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1# SPDX-License-Identifier: GPL-2.0
2#
3# Makefile for some libs needed in the kernel.
4#
5
6ccflags-remove-$(CONFIG_FUNCTION_TRACER) += $(CC_FLAGS_FTRACE)
7
8# Branch profiling isn't noinstr-safe
9ifdef CONFIG_TRACE_BRANCH_PROFILING
10CFLAGS_smp_processor_id.o += -DDISABLE_BRANCH_PROFILING
11endif
12
13# These files are disabled because they produce lots of non-interesting and/or
14# flaky coverage that is not a function of syscall inputs. For example,
15# rbtree can be global and individual rotations don't correlate with inputs.
16KCOV_INSTRUMENT_string.o := n
17KCOV_INSTRUMENT_rbtree.o := n
18KCOV_INSTRUMENT_list_debug.o := n
19KCOV_INSTRUMENT_debugobjects.o := n
20KCOV_INSTRUMENT_dynamic_debug.o := n
21KCOV_INSTRUMENT_fault-inject.o := n
22KCOV_INSTRUMENT_find_bit.o := n
23
24# string.o implements standard library functions like memset/memcpy etc.
25# Use -ffreestanding to ensure that the compiler does not try to "optimize"
26# them into calls to themselves.
27CFLAGS_string.o := -ffreestanding
28
29# Early boot use of cmdline, don't instrument it
30ifdef CONFIG_AMD_MEM_ENCRYPT
31KASAN_SANITIZE_string.o := n
32
33CFLAGS_string.o += -fno-stack-protector
34endif
35
36lib-y := ctype.o string.o vsprintf.o cmdline.o \
37 rbtree.o radix-tree.o timerqueue.o xarray.o \
38 maple_tree.o idr.o extable.o irq_regs.o argv_split.o \
39 flex_proportions.o ratelimit.o \
40 is_single_threaded.o plist.o decompress.o kobject_uevent.o \
41 earlycpio.o seq_buf.o dec_and_lock.o \
42 nmi_backtrace.o win_minmax.o memcat_p.o \
43 buildid.o objpool.o iomem_copy.o sys_info.o
44
45lib-$(CONFIG_UNION_FIND) += union_find.o
46lib-$(CONFIG_PRINTK) += dump_stack.o
47lib-$(CONFIG_SMP) += cpumask.o
48lib-$(CONFIG_MIN_HEAP) += min_heap.o
49
50lib-y += kobject.o klist.o
51obj-y += lockref.o
52
53CONTEXT_ANALYSIS_rhashtable.o := y
54
55obj-y += bcd.o sort.o parser.o debug_locks.o random32.o \
56 bust_spinlocks.o kasprintf.o bitmap.o scatterlist.o \
57 list_sort.o uuid.o iov_iter.o clz_ctz.o \
58 bsearch.o find_bit.o llist.o lwq.o memweight.o kfifo.o \
59 percpu-refcount.o rhashtable.o base64.o \
60 once.o refcount.o rcuref.o usercopy.o errseq.o bucket_locks.o \
61 generic-radix-tree.o bitmap-str.o
62obj-y += string_helpers.o
63obj-y += hexdump.o
64obj-$(CONFIG_TEST_HEXDUMP) += test_hexdump.o
65obj-y += kstrtox.o
66obj-$(CONFIG_FIND_BIT_BENCHMARK) += find_bit_benchmark.o
67obj-$(CONFIG_REGION_ALLOC_BENCHMARK) += region_alloc_benchmark.o
68obj-$(CONFIG_FIND_BIT_BENCHMARK_RUST) += find_bit_benchmark_rust.o
69obj-$(CONFIG_TEST_BPF) += test_bpf.o
70test_dhry-objs := dhry_1.o dhry_2.o dhry_run.o
71obj-$(CONFIG_TEST_DHRY) += test_dhry.o
72obj-$(CONFIG_TEST_FIRMWARE) += test_firmware.o
73obj-$(CONFIG_TEST_BITOPS) += test_bitops.o
74CFLAGS_test_bitops.o += -Werror
75obj-$(CONFIG_TEST_SYSCTL) += test_sysctl.o
76obj-$(CONFIG_TEST_IDA) += test_ida.o
77obj-$(CONFIG_TEST_UBSAN) += test_ubsan.o
78CFLAGS_test_ubsan.o += $(call cc-disable-warning, unused-but-set-variable)
79UBSAN_SANITIZE_test_ubsan.o := y
80obj-$(CONFIG_TEST_KSTRTOX) += test-kstrtox.o
81obj-$(CONFIG_TEST_LKM) += test_module.o
82obj-$(CONFIG_TEST_VMALLOC) += test_vmalloc.o
83obj-$(CONFIG_TEST_WORKQUEUE) += test_workqueue.o
84obj-$(CONFIG_TEST_RHASHTABLE) += test_rhashtable.o
85obj-$(CONFIG_TEST_STATIC_KEYS) += test_static_keys.o
86obj-$(CONFIG_TEST_STATIC_KEYS) += test_static_key_base.o
87obj-$(CONFIG_TEST_DYNAMIC_DEBUG) += test_dynamic_debug.o
88
89obj-$(CONFIG_TEST_BITMAP) += test_bitmap.o
90ifeq ($(CONFIG_CC_IS_CLANG)$(CONFIG_KASAN),yy)
91# FIXME: Clang breaks test_bitmap_const_eval when KASAN and GCOV are enabled
92GCOV_PROFILE_test_bitmap.o := n
93endif
94
95obj-$(CONFIG_TEST_XARRAY) += test_xarray.o
96obj-$(CONFIG_TEST_MAPLE_TREE) += test_maple_tree.o
97obj-$(CONFIG_TEST_PARMAN) += test_parman.o
98obj-$(CONFIG_TEST_KMOD) += test_kmod.o
99obj-$(CONFIG_TEST_DEBUG_VIRTUAL) += test_debug_virtual.o
100obj-$(CONFIG_TEST_MEMCAT_P) += test_memcat_p.o
101obj-$(CONFIG_TEST_OBJAGG) += test_objagg.o
102obj-$(CONFIG_TEST_MEMINIT) += test_meminit.o
103obj-$(CONFIG_TEST_LOCKUP) += test_lockup.o
104obj-$(CONFIG_TEST_HMM) += test_hmm.o
105obj-$(CONFIG_TEST_FREE_PAGES) += test_free_pages.o
106obj-$(CONFIG_TEST_REF_TRACKER) += test_ref_tracker.o
107obj-$(CONFIG_TEST_OBJPOOL) += test_objpool.o
108obj-$(CONFIG_TEST_KEXEC_HANDOVER) += test_kho.o
109
110obj-$(CONFIG_TEST_FPU) += test_fpu.o
111test_fpu-y := test_fpu_glue.o test_fpu_impl.o
112CFLAGS_test_fpu_impl.o += $(CC_FLAGS_FPU)
113CFLAGS_REMOVE_test_fpu_impl.o += $(CC_FLAGS_NO_FPU)
114
115obj-y += kunit/
116
117ifeq ($(CONFIG_DEBUG_KOBJECT),y)
118CFLAGS_kobject.o += -DDEBUG
119CFLAGS_kobject_uevent.o += -DDEBUG
120endif
121
122obj-$(CONFIG_DEBUG_INFO_REDUCED) += debug_info.o
123CFLAGS_debug_info.o += $(call cc-option, -femit-struct-debug-detailed=any)
124
125obj-y += math/ crc/ crypto/ tests/ vdso/ raid/
126
127obj-$(CONFIG_GENERIC_IOMAP) += iomap.o
128obj-$(CONFIG_HAS_IOMEM) += iomap_copy.o devres.o
129obj-$(CONFIG_CHECK_SIGNATURE) += check_signature.o
130obj-$(CONFIG_DEBUG_LOCKING_API_SELFTESTS) += locking-selftest.o
131
132obj-$(CONFIG_GENERIC_CPU_CACHE_MAINTENANCE) += cache_maint.o
133
134lib-y += logic_pio.o
135
136lib-$(CONFIG_INDIRECT_IOMEM) += logic_iomem.o
137
138obj-$(CONFIG_TRACE_MMIO_ACCESS) += trace_readwrite.o
139
140obj-$(CONFIG_GENERIC_HWEIGHT) += hweight.o
141
142obj-$(CONFIG_BTREE) += btree.o
143obj-$(CONFIG_INTERVAL_TREE) += interval_tree.o
144obj-$(CONFIG_ASSOCIATIVE_ARRAY) += assoc_array.o
145obj-$(CONFIG_DEBUG_PREEMPT) += smp_processor_id.o
146obj-$(CONFIG_LIST_HARDENED) += list_debug.o
147obj-$(CONFIG_DEBUG_OBJECTS) += debugobjects.o
148
149obj-$(CONFIG_GENERIC_BITREVERSE) += bitrev.o
150obj-$(CONFIG_LINEAR_RANGES) += linear_ranges.o
151obj-$(CONFIG_PACKING) += packing.o
152obj-$(CONFIG_PACKING_KUNIT_TEST) += packing_test.o
153obj-$(CONFIG_XXHASH) += xxhash.o
154obj-$(CONFIG_GENERIC_ALLOCATOR) += genalloc.o
155
156obj-$(CONFIG_842_COMPRESS) += 842/
157obj-$(CONFIG_842_DECOMPRESS) += 842/
158obj-$(CONFIG_ZLIB_INFLATE) += zlib_inflate/
159obj-$(CONFIG_ZLIB_DEFLATE) += zlib_deflate/
160obj-$(CONFIG_ZLIB_DFLTCC) += zlib_dfltcc/
161obj-$(CONFIG_REED_SOLOMON) += reed_solomon/
162obj-$(CONFIG_BCH) += bch.o
163obj-$(CONFIG_LZO_COMPRESS) += lzo/
164obj-$(CONFIG_LZO_DECOMPRESS) += lzo/
165obj-$(CONFIG_LZ4_COMPRESS) += lz4/
166obj-$(CONFIG_LZ4HC_COMPRESS) += lz4/
167obj-$(CONFIG_LZ4_DECOMPRESS) += lz4/
168obj-$(CONFIG_ZSTD_COMPRESS) += zstd/
169obj-$(CONFIG_ZSTD_DECOMPRESS) += zstd/
170obj-$(CONFIG_XZ_DEC) += xz/
171
172lib-$(CONFIG_DECOMPRESS_GZIP) += decompress_inflate.o
173lib-$(CONFIG_DECOMPRESS_BZIP2) += decompress_bunzip2.o
174lib-$(CONFIG_DECOMPRESS_LZMA) += decompress_unlzma.o
175lib-$(CONFIG_DECOMPRESS_XZ) += decompress_unxz.o
176lib-$(CONFIG_DECOMPRESS_LZO) += decompress_unlzo.o
177lib-$(CONFIG_DECOMPRESS_LZ4) += decompress_unlz4.o
178lib-$(CONFIG_DECOMPRESS_ZSTD) += decompress_unzstd.o
179
180obj-$(CONFIG_TEXTSEARCH) += textsearch.o
181obj-$(CONFIG_TEXTSEARCH_KMP) += ts_kmp.o
182obj-$(CONFIG_TEXTSEARCH_BM) += ts_bm.o
183obj-$(CONFIG_TEXTSEARCH_FSM) += ts_fsm.o
184obj-$(CONFIG_SMP) += percpu_counter.o
185obj-$(CONFIG_AUDIT_GENERIC) += audit.o
186obj-$(CONFIG_AUDIT_COMPAT_GENERIC) += compat_audit.o
187
188obj-$(CONFIG_IOMMU_HELPER) += iommu-helper.o
189obj-$(CONFIG_FAULT_INJECTION) += fault-inject.o
190obj-$(CONFIG_FAULT_INJECTION_USERCOPY) += fault-inject-usercopy.o
191obj-$(CONFIG_NOTIFIER_ERROR_INJECTION) += notifier-error-inject.o
192obj-$(CONFIG_PM_NOTIFIER_ERROR_INJECT) += pm-notifier-error-inject.o
193obj-$(CONFIG_NETDEV_NOTIFIER_ERROR_INJECT) += netdev-notifier-error-inject.o
194obj-$(CONFIG_MEMORY_NOTIFIER_ERROR_INJECT) += memory-notifier-error-inject.o
195obj-$(CONFIG_OF_RECONFIG_NOTIFIER_ERROR_INJECT) += \
196 of-reconfig-notifier-error-inject.o
197obj-$(CONFIG_FUNCTION_ERROR_INJECTION) += error-inject.o
198
199obj-$(CONFIG_CODE_TAGGING) += codetag.o
200
201lib-$(CONFIG_GENERIC_BUG) += bug.o
202
203obj-$(CONFIG_HAVE_ARCH_TRACEHOOK) += syscall.o
204obj-$(CONFIG_ARCH_NEED_CMPXCHG_1_EMU) += cmpxchg-emu.o
205
206obj-$(CONFIG_DYNAMIC_DEBUG_CORE) += dynamic_debug.o
207#ensure exported functions have prototypes
208CFLAGS_dynamic_debug.o := -DDYNAMIC_DEBUG_MODULE
209
210obj-$(CONFIG_SYMBOLIC_ERRNAME) += errname.o
211
212obj-$(CONFIG_NLATTR) += nlattr.o
213
214obj-$(CONFIG_LRU_CACHE) += lru_cache.o
215
216obj-$(CONFIG_GENERIC_CSUM) += checksum.o
217
218obj-$(CONFIG_GENERIC_ATOMIC64) += atomic64.o
219
220obj-$(CONFIG_ATOMIC64_SELFTEST) += atomic64_test.o
221
222obj-$(CONFIG_CPU_RMAP) += cpu_rmap.o
223
224obj-$(CONFIG_CLOSURES) += closure.o
225
226obj-$(CONFIG_DQL) += dynamic_queue_limits.o
227
228obj-$(CONFIG_GLOB) += glob.o
229
230obj-$(CONFIG_DIMLIB) += dim/
231obj-$(CONFIG_SIGNATURE) += digsig.o
232
233lib-$(CONFIG_CLZ_TAB) += clz_tab.o
234
235obj-$(CONFIG_GENERIC_STRNCPY_FROM_USER) += strncpy_from_user.o
236obj-$(CONFIG_GENERIC_STRNLEN_USER) += strnlen_user.o
237
238obj-$(CONFIG_GENERIC_NET_UTILS) += net_utils.o
239
240obj-$(CONFIG_SG_SPLIT) += sg_split.o
241obj-$(CONFIG_SG_POOL) += sg_pool.o
242obj-$(CONFIG_MEMREGION) += memregion.o
243obj-$(CONFIG_STMP_DEVICE) += stmp_device.o
244obj-$(CONFIG_IRQ_POLL) += irq_poll.o
245
246# stackdepot.c should not be instrumented or call instrumented functions.
247# Prevent the compiler from calling builtins like memcmp() or bcmp() from this
248# file.
249CFLAGS_stackdepot.o += -fno-builtin
250CONTEXT_ANALYSIS_stackdepot.o := y
251obj-$(CONFIG_STACKDEPOT) += stackdepot.o
252KASAN_SANITIZE_stackdepot.o := n
253# In particular, instrumenting stackdepot.c with KMSAN will result in infinite
254# recursion.
255KMSAN_SANITIZE_stackdepot.o := n
256KCOV_INSTRUMENT_stackdepot.o := n
257
258obj-$(CONFIG_REF_TRACKER) += ref_tracker.o
259
260libfdt_files = fdt.o fdt_ro.o fdt_wip.o fdt_rw.o fdt_sw.o fdt_strerror.o \
261 fdt_empty_tree.o fdt_addresses.o
262$(foreach file, $(libfdt_files), \
263 $(eval CFLAGS_$(file) = -I $(srctree)/scripts/dtc/libfdt))
264lib-$(CONFIG_LIBFDT) += $(libfdt_files)
265
266obj-$(CONFIG_BOOT_CONFIG) += bootconfig.o
267obj-$(CONFIG_BOOT_CONFIG_EMBED) += bootconfig-data.o
268
269$(obj)/bootconfig-data.o: $(obj)/default.bconf
270
271targets += default.bconf
272filechk_defbconf = cat $(or $(real-prereqs), /dev/null)
273$(obj)/default.bconf: $(CONFIG_BOOT_CONFIG_EMBED_FILE) FORCE
274 $(call filechk,defbconf)
275
276obj-$(CONFIG_CMDLINE_FROM_BOOTCONFIG) += embedded-cmdline.o
277$(obj)/embedded-cmdline.o: $(obj)/embedded_cmdline.bin
278
279# Render the bootconfig "kernel" subtree to a flat cmdline string using
280# the userspace tools/bootconfig parser (-C mode). The runtime prepend
281# helper enforces COMMAND_LINE_SIZE at boot, so no build-time size
282# check is performed here (COMMAND_LINE_SIZE is an arch header
283# constant, not a Kconfig value).
284quiet_cmd_render_cmdline = BCONF2C $@
285 cmd_render_cmdline = \
286 $(objtree)/tools/bootconfig/bootconfig -C $< > $@
287
288targets += embedded_cmdline.bin
289$(obj)/embedded_cmdline.bin: $(obj)/default.bconf $(objtree)/tools/bootconfig/bootconfig FORCE
290 $(call if_changed,render_cmdline)
291
292obj-$(CONFIG_RBTREE_TEST) += rbtree_test.o
293obj-$(CONFIG_INTERVAL_TREE_TEST) += interval_tree_test.o
294
295obj-$(CONFIG_PERCPU_TEST) += percpu_test.o
296
297obj-$(CONFIG_ASN1) += asn1_decoder.o
298obj-$(CONFIG_ASN1_ENCODER) += asn1_encoder.o
299
300obj-$(CONFIG_FONT_SUPPORT) += fonts/
301
302#
303# Build a fast OID lookip registry from include/linux/oid_registry.h
304#
305obj-$(CONFIG_OID_REGISTRY) += oid_registry.o
306
307$(obj)/oid_registry.o: $(obj)/oid_registry_data.c
308
309$(obj)/oid_registry_data.c: $(srctree)/include/linux/oid_registry.h \
310 $(src)/build_OID_registry
311 $(call cmd,build_OID_registry)
312
313quiet_cmd_build_OID_registry = GEN $@
314 cmd_build_OID_registry = perl $(src)/build_OID_registry $< $@
315
316clean-files += oid_registry_data.c
317
318obj-$(CONFIG_UCS2_STRING) += ucs2_string.o
319obj-$(CONFIG_UBSAN) += ubsan.o
320
321UBSAN_SANITIZE_ubsan.o := n
322KASAN_SANITIZE_ubsan.o := n
323KCSAN_SANITIZE_ubsan.o := n
324KMSAN_SANITIZE_ubsan.o := n
325CFLAGS_ubsan.o := -fno-stack-protector $(DISABLE_KSTACK_ERASE)
326
327obj-$(CONFIG_SBITMAP) += sbitmap.o
328
329obj-$(CONFIG_PARMAN) += parman.o
330
331obj-y += group_cpus.o
332
333# GCC library routines
334obj-$(CONFIG_GENERIC_LIB_ASHLDI3) += ashldi3.o
335obj-$(CONFIG_GENERIC_LIB_ASHRDI3) += ashrdi3.o
336obj-$(CONFIG_GENERIC_LIB_LSHRDI3) += lshrdi3.o
337obj-$(CONFIG_GENERIC_LIB_MULDI3) += muldi3.o
338obj-$(CONFIG_GENERIC_LIB_CMPDI2) += cmpdi2.o
339obj-$(CONFIG_GENERIC_LIB_UCMPDI2) += ucmpdi2.o
340obj-$(CONFIG_OBJAGG) += objagg.o
341
342# pldmfw library
343obj-$(CONFIG_PLDMFW) += pldmfw/
344
345obj-$(CONFIG_GENERIC_LIB_DEVMEM_IS_ALLOWED) += devmem_is_allowed.o
346
347obj-$(CONFIG_FIRMWARE_TABLE) += fw_table.o
348
349CONTEXT_ANALYSIS_test_context-analysis.o := y
350obj-$(CONFIG_CONTEXT_ANALYSIS_TEST) += test_context-analysis.o
351
352subdir-$(CONFIG_FORTIFY_SOURCE) += test_fortify