/testing/selftests/rcutorture/bin/configinit.sh

   1 #!/bin/bash
   2 #
   3 # Usage: configinit.sh config-spec-file [ build output dir ]
   4 #
   5 # Create a .config file from the spec file.  Run from the kernel source tree.
   6 # Exits with 0 if all went well, with 1 if all went well but the config
   7 # did not match, and some other number for other failures.
   8 #
   9 # The first argument is the .config specification file, which contains
  10 # desired settings, for example, "CONFIG_NO_HZ=y".  For best results,
  11 # this should be a full pathname.
  12 #
  13 # The second argument is a optional path to a build output directory,
  14 # for example, "O=/tmp/foo".  If this argument is omitted, the .config
  15 # file will be generated directly in the current directory.
  16 #
  17 # This program is free software; you can redistribute it and/or modify
  18 # it under the terms of the GNU General Public License as published by
  19 # the Free Software Foundation; either version 2 of the License, or
  20 # (at your option) any later version.
  21 #
  22 # This program is distributed in the hope that it will be useful,
  23 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  24 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  25 # GNU General Public License for more details.
  26 #
  27 # You should have received a copy of the GNU General Public License
  28 # along with this program; if not, you can access it online at
  29 # http://www.gnu.org/licenses/gpl-2.0.html.
  30 #
  31 # Copyright (C) IBM Corporation, 2013
  32 #
  33 # Authors: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
  34
  35 T=/tmp/configinit.sh.$$
  36 trap 'rm -rf $T' 0
  37 mkdir $T
  38
  39 # Capture config spec file.
  40
  41 c=$1
  42 buildloc=$2
  43 builddir=
  44 if test -n $buildloc
  45 then
  46         if echo $buildloc | grep -q '^O='
  47         then
  48                 builddir=`echo $buildloc | sed -e 's/^O=//'`
  49                 if test ! -d $builddir
  50                 then
  51                         mkdir $builddir
  52                 fi
  53         else
  54                 echo Bad build directory: \"$buildloc\"
  55                 exit 2
  56         fi
  57 fi
  58
  59 sed -e 's/^\(CONFIG[0-9A-Z_]*\)=.*$/grep -v "^# \1" |/' < $c > $T/u.sh
  60 sed -e 's/^\(CONFIG[0-9A-Z_]*=\).*$/grep -v \1 |/' < $c >> $T/u.sh
  61 grep '^grep' < $T/u.sh > $T/upd.sh
  62 echo "cat - $c" >> $T/upd.sh
  63 make mrproper
  64 make $buildloc distclean > $builddir/Make.distclean 2>&1
  65 make $buildloc $TORTURE_DEFCONFIG > $builddir/Make.defconfig.out 2>&1
  66 mv $builddir/.config $builddir/.config.sav
  67 sh $T/upd.sh < $builddir/.config.sav > $builddir/.config
  68 cp $builddir/.config $builddir/.config.new
  69 yes '' | make $buildloc oldconfig > $builddir/Make.oldconfig.out 2> $builddir/Make.oldconfig.err
  70
  71 # verify new config matches specification.
  72 configcheck.sh $builddir/.config $c
  73
  74 exit 0