diff -uNrp tuned-2.9.0.orig/tuned/consts.py tuned-2.9.0/tuned/consts.py
--- tuned-2.9.0.orig/tuned/consts.py	2017-10-29 19:57:37.000000000 +0000
+++ tuned-2.9.0/tuned/consts.py	2018-08-23 13:29:03.336954048 +0000
@@ -21,7 +21,7 @@ ERROR_THRESHOLD = 3
 
 # bootloader plugin configuration
 BOOT_DIR = "/boot"
-GRUB2_CFG_FILES = ["/boot/grub2/grub.cfg", "/boot/efi/EFI/redhat/grub.cfg", "/boot/efi/EFI/fedora/grub.cfg"]
+GRUB2_CFG_FILES = ["/boot/grub2/grub.cfg", "/boot/efi/EFI/redhat/grub.cfg", "/boot/efi/EFI/fedora/grub.cfg", "/boot/efi/EFI/centos/grub.cfg"]
 GRUB2_CFG_DIR = "/etc/grub.d"
 GRUB2_TUNED_TEMPLATE_NAME = "00_tuned"
 GRUB2_TUNED_TEMPLATE_PATH = GRUB2_CFG_DIR + "/" + GRUB2_TUNED_TEMPLATE_NAME