Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1# SPDX-License-Identifier: GPL-2.0
2# Makefile for vm selftests
3
4include local_config.mk
5
6uname_M := $(shell uname -m 2>/dev/null || echo not)
7MACHINE ?= $(shell echo $(uname_M) | sed -e 's/aarch64.*/arm64/' -e 's/ppc64.*/ppc64/')
8
9# Without this, failed build products remain, with up-to-date timestamps,
10# thus tricking Make (and you!) into believing that All Is Well, in subsequent
11# make invocations:
12.DELETE_ON_ERROR:
13
14# Avoid accidental wrong builds, due to built-in rules working just a little
15# bit too well--but not quite as well as required for our situation here.
16#
17# In other words, "make userfaultfd" is supposed to fail to build at all,
18# because this Makefile only supports either "make" (all), or "make /full/path".
19# However, the built-in rules, if not suppressed, will pick up CFLAGS and the
20# initial LDLIBS (but not the target-specific LDLIBS, because those are only
21# set for the full path target!). This causes it to get pretty far into building
22# things despite using incorrect values such as an *occasionally* incomplete
23# LDLIBS.
24MAKEFLAGS += --no-builtin-rules
25
26CFLAGS = -Wall -I ../../../../usr/include $(EXTRA_CFLAGS)
27LDLIBS = -lrt -lpthread
28TEST_GEN_FILES = compaction_test
29TEST_GEN_FILES += gup_test
30TEST_GEN_FILES += hmm-tests
31TEST_GEN_FILES += hugepage-mmap
32TEST_GEN_FILES += hugepage-shm
33TEST_GEN_FILES += khugepaged
34TEST_GEN_FILES += map_fixed_noreplace
35TEST_GEN_FILES += map_hugetlb
36TEST_GEN_FILES += map_populate
37TEST_GEN_FILES += mlock-random-test
38TEST_GEN_FILES += mlock2-tests
39TEST_GEN_FILES += mremap_dontunmap
40TEST_GEN_FILES += mremap_test
41TEST_GEN_FILES += on-fault-limit
42TEST_GEN_FILES += thuge-gen
43TEST_GEN_FILES += transhuge-stress
44TEST_GEN_FILES += userfaultfd
45
46ifeq ($(MACHINE),x86_64)
47CAN_BUILD_I386 := $(shell ./../x86/check_cc.sh $(CC) ../x86/trivial_32bit_program.c -m32)
48CAN_BUILD_X86_64 := $(shell ./../x86/check_cc.sh $(CC) ../x86/trivial_64bit_program.c)
49CAN_BUILD_WITH_NOPIE := $(shell ./../x86/check_cc.sh $(CC) ../x86/trivial_program.c -no-pie)
50
51TARGETS := protection_keys
52BINARIES_32 := $(TARGETS:%=%_32)
53BINARIES_64 := $(TARGETS:%=%_64)
54
55ifeq ($(CAN_BUILD_WITH_NOPIE),1)
56CFLAGS += -no-pie
57endif
58
59ifeq ($(CAN_BUILD_I386),1)
60TEST_GEN_FILES += $(BINARIES_32)
61endif
62
63ifeq ($(CAN_BUILD_X86_64),1)
64TEST_GEN_FILES += $(BINARIES_64)
65endif
66else
67
68ifneq (,$(findstring $(MACHINE),ppc64))
69TEST_GEN_FILES += protection_keys
70endif
71
72endif
73
74ifneq (,$(filter $(MACHINE),arm64 ia64 mips64 parisc64 ppc64 riscv64 s390x sh64 sparc64 x86_64))
75TEST_GEN_FILES += va_128TBswitch
76TEST_GEN_FILES += virtual_address_range
77TEST_GEN_FILES += write_to_hugetlbfs
78endif
79
80TEST_PROGS := run_vmtests.sh
81
82TEST_FILES := test_vmalloc.sh
83
84KSFT_KHDR_INSTALL := 1
85include ../lib.mk
86
87ifeq ($(MACHINE),x86_64)
88BINARIES_32 := $(patsubst %,$(OUTPUT)/%,$(BINARIES_32))
89BINARIES_64 := $(patsubst %,$(OUTPUT)/%,$(BINARIES_64))
90
91define gen-target-rule-32
92$(1) $(1)_32: $(OUTPUT)/$(1)_32
93.PHONY: $(1) $(1)_32
94endef
95
96define gen-target-rule-64
97$(1) $(1)_64: $(OUTPUT)/$(1)_64
98.PHONY: $(1) $(1)_64
99endef
100
101ifeq ($(CAN_BUILD_I386),1)
102$(BINARIES_32): CFLAGS += -m32
103$(BINARIES_32): LDLIBS += -lrt -ldl -lm
104$(BINARIES_32): %_32: %.c
105 $(CC) $(CFLAGS) $(EXTRA_CFLAGS) $(notdir $^) $(LDLIBS) -o $@
106$(foreach t,$(TARGETS),$(eval $(call gen-target-rule-32,$(t))))
107endif
108
109ifeq ($(CAN_BUILD_X86_64),1)
110$(BINARIES_64): CFLAGS += -m64
111$(BINARIES_64): LDLIBS += -lrt -ldl
112$(BINARIES_64): %_64: %.c
113 $(CC) $(CFLAGS) $(EXTRA_CFLAGS) $(notdir $^) $(LDLIBS) -o $@
114$(foreach t,$(TARGETS),$(eval $(call gen-target-rule-64,$(t))))
115endif
116
117# x86_64 users should be encouraged to install 32-bit libraries
118ifeq ($(CAN_BUILD_I386)$(CAN_BUILD_X86_64),01)
119all: warn_32bit_failure
120
121warn_32bit_failure:
122 @echo "Warning: you seem to have a broken 32-bit build" 2>&1; \
123 echo "environment. This will reduce test coverage of 64-bit" 2>&1; \
124 echo "kernels. If you are using a Debian-like distribution," 2>&1; \
125 echo "try:"; 2>&1; \
126 echo ""; \
127 echo " apt-get install gcc-multilib libc6-i386 libc6-dev-i386"; \
128 echo ""; \
129 echo "If you are using a Fedora-like distribution, try:"; \
130 echo ""; \
131 echo " yum install glibc-devel.*i686"; \
132 exit 0;
133endif
134endif
135
136$(OUTPUT)/mlock-random-test: LDLIBS += -lcap
137
138$(OUTPUT)/gup_test: ../../../../mm/gup_test.h
139
140$(OUTPUT)/hmm-tests: local_config.h
141
142# HMM_EXTRA_LIBS may get set in local_config.mk, or it may be left empty.
143$(OUTPUT)/hmm-tests: LDLIBS += $(HMM_EXTRA_LIBS)
144
145local_config.mk local_config.h: check_config.sh
146 /bin/sh ./check_config.sh $(CC)
147
148EXTRA_CLEAN += local_config.mk local_config.h
149
150ifeq ($(HMM_EXTRA_LIBS),)
151all: warn_missing_hugelibs
152
153warn_missing_hugelibs:
154 @echo ; \
155 echo "Warning: missing libhugetlbfs support. Some HMM tests will be skipped." ; \
156 echo
157endif