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

   1 #!/bin/bash
   2 #
   3 # Extract the number of CPUs expected from the specified Kconfig-file
   4 # fragment by checking CONFIG_SMP and CONFIG_NR_CPUS.  If the specified
   5 # file gives no clue, base the number on the number of idle CPUs on
   6 # the system.
   7 #
   8 # Usage: configNR_CPUS.sh config-frag
   9 #
  10 # This program is free software; you can redistribute it and/or modify
  11 # it under the terms of the GNU General Public License as published by
  12 # the Free Software Foundation; either version 2 of the License, or
  13 # (at your option) any later version.
  14 #
  15 # This program is distributed in the hope that it will be useful,
  16 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18 # GNU General Public License for more details.
  19 #
  20 # You should have received a copy of the GNU General Public License
  21 # along with this program; if not, you can access it online at
  22 # http://www.gnu.org/licenses/gpl-2.0.html.
  23 #
  24 # Copyright (C) IBM Corporation, 2013
  25 #
  26 # Authors: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
  27
  28 cf=$1
  29 if test ! -r $cf
  30 then
  31         echo Unreadable config fragment $cf 1>&2
  32         exit -1
  33 fi
  34 if grep -q '^CONFIG_SMP=n$' $cf
  35 then
  36         echo 1
  37         exit 0
  38 fi
  39 if grep -q '^CONFIG_NR_CPUS=' $cf
  40 then
  41         grep '^CONFIG_NR_CPUS=' $cf |
  42                 sed -e 's/^CONFIG_NR_CPUS=\([0-9]*\).*$/\1/'
  43         exit 0
  44 fi
  45 cpus2use.sh