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

   1 #!/bin/bash
   2 # SPDX-License-Identifier: GPL-2.0+
   3 #
   4 # Extract the number of CPUs expected from the specified Kconfig-file
   5 # fragment by checking CONFIG_SMP and CONFIG_NR_CPUS.  If the specified
   6 # file gives no clue, base the number on the number of idle CPUs on
   7 # the system.
   8 #
   9 # Usage: configNR_CPUS.sh config-frag
  10 #
  11 # Copyright (C) IBM Corporation, 2013
  12 #
  13 # Authors: Paul E. McKenney <paulmck@linux.ibm.com>
  14
  15 cf=$1
  16 if test ! -r $cf
  17 then
  18         echo Unreadable config fragment $cf 1>&2
  19         exit -1
  20 fi
  21 if grep -q '^CONFIG_SMP=n$' $cf
  22 then
  23         echo 1
  24         exit 0
  25 fi
  26 if grep -q '^CONFIG_NR_CPUS=' $cf
  27 then
  28         grep '^CONFIG_NR_CPUS=' $cf |
  29                 sed -e 's/^CONFIG_NR_CPUS=\([0-9]*\).*$/\1/'
  30         exit 0
  31 fi
  32 cpus2use.sh