diff options
Diffstat (limited to 'tools/testing/selftests/rcutorture/bin/configNR_CPUS.sh')
| -rwxr-xr-x | tools/testing/selftests/rcutorture/bin/configNR_CPUS.sh | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/tools/testing/selftests/rcutorture/bin/configNR_CPUS.sh b/tools/testing/selftests/rcutorture/bin/configNR_CPUS.sh new file mode 100755 index 000000000..2deea2169 --- /dev/null +++ b/tools/testing/selftests/rcutorture/bin/configNR_CPUS.sh @@ -0,0 +1,32 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0+ +# +# Extract the number of CPUs expected from the specified Kconfig-file +# fragment by checking CONFIG_SMP and CONFIG_NR_CPUS. If the specified +# file gives no clue, base the number on the number of idle CPUs on +# the system. +# +# Usage: configNR_CPUS.sh config-frag +# +# Copyright (C) IBM Corporation, 2013 +# +# Authors: Paul E. McKenney <paulmck@linux.ibm.com> + +cf=$1 +if test ! -r $cf +then + echo Unreadable config fragment $cf 1>&2 + exit -1 +fi +if grep -q '^CONFIG_SMP=n$' $cf +then + echo 1 + exit 0 +fi +if grep -q '^CONFIG_NR_CPUS=' $cf +then + grep '^CONFIG_NR_CPUS=' $cf | + sed -e 's/^CONFIG_NR_CPUS=\([0-9]*\).*$/\1/' + exit 0 +fi +cpus2use.sh |