[PATCH v2 03/19] selftests: add install target to enable installing selftests

[Shuah Khan <shuahkh@osg.samsung.com>]

Add a new make target to enable installing selftests. This
new target will call install targets for the tests that are
specified in INSTALL_TARGETS. During install, a script is
generated to run tests that are installed. This script will
be installed in the selftest install directory. Individual
test Makefiles are changed to add to the script. This will
allow new tests to add install and run test commands to the
generated kselftest script. run_tests target runs the
generated kselftest script to run tests when it is initiated
from from "make kselftest" from top level source directory.

Approach:

make kselftest_target:
-- exports kselftest INSTALL_KSFT_PATH
   default $(INSTALL_MOD_PATH)/lib/kselftest/$(KERNELRELEASE)
-- exports path for ksefltest.sh
-- runs selftests make install target:

selftests make install target
-- creates kselftest.sh script in install install dir
-- runs install targets for all INSTALL_TARGETS
   (Note: ftrace and powerpc aren't included in INSTALL_TARGETS,
          to not add more content to patch v1 series. This work
          will happen soon. In this series these two targets are
          run after running the generated kselftest script, without
          any regression in the way these tests are run with
          "make kselftest" prior to this work.)
-- install target can be run only from top level source dir.

Individual test make install targets:
-- install test programs and/or scripts in install dir
-- append to the ksefltest.sh file to add commands to run test
-- install target can be run only from top level source dir.

Adds the following new ways to initiate selftests:
-- Installing and running kselftest from install directory
   by running  "make kselftest"
-- Running kselftest script from install directory

Maintains the following ways to run tests:
-- make -C tools/testing/selftests run_tests
-- make -C tools/testing/selftests TARGETS=target run_tests
   Ability specify targets: e.g TARGETS=net
-- make run_tests from tools/testing/selftests
-- make run_tests from individual test directories:
   e.g: make run_tests in tools/testing/selftests/breakpoints

Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
---
 tools/testing/selftests/Makefile | 31 ++++++++++++++++++++++++++++++-
 1 file changed, 30 insertions(+), 1 deletion(-)

diff --git a/tools/testing/selftests/Makefile b/tools/testing/selftests/Makefile
index 45f145c..b9bdc1d 100644
--- a/tools/testing/selftests/Makefile
+++ b/tools/testing/selftests/Makefile
@@ -16,6 +16,10 @@ TARGETS += sysctl
 TARGETS += firmware
 TARGETS += ftrace
 
+INSTALL_TARGETS = breakpoints cpu-hotplug efivarfs firmware ipc
+INSTALL_TARGETS += kcmp memfd memory-hotplug mqueue mount net
+INSTALL_TARGETS += ptrace sysctl timers user vm
+
 TARGETS_HOTPLUG = cpu-hotplug
 TARGETS_HOTPLUG += memory-hotplug
 
@@ -24,10 +28,35 @@ all:
 		make -C $$TARGET; \
 	done;
 
-run_tests: all
+install:
+ifdef INSTALL_KSFT_PATH
+	make all
+	@echo #!/bin/sh\n# Kselftest Run Tests .... >> $(KSELFTEST)
+	@echo # This file is generated during kselftest_install >> $(KSELFTEST)
+	@echo # Please don't change it !!\n  >> $(KSELFTEST)
+	@echo echo ============================== >> $(KSELFTEST)
+	for TARGET in $(INSTALL_TARGETS); do \
+		echo Installing $$TARGET; \
+		make -C $$TARGET install; \
+	done;
+	chmod +x $(KSELFTEST)
+else
+	@echo Run make kselftest_install in top level source directory
+endif
+
+run_tests:
+ifdef INSTALL_KSFT_PATH
+	@cd $(INSTALL_KSFT_PATH); ./kselftest.sh; cd -
+# TODO: include ftrace and powerpc in install targets
+	for TARGET in ftrace powerpc; do \
+		make -C $$TARGET run_tests; \
+	done;
+else
+	make all
 	for TARGET in $(TARGETS); do \
 		make -C $$TARGET run_tests; \
 	done;
+endif
 
 hotplug:
 	for TARGET in $(TARGETS_HOTPLUG); do \
-- 
1.9.1