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 5LOCAL_HDRS += $(selfdir)/mm/mseal_helpers.h 6 7include local_config.mk 8 9ifeq ($(ARCH),) 10 11ifeq ($(CROSS_COMPILE),) 12uname_M := $(shell uname -m 2>/dev/null || echo not) 13else 14uname_M := $(shell echo $(CROSS_COMPILE) | grep -o '^[a-z0-9]\+') 15endif 16ARCH ?= $(shell echo $(uname_M) | sed -e 's/aarch64.*/arm64/' -e 's/ppc64.*/powerpc/') 17endif 18 19# Without this, failed build products remain, with up-to-date timestamps, 20# thus tricking Make (and you!) into believing that All Is Well, in subsequent 21# make invocations: 22.DELETE_ON_ERROR: 23 24# Avoid accidental wrong builds, due to built-in rules working just a little 25# bit too well--but not quite as well as required for our situation here. 26# 27# In other words, "make $SOME_TEST" is supposed to fail to build at all, 28# because this Makefile only supports either "make" (all), or "make /full/path". 29# However, the built-in rules, if not suppressed, will pick up CFLAGS and the 30# initial LDLIBS (but not the target-specific LDLIBS, because those are only 31# set for the full path target!). This causes it to get pretty far into building 32# things despite using incorrect values such as an *occasionally* incomplete 33# LDLIBS. 34MAKEFLAGS += --no-builtin-rules 35 36CFLAGS = -Wall -O2 -I $(top_srcdir) $(EXTRA_CFLAGS) $(KHDR_INCLUDES) $(TOOLS_INCLUDES) 37CFLAGS += -Wunreachable-code 38LDLIBS = -lrt -lpthread -lm 39 40# Some distributions (such as Ubuntu) configure GCC so that _FORTIFY_SOURCE is 41# automatically enabled at -O1 or above. This triggers various unused-result 42# warnings where functions such as read() or write() are called and their 43# return value is not checked. Disable _FORTIFY_SOURCE to silence those 44# warnings. 45CFLAGS += -U_FORTIFY_SOURCE 46 47KDIR ?= /lib/modules/$(shell uname -r)/build 48ifneq (,$(wildcard $(KDIR)/Module.symvers)) 49ifneq (,$(wildcard $(KDIR)/include/linux/page_frag_cache.h)) 50TEST_GEN_MODS_DIR := page_frag 51else 52PAGE_FRAG_WARNING = "missing page_frag_cache.h, please use a newer kernel" 53endif 54else 55PAGE_FRAG_WARNING = "missing Module.symvers, please have the kernel built first" 56endif 57 58TEST_GEN_FILES = cow 59TEST_GEN_FILES += compaction_test 60TEST_GEN_FILES += gup_longterm 61TEST_GEN_FILES += gup_test 62TEST_GEN_FILES += hmm-tests 63TEST_GEN_FILES += hugetlb-madvise 64TEST_GEN_FILES += hugetlb-read-hwpoison 65TEST_GEN_FILES += hugetlb-soft-offline 66TEST_GEN_FILES += hugepage-mmap 67TEST_GEN_FILES += hugepage-mremap 68TEST_GEN_FILES += hugepage-shm 69TEST_GEN_FILES += hugepage-vmemmap 70TEST_GEN_FILES += khugepaged 71TEST_GEN_FILES += madv_populate 72TEST_GEN_FILES += map_fixed_noreplace 73TEST_GEN_FILES += map_hugetlb 74TEST_GEN_FILES += map_populate 75ifneq (,$(filter $(ARCH),arm64 riscv riscv64 x86 x86_64)) 76TEST_GEN_FILES += memfd_secret 77endif 78TEST_GEN_FILES += migration 79TEST_GEN_FILES += mkdirty 80TEST_GEN_FILES += mlock-random-test 81TEST_GEN_FILES += mlock2-tests 82TEST_GEN_FILES += mrelease_test 83TEST_GEN_FILES += mremap_dontunmap 84TEST_GEN_FILES += mremap_test 85TEST_GEN_FILES += mseal_test 86TEST_GEN_FILES += on-fault-limit 87TEST_GEN_FILES += pagemap_ioctl 88TEST_GEN_FILES += pfnmap 89TEST_GEN_FILES += process_madv 90TEST_GEN_FILES += prctl_thp_disable 91TEST_GEN_FILES += thuge-gen 92TEST_GEN_FILES += transhuge-stress 93TEST_GEN_FILES += uffd-stress 94TEST_GEN_FILES += uffd-unit-tests 95TEST_GEN_FILES += uffd-wp-mremap 96TEST_GEN_FILES += split_huge_page_test 97TEST_GEN_FILES += ksm_tests 98TEST_GEN_FILES += ksm_functional_tests 99TEST_GEN_FILES += mdwe_test 100TEST_GEN_FILES += hugetlb_fault_after_madv 101TEST_GEN_FILES += hugetlb_madv_vs_map 102TEST_GEN_FILES += hugetlb_dio 103TEST_GEN_FILES += droppable 104TEST_GEN_FILES += guard-regions 105TEST_GEN_FILES += merge 106TEST_GEN_FILES += rmap 107 108ifneq ($(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 $(ARCH),arm64 mips64 parisc64 powerpc riscv64 s390x sparc64 x86_64 s390)) 142TEST_GEN_FILES += va_high_addr_switch 143ifneq ($(ARCH),riscv64) 144TEST_GEN_FILES += virtual_address_range 145endif 146TEST_GEN_FILES += write_to_hugetlbfs 147endif 148 149TEST_PROGS := run_vmtests.sh 150 151TEST_FILES := test_vmalloc.sh 152TEST_FILES += test_hmm.sh 153TEST_FILES += va_high_addr_switch.sh 154TEST_FILES += charge_reserved_hugetlb.sh 155TEST_FILES += hugetlb_reparenting_test.sh 156TEST_FILES += test_page_frag.sh 157 158# required by charge_reserved_hugetlb.sh 159TEST_FILES += write_hugetlb_memory.sh 160 161include ../lib.mk 162 163$(TEST_GEN_PROGS): vm_util.c thp_settings.c 164$(TEST_GEN_FILES): vm_util.c thp_settings.c 165 166$(OUTPUT)/uffd-stress: uffd-common.c 167$(OUTPUT)/uffd-unit-tests: uffd-common.c 168$(OUTPUT)/uffd-wp-mremap: uffd-common.c 169$(OUTPUT)/protection_keys: pkey_util.c 170$(OUTPUT)/pkey_sighandler_tests: pkey_util.c 171 172ifeq ($(ARCH),x86_64) 173BINARIES_32 := $(patsubst %,$(OUTPUT)/%,$(BINARIES_32)) 174BINARIES_64 := $(patsubst %,$(OUTPUT)/%,$(BINARIES_64)) 175 176$(BINARIES_32) $(BINARIES_64): pkey_util.c 177 178define gen-target-rule-32 179$(1) $(1)_32: $(OUTPUT)/$(1)_32 180.PHONY: $(1) $(1)_32 181endef 182 183define gen-target-rule-64 184$(1) $(1)_64: $(OUTPUT)/$(1)_64 185.PHONY: $(1) $(1)_64 186endef 187 188ifeq ($(CAN_BUILD_I386),1) 189$(BINARIES_32): CFLAGS += -m32 -mxsave 190$(BINARIES_32): LDLIBS += -lrt -ldl -lm 191$(BINARIES_32): $(OUTPUT)/%_32: %.c 192 $(CC) $(CFLAGS) $(EXTRA_CFLAGS) $(notdir $^) $(LDLIBS) -o $@ 193$(foreach t,$(VMTARGETS),$(eval $(call gen-target-rule-32,$(t)))) 194endif 195 196ifeq ($(CAN_BUILD_X86_64),1) 197$(BINARIES_64): CFLAGS += -m64 -mxsave 198$(BINARIES_64): LDLIBS += -lrt -ldl 199$(BINARIES_64): $(OUTPUT)/%_64: %.c 200 $(CC) $(CFLAGS) $(EXTRA_CFLAGS) $(notdir $^) $(LDLIBS) -o $@ 201$(foreach t,$(VMTARGETS),$(eval $(call gen-target-rule-64,$(t)))) 202endif 203 204# x86_64 users should be encouraged to install 32-bit libraries 205ifeq ($(CAN_BUILD_I386)$(CAN_BUILD_X86_64),01) 206all: warn_32bit_failure 207 208warn_32bit_failure: 209 @echo "Warning: you seem to have a broken 32-bit build" 2>&1; \ 210 echo "environment. This will reduce test coverage of 64-bit" 2>&1; \ 211 echo "kernels. If you are using a Debian-like distribution," 2>&1; \ 212 echo "try:"; 2>&1; \ 213 echo ""; \ 214 echo " apt-get install gcc-multilib libc6-i386 libc6-dev-i386"; \ 215 echo ""; \ 216 echo "If you are using a Fedora-like distribution, try:"; \ 217 echo ""; \ 218 echo " yum install glibc-devel.*i686"; \ 219 exit 0; 220endif 221endif 222 223# IOURING_EXTRA_LIBS may get set in local_config.mk, or it may be left empty. 224$(OUTPUT)/cow: LDLIBS += $(IOURING_EXTRA_LIBS) 225 226$(OUTPUT)/gup_longterm: LDLIBS += $(IOURING_EXTRA_LIBS) 227 228$(OUTPUT)/mlock-random-test $(OUTPUT)/memfd_secret: LDLIBS += -lcap 229 230$(OUTPUT)/ksm_tests: LDLIBS += -lnuma 231 232$(OUTPUT)/migration: LDLIBS += -lnuma 233 234$(OUTPUT)/rmap: LDLIBS += -lnuma 235 236local_config.mk local_config.h: check_config.sh 237 /bin/sh ./check_config.sh $(CC) 238 239EXTRA_CLEAN += local_config.mk local_config.h 240 241ifeq ($(IOURING_EXTRA_LIBS),) 242all: warn_missing_liburing 243 244warn_missing_liburing: 245 @echo ; \ 246 echo "Warning: missing liburing support. Some tests will be skipped." ; \ 247 echo 248endif 249 250ifneq ($(PAGE_FRAG_WARNING),) 251all: warn_missing_page_frag 252 253warn_missing_page_frag: 254 @echo ; \ 255 echo "Warning: $(PAGE_FRAG_WARNING). page_frag test will be skipped." ; \ 256 echo 257endif 258