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1# SPDX-License-Identifier: GPL-2.0
2TARGETS = android
3TARGETS += bpf
4TARGETS += breakpoints
5TARGETS += capabilities
6TARGETS += cgroup
7TARGETS += cpufreq
8TARGETS += cpu-hotplug
9TARGETS += drivers/dma-buf
10TARGETS += efivarfs
11TARGETS += exec
12TARGETS += filesystems
13TARGETS += filesystems/binderfs
14TARGETS += firmware
15TARGETS += ftrace
16TARGETS += futex
17TARGETS += gpio
18TARGETS += intel_pstate
19TARGETS += ipc
20TARGETS += ir
21TARGETS += kcmp
22TARGETS += kexec
23TARGETS += kvm
24TARGETS += lib
25TARGETS += livepatch
26TARGETS += membarrier
27TARGETS += memfd
28TARGETS += memory-hotplug
29TARGETS += mount
30TARGETS += mqueue
31TARGETS += net
32TARGETS += netfilter
33TARGETS += networking/timestamping
34TARGETS += nsfs
35TARGETS += pidfd
36TARGETS += powerpc
37TARGETS += proc
38TARGETS += pstore
39TARGETS += ptrace
40TARGETS += rseq
41TARGETS += rtc
42TARGETS += seccomp
43TARGETS += sigaltstack
44TARGETS += size
45TARGETS += sparc64
46TARGETS += splice
47TARGETS += static_keys
48TARGETS += sync
49TARGETS += sysctl
50ifneq (1, $(quicktest))
51TARGETS += timers
52endif
53TARGETS += tmpfs
54TARGETS += tpm2
55TARGETS += user
56TARGETS += vm
57TARGETS += x86
58TARGETS += zram
59#Please keep the TARGETS list alphabetically sorted
60# Run "make quicktest=1 run_tests" or
61# "make quicktest=1 kselftest" from top level Makefile
62
63TARGETS_HOTPLUG = cpu-hotplug
64TARGETS_HOTPLUG += memory-hotplug
65
66# User can optionally provide a TARGETS skiplist.
67SKIP_TARGETS ?=
68ifneq ($(SKIP_TARGETS),)
69	TMP := $(filter-out $(SKIP_TARGETS), $(TARGETS))
70	override TARGETS := $(TMP)
71endif
72
73# Clear LDFLAGS and MAKEFLAGS if called from main
74# Makefile to avoid test build failures when test
75# Makefile doesn't have explicit build rules.
76ifeq (1,$(MAKELEVEL))
77override LDFLAGS =
78override MAKEFLAGS =
79endif
80
81# Append kselftest to KBUILD_OUTPUT and O to avoid cluttering
82# KBUILD_OUTPUT with selftest objects and headers installed
83# by selftests Makefile or lib.mk.
84ifdef building_out_of_srctree
85override LDFLAGS =
86endif
87
88top_srcdir ?= ../../..
89
90ifeq ("$(origin O)", "command line")
91  KBUILD_OUTPUT := $(O)
92endif
93
94ifneq ($(KBUILD_OUTPUT),)
95  # Make's built-in functions such as $(abspath ...), $(realpath ...) cannot
96  # expand a shell special character '~'. We use a somewhat tedious way here.
97  abs_objtree := $(shell cd $(top_srcdir) && mkdir -p $(KBUILD_OUTPUT) && cd $(KBUILD_OUTPUT) && pwd)
98  $(if $(abs_objtree),, \
99    $(error failed to create output directory "$(KBUILD_OUTPUT)"))
100  # $(realpath ...) resolves symlinks
101  abs_objtree := $(realpath $(abs_objtree))
102  BUILD := $(abs_objtree)/kselftest
103else
104  BUILD := $(CURDIR)
105  DEFAULT_INSTALL_HDR_PATH := 1
106endif
107
108# Prepare for headers install
109include $(top_srcdir)/scripts/subarch.include
110ARCH           ?= $(SUBARCH)
111export KSFT_KHDR_INSTALL_DONE := 1
112export BUILD
113
114# build and run gpio when output directory is the src dir.
115# gpio has dependency on tools/gpio and builds tools/gpio
116# objects in the src directory in all cases making the src
117# repo dirty even when objects are relocated.
118ifneq (1,$(DEFAULT_INSTALL_HDR_PATH))
119	TMP := $(filter-out gpio, $(TARGETS))
120	TARGETS := $(TMP)
121endif
122
123# set default goal to all, so make without a target runs all, even when
124# all isn't the first target in the file.
125.DEFAULT_GOAL := all
126
127# Install headers here once for all tests. KSFT_KHDR_INSTALL_DONE
128# is used to avoid running headers_install from lib.mk.
129# Invoke headers install with --no-builtin-rules to avoid circular
130# dependency in "make kselftest" case. In this case, second level
131# make inherits builtin-rules which will use the rule generate
132# Makefile.o and runs into
133# "Circular Makefile.o <- prepare dependency dropped."
134# and headers_install fails and test compile fails.
135#
136# O= KBUILD_OUTPUT cases don't run into this error, since main Makefile
137# invokes them as sub-makes and --no-builtin-rules is not necessary,
138# but doesn't cause any failures. Keep it simple and use the same
139# flags in both cases.
140# Local build cases: "make kselftest", "make -C" - headers are installed
141# in the default INSTALL_HDR_PATH usr/include.
142khdr:
143ifeq (1,$(DEFAULT_INSTALL_HDR_PATH))
144	$(MAKE) --no-builtin-rules ARCH=$(ARCH) -C $(top_srcdir) headers_install
145else
146	$(MAKE) --no-builtin-rules INSTALL_HDR_PATH=$$BUILD/usr \
147		ARCH=$(ARCH) -C $(top_srcdir) headers_install
148endif
149
150all: khdr
151	@for TARGET in $(TARGETS); do		\
152		BUILD_TARGET=$$BUILD/$$TARGET;	\
153		mkdir $$BUILD_TARGET  -p;	\
154		$(MAKE) OUTPUT=$$BUILD_TARGET -C $$TARGET;\
155	done;
156
157run_tests: all
158	@for TARGET in $(TARGETS); do \
159		BUILD_TARGET=$$BUILD/$$TARGET;	\
160		$(MAKE) OUTPUT=$$BUILD_TARGET -C $$TARGET run_tests;\
161	done;
162
163hotplug:
164	@for TARGET in $(TARGETS_HOTPLUG); do \
165		BUILD_TARGET=$$BUILD/$$TARGET;	\
166		$(MAKE) OUTPUT=$$BUILD_TARGET -C $$TARGET;\
167	done;
168
169run_hotplug: hotplug
170	@for TARGET in $(TARGETS_HOTPLUG); do \
171		BUILD_TARGET=$$BUILD/$$TARGET;	\
172		$(MAKE) OUTPUT=$$BUILD_TARGET -C $$TARGET run_full_test;\
173	done;
174
175clean_hotplug:
176	@for TARGET in $(TARGETS_HOTPLUG); do \
177		BUILD_TARGET=$$BUILD/$$TARGET;	\
178		$(MAKE) OUTPUT=$$BUILD_TARGET -C $$TARGET clean;\
179	done;
180
181run_pstore_crash:
182	$(MAKE) -C pstore run_crash
183
184# Use $BUILD as the default install root. $BUILD points to the
185# right output location for the following cases:
186# 1. output_dir=kernel_src
187# 2. a separate output directory is specified using O= KBUILD_OUTPUT
188# 3. a separate output directory is specified using KBUILD_OUTPUT
189# Avoid conflict with INSTALL_PATH set by the main Makefile
190#
191KSFT_INSTALL_PATH ?= $(BUILD)/kselftest_install
192KSFT_INSTALL_PATH := $(abspath $(KSFT_INSTALL_PATH))
193# Avoid changing the rest of the logic here and lib.mk.
194INSTALL_PATH := $(KSFT_INSTALL_PATH)
195ALL_SCRIPT := $(INSTALL_PATH)/run_kselftest.sh
196
197install: all
198ifdef INSTALL_PATH
199	@# Ask all targets to install their files
200	mkdir -p $(INSTALL_PATH)/kselftest
201	install -m 744 kselftest/runner.sh $(INSTALL_PATH)/kselftest/
202	install -m 744 kselftest/prefix.pl $(INSTALL_PATH)/kselftest/
203	@for TARGET in $(TARGETS); do \
204		BUILD_TARGET=$$BUILD/$$TARGET;	\
205		$(MAKE) OUTPUT=$$BUILD_TARGET -C $$TARGET INSTALL_PATH=$(INSTALL_PATH)/$$TARGET install; \
206	done;
207
208	@# Ask all targets to emit their test scripts
209	echo "#!/bin/sh" > $(ALL_SCRIPT)
210	echo "BASE_DIR=\$$(realpath \$$(dirname \$$0))" >> $(ALL_SCRIPT)
211	echo "cd \$$BASE_DIR" >> $(ALL_SCRIPT)
212	echo ". ./kselftest/runner.sh" >> $(ALL_SCRIPT)
213	echo "ROOT=\$$PWD" >> $(ALL_SCRIPT)
214	echo "if [ \"\$$1\" = \"--summary\" ]; then" >> $(ALL_SCRIPT)
215	echo "  logfile=\$$BASE_DIR/output.log" >> $(ALL_SCRIPT)
216	echo "  cat /dev/null > \$$logfile" >> $(ALL_SCRIPT)
217	echo "fi" >> $(ALL_SCRIPT)
218
219	@# While building run_kselftest.sh skip also non-existent TARGET dirs:
220	@# they could be the result of a build failure and should NOT be
221	@# included in the generated runlist.
222	for TARGET in $(TARGETS); do \
223		BUILD_TARGET=$$BUILD/$$TARGET;	\
224		[ ! -d $(INSTALL_PATH)/$$TARGET ] && echo "Skipping non-existent dir: $$TARGET" && continue; \
225		echo "[ -w /dev/kmsg ] && echo \"kselftest: Running tests in $$TARGET\" >> /dev/kmsg" >> $(ALL_SCRIPT); \
226		echo "cd $$TARGET" >> $(ALL_SCRIPT); \
227		echo -n "run_many" >> $(ALL_SCRIPT); \
228		echo -n "Emit Tests for $$TARGET\n"; \
229		$(MAKE) -s --no-print-directory OUTPUT=$$BUILD_TARGET -C $$TARGET emit_tests >> $(ALL_SCRIPT); \
230		echo "" >> $(ALL_SCRIPT);	    \
231		echo "cd \$$ROOT" >> $(ALL_SCRIPT); \
232	done;
233
234	chmod u+x $(ALL_SCRIPT)
235else
236	$(error Error: set INSTALL_PATH to use install)
237endif
238
239clean:
240	@for TARGET in $(TARGETS); do \
241		BUILD_TARGET=$$BUILD/$$TARGET;	\
242		$(MAKE) OUTPUT=$$BUILD_TARGET -C $$TARGET clean;\
243	done;
244
245.PHONY: khdr all run_tests hotplug run_hotplug clean_hotplug run_pstore_crash install clean
246