[PATCH] selftests/livepatch: Check if CONFIG_LIVEPATCH is enabled

[Siddharth Menon <simeddon@gmail.com>]

When CONFIG_LIVEPATCH is disabled, compilation fails due to the
required structs from the livepatch header file being undefined.
This checks for CONFIG_LIVEPATCH in order to verify that
it is enabled before compiling livepatch self-tests.

Reviewed-by: Shuah Khan <skhan@linuxfoundation.org>
Signed-off-by: Siddharth Menon <simeddon@gmail.com>
---
 tools/testing/selftests/livepatch/test_modules/Makefile | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/tools/testing/selftests/livepatch/test_modules/Makefile b/tools/testing/selftests/livepatch/test_modules/Makefile
index e6e638c4bcba..b34b80544709 100644
--- a/tools/testing/selftests/livepatch/test_modules/Makefile
+++ b/tools/testing/selftests/livepatch/test_modules/Makefile
@@ -1,5 +1,6 @@
 TESTMODS_DIR := $(realpath $(dir $(abspath $(lastword $(MAKEFILE_LIST)))))
 KDIR ?= /lib/modules/$(shell uname -r)/build
+CONFIG_LIVEPATCH := $(shell cd $(KDIR) && scripts/config --state CONFIG_LIVEPATCH)
 
 obj-m += test_klp_atomic_replace.o \
 	test_klp_callbacks_busy.o \
@@ -13,10 +14,15 @@ obj-m += test_klp_atomic_replace.o \
 	test_klp_shadow_vars.o \
 	test_klp_syscall.o
 
-# Ensure that KDIR exists, otherwise skip the compilation
+
+# Ensure that KDIR exists and CONFIG_LIVEPATCH is enabled, else skip compilation
 modules:
 ifneq ("$(wildcard $(KDIR))", "")
+ifneq ($(filter y m,$(CONFIG_LIVEPATCH)),)
 	$(Q)$(MAKE) -C $(KDIR) modules KBUILD_EXTMOD=$(TESTMODS_DIR)
+else
+    $(warning CONFIG_LIVEPATCH is not enabled in the kernel config file.)
+endif
 endif
 
 # Ensure that KDIR exists, otherwise skip the clean target
-- 
2.39.5