1# SPDX-License-Identifier: GPL-2.0
2# Makefile for mm selftests
3
4LOCAL_HDRS += $(selfdir)/mm/local_config.h $(top_srcdir)/mm/gup_test.h
5
6include local_config.mk
7
8ifeq ($(ARCH),)
9
10ifeq ($(CROSS_COMPILE),)
11uname_M := $(shell uname -m 2>/dev/null || echo not)
12else
13uname_M := $(shell echo $(CROSS_COMPILE) | grep -o '^[a-z0-9]\+')
14endif
15ARCH ?= $(shell echo $(uname_M) | sed -e 's/aarch64.*/arm64/' -e 's/ppc64.*/powerpc/')
16endif
17
18# Without this, failed build products remain, with up-to-date timestamps,
19# thus tricking Make (and you!) into believing that All Is Well, in subsequent
20# make invocations:
21.DELETE_ON_ERROR:
22
23# Avoid accidental wrong builds, due to built-in rules working just a little
24# bit too well--but not quite as well as required for our situation here.
25#
26# In other words, "make $SOME_TEST" is supposed to fail to build at all,
27# because this Makefile only supports either "make" (all), or "make /full/path".
28# However,  the built-in rules, if not suppressed, will pick up CFLAGS and the
29# initial LDLIBS (but not the target-specific LDLIBS, because those are only
30# set for the full path target!). This causes it to get pretty far into building
31# things despite using incorrect values such as an *occasionally* incomplete
32# LDLIBS.
33MAKEFLAGS += --no-builtin-rules
34
35CFLAGS = -Wall -I $(top_srcdir) $(EXTRA_CFLAGS) $(KHDR_INCLUDES)
36LDLIBS = -lrt -lpthread
37
38TEST_GEN_FILES = cow
39TEST_GEN_FILES += compaction_test
40TEST_GEN_FILES += gup_longterm
41TEST_GEN_FILES += gup_test
42TEST_GEN_FILES += hmm-tests
43TEST_GEN_FILES += hugetlb-madvise
44TEST_GEN_FILES += hugetlb-read-hwpoison
45TEST_GEN_FILES += hugepage-mmap
46TEST_GEN_FILES += hugepage-mremap
47TEST_GEN_FILES += hugepage-shm
48TEST_GEN_FILES += hugepage-vmemmap
49TEST_GEN_FILES += khugepaged
50TEST_GEN_FILES += madv_populate
51TEST_GEN_FILES += map_fixed_noreplace
52TEST_GEN_FILES += map_hugetlb
53TEST_GEN_FILES += map_populate
54TEST_GEN_FILES += memfd_secret
55TEST_GEN_FILES += migration
56TEST_GEN_FILES += mkdirty
57TEST_GEN_FILES += mlock-random-test
58TEST_GEN_FILES += mlock2-tests
59TEST_GEN_FILES += mrelease_test
60TEST_GEN_FILES += mremap_dontunmap
61TEST_GEN_FILES += mremap_test
62TEST_GEN_FILES += on-fault-limit
63TEST_GEN_FILES += thuge-gen
64TEST_GEN_FILES += transhuge-stress
65TEST_GEN_FILES += uffd-stress
66TEST_GEN_FILES += uffd-unit-tests
67TEST_GEN_FILES += split_huge_page_test
68TEST_GEN_FILES += ksm_tests
69TEST_GEN_FILES += ksm_functional_tests
70TEST_GEN_FILES += mdwe_test
71
72ifneq ($(ARCH),arm64)
73TEST_GEN_PROGS += soft-dirty
74endif
75
76ifeq ($(ARCH),x86_64)
77CAN_BUILD_I386 := $(shell ./../x86/check_cc.sh "$(CC)" ../x86/trivial_32bit_program.c -m32)
78CAN_BUILD_X86_64 := $(shell ./../x86/check_cc.sh "$(CC)" ../x86/trivial_64bit_program.c)
79CAN_BUILD_WITH_NOPIE := $(shell ./../x86/check_cc.sh "$(CC)" ../x86/trivial_program.c -no-pie)
80
81VMTARGETS := protection_keys
82BINARIES_32 := $(VMTARGETS:%=%_32)
83BINARIES_64 := $(VMTARGETS:%=%_64)
84
85ifeq ($(CAN_BUILD_WITH_NOPIE),1)
86CFLAGS += -no-pie
87endif
88
89ifeq ($(CAN_BUILD_I386),1)
90TEST_GEN_FILES += $(BINARIES_32)
91endif
92
93ifeq ($(CAN_BUILD_X86_64),1)
94TEST_GEN_FILES += $(BINARIES_64)
95endif
96else
97
98ifneq (,$(findstring $(ARCH),powerpc))
99TEST_GEN_FILES += protection_keys
100endif
101
102endif
103
104ifneq (,$(filter $(ARCH),arm64 ia64 mips64 parisc64 powerpc riscv64 s390x sparc64 x86_64))
105TEST_GEN_FILES += va_high_addr_switch
106TEST_GEN_FILES += virtual_address_range
107TEST_GEN_FILES += write_to_hugetlbfs
108endif
109
110TEST_PROGS := run_vmtests.sh
111
112TEST_FILES := test_vmalloc.sh
113TEST_FILES += test_hmm.sh
114TEST_FILES += va_high_addr_switch.sh
115
116include ../lib.mk
117
118$(TEST_GEN_PROGS): vm_util.c
119$(TEST_GEN_FILES): vm_util.c
120
121$(OUTPUT)/uffd-stress: uffd-common.c
122$(OUTPUT)/uffd-unit-tests: uffd-common.c
123
124ifeq ($(ARCH),x86_64)
125BINARIES_32 := $(patsubst %,$(OUTPUT)/%,$(BINARIES_32))
126BINARIES_64 := $(patsubst %,$(OUTPUT)/%,$(BINARIES_64))
127
128define gen-target-rule-32
129$(1) $(1)_32: $(OUTPUT)/$(1)_32
130.PHONY: $(1) $(1)_32
131endef
132
133define gen-target-rule-64
134$(1) $(1)_64: $(OUTPUT)/$(1)_64
135.PHONY: $(1) $(1)_64
136endef
137
138ifeq ($(CAN_BUILD_I386),1)
139$(BINARIES_32): CFLAGS += -m32 -mxsave
140$(BINARIES_32): LDLIBS += -lrt -ldl -lm
141$(BINARIES_32): $(OUTPUT)/%_32: %.c
142	$(CC) $(CFLAGS) $(EXTRA_CFLAGS) $(notdir $^) $(LDLIBS) -o $@
143$(foreach t,$(VMTARGETS),$(eval $(call gen-target-rule-32,$(t))))
144endif
145
146ifeq ($(CAN_BUILD_X86_64),1)
147$(BINARIES_64): CFLAGS += -m64 -mxsave
148$(BINARIES_64): LDLIBS += -lrt -ldl
149$(BINARIES_64): $(OUTPUT)/%_64: %.c
150	$(CC) $(CFLAGS) $(EXTRA_CFLAGS) $(notdir $^) $(LDLIBS) -o $@
151$(foreach t,$(VMTARGETS),$(eval $(call gen-target-rule-64,$(t))))
152endif
153
154# x86_64 users should be encouraged to install 32-bit libraries
155ifeq ($(CAN_BUILD_I386)$(CAN_BUILD_X86_64),01)
156all: warn_32bit_failure
157
158warn_32bit_failure:
159	@echo "Warning: you seem to have a broken 32-bit build" 2>&1;		\
160	echo  "environment. This will reduce test coverage of 64-bit" 2>&1;	\
161	echo  "kernels. If you are using a Debian-like distribution," 2>&1;	\
162	echo  "try:"; 2>&1;							\
163	echo  "";								\
164	echo  "  apt-get install gcc-multilib libc6-i386 libc6-dev-i386";	\
165	echo  "";								\
166	echo  "If you are using a Fedora-like distribution, try:";		\
167	echo  "";								\
168	echo  "  yum install glibc-devel.*i686";				\
169	exit 0;
170endif
171endif
172
173# IOURING_EXTRA_LIBS may get set in local_config.mk, or it may be left empty.
174$(OUTPUT)/cow: LDLIBS += $(IOURING_EXTRA_LIBS)
175
176$(OUTPUT)/gup_longterm: LDLIBS += $(IOURING_EXTRA_LIBS)
177
178$(OUTPUT)/mlock-random-test $(OUTPUT)/memfd_secret: LDLIBS += -lcap
179
180$(OUTPUT)/ksm_tests: LDLIBS += -lnuma
181
182$(OUTPUT)/migration: LDLIBS += -lnuma
183
184local_config.mk local_config.h: check_config.sh
185	/bin/sh ./check_config.sh $(CC)
186
187EXTRA_CLEAN += local_config.mk local_config.h
188
189ifeq ($(IOURING_EXTRA_LIBS),)
190all: warn_missing_liburing
191
192warn_missing_liburing:
193	@echo ; \
194	echo "Warning: missing liburing support. Some tests will be skipped." ; \
195	echo
196endif
197