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-rw-r--r--tools/testing/selftests/rcutorture/bin/functions.sh20
1 files changed, 20 insertions, 0 deletions
diff --git a/tools/testing/selftests/rcutorture/bin/functions.sh b/tools/testing/selftests/rcutorture/bin/functions.sh
index d01b865bb100..b325470c01b3 100644
--- a/tools/testing/selftests/rcutorture/bin/functions.sh
+++ b/tools/testing/selftests/rcutorture/bin/functions.sh
@@ -64,6 +64,26 @@ configfrag_boot_params () {
fi
}
+# configfrag_boot_cpus bootparam-string config-fragment-file config-cpus
+#
+# Decreases number of CPUs based on any maxcpus= boot parameters specified.
+configfrag_boot_cpus () {
+ local bootargs="`configfrag_boot_params "$1" "$2"`"
+ local maxcpus
+ if echo "${bootargs}" | grep -q 'maxcpus=[0-9]'
+ then
+ maxcpus="`echo "${bootargs}" | sed -e 's/^.*maxcpus=\([0-9]*\).*$/\1/'`"
+ if test "$3" -gt "$maxcpus"
+ then
+ echo $maxcpus
+ else
+ echo $3
+ fi
+ else
+ echo $3
+ fi
+}
+
# configfrag_hotplug_cpu config-fragment-file
#
# Returns 1 if the config fragment specifies hotplug CPU.