1 # SPDX-License-Identifier: GPL-2.0 <<
2 # 1 #
3 # Makefile for the linux kernel. 2 # Makefile for the linux kernel.
4 # 3 #
5 4
6 obj-y = fork.o exec_domain.o panic.o \ !! 5 obj-y = fork.o exec_domain.o panic.o printk.o \
7 cpu.o exit.o softirq.o resource.o !! 6 cpu.o exit.o itimer.o time.o softirq.o resource.o \
8 sysctl.o capability.o ptrace.o use !! 7 sysctl.o sysctl_binary.o capability.o ptrace.o timer.o user.o \
9 signal.o sys.o umh.o workqueue.o p !! 8 signal.o sys.o kmod.o workqueue.o pid.o task_work.o \
10 extable.o params.o \ !! 9 rcupdate.o extable.o params.o posix-timers.o \
11 kthread.o sys_ni.o nsproxy.o \ !! 10 kthread.o wait.o sys_ni.o posix-cpu-timers.o mutex.o \
12 notifier.o ksysfs.o cred.o reboot. !! 11 hrtimer.o rwsem.o nsproxy.o srcu.o semaphore.o \
13 async.o range.o smpboot.o ucount.o !! 12 notifier.o ksysfs.o cred.o \
14 !! 13 async.o range.o groups.o lglock.o smpboot.o
15 obj-$(CONFIG_USERMODE_DRIVER) += usermode_driv <<
16 obj-$(CONFIG_MULTIUSER) += groups.o <<
17 obj-$(CONFIG_VHOST_TASK) += vhost_task.o <<
18 14
19 ifdef CONFIG_FUNCTION_TRACER 15 ifdef CONFIG_FUNCTION_TRACER
20 # Do not trace internal ftrace files !! 16 # Do not trace debug files and internal ftrace files
21 CFLAGS_REMOVE_irq_work.o = $(CC_FLAGS_FTRACE) !! 17 CFLAGS_REMOVE_lockdep.o = -pg
>> 18 CFLAGS_REMOVE_lockdep_proc.o = -pg
>> 19 CFLAGS_REMOVE_mutex-debug.o = -pg
>> 20 CFLAGS_REMOVE_rtmutex-debug.o = -pg
>> 21 CFLAGS_REMOVE_cgroup-debug.o = -pg
>> 22 CFLAGS_REMOVE_irq_work.o = -pg
22 endif 23 endif
23 24
24 # Prevents flicker of uninteresting __do_softi <<
25 # in coverage traces. <<
26 KCOV_INSTRUMENT_softirq.o := n <<
27 # Avoid KCSAN instrumentation in softirq ("No <<
28 # are CPU local" => assume no data races), to <<
29 KCSAN_SANITIZE_softirq.o = n <<
30 # These are called from save_stack_trace() on <<
31 # and produce insane amounts of uninteresting <<
32 KCOV_INSTRUMENT_extable.o := n <<
33 KCOV_INSTRUMENT_stacktrace.o := n <<
34 # Don't self-instrument. <<
35 KCOV_INSTRUMENT_kcov.o := n <<
36 # If sanitizers detect any issues in kcov, it <<
37 # via printk, etc. <<
38 KASAN_SANITIZE_kcov.o := n <<
39 KCSAN_SANITIZE_kcov.o := n <<
40 UBSAN_SANITIZE_kcov.o := n <<
41 KMSAN_SANITIZE_kcov.o := n <<
42 CFLAGS_kcov.o := $(call cc-option, -fno-conser <<
43 <<
44 obj-y += sched/ 25 obj-y += sched/
45 obj-y += locking/ <<
46 obj-y += power/ 26 obj-y += power/
47 obj-y += printk/ !! 27 obj-y += cpu/
48 obj-y += irq/ <<
49 obj-y += rcu/ <<
50 obj-y += livepatch/ <<
51 obj-y += dma/ <<
52 obj-y += entry/ <<
53 obj-$(CONFIG_MODULES) += module/ <<
54 28
55 obj-$(CONFIG_KCMP) += kcmp.o !! 29 obj-$(CONFIG_CHECKPOINT_RESTORE) += kcmp.o
56 obj-$(CONFIG_FREEZER) += freezer.o 30 obj-$(CONFIG_FREEZER) += freezer.o
57 obj-$(CONFIG_PROFILING) += profile.o 31 obj-$(CONFIG_PROFILING) += profile.o
58 obj-$(CONFIG_STACKTRACE) += stacktrace.o 32 obj-$(CONFIG_STACKTRACE) += stacktrace.o
59 obj-y += time/ 33 obj-y += time/
60 obj-$(CONFIG_FUTEX) += futex/ !! 34 obj-$(CONFIG_DEBUG_MUTEXES) += mutex-debug.o
>> 35 obj-$(CONFIG_LOCKDEP) += lockdep.o
>> 36 ifeq ($(CONFIG_PROC_FS),y)
>> 37 obj-$(CONFIG_LOCKDEP) += lockdep_proc.o
>> 38 endif
>> 39 obj-$(CONFIG_FUTEX) += futex.o
>> 40 ifeq ($(CONFIG_COMPAT),y)
>> 41 obj-$(CONFIG_FUTEX) += futex_compat.o
>> 42 endif
>> 43 obj-$(CONFIG_RT_MUTEXES) += rtmutex.o
>> 44 obj-$(CONFIG_DEBUG_RT_MUTEXES) += rtmutex-debug.o
>> 45 obj-$(CONFIG_RT_MUTEX_TESTER) += rtmutex-tester.o
61 obj-$(CONFIG_GENERIC_ISA_DMA) += dma.o 46 obj-$(CONFIG_GENERIC_ISA_DMA) += dma.o
62 obj-$(CONFIG_SMP) += smp.o 47 obj-$(CONFIG_SMP) += smp.o
63 ifneq ($(CONFIG_SMP),y) 48 ifneq ($(CONFIG_SMP),y)
64 obj-y += up.o 49 obj-y += up.o
65 endif 50 endif
>> 51 obj-$(CONFIG_SMP) += spinlock.o
>> 52 obj-$(CONFIG_DEBUG_SPINLOCK) += spinlock.o
>> 53 obj-$(CONFIG_PROVE_LOCKING) += spinlock.o
66 obj-$(CONFIG_UID16) += uid16.o 54 obj-$(CONFIG_UID16) += uid16.o
67 obj-$(CONFIG_MODULE_SIG_FORMAT) += module_sign !! 55 obj-$(CONFIG_MODULES) += module.o
>> 56 obj-$(CONFIG_MODULE_SIG) += module_signing.o modsign_pubkey.o modsign_certificate.o
68 obj-$(CONFIG_KALLSYMS) += kallsyms.o 57 obj-$(CONFIG_KALLSYMS) += kallsyms.o
69 obj-$(CONFIG_KALLSYMS_SELFTEST) += kallsyms_se <<
70 obj-$(CONFIG_BSD_PROCESS_ACCT) += acct.o 58 obj-$(CONFIG_BSD_PROCESS_ACCT) += acct.o
71 obj-$(CONFIG_VMCORE_INFO) += vmcore_info.o elf <<
72 obj-$(CONFIG_CRASH_RESERVE) += crash_reserve.o <<
73 obj-$(CONFIG_KEXEC_CORE) += kexec_core.o <<
74 obj-$(CONFIG_CRASH_DUMP) += crash_core.o <<
75 obj-$(CONFIG_KEXEC) += kexec.o 59 obj-$(CONFIG_KEXEC) += kexec.o
76 obj-$(CONFIG_KEXEC_FILE) += kexec_file.o <<
77 obj-$(CONFIG_KEXEC_ELF) += kexec_elf.o <<
78 obj-$(CONFIG_BACKTRACE_SELF_TEST) += backtrace 60 obj-$(CONFIG_BACKTRACE_SELF_TEST) += backtracetest.o
79 obj-$(CONFIG_COMPAT) += compat.o 61 obj-$(CONFIG_COMPAT) += compat.o
80 obj-$(CONFIG_CGROUPS) += cgroup/ !! 62 obj-$(CONFIG_CGROUPS) += cgroup.o
>> 63 obj-$(CONFIG_CGROUP_FREEZER) += cgroup_freezer.o
>> 64 obj-$(CONFIG_CPUSETS) += cpuset.o
81 obj-$(CONFIG_UTS_NS) += utsname.o 65 obj-$(CONFIG_UTS_NS) += utsname.o
82 obj-$(CONFIG_USER_NS) += user_namespace.o 66 obj-$(CONFIG_USER_NS) += user_namespace.o
83 obj-$(CONFIG_PID_NS) += pid_namespace.o 67 obj-$(CONFIG_PID_NS) += pid_namespace.o
84 obj-$(CONFIG_IKCONFIG) += configs.o 68 obj-$(CONFIG_IKCONFIG) += configs.o
85 obj-$(CONFIG_IKHEADERS) += kheaders.o !! 69 obj-$(CONFIG_RESOURCE_COUNTERS) += res_counter.o
86 obj-$(CONFIG_SMP) += stop_machine.o 70 obj-$(CONFIG_SMP) += stop_machine.o
>> 71 obj-$(CONFIG_KPROBES_SANITY_TEST) += test_kprobes.o
87 obj-$(CONFIG_AUDIT) += audit.o auditfilter.o 72 obj-$(CONFIG_AUDIT) += audit.o auditfilter.o
88 obj-$(CONFIG_AUDITSYSCALL) += auditsc.o audit_ !! 73 obj-$(CONFIG_AUDITSYSCALL) += auditsc.o
>> 74 obj-$(CONFIG_AUDIT_WATCH) += audit_watch.o
>> 75 obj-$(CONFIG_AUDIT_TREE) += audit_tree.o
89 obj-$(CONFIG_GCOV_KERNEL) += gcov/ 76 obj-$(CONFIG_GCOV_KERNEL) += gcov/
90 obj-$(CONFIG_KCOV) += kcov.o <<
91 obj-$(CONFIG_KPROBES) += kprobes.o 77 obj-$(CONFIG_KPROBES) += kprobes.o
92 obj-$(CONFIG_FAIL_FUNCTION) += fail_function.o <<
93 obj-$(CONFIG_KGDB) += debug/ 78 obj-$(CONFIG_KGDB) += debug/
94 obj-$(CONFIG_DETECT_HUNG_TASK) += hung_task.o 79 obj-$(CONFIG_DETECT_HUNG_TASK) += hung_task.o
95 obj-$(CONFIG_LOCKUP_DETECTOR) += watchdog.o 80 obj-$(CONFIG_LOCKUP_DETECTOR) += watchdog.o
96 obj-$(CONFIG_HARDLOCKUP_DETECTOR_BUDDY) += wat !! 81 obj-$(CONFIG_GENERIC_HARDIRQS) += irq/
97 obj-$(CONFIG_HARDLOCKUP_DETECTOR_PERF) += watc <<
98 obj-$(CONFIG_SECCOMP) += seccomp.o 82 obj-$(CONFIG_SECCOMP) += seccomp.o
>> 83 obj-$(CONFIG_RCU_TORTURE_TEST) += rcutorture.o
>> 84 obj-$(CONFIG_TREE_RCU) += rcutree.o
>> 85 obj-$(CONFIG_TREE_PREEMPT_RCU) += rcutree.o
>> 86 obj-$(CONFIG_TREE_RCU_TRACE) += rcutree_trace.o
>> 87 obj-$(CONFIG_TINY_RCU) += rcutiny.o
>> 88 obj-$(CONFIG_TINY_PREEMPT_RCU) += rcutiny.o
99 obj-$(CONFIG_RELAY) += relay.o 89 obj-$(CONFIG_RELAY) += relay.o
100 obj-$(CONFIG_SYSCTL) += utsname_sysctl.o 90 obj-$(CONFIG_SYSCTL) += utsname_sysctl.o
101 obj-$(CONFIG_TASK_DELAY_ACCT) += delayacct.o 91 obj-$(CONFIG_TASK_DELAY_ACCT) += delayacct.o
102 obj-$(CONFIG_TASKSTATS) += taskstats.o tsacct. 92 obj-$(CONFIG_TASKSTATS) += taskstats.o tsacct.o
103 obj-$(CONFIG_TRACEPOINTS) += tracepoint.o 93 obj-$(CONFIG_TRACEPOINTS) += tracepoint.o
104 obj-$(CONFIG_LATENCYTOP) += latencytop.o 94 obj-$(CONFIG_LATENCYTOP) += latencytop.o
>> 95 obj-$(CONFIG_BINFMT_ELF) += elfcore.o
>> 96 obj-$(CONFIG_COMPAT_BINFMT_ELF) += elfcore.o
>> 97 obj-$(CONFIG_BINFMT_ELF_FDPIC) += elfcore.o
105 obj-$(CONFIG_FUNCTION_TRACER) += trace/ 98 obj-$(CONFIG_FUNCTION_TRACER) += trace/
106 obj-$(CONFIG_TRACING) += trace/ 99 obj-$(CONFIG_TRACING) += trace/
107 obj-$(CONFIG_TRACE_CLOCK) += trace/ 100 obj-$(CONFIG_TRACE_CLOCK) += trace/
108 obj-$(CONFIG_RING_BUFFER) += trace/ 101 obj-$(CONFIG_RING_BUFFER) += trace/
109 obj-$(CONFIG_TRACEPOINTS) += trace/ 102 obj-$(CONFIG_TRACEPOINTS) += trace/
110 obj-$(CONFIG_RETHOOK) += trace/ <<
111 obj-$(CONFIG_IRQ_WORK) += irq_work.o 103 obj-$(CONFIG_IRQ_WORK) += irq_work.o
112 obj-$(CONFIG_CPU_PM) += cpu_pm.o 104 obj-$(CONFIG_CPU_PM) += cpu_pm.o
113 obj-$(CONFIG_BPF) += bpf/ <<
114 obj-$(CONFIG_KCSAN) += kcsan/ <<
115 obj-$(CONFIG_SHADOW_CALL_STACK) += scs.o <<
116 obj-$(CONFIG_HAVE_STATIC_CALL) += static_call. <<
117 obj-$(CONFIG_HAVE_STATIC_CALL_INLINE) += stati <<
118 obj-$(CONFIG_CFI_CLANG) += cfi.o <<
119 105
120 obj-$(CONFIG_PERF_EVENTS) += events/ 106 obj-$(CONFIG_PERF_EVENTS) += events/
121 107
122 obj-$(CONFIG_USER_RETURN_NOTIFIER) += user-ret 108 obj-$(CONFIG_USER_RETURN_NOTIFIER) += user-return-notifier.o
123 obj-$(CONFIG_PADATA) += padata.o 109 obj-$(CONFIG_PADATA) += padata.o
>> 110 obj-$(CONFIG_CRASH_DUMP) += crash_dump.o
124 obj-$(CONFIG_JUMP_LABEL) += jump_label.o 111 obj-$(CONFIG_JUMP_LABEL) += jump_label.o
125 obj-$(CONFIG_CONTEXT_TRACKING) += context_trac 112 obj-$(CONFIG_CONTEXT_TRACKING) += context_tracking.o
126 obj-$(CONFIG_TORTURE_TEST) += torture.o <<
127 113
128 obj-$(CONFIG_HAS_IOMEM) += iomem.o !! 114 $(obj)/configs.o: $(obj)/config_data.h
129 obj-$(CONFIG_RSEQ) += rseq.o <<
130 obj-$(CONFIG_WATCH_QUEUE) += watch_queue.o <<
131 115
132 obj-$(CONFIG_RESOURCE_KUNIT_TEST) += resource_ !! 116 # config_data.h contains the same information as ikconfig.h but gzipped.
133 obj-$(CONFIG_SYSCTL_KUNIT_TEST) += sysctl-test !! 117 # Info from config_data can be extracted from /proc/config*
>> 118 targets += config_data.gz
>> 119 $(obj)/config_data.gz: $(KCONFIG_CONFIG) FORCE
>> 120 $(call if_changed,gzip)
134 121
135 CFLAGS_stackleak.o += $(DISABLE_STACKLEAK_PLUG !! 122 filechk_ikconfiggz = (echo "static const char kernel_config_data[] __used = MAGIC_START"; cat $< | scripts/bin2c; echo "MAGIC_END;")
136 obj-$(CONFIG_GCC_PLUGIN_STACKLEAK) += stacklea !! 123 targets += config_data.h
137 KASAN_SANITIZE_stackleak.o := n !! 124 $(obj)/config_data.h: $(obj)/config_data.gz FORCE
138 KCSAN_SANITIZE_stackleak.o := n !! 125 $(call filechk,ikconfiggz)
139 KCOV_INSTRUMENT_stackleak.o := n <<
140 126
141 obj-$(CONFIG_SCF_TORTURE_TEST) += scftorture.o !! 127 $(obj)/time.o: $(obj)/timeconst.h
142 128
143 $(obj)/configs.o: $(obj)/config_data.gz !! 129 quiet_cmd_hzfile = HZFILE $@
>> 130 cmd_hzfile = echo "hz=$(CONFIG_HZ)" > $@
144 131
145 targets += config_data config_data.gz !! 132 targets += hz.bc
146 $(obj)/config_data.gz: $(obj)/config_data FORC !! 133 $(obj)/hz.bc: $(objtree)/include/config/hz.h FORCE
147 $(call if_changed,gzip) !! 134 $(call if_changed,hzfile)
>> 135
>> 136 quiet_cmd_bc = BC $@
>> 137 cmd_bc = bc -q $(filter-out FORCE,$^) > $@
>> 138
>> 139 targets += timeconst.h
>> 140 $(obj)/timeconst.h: $(obj)/hz.bc $(src)/timeconst.bc FORCE
>> 141 $(call if_changed,bc)
148 142
149 filechk_cat = cat $< !! 143 ifeq ($(CONFIG_MODULE_SIG),y)
>> 144 #
>> 145 # Pull the signing certificate and any extra certificates into the kernel
>> 146 #
150 147
151 $(obj)/config_data: $(KCONFIG_CONFIG) FORCE !! 148 quiet_cmd_touch = TOUCH $@
152 $(call filechk,cat) !! 149 cmd_touch = touch $@
153 150
154 $(obj)/kheaders.o: $(obj)/kheaders_data.tar.xz !! 151 extra_certificates:
>> 152 $(call cmd,touch)
155 153
156 quiet_cmd_genikh = CHK $(obj)/kheaders_dat !! 154 kernel/modsign_certificate.o: signing_key.x509 extra_certificates
157 cmd_genikh = $(CONFIG_SHELL) $(srctree)/ <<
158 $(obj)/kheaders_data.tar.xz: FORCE <<
159 $(call cmd,genikh) <<
160 155
161 clean-files := kheaders_data.tar.xz kheaders.m !! 156 ###############################################################################
>> 157 #
>> 158 # If module signing is requested, say by allyesconfig, but a key has not been
>> 159 # supplied, then one will need to be generated to make sure the build does not
>> 160 # fail and that the kernel may be used afterwards.
>> 161 #
>> 162 ###############################################################################
>> 163 ifndef CONFIG_MODULE_SIG_HASH
>> 164 $(error Could not determine digest type to use from kernel config)
>> 165 endif
>> 166
>> 167 signing_key.priv signing_key.x509: x509.genkey
>> 168 @echo "###"
>> 169 @echo "### Now generating an X.509 key pair to be used for signing modules."
>> 170 @echo "###"
>> 171 @echo "### If this takes a long time, you might wish to run rngd in the"
>> 172 @echo "### background to keep the supply of entropy topped up. It"
>> 173 @echo "### needs to be run as root, and uses a hardware random"
>> 174 @echo "### number generator if one is available."
>> 175 @echo "###"
>> 176 openssl req -new -nodes -utf8 -$(CONFIG_MODULE_SIG_HASH) -days 36500 \
>> 177 -batch -x509 -config x509.genkey \
>> 178 -outform DER -out signing_key.x509 \
>> 179 -keyout signing_key.priv 2>&1
>> 180 @echo "###"
>> 181 @echo "### Key pair generated."
>> 182 @echo "###"
>> 183
>> 184 x509.genkey:
>> 185 @echo Generating X.509 key generation config
>> 186 @echo >x509.genkey "[ req ]"
>> 187 @echo >>x509.genkey "default_bits = 4096"
>> 188 @echo >>x509.genkey "distinguished_name = req_distinguished_name"
>> 189 @echo >>x509.genkey "prompt = no"
>> 190 @echo >>x509.genkey "string_mask = utf8only"
>> 191 @echo >>x509.genkey "x509_extensions = myexts"
>> 192 @echo >>x509.genkey
>> 193 @echo >>x509.genkey "[ req_distinguished_name ]"
>> 194 @echo >>x509.genkey "O = Magrathea"
>> 195 @echo >>x509.genkey "CN = Glacier signing key"
>> 196 @echo >>x509.genkey "emailAddress = slartibartfast@magrathea.h2g2"
>> 197 @echo >>x509.genkey
>> 198 @echo >>x509.genkey "[ myexts ]"
>> 199 @echo >>x509.genkey "basicConstraints=critical,CA:FALSE"
>> 200 @echo >>x509.genkey "keyUsage=digitalSignature"
>> 201 @echo >>x509.genkey "subjectKeyIdentifier=hash"
>> 202 @echo >>x509.genkey "authorityKeyIdentifier=keyid"
>> 203 endif
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.