1# SPDX-License-Identifier: GPL-2.0 2# 3# Makefile for the linux kernel. 4# 5 6obj-y = fork.o exec_domain.o panic.o \ 7 cpu.o exit.o softirq.o resource.o \ 8 sysctl.o capability.o ptrace.o user.o \ 9 signal.o sys.o umh.o workqueue.o pid.o task_work.o \ 10 extable.o params.o \ 11 kthread.o sys_ni.o nsproxy.o \ 12 notifier.o ksysfs.o cred.o reboot.o \ 13 async.o range.o smpboot.o ucount.o regset.o ksyms_common.o 14 15obj-$(CONFIG_MULTIUSER) += groups.o 16obj-$(CONFIG_VHOST_TASK) += vhost_task.o 17 18ifdef CONFIG_FUNCTION_TRACER 19# Do not trace internal ftrace files 20CFLAGS_REMOVE_irq_work.o = $(CC_FLAGS_FTRACE) 21endif 22 23# Branch profiling isn't noinstr-safe 24ifdef CONFIG_TRACE_BRANCH_PROFILING 25CFLAGS_context_tracking.o += -DDISABLE_BRANCH_PROFILING 26endif 27 28# Prevents flicker of uninteresting __do_softirq()/__local_bh_disable_ip() 29# in coverage traces. 30KCOV_INSTRUMENT_softirq.o := n 31# Avoid KCSAN instrumentation in softirq ("No shared variables, all the data 32# are CPU local" => assume no data races), to reduce overhead in interrupts. 33KCSAN_SANITIZE_softirq.o = n 34# These are called from save_stack_trace() on slub debug path, 35# and produce insane amounts of uninteresting coverage. 36KCOV_INSTRUMENT_extable.o := n 37KCOV_INSTRUMENT_stacktrace.o := n 38# Don't self-instrument. 39KCOV_INSTRUMENT_kcov.o := n 40# If sanitizers detect any issues in kcov, it may lead to recursion 41# via printk, etc. 42KASAN_SANITIZE_kcov.o := n 43KCSAN_SANITIZE_kcov.o := n 44UBSAN_SANITIZE_kcov.o := n 45KMSAN_SANITIZE_kcov.o := n 46CFLAGS_kcov.o := $(call cc-option, -fno-conserve-stack) -fno-stack-protector 47 48obj-y += sched/ 49obj-y += locking/ 50obj-y += power/ 51obj-y += printk/ 52obj-y += irq/ 53obj-y += rcu/ 54obj-y += livepatch/ 55obj-y += dma/ 56obj-y += entry/ 57obj-y += unwind/ 58obj-$(CONFIG_MODULES) += module/ 59 60obj-$(CONFIG_KCMP) += kcmp.o 61obj-$(CONFIG_FREEZER) += freezer.o 62obj-$(CONFIG_PROFILING) += profile.o 63obj-$(CONFIG_STACKTRACE) += stacktrace.o 64obj-y += time/ 65obj-$(CONFIG_FUTEX) += futex/ 66obj-$(CONFIG_GENERIC_ISA_DMA) += dma.o 67obj-$(CONFIG_SMP) += smp.o 68ifneq ($(CONFIG_SMP),y) 69obj-y += up.o 70endif 71obj-$(CONFIG_UID16) += uid16.o 72obj-$(CONFIG_MODULE_SIG_FORMAT) += module_signature.o 73obj-$(CONFIG_KALLSYMS) += kallsyms.o 74obj-$(CONFIG_KALLSYMS_SELFTEST) += kallsyms_selftest.o 75obj-$(CONFIG_BSD_PROCESS_ACCT) += acct.o 76obj-$(CONFIG_VMCORE_INFO) += vmcore_info.o elfcorehdr.o 77obj-$(CONFIG_CRASH_RESERVE) += crash_reserve.o 78obj-$(CONFIG_KEXEC_CORE) += kexec_core.o 79obj-$(CONFIG_CRASH_DUMP) += crash_core.o 80obj-$(CONFIG_CRASH_DM_CRYPT) += crash_dump_dm_crypt.o 81obj-$(CONFIG_KEXEC) += kexec.o 82obj-$(CONFIG_KEXEC_FILE) += kexec_file.o 83obj-$(CONFIG_KEXEC_ELF) += kexec_elf.o 84obj-$(CONFIG_KEXEC_HANDOVER) += kexec_handover.o 85obj-$(CONFIG_BACKTRACE_SELF_TEST) += backtracetest.o 86obj-$(CONFIG_COMPAT) += compat.o 87obj-$(CONFIG_CGROUPS) += cgroup/ 88obj-$(CONFIG_UTS_NS) += utsname.o 89obj-$(CONFIG_USER_NS) += user_namespace.o 90obj-$(CONFIG_PID_NS) += pid_namespace.o 91obj-$(CONFIG_IKCONFIG) += configs.o 92obj-$(CONFIG_IKHEADERS) += kheaders.o 93obj-$(CONFIG_SMP) += stop_machine.o 94obj-$(CONFIG_AUDIT) += audit.o auditfilter.o 95obj-$(CONFIG_AUDITSYSCALL) += auditsc.o audit_watch.o audit_fsnotify.o audit_tree.o 96obj-$(CONFIG_GCOV_KERNEL) += gcov/ 97obj-$(CONFIG_KCOV) += kcov.o 98obj-$(CONFIG_KPROBES) += kprobes.o 99obj-$(CONFIG_FAIL_FUNCTION) += fail_function.o 100obj-$(CONFIG_KGDB) += debug/ 101obj-$(CONFIG_DETECT_HUNG_TASK) += hung_task.o 102obj-$(CONFIG_LOCKUP_DETECTOR) += watchdog.o 103obj-$(CONFIG_HARDLOCKUP_DETECTOR_BUDDY) += watchdog_buddy.o 104obj-$(CONFIG_HARDLOCKUP_DETECTOR_PERF) += watchdog_perf.o 105obj-$(CONFIG_SECCOMP) += seccomp.o 106obj-$(CONFIG_RELAY) += relay.o 107obj-$(CONFIG_SYSCTL) += utsname_sysctl.o 108obj-$(CONFIG_TASK_DELAY_ACCT) += delayacct.o 109obj-$(CONFIG_TASKSTATS) += taskstats.o tsacct.o 110obj-$(CONFIG_TRACEPOINTS) += tracepoint.o 111obj-$(CONFIG_LATENCYTOP) += latencytop.o 112obj-$(CONFIG_FUNCTION_TRACER) += trace/ 113obj-$(CONFIG_TRACING) += trace/ 114obj-$(CONFIG_TRACE_CLOCK) += trace/ 115obj-$(CONFIG_RING_BUFFER) += trace/ 116obj-$(CONFIG_TRACEPOINTS) += trace/ 117obj-$(CONFIG_RETHOOK) += trace/ 118obj-$(CONFIG_IRQ_WORK) += irq_work.o 119obj-$(CONFIG_CPU_PM) += cpu_pm.o 120obj-$(CONFIG_BPF) += bpf/ 121obj-$(CONFIG_KCSAN) += kcsan/ 122obj-$(CONFIG_SHADOW_CALL_STACK) += scs.o 123obj-$(CONFIG_HAVE_STATIC_CALL) += static_call.o 124obj-$(CONFIG_HAVE_STATIC_CALL_INLINE) += static_call_inline.o 125obj-$(CONFIG_CFI_CLANG) += cfi.o 126 127obj-$(CONFIG_PERF_EVENTS) += events/ 128 129obj-$(CONFIG_USER_RETURN_NOTIFIER) += user-return-notifier.o 130obj-$(CONFIG_PADATA) += padata.o 131obj-$(CONFIG_JUMP_LABEL) += jump_label.o 132obj-$(CONFIG_CONTEXT_TRACKING) += context_tracking.o 133obj-$(CONFIG_TORTURE_TEST) += torture.o 134 135obj-$(CONFIG_HAS_IOMEM) += iomem.o 136obj-$(CONFIG_RSEQ) += rseq.o 137obj-$(CONFIG_WATCH_QUEUE) += watch_queue.o 138 139obj-$(CONFIG_RESOURCE_KUNIT_TEST) += resource_kunit.o 140obj-$(CONFIG_SYSCTL_KUNIT_TEST) += sysctl-test.o 141 142CFLAGS_kstack_erase.o += $(DISABLE_KSTACK_ERASE) 143CFLAGS_kstack_erase.o += $(call cc-option,-mgeneral-regs-only) 144obj-$(CONFIG_KSTACK_ERASE) += kstack_erase.o 145KASAN_SANITIZE_kstack_erase.o := n 146KCSAN_SANITIZE_kstack_erase.o := n 147KCOV_INSTRUMENT_kstack_erase.o := n 148 149obj-$(CONFIG_SCF_TORTURE_TEST) += scftorture.o 150 151$(obj)/configs.o: $(obj)/config_data.gz 152 153targets += config_data config_data.gz 154$(obj)/config_data.gz: $(obj)/config_data FORCE 155 $(call if_changed,gzip) 156 157filechk_cat = cat $< 158 159$(obj)/config_data: $(KCONFIG_CONFIG) FORCE 160 $(call filechk,cat) 161 162# kheaders_data.tar.xz 163$(obj)/kheaders.o: $(obj)/kheaders_data.tar.xz 164 165quiet_cmd_kheaders_data = GEN $@ 166 cmd_kheaders_data = "$<" "$@" "$(obj)/kheaders-srclist" "$(obj)/kheaders-objlist" "$(KBUILD_BUILD_TIMESTAMP)" 167 cmd_kheaders_data_dep = cat $(depfile) >> $(dot-target).cmd; rm -f $(depfile) 168 169define rule_kheaders_data 170 $(call cmd_and_savecmd,kheaders_data) 171 $(call cmd,kheaders_data_dep) 172endef 173 174targets += kheaders_data.tar.xz 175$(obj)/kheaders_data.tar.xz: $(src)/gen_kheaders.sh $(obj)/kheaders-srclist $(obj)/kheaders-objlist $(obj)/kheaders.md5 FORCE 176 $(call if_changed_rule,kheaders_data) 177 178# generated headers in objtree 179# 180# include/generated/utsversion.h is ignored because it is generated 181# after gen_kheaders.sh is executed. (utsversion.h is unneeded for kheaders) 182filechk_kheaders_objlist = \ 183 for d in include "arch/$(SRCARCH)/include"; do \ 184 find "$${d}/generated" ! -path "include/generated/utsversion.h" -a -name "*.h" -print; \ 185 done 186 187$(obj)/kheaders-objlist: FORCE 188 $(call filechk,kheaders_objlist) 189 190# non-generated headers in srctree 191filechk_kheaders_srclist = \ 192 for d in include "arch/$(SRCARCH)/include"; do \ 193 find "$(srctree)/$${d}" -path "$(srctree)/$${d}/generated" -prune -o -name "*.h" -print; \ 194 done 195 196$(obj)/kheaders-srclist: FORCE 197 $(call filechk,kheaders_srclist) 198 199# Some files are symlinks. If symlinks are changed, kheaders_data.tar.xz should 200# be rebuilt. 201filechk_kheaders_md5sum = xargs -r -a $< stat -c %N | md5sum 202 203$(obj)/kheaders.md5: $(obj)/kheaders-srclist FORCE 204 $(call filechk,kheaders_md5sum) 205 206clean-files := kheaders.md5 kheaders-srclist kheaders-objlist 207