1 # SPDX-License-Identifier: GPL-2.0 2 # 3 # Makefile for some libs needed in the kernel. 4 # 5 6 ccflags-remove-$(CONFIG_FUNCTION_TRACER) += $(CC_FLAGS_FTRACE) 7 8 # These files are disabled because they produce lots of non-interesting and/or 9 # flaky coverage that is not a function of syscall inputs. For example, 10 # rbtree can be global and individual rotations don't correlate with inputs. 11 KCOV_INSTRUMENT_string.o := n 12 KCOV_INSTRUMENT_rbtree.o := n 13 KCOV_INSTRUMENT_list_debug.o := n 14 KCOV_INSTRUMENT_debugobjects.o := n 15 KCOV_INSTRUMENT_dynamic_debug.o := n 16 KCOV_INSTRUMENT_fault-inject.o := n 17 18 # string.o implements standard library functions like memset/memcpy etc. 19 # Use -ffreestanding to ensure that the compiler does not try to "optimize" 20 # them into calls to themselves. 21 CFLAGS_string.o := -ffreestanding 22 23 # Early boot use of cmdline, don't instrument it 24 ifdef CONFIG_AMD_MEM_ENCRYPT 25 KASAN_SANITIZE_string.o := n 26 27 CFLAGS_string.o += -fno-stack-protector 28 endif 29 30 lib-y := ctype.o string.o vsprintf.o cmdline.o \ 31 rbtree.o radix-tree.o timerqueue.o xarray.o \ 32 idr.o extable.o sha1.o irq_regs.o argv_split.o \ 33 flex_proportions.o ratelimit.o show_mem.o \ 34 is_single_threaded.o plist.o decompress.o kobject_uevent.o \ 35 earlycpio.o seq_buf.o siphash.o dec_and_lock.o \ 36 nmi_backtrace.o nodemask.o win_minmax.o memcat_p.o \ 37 buildid.o 38 39 lib-$(CONFIG_PRINTK) += dump_stack.o 40 lib-$(CONFIG_SMP) += cpumask.o 41 42 lib-y += kobject.o klist.o 43 obj-y += lockref.o 44 45 obj-y += bcd.o sort.o parser.o debug_locks.o random32.o \ 46 bust_spinlocks.o kasprintf.o bitmap.o scatterlist.o \ 47 list_sort.o uuid.o iov_iter.o clz_ctz.o \ 48 bsearch.o find_bit.o llist.o memweight.o kfifo.o \ 49 percpu-refcount.o rhashtable.o \ 50 once.o refcount.o usercopy.o errseq.o bucket_locks.o \ 51 generic-radix-tree.o 52 obj-$(CONFIG_STRING_SELFTEST) += test_string.o 53 obj-y += string_helpers.o 54 obj-$(CONFIG_TEST_STRING_HELPERS) += test-string_helpers.o 55 obj-y += hexdump.o 56 obj-$(CONFIG_TEST_HEXDUMP) += test_hexdump.o 57 obj-y += kstrtox.o 58 obj-$(CONFIG_FIND_BIT_BENCHMARK) += find_bit_benchmark.o 59 obj-$(CONFIG_TEST_BPF) += test_bpf.o 60 obj-$(CONFIG_TEST_FIRMWARE) += test_firmware.o 61 obj-$(CONFIG_TEST_BITOPS) += test_bitops.o 62 CFLAGS_test_bitops.o += -Werror 63 obj-$(CONFIG_TEST_SYSCTL) += test_sysctl.o 64 obj-$(CONFIG_TEST_HASH) += test_hash.o test_siphash.o 65 obj-$(CONFIG_TEST_IDA) += test_ida.o 66 obj-$(CONFIG_KASAN_KUNIT_TEST) += test_kasan.o 67 CFLAGS_test_kasan.o += -fno-builtin 68 CFLAGS_test_kasan.o += $(call cc-disable-warning, vla) 69 obj-$(CONFIG_KASAN_MODULE_TEST) += test_kasan_module.o 70 CFLAGS_test_kasan_module.o += -fno-builtin 71 obj-$(CONFIG_TEST_UBSAN) += test_ubsan.o 72 CFLAGS_test_ubsan.o += $(call cc-disable-warning, vla) 73 UBSAN_SANITIZE_test_ubsan.o := y 74 obj-$(CONFIG_TEST_KSTRTOX) += test-kstrtox.o 75 obj-$(CONFIG_TEST_LIST_SORT) += test_list_sort.o 76 obj-$(CONFIG_TEST_MIN_HEAP) += test_min_heap.o 77 obj-$(CONFIG_TEST_LKM) += test_module.o 78 obj-$(CONFIG_TEST_VMALLOC) += test_vmalloc.o 79 obj-$(CONFIG_TEST_OVERFLOW) += test_overflow.o 80 obj-$(CONFIG_TEST_RHASHTABLE) += test_rhashtable.o 81 obj-$(CONFIG_TEST_SORT) += test_sort.o 82 obj-$(CONFIG_TEST_USER_COPY) += test_user_copy.o 83 obj-$(CONFIG_TEST_STATIC_KEYS) += test_static_keys.o 84 obj-$(CONFIG_TEST_STATIC_KEYS) += test_static_key_base.o 85 obj-$(CONFIG_TEST_PRINTF) += test_printf.o 86 obj-$(CONFIG_TEST_BITMAP) += test_bitmap.o 87 obj-$(CONFIG_TEST_STRSCPY) += test_strscpy.o 88 obj-$(CONFIG_TEST_UUID) += test_uuid.o 89 obj-$(CONFIG_TEST_XARRAY) += test_xarray.o 90 obj-$(CONFIG_TEST_PARMAN) += test_parman.o 91 obj-$(CONFIG_TEST_KMOD) += test_kmod.o 92 obj-$(CONFIG_TEST_DEBUG_VIRTUAL) += test_debug_virtual.o 93 obj-$(CONFIG_TEST_MEMCAT_P) += test_memcat_p.o 94 obj-$(CONFIG_TEST_OBJAGG) += test_objagg.o 95 CFLAGS_test_stackinit.o += $(call cc-disable-warning, switch-unreachable) 96 obj-$(CONFIG_TEST_STACKINIT) += test_stackinit.o 97 obj-$(CONFIG_TEST_BLACKHOLE_DEV) += test_blackhole_dev.o 98 obj-$(CONFIG_TEST_MEMINIT) += test_meminit.o 99 obj-$(CONFIG_TEST_LOCKUP) += test_lockup.o 100 obj-$(CONFIG_TEST_HMM) += test_hmm.o 101 obj-$(CONFIG_TEST_FREE_PAGES) += test_free_pages.o 102 103 # 104 # CFLAGS for compiling floating point code inside the kernel. x86/Makefile turns 105 # off the generation of FPU/SSE* instructions for kernel proper but FPU_FLAGS 106 # get appended last to CFLAGS and thus override those previous compiler options. 107 # 108 FPU_CFLAGS := -msse -msse2 109 ifdef CONFIG_CC_IS_GCC 110 # Stack alignment mismatch, proceed with caution. 111 # GCC < 7.1 cannot compile code using `double` and -mpreferred-stack-boundary=3 112 # (8B stack alignment). 113 # See https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53383 114 # 115 # The "-msse" in the first argument is there so that the 116 # -mpreferred-stack-boundary=3 build error: 117 # 118 # -mpreferred-stack-boundary=3 is not between 4 and 12 119 # 120 # can be triggered. Otherwise gcc doesn't complain. 121 FPU_CFLAGS += -mhard-float 122 FPU_CFLAGS += $(call cc-option,-msse -mpreferred-stack-boundary=3,-mpreferred-stack-boundary=4) 123 endif 124 125 obj-$(CONFIG_TEST_FPU) += test_fpu.o 126 CFLAGS_test_fpu.o += $(FPU_CFLAGS) 127 128 obj-$(CONFIG_TEST_LIVEPATCH) += livepatch/ 129 130 obj-$(CONFIG_KUNIT) += kunit/ 131 132 ifeq ($(CONFIG_DEBUG_KOBJECT),y) 133 CFLAGS_kobject.o += -DDEBUG 134 CFLAGS_kobject_uevent.o += -DDEBUG 135 endif 136 137 obj-$(CONFIG_DEBUG_INFO_REDUCED) += debug_info.o 138 CFLAGS_debug_info.o += $(call cc-option, -femit-struct-debug-detailed=any) 139 140 obj-y += math/ crypto/ 141 142 obj-$(CONFIG_GENERIC_IOMAP) += iomap.o 143 obj-$(CONFIG_GENERIC_PCI_IOMAP) += pci_iomap.o 144 obj-$(CONFIG_HAS_IOMEM) += iomap_copy.o devres.o 145 obj-$(CONFIG_CHECK_SIGNATURE) += check_signature.o 146 obj-$(CONFIG_DEBUG_LOCKING_API_SELFTESTS) += locking-selftest.o 147 148 lib-y += logic_pio.o 149 150 obj-$(CONFIG_GENERIC_HWEIGHT) += hweight.o 151 152 obj-$(CONFIG_BTREE) += btree.o 153 obj-$(CONFIG_INTERVAL_TREE) += interval_tree.o 154 obj-$(CONFIG_ASSOCIATIVE_ARRAY) += assoc_array.o 155 obj-$(CONFIG_DEBUG_PREEMPT) += smp_processor_id.o 156 obj-$(CONFIG_DEBUG_LIST) += list_debug.o 157 obj-$(CONFIG_DEBUG_OBJECTS) += debugobjects.o 158 159 obj-$(CONFIG_BITREVERSE) += bitrev.o 160 obj-$(CONFIG_LINEAR_RANGES) += linear_ranges.o 161 obj-$(CONFIG_PACKING) += packing.o 162 obj-$(CONFIG_CRC_CCITT) += crc-ccitt.o 163 obj-$(CONFIG_CRC16) += crc16.o 164 obj-$(CONFIG_CRC_T10DIF)+= crc-t10dif.o 165 obj-$(CONFIG_CRC_ITU_T) += crc-itu-t.o 166 obj-$(CONFIG_CRC32) += crc32.o 167 obj-$(CONFIG_CRC64) += crc64.o 168 obj-$(CONFIG_CRC32_SELFTEST) += crc32test.o 169 obj-$(CONFIG_CRC4) += crc4.o 170 obj-$(CONFIG_CRC7) += crc7.o 171 obj-$(CONFIG_LIBCRC32C) += libcrc32c.o 172 obj-$(CONFIG_CRC8) += crc8.o 173 obj-$(CONFIG_XXHASH) += xxhash.o 174 obj-$(CONFIG_GENERIC_ALLOCATOR) += genalloc.o 175 176 obj-$(CONFIG_842_COMPRESS) += 842/ 177 obj-$(CONFIG_842_DECOMPRESS) += 842/ 178 obj-$(CONFIG_ZLIB_INFLATE) += zlib_inflate/ 179 obj-$(CONFIG_ZLIB_DEFLATE) += zlib_deflate/ 180 obj-$(CONFIG_ZLIB_DFLTCC) += zlib_dfltcc/ 181 obj-$(CONFIG_REED_SOLOMON) += reed_solomon/ 182 obj-$(CONFIG_BCH) += bch.o 183 obj-$(CONFIG_LZO_COMPRESS) += lzo/ 184 obj-$(CONFIG_LZO_DECOMPRESS) += lzo/ 185 obj-$(CONFIG_LZ4_COMPRESS) += lz4/ 186 obj-$(CONFIG_LZ4HC_COMPRESS) += lz4/ 187 obj-$(CONFIG_LZ4_DECOMPRESS) += lz4/ 188 obj-$(CONFIG_ZSTD_COMPRESS) += zstd/ 189 obj-$(CONFIG_ZSTD_DECOMPRESS) += zstd/ 190 obj-$(CONFIG_XZ_DEC) += xz/ 191 obj-$(CONFIG_RAID6_PQ) += raid6/ 192 193 lib-$(CONFIG_DECOMPRESS_GZIP) += decompress_inflate.o 194 lib-$(CONFIG_DECOMPRESS_BZIP2) += decompress_bunzip2.o 195 lib-$(CONFIG_DECOMPRESS_LZMA) += decompress_unlzma.o 196 lib-$(CONFIG_DECOMPRESS_XZ) += decompress_unxz.o 197 lib-$(CONFIG_DECOMPRESS_LZO) += decompress_unlzo.o 198 lib-$(CONFIG_DECOMPRESS_LZ4) += decompress_unlz4.o 199 lib-$(CONFIG_DECOMPRESS_ZSTD) += decompress_unzstd.o 200 201 obj-$(CONFIG_TEXTSEARCH) += textsearch.o 202 obj-$(CONFIG_TEXTSEARCH_KMP) += ts_kmp.o 203 obj-$(CONFIG_TEXTSEARCH_BM) += ts_bm.o 204 obj-$(CONFIG_TEXTSEARCH_FSM) += ts_fsm.o 205 obj-$(CONFIG_SMP) += percpu_counter.o 206 obj-$(CONFIG_AUDIT_GENERIC) += audit.o 207 obj-$(CONFIG_AUDIT_COMPAT_GENERIC) += compat_audit.o 208 209 obj-$(CONFIG_IOMMU_HELPER) += iommu-helper.o 210 obj-$(CONFIG_FAULT_INJECTION) += fault-inject.o 211 obj-$(CONFIG_FAULT_INJECTION_USERCOPY) += fault-inject-usercopy.o 212 obj-$(CONFIG_NOTIFIER_ERROR_INJECTION) += notifier-error-inject.o 213 obj-$(CONFIG_PM_NOTIFIER_ERROR_INJECT) += pm-notifier-error-inject.o 214 obj-$(CONFIG_NETDEV_NOTIFIER_ERROR_INJECT) += netdev-notifier-error-inject.o 215 obj-$(CONFIG_MEMORY_NOTIFIER_ERROR_INJECT) += memory-notifier-error-inject.o 216 obj-$(CONFIG_OF_RECONFIG_NOTIFIER_ERROR_INJECT) += \ 217 of-reconfig-notifier-error-inject.o 218 obj-$(CONFIG_FUNCTION_ERROR_INJECTION) += error-inject.o 219 220 lib-$(CONFIG_GENERIC_BUG) += bug.o 221 222 obj-$(CONFIG_HAVE_ARCH_TRACEHOOK) += syscall.o 223 224 obj-$(CONFIG_DYNAMIC_DEBUG_CORE) += dynamic_debug.o 225 obj-$(CONFIG_SYMBOLIC_ERRNAME) += errname.o 226 227 obj-$(CONFIG_NLATTR) += nlattr.o 228 229 obj-$(CONFIG_LRU_CACHE) += lru_cache.o 230 231 obj-$(CONFIG_GENERIC_CSUM) += checksum.o 232 233 obj-$(CONFIG_GENERIC_ATOMIC64) += atomic64.o 234 235 obj-$(CONFIG_ATOMIC64_SELFTEST) += atomic64_test.o 236 237 obj-$(CONFIG_CPU_RMAP) += cpu_rmap.o 238 239 obj-$(CONFIG_DQL) += dynamic_queue_limits.o 240 241 obj-$(CONFIG_GLOB) += glob.o 242 obj-$(CONFIG_GLOB_SELFTEST) += globtest.o 243 244 obj-$(CONFIG_MPILIB) += mpi/ 245 obj-$(CONFIG_DIMLIB) += dim/ 246 obj-$(CONFIG_SIGNATURE) += digsig.o 247 248 lib-$(CONFIG_CLZ_TAB) += clz_tab.o 249 250 obj-$(CONFIG_GENERIC_STRNCPY_FROM_USER) += strncpy_from_user.o 251 obj-$(CONFIG_GENERIC_STRNLEN_USER) += strnlen_user.o 252 253 obj-$(CONFIG_GENERIC_NET_UTILS) += net_utils.o 254 255 obj-$(CONFIG_SG_SPLIT) += sg_split.o 256 obj-$(CONFIG_SG_POOL) += sg_pool.o 257 obj-$(CONFIG_MEMREGION) += memregion.o 258 obj-$(CONFIG_STMP_DEVICE) += stmp_device.o 259 obj-$(CONFIG_IRQ_POLL) += irq_poll.o 260 261 # stackdepot.c should not be instrumented or call instrumented functions. 262 # Prevent the compiler from calling builtins like memcmp() or bcmp() from this 263 # file. 264 CFLAGS_stackdepot.o += -fno-builtin 265 obj-$(CONFIG_STACKDEPOT) += stackdepot.o 266 KASAN_SANITIZE_stackdepot.o := n 267 KCOV_INSTRUMENT_stackdepot.o := n 268 269 libfdt_files = fdt.o fdt_ro.o fdt_wip.o fdt_rw.o fdt_sw.o fdt_strerror.o \ 270 fdt_empty_tree.o fdt_addresses.o 271 $(foreach file, $(libfdt_files), \ 272 $(eval CFLAGS_$(file) = -I $(srctree)/scripts/dtc/libfdt)) 273 lib-$(CONFIG_LIBFDT) += $(libfdt_files) 274 275 lib-$(CONFIG_BOOT_CONFIG) += bootconfig.o 276 277 obj-$(CONFIG_RBTREE_TEST) += rbtree_test.o 278 obj-$(CONFIG_INTERVAL_TREE_TEST) += interval_tree_test.o 279 280 obj-$(CONFIG_PERCPU_TEST) += percpu_test.o 281 282 obj-$(CONFIG_ASN1) += asn1_decoder.o 283 284 obj-$(CONFIG_FONT_SUPPORT) += fonts/ 285 286 hostprogs := gen_crc32table 287 hostprogs += gen_crc64table 288 clean-files := crc32table.h 289 clean-files += crc64table.h 290 291 $(obj)/crc32.o: $(obj)/crc32table.h 292 293 quiet_cmd_crc32 = GEN $@ 294 cmd_crc32 = $< > $@ 295 296 $(obj)/crc32table.h: $(obj)/gen_crc32table 297 $(call cmd,crc32) 298 299 $(obj)/crc64.o: $(obj)/crc64table.h 300 301 quiet_cmd_crc64 = GEN $@ 302 cmd_crc64 = $< > $@ 303 304 $(obj)/crc64table.h: $(obj)/gen_crc64table 305 $(call cmd,crc64) 306 307 # 308 # Build a fast OID lookip registry from include/linux/oid_registry.h 309 # 310 obj-$(CONFIG_OID_REGISTRY) += oid_registry.o 311 312 $(obj)/oid_registry.o: $(obj)/oid_registry_data.c 313 314 $(obj)/oid_registry_data.c: $(srctree)/include/linux/oid_registry.h \ 315 $(src)/build_OID_registry 316 $(call cmd,build_OID_registry) 317 318 quiet_cmd_build_OID_registry = GEN $@ 319 cmd_build_OID_registry = perl $(srctree)/$(src)/build_OID_registry $< $@ 320 321 clean-files += oid_registry_data.c 322 323 obj-$(CONFIG_UCS2_STRING) += ucs2_string.o 324 ifneq ($(CONFIG_UBSAN_TRAP),y) 325 obj-$(CONFIG_UBSAN) += ubsan.o 326 endif 327 328 UBSAN_SANITIZE_ubsan.o := n 329 KASAN_SANITIZE_ubsan.o := n 330 KCSAN_SANITIZE_ubsan.o := n 331 CFLAGS_ubsan.o := -fno-stack-protector $(DISABLE_STACKLEAK_PLUGIN) 332 333 obj-$(CONFIG_SBITMAP) += sbitmap.o 334 335 obj-$(CONFIG_PARMAN) += parman.o 336 337 # GCC library routines 338 obj-$(CONFIG_GENERIC_LIB_ASHLDI3) += ashldi3.o 339 obj-$(CONFIG_GENERIC_LIB_ASHRDI3) += ashrdi3.o 340 obj-$(CONFIG_GENERIC_LIB_LSHRDI3) += lshrdi3.o 341 obj-$(CONFIG_GENERIC_LIB_MULDI3) += muldi3.o 342 obj-$(CONFIG_GENERIC_LIB_CMPDI2) += cmpdi2.o 343 obj-$(CONFIG_GENERIC_LIB_UCMPDI2) += ucmpdi2.o 344 obj-$(CONFIG_OBJAGG) += objagg.o 345 346 # pldmfw library 347 obj-$(CONFIG_PLDMFW) += pldmfw/ 348 349 # KUnit tests 350 obj-$(CONFIG_BITFIELD_KUNIT) += bitfield_kunit.o 351 obj-$(CONFIG_LIST_KUNIT_TEST) += list-test.o 352 obj-$(CONFIG_LINEAR_RANGES_TEST) += test_linear_ranges.o 353 obj-$(CONFIG_BITS_TEST) += test_bits.o 354 obj-$(CONFIG_CMDLINE_KUNIT_TEST) += cmdline_kunit.o 355 356 obj-$(CONFIG_GENERIC_LIB_DEVMEM_IS_ALLOWED) += devmem_is_allowed.o 357