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1# SPDX-License-Identifier: GPL-2.0
2# Makefile for mm selftests
3
4# IMPORTANT: If you add a new test CATEGORY please add a simple wrapper
5# script so kunit knows to run it, and add it to the list below.
6# If you do not YOUR TESTS WILL NOT RUN IN THE CI.
7
8LOCAL_HDRS += $(selfdir)/mm/local_config.h_gen $(top_srcdir)/mm/gup_test.h
9LOCAL_HDRS += $(selfdir)/mm/mseal_helpers.h
10
11include local_config.mk
12
13ifeq ($(ARCH),)
14
15ifeq ($(CROSS_COMPILE),)
16uname_M := $(shell uname -m 2>/dev/null || echo not)
17else
18uname_M := $(shell echo $(CROSS_COMPILE) | grep -o '^[a-z0-9]\+')
19endif
20ARCH ?= $(shell echo $(uname_M) | sed -e 's/aarch64.*/arm64/' -e 's/ppc64.*/powerpc/')
21endif
22
23# Without this, failed build products remain, with up-to-date timestamps,
24# thus tricking Make (and you!) into believing that All Is Well, in subsequent
25# make invocations:
26.DELETE_ON_ERROR:
27
28# Avoid accidental wrong builds, due to built-in rules working just a little
29# bit too well--but not quite as well as required for our situation here.
30#
31# In other words, "make $SOME_TEST" is supposed to fail to build at all,
32# because this Makefile only supports either "make" (all), or "make /full/path".
33# However, the built-in rules, if not suppressed, will pick up CFLAGS and the
34# initial LDLIBS (but not the target-specific LDLIBS, because those are only
35# set for the full path target!). This causes it to get pretty far into building
36# things despite using incorrect values such as an *occasionally* incomplete
37# LDLIBS.
38MAKEFLAGS += --no-builtin-rules
39
40CFLAGS = -Wall -O2 -I $(top_srcdir) $(EXTRA_CFLAGS) $(KHDR_INCLUDES) $(TOOLS_INCLUDES)
41CFLAGS += -Wunreachable-code
42LDLIBS = -lrt -lpthread -lm
43
44# Some distributions (such as Ubuntu) configure GCC so that _FORTIFY_SOURCE is
45# automatically enabled at -O1 or above. This triggers various unused-result
46# warnings where functions such as read() or write() are called and their
47# return value is not checked. Disable _FORTIFY_SOURCE to silence those
48# warnings.
49CFLAGS += -U_FORTIFY_SOURCE
50
51KDIR ?= $(if $(O),$(O),$(realpath ../../../..))
52ifneq (,$(wildcard $(KDIR)/Module.symvers))
53TEST_GEN_MODS_DIR := page_frag
54else
55PAGE_FRAG_WARNING = "missing Module.symvers, please have the kernel built first"
56endif
57
58TEST_GEN_FILES = cow
59TEST_GEN_FILES += compaction_test
60TEST_GEN_FILES += gup_longterm
61TEST_GEN_FILES += gup_test
62TEST_GEN_FILES += hmm-tests
63TEST_GEN_FILES += hugetlb-madvise
64TEST_GEN_FILES += hugetlb-mmap
65TEST_GEN_FILES += hugetlb-mremap
66TEST_GEN_FILES += hugetlb-read-hwpoison
67TEST_GEN_FILES += hugetlb-shm
68TEST_GEN_FILES += hugetlb-soft-offline
69TEST_GEN_FILES += khugepaged
70TEST_GEN_FILES += madv_populate
71TEST_GEN_FILES += map_fixed_noreplace
72TEST_GEN_FILES += map_populate
73ifneq (,$(filter $(ARCH),arm64 riscv riscv64 x86 x86_64 loongarch32 loongarch64))
74TEST_GEN_FILES += memfd_secret
75endif
76TEST_GEN_FILES += memory-failure
77TEST_GEN_FILES += migration
78TEST_GEN_FILES += mkdirty
79TEST_GEN_FILES += mlock-random-test
80TEST_GEN_FILES += mlock2-tests
81TEST_GEN_FILES += mrelease_test
82TEST_GEN_FILES += mremap_dontunmap
83TEST_GEN_FILES += mremap_test
84TEST_GEN_FILES += mseal_test
85TEST_GEN_FILES += on-fault-limit
86TEST_GEN_FILES += pagemap_ioctl
87TEST_GEN_FILES += pfnmap
88TEST_GEN_FILES += process_madv
89TEST_GEN_FILES += prctl_thp_disable
90TEST_GEN_FILES += thuge-gen
91TEST_GEN_FILES += transhuge-stress
92TEST_GEN_FILES += uffd-stress
93TEST_GEN_FILES += uffd-unit-tests
94TEST_GEN_FILES += uffd-wp-mremap
95TEST_GEN_FILES += split_huge_page_test
96TEST_GEN_FILES += ksm_tests
97TEST_GEN_FILES += ksm_functional_tests
98TEST_GEN_FILES += mdwe_test
99TEST_GEN_FILES += hugetlb_fault_after_madv
100TEST_GEN_FILES += hugetlb_madv_vs_map
101TEST_GEN_FILES += hugetlb_dio
102TEST_GEN_FILES += droppable
103TEST_GEN_FILES += guard-regions
104TEST_GEN_FILES += merge
105TEST_GEN_FILES += rmap
106TEST_GEN_FILES += folio_split_race_test
107
108ifneq ($(ARCH),arm64)
109TEST_GEN_FILES += soft-dirty
110endif
111
112ifeq ($(ARCH),x86_64)
113CAN_BUILD_I386 := $(shell ./../x86/check_cc.sh "$(CC)" ../x86/trivial_32bit_program.c -m32)
114CAN_BUILD_X86_64 := $(shell ./../x86/check_cc.sh "$(CC)" ../x86/trivial_64bit_program.c)
115CAN_BUILD_WITH_NOPIE := $(shell ./../x86/check_cc.sh "$(CC)" ../x86/trivial_program.c -no-pie)
116
117VMTARGETS := protection_keys
118VMTARGETS += pkey_sighandler_tests
119BINARIES_32 := $(VMTARGETS:%=%_32)
120BINARIES_64 := $(VMTARGETS:%=%_64)
121
122ifeq ($(CAN_BUILD_WITH_NOPIE),1)
123CFLAGS += -no-pie
124endif
125
126ifeq ($(CAN_BUILD_I386),1)
127TEST_GEN_FILES += $(BINARIES_32)
128endif
129
130ifeq ($(CAN_BUILD_X86_64),1)
131TEST_GEN_FILES += $(BINARIES_64)
132endif
133
134else ifeq ($(ARCH),arm64)
135TEST_GEN_FILES += protection_keys
136TEST_GEN_FILES += pkey_sighandler_tests
137else ifeq ($(ARCH),powerpc)
138TEST_GEN_FILES += protection_keys
139endif
140
141ifneq (,$(filter $(ARCH),arm64 mips64 parisc64 powerpc riscv64 s390x sparc64 x86_64 s390))
142TEST_GEN_FILES += va_high_addr_switch
143TEST_GEN_FILES += write_to_hugetlbfs
144endif
145
146TEST_PROGS += ksft_compaction.sh
147TEST_PROGS += ksft_cow.sh
148TEST_PROGS += ksft_gup_test.sh
149TEST_PROGS += ksft_hmm.sh
150TEST_PROGS += ksft_hugetlb.sh
151TEST_PROGS += ksft_hugevm.sh
152TEST_PROGS += ksft_kmemleak_confirm.sh
153TEST_PROGS += ksft_kmemleak_dedup.sh
154TEST_PROGS += ksft_ksm.sh
155TEST_PROGS += ksft_ksm_numa.sh
156TEST_PROGS += ksft_madv_guard.sh
157TEST_PROGS += ksft_madv_populate.sh
158TEST_PROGS += ksft_memfd_secret.sh
159TEST_PROGS += ksft_memory_failure.sh
160TEST_PROGS += ksft_migration.sh
161TEST_PROGS += ksft_mkdirty.sh
162TEST_PROGS += ksft_mlock.sh
163TEST_PROGS += ksft_mmap.sh
164TEST_PROGS += ksft_mremap.sh
165TEST_PROGS += ksft_pagemap.sh
166TEST_PROGS += ksft_pfnmap.sh
167TEST_PROGS += ksft_pkey.sh
168TEST_PROGS += ksft_process_madv.sh
169TEST_PROGS += ksft_process_mrelease.sh
170TEST_PROGS += ksft_rmap.sh
171TEST_PROGS += ksft_soft_dirty.sh
172TEST_PROGS += ksft_thp.sh
173TEST_PROGS += ksft_userfaultfd.sh
174TEST_PROGS += ksft_vma_merge.sh
175TEST_PROGS += ksft_vmalloc.sh
176
177TEST_FILES := test_vmalloc.sh
178TEST_FILES += test_hmm.sh
179TEST_FILES += va_high_addr_switch.sh
180TEST_FILES += charge_reserved_hugetlb.sh
181TEST_FILES += hugetlb_reparenting_test.sh
182TEST_FILES += test_page_frag.sh
183TEST_FILES += run_vmtests.sh
184
185# required by charge_reserved_hugetlb.sh
186TEST_FILES += write_hugetlb_memory.sh
187
188include ../lib.mk
189
190$(TEST_GEN_PROGS): vm_util.c hugepage_settings.c
191$(TEST_GEN_FILES): vm_util.c hugepage_settings.c
192
193$(OUTPUT)/uffd-stress: uffd-common.c
194$(OUTPUT)/uffd-unit-tests: uffd-common.c
195$(OUTPUT)/uffd-wp-mremap: uffd-common.c
196$(OUTPUT)/protection_keys: pkey_util.c
197$(OUTPUT)/pkey_sighandler_tests: pkey_util.c
198
199ifeq ($(ARCH),x86_64)
200BINARIES_32 := $(patsubst %,$(OUTPUT)/%,$(BINARIES_32))
201BINARIES_64 := $(patsubst %,$(OUTPUT)/%,$(BINARIES_64))
202
203$(BINARIES_32) $(BINARIES_64): pkey_util.c
204
205define gen-target-rule-32
206$(1) $(1)_32: $(OUTPUT)/$(1)_32
207.PHONY: $(1) $(1)_32
208endef
209
210define gen-target-rule-64
211$(1) $(1)_64: $(OUTPUT)/$(1)_64
212.PHONY: $(1) $(1)_64
213endef
214
215ifeq ($(CAN_BUILD_I386),1)
216$(BINARIES_32): CFLAGS += -m32 -mxsave
217$(BINARIES_32): LDLIBS += -lrt -ldl -lm
218$(BINARIES_32): $(OUTPUT)/%_32: %.c
219 $(call msg,CC,,$@)
220 $(Q)$(CC) $(CFLAGS) $(EXTRA_CFLAGS) $(notdir $^) $(LDLIBS) -o $@
221$(foreach t,$(VMTARGETS),$(eval $(call gen-target-rule-32,$(t))))
222endif
223
224ifeq ($(CAN_BUILD_X86_64),1)
225$(BINARIES_64): CFLAGS += -m64 -mxsave
226$(BINARIES_64): LDLIBS += -lrt -ldl
227$(BINARIES_64): $(OUTPUT)/%_64: %.c
228 $(call msg,CC,,$@)
229 $(Q)$(CC) $(CFLAGS) $(EXTRA_CFLAGS) $(notdir $^) $(LDLIBS) -o $@
230$(foreach t,$(VMTARGETS),$(eval $(call gen-target-rule-64,$(t))))
231endif
232
233# x86_64 users should be encouraged to install 32-bit libraries
234ifeq ($(CAN_BUILD_I386)$(CAN_BUILD_X86_64),01)
235all: warn_32bit_failure
236
237warn_32bit_failure:
238 @echo "Warning: you seem to have a broken 32-bit build" 2>&1; \
239 echo "environment. This will reduce test coverage of 64-bit" 2>&1; \
240 echo "kernels. If you are using a Debian-like distribution," 2>&1; \
241 echo "try:"; 2>&1; \
242 echo ""; \
243 echo " apt-get install gcc-multilib libc6-i386 libc6-dev-i386"; \
244 echo ""; \
245 echo "If you are using a Fedora-like distribution, try:"; \
246 echo ""; \
247 echo " yum install glibc-devel.*i686"; \
248 exit 0;
249endif
250endif
251
252# IOURING_EXTRA_LIBS may get set in local_config.mk, or it may be left empty.
253$(OUTPUT)/cow: LDLIBS += $(IOURING_EXTRA_LIBS)
254
255$(OUTPUT)/gup_longterm: LDLIBS += $(IOURING_EXTRA_LIBS)
256
257$(OUTPUT)/mlock-random-test $(OUTPUT)/memfd_secret: LDLIBS += -lcap
258
259$(OUTPUT)/ksm_tests: LDLIBS += -lnuma
260
261$(OUTPUT)/migration: LDLIBS += -lnuma
262
263$(OUTPUT)/rmap: LDLIBS += -lnuma
264
265local_config.mk local_config.h_gen: check_config.sh
266 $(call msg,CHK,config,$@)
267 $(Q)CC="$(CC)" CFLAGS="$(CFLAGS)" ./check_config.sh
268
269EXTRA_CLEAN += local_config.mk local_config.h_gen
270
271ifeq ($(IOURING_EXTRA_LIBS),)
272all: warn_missing_liburing
273
274warn_missing_liburing:
275 @echo ; \
276 echo "Warning: missing liburing support. Some tests will be skipped." ; \
277 echo
278endif
279
280ifneq ($(PAGE_FRAG_WARNING),)
281all: warn_missing_page_frag
282
283warn_missing_page_frag:
284 @echo ; \
285 echo "Warning: $(PAGE_FRAG_WARNING). page_frag test will be skipped." ; \
286 echo
287endif