Makefile 12 KB

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  1. # SPDX-License-Identifier: GPL-2.0
  2. #
  3. # Makefile for some libs needed in the kernel.
  4. #
  5. ccflags-remove-$(CONFIG_FUNCTION_TRACER) += $(CC_FLAGS_FTRACE)
  6. # These files are disabled because they produce lots of non-interesting and/or
  7. # flaky coverage that is not a function of syscall inputs. For example,
  8. # rbtree can be global and individual rotations don't correlate with inputs.
  9. KCOV_INSTRUMENT_string.o := n
  10. KCOV_INSTRUMENT_rbtree.o := n
  11. KCOV_INSTRUMENT_list_debug.o := n
  12. KCOV_INSTRUMENT_debugobjects.o := n
  13. KCOV_INSTRUMENT_dynamic_debug.o := n
  14. KCOV_INSTRUMENT_fault-inject.o := n
  15. # string.o implements standard library functions like memset/memcpy etc.
  16. # Use -ffreestanding to ensure that the compiler does not try to "optimize"
  17. # them into calls to themselves.
  18. CFLAGS_string.o := -ffreestanding
  19. # Early boot use of cmdline, don't instrument it
  20. ifdef CONFIG_AMD_MEM_ENCRYPT
  21. KASAN_SANITIZE_string.o := n
  22. CFLAGS_string.o += -fno-stack-protector
  23. endif
  24. # Used by KCSAN while enabled, avoid recursion.
  25. KCSAN_SANITIZE_random32.o := n
  26. lib-y := ctype.o string.o vsprintf.o cmdline.o \
  27. rbtree.o radix-tree.o timerqueue.o xarray.o \
  28. idr.o extable.o sha1.o irq_regs.o argv_split.o \
  29. flex_proportions.o ratelimit.o show_mem.o \
  30. is_single_threaded.o plist.o decompress.o kobject_uevent.o \
  31. earlycpio.o seq_buf.o siphash.o dec_and_lock.o \
  32. nmi_backtrace.o nodemask.o win_minmax.o memcat_p.o
  33. lib-$(CONFIG_PRINTK) += dump_stack.o
  34. lib-$(CONFIG_SMP) += cpumask.o
  35. lib-y += kobject.o klist.o
  36. obj-y += lockref.o
  37. obj-y += bcd.o sort.o parser.o debug_locks.o random32.o \
  38. bust_spinlocks.o kasprintf.o bitmap.o scatterlist.o \
  39. list_sort.o uuid.o iov_iter.o clz_ctz.o \
  40. bsearch.o find_bit.o llist.o memweight.o kfifo.o \
  41. percpu-refcount.o rhashtable.o \
  42. once.o refcount.o usercopy.o errseq.o bucket_locks.o \
  43. generic-radix-tree.o
  44. obj-$(CONFIG_STRING_SELFTEST) += test_string.o
  45. obj-y += string_helpers.o
  46. obj-$(CONFIG_TEST_STRING_HELPERS) += test-string_helpers.o
  47. obj-y += hexdump.o
  48. obj-$(CONFIG_TEST_HEXDUMP) += test_hexdump.o
  49. obj-y += kstrtox.o
  50. obj-$(CONFIG_FIND_BIT_BENCHMARK) += find_bit_benchmark.o
  51. obj-$(CONFIG_TEST_BPF) += test_bpf.o
  52. obj-$(CONFIG_TEST_FIRMWARE) += test_firmware.o
  53. obj-$(CONFIG_TEST_BITOPS) += test_bitops.o
  54. CFLAGS_test_bitops.o += -Werror
  55. obj-$(CONFIG_TEST_SYSCTL) += test_sysctl.o
  56. obj-$(CONFIG_TEST_HASH) += test_hash.o test_siphash.o
  57. obj-$(CONFIG_TEST_IDA) += test_ida.o
  58. obj-$(CONFIG_KASAN_KUNIT_TEST) += test_kasan.o
  59. CFLAGS_test_kasan.o += -fno-builtin
  60. CFLAGS_test_kasan.o += $(call cc-disable-warning, vla)
  61. obj-$(CONFIG_KASAN_MODULE_TEST) += test_kasan_module.o
  62. CFLAGS_test_kasan_module.o += -fno-builtin
  63. obj-$(CONFIG_TEST_UBSAN) += test_ubsan.o
  64. CFLAGS_test_ubsan.o += $(call cc-disable-warning, vla)
  65. UBSAN_SANITIZE_test_ubsan.o := y
  66. obj-$(CONFIG_TEST_KSTRTOX) += test-kstrtox.o
  67. obj-$(CONFIG_TEST_LIST_SORT) += test_list_sort.o
  68. obj-$(CONFIG_TEST_MIN_HEAP) += test_min_heap.o
  69. obj-$(CONFIG_TEST_LKM) += test_module.o
  70. obj-$(CONFIG_TEST_VMALLOC) += test_vmalloc.o
  71. obj-$(CONFIG_TEST_OVERFLOW) += test_overflow.o
  72. obj-$(CONFIG_TEST_RHASHTABLE) += test_rhashtable.o
  73. obj-$(CONFIG_TEST_SORT) += test_sort.o
  74. obj-$(CONFIG_TEST_USER_COPY) += test_user_copy.o
  75. obj-$(CONFIG_TEST_STATIC_KEYS) += test_static_keys.o
  76. obj-$(CONFIG_TEST_STATIC_KEYS) += test_static_key_base.o
  77. obj-$(CONFIG_TEST_PRINTF) += test_printf.o
  78. obj-$(CONFIG_TEST_BITMAP) += test_bitmap.o
  79. obj-$(CONFIG_TEST_STRSCPY) += test_strscpy.o
  80. obj-$(CONFIG_TEST_UUID) += test_uuid.o
  81. obj-$(CONFIG_TEST_XARRAY) += test_xarray.o
  82. obj-$(CONFIG_TEST_PARMAN) += test_parman.o
  83. obj-$(CONFIG_TEST_KMOD) += test_kmod.o
  84. obj-$(CONFIG_TEST_DEBUG_VIRTUAL) += test_debug_virtual.o
  85. obj-$(CONFIG_TEST_MEMCAT_P) += test_memcat_p.o
  86. obj-$(CONFIG_TEST_OBJAGG) += test_objagg.o
  87. CFLAGS_test_stackinit.o += $(call cc-disable-warning, switch-unreachable)
  88. obj-$(CONFIG_TEST_STACKINIT) += test_stackinit.o
  89. obj-$(CONFIG_TEST_BLACKHOLE_DEV) += test_blackhole_dev.o
  90. obj-$(CONFIG_TEST_MEMINIT) += test_meminit.o
  91. obj-$(CONFIG_TEST_LOCKUP) += test_lockup.o
  92. obj-$(CONFIG_TEST_HMM) += test_hmm.o
  93. obj-$(CONFIG_TEST_FREE_PAGES) += test_free_pages.o
  94. #
  95. # CFLAGS for compiling floating point code inside the kernel. x86/Makefile turns
  96. # off the generation of FPU/SSE* instructions for kernel proper but FPU_FLAGS
  97. # get appended last to CFLAGS and thus override those previous compiler options.
  98. #
  99. FPU_CFLAGS := -msse -msse2
  100. ifdef CONFIG_CC_IS_GCC
  101. # Stack alignment mismatch, proceed with caution.
  102. # GCC < 7.1 cannot compile code using `double` and -mpreferred-stack-boundary=3
  103. # (8B stack alignment).
  104. # See https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53383
  105. #
  106. # The "-msse" in the first argument is there so that the
  107. # -mpreferred-stack-boundary=3 build error:
  108. #
  109. # -mpreferred-stack-boundary=3 is not between 4 and 12
  110. #
  111. # can be triggered. Otherwise gcc doesn't complain.
  112. FPU_CFLAGS += -mhard-float
  113. FPU_CFLAGS += $(call cc-option,-msse -mpreferred-stack-boundary=3,-mpreferred-stack-boundary=4)
  114. endif
  115. obj-$(CONFIG_TEST_FPU) += test_fpu.o
  116. CFLAGS_test_fpu.o += $(FPU_CFLAGS)
  117. obj-$(CONFIG_TEST_LIVEPATCH) += livepatch/
  118. obj-$(CONFIG_KUNIT) += kunit/
  119. ifeq ($(CONFIG_DEBUG_KOBJECT),y)
  120. CFLAGS_kobject.o += -DDEBUG
  121. CFLAGS_kobject_uevent.o += -DDEBUG
  122. endif
  123. obj-$(CONFIG_DEBUG_INFO_REDUCED) += debug_info.o
  124. CFLAGS_debug_info.o += $(call cc-option, -femit-struct-debug-detailed=any)
  125. obj-y += math/ crypto/
  126. obj-$(CONFIG_GENERIC_IOMAP) += iomap.o
  127. obj-$(CONFIG_GENERIC_PCI_IOMAP) += pci_iomap.o
  128. obj-$(CONFIG_HAS_IOMEM) += iomap_copy.o devres.o
  129. obj-$(CONFIG_CHECK_SIGNATURE) += check_signature.o
  130. obj-$(CONFIG_DEBUG_LOCKING_API_SELFTESTS) += locking-selftest.o
  131. lib-y += logic_pio.o
  132. obj-$(CONFIG_GENERIC_HWEIGHT) += hweight.o
  133. obj-$(CONFIG_BTREE) += btree.o
  134. obj-$(CONFIG_INTERVAL_TREE) += interval_tree.o
  135. obj-$(CONFIG_ASSOCIATIVE_ARRAY) += assoc_array.o
  136. obj-$(CONFIG_DEBUG_PREEMPT) += smp_processor_id.o
  137. obj-$(CONFIG_DEBUG_LIST) += list_debug.o
  138. obj-$(CONFIG_DEBUG_OBJECTS) += debugobjects.o
  139. obj-$(CONFIG_BITREVERSE) += bitrev.o
  140. obj-$(CONFIG_LINEAR_RANGES) += linear_ranges.o
  141. obj-$(CONFIG_PACKING) += packing.o
  142. obj-$(CONFIG_CRC_CCITT) += crc-ccitt.o
  143. obj-$(CONFIG_CRC16) += crc16.o
  144. obj-$(CONFIG_CRC_T10DIF)+= crc-t10dif.o
  145. obj-$(CONFIG_CRC_ITU_T) += crc-itu-t.o
  146. obj-$(CONFIG_CRC32) += crc32.o
  147. obj-$(CONFIG_CRC64) += crc64.o
  148. obj-$(CONFIG_CRC32_SELFTEST) += crc32test.o
  149. obj-$(CONFIG_CRC4) += crc4.o
  150. obj-$(CONFIG_CRC7) += crc7.o
  151. obj-$(CONFIG_LIBCRC32C) += libcrc32c.o
  152. obj-$(CONFIG_CRC8) += crc8.o
  153. obj-$(CONFIG_XXHASH) += xxhash.o
  154. obj-$(CONFIG_GENERIC_ALLOCATOR) += genalloc.o
  155. obj-$(CONFIG_842_COMPRESS) += 842/
  156. obj-$(CONFIG_842_DECOMPRESS) += 842/
  157. obj-$(CONFIG_ZLIB_INFLATE) += zlib_inflate/
  158. obj-$(CONFIG_ZLIB_DEFLATE) += zlib_deflate/
  159. obj-$(CONFIG_ZLIB_DFLTCC) += zlib_dfltcc/
  160. obj-$(CONFIG_REED_SOLOMON) += reed_solomon/
  161. obj-$(CONFIG_BCH) += bch.o
  162. obj-$(CONFIG_LZO_COMPRESS) += lzo/
  163. obj-$(CONFIG_LZO_DECOMPRESS) += lzo/
  164. obj-$(CONFIG_LZ4_COMPRESS) += lz4/
  165. obj-$(CONFIG_LZ4HC_COMPRESS) += lz4/
  166. obj-$(CONFIG_LZ4_DECOMPRESS) += lz4/
  167. obj-$(CONFIG_ZSTD_COMPRESS) += zstd/
  168. obj-$(CONFIG_ZSTD_DECOMPRESS) += zstd/
  169. obj-$(CONFIG_XZ_DEC) += xz/
  170. obj-$(CONFIG_RAID6_PQ) += raid6/
  171. lib-$(CONFIG_DECOMPRESS_GZIP) += decompress_inflate.o
  172. lib-$(CONFIG_DECOMPRESS_BZIP2) += decompress_bunzip2.o
  173. lib-$(CONFIG_DECOMPRESS_LZMA) += decompress_unlzma.o
  174. lib-$(CONFIG_DECOMPRESS_XZ) += decompress_unxz.o
  175. lib-$(CONFIG_DECOMPRESS_LZO) += decompress_unlzo.o
  176. lib-$(CONFIG_DECOMPRESS_LZ4) += decompress_unlz4.o
  177. lib-$(CONFIG_DECOMPRESS_ZSTD) += decompress_unzstd.o
  178. obj-$(CONFIG_TEXTSEARCH) += textsearch.o
  179. obj-$(CONFIG_TEXTSEARCH_KMP) += ts_kmp.o
  180. obj-$(CONFIG_TEXTSEARCH_BM) += ts_bm.o
  181. obj-$(CONFIG_TEXTSEARCH_FSM) += ts_fsm.o
  182. obj-$(CONFIG_SMP) += percpu_counter.o
  183. obj-$(CONFIG_AUDIT_GENERIC) += audit.o
  184. obj-$(CONFIG_AUDIT_COMPAT_GENERIC) += compat_audit.o
  185. obj-$(CONFIG_IOMMU_HELPER) += iommu-helper.o
  186. obj-$(CONFIG_FAULT_INJECTION) += fault-inject.o
  187. obj-$(CONFIG_FAULT_INJECTION_USERCOPY) += fault-inject-usercopy.o
  188. obj-$(CONFIG_NOTIFIER_ERROR_INJECTION) += notifier-error-inject.o
  189. obj-$(CONFIG_PM_NOTIFIER_ERROR_INJECT) += pm-notifier-error-inject.o
  190. obj-$(CONFIG_NETDEV_NOTIFIER_ERROR_INJECT) += netdev-notifier-error-inject.o
  191. obj-$(CONFIG_MEMORY_NOTIFIER_ERROR_INJECT) += memory-notifier-error-inject.o
  192. obj-$(CONFIG_OF_RECONFIG_NOTIFIER_ERROR_INJECT) += \
  193. of-reconfig-notifier-error-inject.o
  194. obj-$(CONFIG_FUNCTION_ERROR_INJECTION) += error-inject.o
  195. lib-$(CONFIG_GENERIC_BUG) += bug.o
  196. obj-$(CONFIG_HAVE_ARCH_TRACEHOOK) += syscall.o
  197. obj-$(CONFIG_DYNAMIC_DEBUG_CORE) += dynamic_debug.o
  198. obj-$(CONFIG_SYMBOLIC_ERRNAME) += errname.o
  199. obj-$(CONFIG_NLATTR) += nlattr.o
  200. obj-$(CONFIG_LRU_CACHE) += lru_cache.o
  201. obj-$(CONFIG_GENERIC_CSUM) += checksum.o
  202. obj-$(CONFIG_GENERIC_ATOMIC64) += atomic64.o
  203. obj-$(CONFIG_ATOMIC64_SELFTEST) += atomic64_test.o
  204. obj-$(CONFIG_CPU_RMAP) += cpu_rmap.o
  205. obj-$(CONFIG_DQL) += dynamic_queue_limits.o
  206. obj-$(CONFIG_GLOB) += glob.o
  207. obj-$(CONFIG_GLOB_SELFTEST) += globtest.o
  208. obj-$(CONFIG_MPILIB) += mpi/
  209. obj-$(CONFIG_DIMLIB) += dim/
  210. obj-$(CONFIG_SIGNATURE) += digsig.o
  211. lib-$(CONFIG_CLZ_TAB) += clz_tab.o
  212. obj-$(CONFIG_GENERIC_STRNCPY_FROM_USER) += strncpy_from_user.o
  213. obj-$(CONFIG_GENERIC_STRNLEN_USER) += strnlen_user.o
  214. obj-$(CONFIG_GENERIC_NET_UTILS) += net_utils.o
  215. obj-$(CONFIG_SG_SPLIT) += sg_split.o
  216. obj-$(CONFIG_SG_POOL) += sg_pool.o
  217. obj-$(CONFIG_MEMREGION) += memregion.o
  218. obj-$(CONFIG_STMP_DEVICE) += stmp_device.o
  219. obj-$(CONFIG_IRQ_POLL) += irq_poll.o
  220. # stackdepot.c should not be instrumented or call instrumented functions.
  221. # Prevent the compiler from calling builtins like memcmp() or bcmp() from this
  222. # file.
  223. CFLAGS_stackdepot.o += -fno-builtin
  224. obj-$(CONFIG_STACKDEPOT) += stackdepot.o
  225. KASAN_SANITIZE_stackdepot.o := n
  226. KCOV_INSTRUMENT_stackdepot.o := n
  227. libfdt_files = fdt.o fdt_ro.o fdt_wip.o fdt_rw.o fdt_sw.o fdt_strerror.o \
  228. fdt_empty_tree.o fdt_addresses.o
  229. $(foreach file, $(libfdt_files), \
  230. $(eval CFLAGS_$(file) = -I $(srctree)/scripts/dtc/libfdt))
  231. lib-$(CONFIG_LIBFDT) += $(libfdt_files)
  232. lib-$(CONFIG_BOOT_CONFIG) += bootconfig.o
  233. obj-$(CONFIG_RBTREE_TEST) += rbtree_test.o
  234. obj-$(CONFIG_INTERVAL_TREE_TEST) += interval_tree_test.o
  235. obj-$(CONFIG_PERCPU_TEST) += percpu_test.o
  236. obj-$(CONFIG_ASN1) += asn1_decoder.o
  237. obj-$(CONFIG_FONT_SUPPORT) += fonts/
  238. hostprogs := gen_crc32table
  239. hostprogs += gen_crc64table
  240. clean-files := crc32table.h
  241. clean-files += crc64table.h
  242. $(obj)/crc32.o: $(obj)/crc32table.h
  243. quiet_cmd_crc32 = GEN $@
  244. cmd_crc32 = $< > $@
  245. $(obj)/crc32table.h: $(obj)/gen_crc32table
  246. $(call cmd,crc32)
  247. $(obj)/crc64.o: $(obj)/crc64table.h
  248. quiet_cmd_crc64 = GEN $@
  249. cmd_crc64 = $< > $@
  250. $(obj)/crc64table.h: $(obj)/gen_crc64table
  251. $(call cmd,crc64)
  252. #
  253. # Build a fast OID lookip registry from include/linux/oid_registry.h
  254. #
  255. obj-$(CONFIG_OID_REGISTRY) += oid_registry.o
  256. $(obj)/oid_registry.o: $(obj)/oid_registry_data.c
  257. $(obj)/oid_registry_data.c: $(srctree)/include/linux/oid_registry.h \
  258. $(src)/build_OID_registry
  259. $(call cmd,build_OID_registry)
  260. quiet_cmd_build_OID_registry = GEN $@
  261. cmd_build_OID_registry = perl $(srctree)/$(src)/build_OID_registry $< $@
  262. clean-files += oid_registry_data.c
  263. obj-$(CONFIG_UCS2_STRING) += ucs2_string.o
  264. ifneq ($(CONFIG_UBSAN_TRAP),y)
  265. obj-$(CONFIG_UBSAN) += ubsan.o
  266. endif
  267. UBSAN_SANITIZE_ubsan.o := n
  268. KASAN_SANITIZE_ubsan.o := n
  269. KCSAN_SANITIZE_ubsan.o := n
  270. CFLAGS_ubsan.o := -fno-stack-protector $(DISABLE_STACKLEAK_PLUGIN)
  271. obj-$(CONFIG_SBITMAP) += sbitmap.o
  272. obj-$(CONFIG_PARMAN) += parman.o
  273. # GCC library routines
  274. obj-$(CONFIG_GENERIC_LIB_ASHLDI3) += ashldi3.o
  275. obj-$(CONFIG_GENERIC_LIB_ASHRDI3) += ashrdi3.o
  276. obj-$(CONFIG_GENERIC_LIB_LSHRDI3) += lshrdi3.o
  277. obj-$(CONFIG_GENERIC_LIB_MULDI3) += muldi3.o
  278. obj-$(CONFIG_GENERIC_LIB_CMPDI2) += cmpdi2.o
  279. obj-$(CONFIG_GENERIC_LIB_UCMPDI2) += ucmpdi2.o
  280. obj-$(CONFIG_OBJAGG) += objagg.o
  281. # pldmfw library
  282. obj-$(CONFIG_PLDMFW) += pldmfw/
  283. # KUnit tests
  284. obj-$(CONFIG_BITFIELD_KUNIT) += bitfield_kunit.o
  285. obj-$(CONFIG_LIST_KUNIT_TEST) += list-test.o
  286. obj-$(CONFIG_LINEAR_RANGES_TEST) += test_linear_ranges.o
  287. obj-$(CONFIG_BITS_TEST) += test_bits.o