diff --git a/utilities/worker-utils/centos/build_srpm.data b/utilities/worker-utils/centos/build_srpm.data
index 274059f4..a356789a 100644
--- a/utilities/worker-utils/centos/build_srpm.data
+++ b/utilities/worker-utils/centos/build_srpm.data
@@ -1,3 +1,3 @@
 SRC_DIR="worker-utils"
 COPY_LIST="$SRC_DIR/LICENSE"
-TIS_PATCH_VER=3
+TIS_PATCH_VER=4
diff --git a/utilities/worker-utils/centos/worker-utils.spec b/utilities/worker-utils/centos/worker-utils.spec
index 73d7d2bf..1607d905 100644
--- a/utilities/worker-utils/centos/worker-utils.spec
+++ b/utilities/worker-utils/centos/worker-utils.spec
@@ -13,6 +13,7 @@ BuildRequires: systemd-devel
 Requires: systemd
 Requires: python
 Requires: /bin/systemctl
+Requires: perl
 
 %description
 Initial worker node resource reservation and misc. utilities
diff --git a/utilities/worker-utils/worker-utils/cpumap_functions.sh b/utilities/worker-utils/worker-utils/cpumap_functions.sh
index 6d8db514..ab961f45 100644
--- a/utilities/worker-utils/worker-utils/cpumap_functions.sh
+++ b/utilities/worker-utils/worker-utils/cpumap_functions.sh
@@ -268,6 +268,17 @@ function get_platform_cpu_list {
     echo ${PLATFORM_CPULIST}
 }
 
+################################################################################
+# Return number of CPUs reserved for platform
+################################################################################
+function get_platform_cpus {
+    local PLATFORM_CPULIST
+    PLATFORM_CPULIST=($(platform_expanded_cpu_list | \
+        perl -pe 's/(\d+)-(\d+)/join(",",$1..$2)/eg'| \
+        sed 's/,/ /g'))
+    echo ${#PLATFORM_CPULIST[@]}
+}
+
 ################################################################################
 # Return list of CPUs reserved for vswitch
 ################################################################################