[PATCH v4 8/9] KVM: selftests: Add rule to generate default tests for KVM selftests runner

[Vipin Sharma]

Add 'tests_install' rule in the Makefile.kvm to auto generate default
testcases for KVM selftests runner. Preserve the hierarchy of test
executables for autogenerated files. Remove these testcases on
invocation of 'make clean'.

Autogeneration of default test files allows runner to execute default
testcases easily. These default testcases don't need to be checked in as
they are just executing the test without any command line options.

Signed-off-by: Vipin Sharma <vipinsh at google.com>
---
 tools/testing/selftests/kvm/.gitignore   |  1 +
 tools/testing/selftests/kvm/Makefile.kvm | 26 +++++++++++++++++++++++-
 2 files changed, 26 insertions(+), 1 deletion(-)

diff --git a/tools/testing/selftests/kvm/.gitignore b/tools/testing/selftests/kvm/.gitignore
index 95af97b1ff9e..548d435bde2f 100644
--- a/tools/testing/selftests/kvm/.gitignore
+++ b/tools/testing/selftests/kvm/.gitignore
@@ -7,6 +7,7 @@
 !*.S
 !*.sh
 !*.test
+default.test
 !.gitignore
 !config
 !settings
diff --git a/tools/testing/selftests/kvm/Makefile.kvm b/tools/testing/selftests/kvm/Makefile.kvm
index 6471fa214a9f..fb9439cb5f3d 100644
--- a/tools/testing/selftests/kvm/Makefile.kvm
+++ b/tools/testing/selftests/kvm/Makefile.kvm
@@ -1,7 +1,7 @@
 # SPDX-License-Identifier: GPL-2.0-only
 include ../../../build/Build.include
 
-all:
+all: tests_install
 
 LIBKVM += lib/assert.c
 LIBKVM += lib/elf.c
@@ -330,11 +330,15 @@ $(SPLIT_TEST_GEN_PROGS): $(OUTPUT)/%: $(OUTPUT)/%.o $(OUTPUT)/$(ARCH)/%.o
 $(SPLIT_TEST_GEN_OBJ): $(OUTPUT)/$(ARCH)/%.o: $(ARCH)/%.c
 	$(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c $< -o $@
 
+# Default testcases for KVM selftests runner will be generated in this directory.
+DEFAULT_TESTCASES = testcases_default_gen
+
 EXTRA_CLEAN += $(GEN_HDRS) \
 	       $(LIBKVM_OBJS) \
 	       $(SPLIT_TEST_GEN_OBJ) \
 	       $(TEST_DEP_FILES) \
 	       $(TEST_GEN_OBJ) \
+	       $(OUTPUT)/$(DEFAULT_TESTCASES) \
 	       cscope.*
 
 $(LIBKVM_C_OBJ): $(OUTPUT)/%.o: %.c $(GEN_HDRS)
@@ -363,3 +367,23 @@ cscope:
 	find . -name '*.c' \
 		-exec realpath --relative-base=$(PWD) {} \;) | sort -u > cscope.files
 	cscope -b
+
+# Generate runner testcases in DEFAULT_TESTCASES directory.
+# $(OUTPUT) is either CWD or specified in the make command.
+tests_install: list_progs = $(patsubst $(OUTPUT)/%,%,$(TEST_GEN_PROGS))
+tests_install:
+	$(foreach tc, $(TEST_PROGS), \
+		$(shell mkdir -p $(OUTPUT)/$(DEFAULT_TESTCASES)/$(patsubst %.sh,%,$(tc))))
+	$(foreach tc, $(TEST_PROGS), \
+		$(shell echo $(tc) > $(patsubst %.sh,$(OUTPUT)/$(DEFAULT_TESTCASES)/%/default.test,$(tc))))
+
+	$(foreach tc, $(list_progs), \
+		$(shell mkdir -p $(OUTPUT)/$(DEFAULT_TESTCASES)/$(tc)))
+	$(foreach tc, $(list_progs), \
+		$(shell echo $(tc) > $(patsubst %,$(OUTPUT)/$(DEFAULT_TESTCASES)/%/default.test,$(tc))))
+
+	@if [ ! -d $(OUTPUT)/runner ]; then             \
+		cp -r $(selfdir)/kvm/runner $(OUTPUT);  \
+	fi
+
+	@:
-- 
2.53.0.1118.gaef5881109-goog