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1#
2# Makefile for the linux kernel.
3#
4
5obj-y = fork.o exec_domain.o panic.o \
6 cpu.o exit.o itimer.o time.o softirq.o resource.o \
7 sysctl.o sysctl_binary.o capability.o ptrace.o timer.o user.o \
8 signal.o sys.o kmod.o workqueue.o pid.o task_work.o \
9 extable.o params.o posix-timers.o \
10 kthread.o sys_ni.o posix-cpu-timers.o \
11 hrtimer.o nsproxy.o \
12 notifier.o ksysfs.o cred.o reboot.o \
13 async.o range.o groups.o smpboot.o
14
15ifdef CONFIG_FUNCTION_TRACER
16# Do not trace debug files and internal ftrace files
17CFLAGS_REMOVE_cgroup-debug.o = -pg
18CFLAGS_REMOVE_irq_work.o = -pg
19endif
20
21# cond_syscall is currently not LTO compatible
22CFLAGS_sys_ni.o = $(DISABLE_LTO)
23
24obj-y += sched
25obj-y += locking
26obj-y += power
27obj-y += printk
28obj-y += irq
29obj-y += rcu
30
31obj-$(CONFIG_CHECKPOINT_RESTORE) += kcmp.o
32obj-$(CONFIG_FREEZER) += freezer.o
33obj-$(CONFIG_PROFILING) += profile.o
34obj-$(CONFIG_STACKTRACE) += stacktrace.o
35obj-y += time
36obj-$(CONFIG_FUTEX) += futex.o
37ifeq ($(CONFIG_COMPAT),y)
38obj-$(CONFIG_FUTEX) += futex_compat.o
39endif
40obj-$(CONFIG_GENERIC_ISA_DMA) += dma.o
41obj-$(CONFIG_SMP) += smp.o
42ifneq ($(CONFIG_SMP),y)
43obj-y += up.o
44endif
45obj-$(CONFIG_UID16) += uid16.o
46obj-$(CONFIG_SYSTEM_TRUSTED_KEYRING) += system_keyring.o system_certificates.o
47obj-$(CONFIG_MODULES) += module.o
48obj-$(CONFIG_MODULE_SIG) += module_signing.o
49obj-$(CONFIG_KALLSYMS) += kallsyms.o
50obj-$(CONFIG_BSD_PROCESS_ACCT) += acct.o
51obj-$(CONFIG_KEXEC) += kexec.o
52obj-$(CONFIG_BACKTRACE_SELF_TEST) += backtracetest.o
53obj-$(CONFIG_COMPAT) += compat.o
54obj-$(CONFIG_CGROUPS) += cgroup.o
55obj-$(CONFIG_CGROUP_FREEZER) += cgroup_freezer.o
56obj-$(CONFIG_CPUSETS) += cpuset.o
57obj-$(CONFIG_UTS_NS) += utsname.o
58obj-$(CONFIG_USER_NS) += user_namespace.o
59obj-$(CONFIG_PID_NS) += pid_namespace.o
60obj-$(CONFIG_IKCONFIG) += configs.o
61obj-$(CONFIG_RESOURCE_COUNTERS) += res_counter.o
62obj-$(CONFIG_SMP) += stop_machine.o
63obj-$(CONFIG_KPROBES_SANITY_TEST) += test_kprobes.o
64obj-$(CONFIG_AUDIT) += audit.o auditfilter.o
65obj-$(CONFIG_AUDITSYSCALL) += auditsc.o
66obj-$(CONFIG_AUDIT_WATCH) += audit_watch.o
67obj-$(CONFIG_AUDIT_TREE) += audit_tree.o
68obj-$(CONFIG_GCOV_KERNEL) += gcov
69obj-$(CONFIG_KPROBES) += kprobes.o
70obj-$(CONFIG_KGDB) += debug
71obj-$(CONFIG_DETECT_HUNG_TASK) += hung_task.o
72obj-$(CONFIG_LOCKUP_DETECTOR) += watchdog.o
73obj-$(CONFIG_SECCOMP) += seccomp.o
74obj-$(CONFIG_RELAY) += relay.o
75obj-$(CONFIG_SYSCTL) += utsname_sysctl.o
76obj-$(CONFIG_TASK_DELAY_ACCT) += delayacct.o
77obj-$(CONFIG_TASKSTATS) += taskstats.o tsacct.o
78obj-$(CONFIG_TRACEPOINTS) += tracepoint.o
79obj-$(CONFIG_LATENCYTOP) += latencytop.o
80obj-$(CONFIG_BINFMT_ELF) += elfcore.o
81obj-$(CONFIG_COMPAT_BINFMT_ELF) += elfcore.o
82obj-$(CONFIG_BINFMT_ELF_FDPIC) += elfcore.o
83obj-$(CONFIG_FUNCTION_TRACER) += trace
84obj-$(CONFIG_TRACING) += trace
85obj-$(CONFIG_TRACE_CLOCK) += trace
86obj-$(CONFIG_RING_BUFFER) += trace
87obj-$(CONFIG_TRACEPOINTS) += trace
88obj-$(CONFIG_IRQ_WORK) += irq_work.o
89obj-$(CONFIG_CPU_PM) += cpu_pm.o
90
91obj-$(CONFIG_PERF_EVENTS) += events
92
93obj-$(CONFIG_USER_RETURN_NOTIFIER) += user-return-notifier.o
94obj-$(CONFIG_PADATA) += padata.o
95obj-$(CONFIG_CRASH_DUMP) += crash_dump.o
96obj-$(CONFIG_JUMP_LABEL) += jump_label.o
97obj-$(CONFIG_CONTEXT_TRACKING) += context_tracking.o
98obj-$(CONFIG_TORTURE_TEST) += torture.o
99
100$(obj)/configs.o: $(obj)/config_data.h
101
102# config_data.h contains the same information as ikconfig.h but gzipped.
103# Info from config_data can be extracted from /proc/config*
104targets += config_data.gz
105$(obj)/config_data.gz: $(KCONFIG_CONFIG) FORCE
106 $(call if_changed,gzip)
107
108 filechk_ikconfiggz = (echo "static const char kernel_config_data[] __used = MAGIC_START"; cat $< | scripts/bin2c; echo "MAGIC_END;")
109targets += config_data.h
110$(obj)/config_data.h: $(obj)/config_data.gz FORCE
111 $(call filechk,ikconfiggz)
112
113$(obj)/time.o: $(obj)/timeconst.h
114
115quiet_cmd_hzfile = HZFILE $@
116 cmd_hzfile = echo "hz=$(CONFIG_HZ)" > $@
117
118targets += hz.bc
119$(obj)/hz.bc: $(objtree)/include/config/hz.h FORCE
120 $(call if_changed,hzfile)
121
122quiet_cmd_bc = BC $@
123 cmd_bc = bc -q $(filter-out FORCE,$^) > $@
124
125targets += timeconst.h
126$(obj)/timeconst.h: $(obj)/hz.bc $(src)/timeconst.bc FORCE
127 $(call if_changed,bc)
128
129###############################################################################
130#
131# Roll all the X.509 certificates that we can find together and pull them into
132# the kernel so that they get loaded into the system trusted keyring during
133# boot.
134#
135# We look in the source root and the build root for all files whose name ends
136# in ".x509". Unfortunately, this will generate duplicate filenames, so we
137# have make canonicalise the pathnames and then sort them to discard the
138# duplicates.
139#
140###############################################################################
141ifeq ($(CONFIG_SYSTEM_TRUSTED_KEYRING),y)
142X509_CERTIFICATES-y := $(wildcard *.x509) $(wildcard $(srctree)/*.x509)
143X509_CERTIFICATES-$(CONFIG_MODULE_SIG) += $(objtree)/signing_key.x509
144X509_CERTIFICATES-raw := $(sort $(foreach CERT,$(X509_CERTIFICATES-y), \
145 $(or $(realpath $(CERT)),$(CERT))))
146X509_CERTIFICATES := $(subst $(realpath $(objtree))/,,$(X509_CERTIFICATES-raw))
147
148ifeq ($(X509_CERTIFICATES),)
149$(warning *** No X.509 certificates found ***)
150endif
151
152ifneq ($(wildcard $(obj)/.x509.list),)
153ifneq ($(shell cat $(obj)/.x509.list),$(X509_CERTIFICATES))
154$(info X.509 certificate list changed)
155$(shell rm $(obj)/.x509.list)
156endif
157endif
158
159kernel/system_certificates.o: $(obj)/x509_certificate_list
160
161quiet_cmd_x509certs = CERTS $@
162 cmd_x509certs = cat $(X509_CERTIFICATES) /dev/null >$@ $(foreach X509,$(X509_CERTIFICATES),; echo " - Including cert $(X509)")
163
164targets += $(obj)/x509_certificate_list
165$(obj)/x509_certificate_list: $(X509_CERTIFICATES) $(obj)/.x509.list
166 $(call if_changed,x509certs)
167
168targets += $(obj)/.x509.list
169$(obj)/.x509.list:
170 @echo $(X509_CERTIFICATES) >$@
171endif
172
173clean-files := x509_certificate_list .x509.list
174
175ifeq ($(CONFIG_MODULE_SIG),y)
176###############################################################################
177#
178# If module signing is requested, say by allyesconfig, but a key has not been
179# supplied, then one will need to be generated to make sure the build does not
180# fail and that the kernel may be used afterwards.
181#
182###############################################################################
183ifndef CONFIG_MODULE_SIG_HASH
184$(error Could not determine digest type to use from kernel config)
185endif
186
187signing_key.priv signing_key.x509: x509.genkey
188 @echo "###"
189 @echo "### Now generating an X.509 key pair to be used for signing modules."
190 @echo "###"
191 @echo "### If this takes a long time, you might wish to run rngd in the"
192 @echo "### background to keep the supply of entropy topped up. It"
193 @echo "### needs to be run as root, and uses a hardware random"
194 @echo "### number generator if one is available."
195 @echo "###"
196 openssl req -new -nodes -utf8 -$(CONFIG_MODULE_SIG_HASH) -days 36500 \
197 -batch -x509 -config x509.genkey \
198 -outform DER -out signing_key.x509 \
199 -keyout signing_key.priv 2>&1
200 @echo "###"
201 @echo "### Key pair generated."
202 @echo "###"
203
204x509.genkey:
205 @echo Generating X.509 key generation config
206 @echo >x509.genkey "[ req ]"
207 @echo >>x509.genkey "default_bits = 4096"
208 @echo >>x509.genkey "distinguished_name = req_distinguished_name"
209 @echo >>x509.genkey "prompt = no"
210 @echo >>x509.genkey "string_mask = utf8only"
211 @echo >>x509.genkey "x509_extensions = myexts"
212 @echo >>x509.genkey
213 @echo >>x509.genkey "[ req_distinguished_name ]"
214 @echo >>x509.genkey "O = Magrathea"
215 @echo >>x509.genkey "CN = Glacier signing key"
216 @echo >>x509.genkey "emailAddress = slartibartfast@magrathea.h2g2"
217 @echo >>x509.genkey
218 @echo >>x509.genkey "[ myexts ]"
219 @echo >>x509.genkey "basicConstraints=critical,CA:FALSE"
220 @echo >>x509.genkey "keyUsage=digitalSignature"
221 @echo >>x509.genkey "subjectKeyIdentifier=hash"
222 @echo >>x509.genkey "authorityKeyIdentifier=keyid"
223endif
1#
2# Makefile for the linux kernel.
3#
4
5obj-y = fork.o exec_domain.o panic.o \
6 cpu.o exit.o softirq.o resource.o \
7 sysctl.o sysctl_binary.o capability.o ptrace.o user.o \
8 signal.o sys.o kmod.o workqueue.o pid.o task_work.o \
9 extable.o params.o \
10 kthread.o sys_ni.o nsproxy.o \
11 notifier.o ksysfs.o cred.o reboot.o \
12 async.o range.o smpboot.o ucount.o
13
14obj-$(CONFIG_MULTIUSER) += groups.o
15
16ifdef CONFIG_FUNCTION_TRACER
17# Do not trace internal ftrace files
18CFLAGS_REMOVE_irq_work.o = $(CC_FLAGS_FTRACE)
19endif
20
21# Prevents flicker of uninteresting __do_softirq()/__local_bh_disable_ip()
22# in coverage traces.
23KCOV_INSTRUMENT_softirq.o := n
24# These are called from save_stack_trace() on slub debug path,
25# and produce insane amounts of uninteresting coverage.
26KCOV_INSTRUMENT_module.o := n
27KCOV_INSTRUMENT_extable.o := n
28# Don't self-instrument.
29KCOV_INSTRUMENT_kcov.o := n
30KASAN_SANITIZE_kcov.o := n
31
32# cond_syscall is currently not LTO compatible
33CFLAGS_sys_ni.o = $(DISABLE_LTO)
34
35obj-y += sched
36obj-y += locking
37obj-y += power
38obj-y += printk
39obj-y += irq
40obj-y += rcu
41obj-y += livepatch
42
43obj-$(CONFIG_CHECKPOINT_RESTORE) += kcmp.o
44obj-$(CONFIG_FREEZER) += freezer.o
45obj-$(CONFIG_PROFILING) += profile.o
46obj-$(CONFIG_STACKTRACE) += stacktrace.o
47obj-y += time
48obj-$(CONFIG_FUTEX) += futex.o
49ifeq ($(CONFIG_COMPAT),y)
50obj-$(CONFIG_FUTEX) += futex_compat.o
51endif
52obj-$(CONFIG_GENERIC_ISA_DMA) += dma.o
53obj-$(CONFIG_SMP) += smp.o
54ifneq ($(CONFIG_SMP),y)
55obj-y += up.o
56endif
57obj-$(CONFIG_UID16) += uid16.o
58obj-$(CONFIG_MODULES) += module.o
59obj-$(CONFIG_MODULE_SIG) += module_signing.o
60obj-$(CONFIG_KALLSYMS) += kallsyms.o
61obj-$(CONFIG_BSD_PROCESS_ACCT) += acct.o
62obj-$(CONFIG_KEXEC_CORE) += kexec_core.o
63obj-$(CONFIG_KEXEC) += kexec.o
64obj-$(CONFIG_KEXEC_FILE) += kexec_file.o
65obj-$(CONFIG_BACKTRACE_SELF_TEST) += backtracetest.o
66obj-$(CONFIG_COMPAT) += compat.o
67obj-$(CONFIG_CGROUPS) += cgroup.o
68obj-$(CONFIG_CGROUP_FREEZER) += cgroup_freezer.o
69obj-$(CONFIG_CGROUP_PIDS) += cgroup_pids.o
70obj-$(CONFIG_CPUSETS) += cpuset.o
71obj-$(CONFIG_UTS_NS) += utsname.o
72obj-$(CONFIG_USER_NS) += user_namespace.o
73obj-$(CONFIG_PID_NS) += pid_namespace.o
74obj-$(CONFIG_IKCONFIG) += configs.o
75obj-$(CONFIG_SMP) += stop_machine.o
76obj-$(CONFIG_KPROBES_SANITY_TEST) += test_kprobes.o
77obj-$(CONFIG_AUDIT) += audit.o auditfilter.o
78obj-$(CONFIG_AUDITSYSCALL) += auditsc.o
79obj-$(CONFIG_AUDIT_WATCH) += audit_watch.o audit_fsnotify.o
80obj-$(CONFIG_AUDIT_TREE) += audit_tree.o
81obj-$(CONFIG_GCOV_KERNEL) += gcov
82obj-$(CONFIG_KCOV) += kcov.o
83obj-$(CONFIG_KPROBES) += kprobes.o
84obj-$(CONFIG_KGDB) += debug
85obj-$(CONFIG_DETECT_HUNG_TASK) += hung_task.o
86obj-$(CONFIG_LOCKUP_DETECTOR) += watchdog.o
87obj-$(CONFIG_HARDLOCKUP_DETECTOR) += watchdog_hld.o
88obj-$(CONFIG_SECCOMP) += seccomp.o
89obj-$(CONFIG_RELAY) += relay.o
90obj-$(CONFIG_SYSCTL) += utsname_sysctl.o
91obj-$(CONFIG_TASK_DELAY_ACCT) += delayacct.o
92obj-$(CONFIG_TASKSTATS) += taskstats.o tsacct.o
93obj-$(CONFIG_TRACEPOINTS) += tracepoint.o
94obj-$(CONFIG_LATENCYTOP) += latencytop.o
95obj-$(CONFIG_ELFCORE) += elfcore.o
96obj-$(CONFIG_FUNCTION_TRACER) += trace
97obj-$(CONFIG_TRACING) += trace
98obj-$(CONFIG_TRACE_CLOCK) += trace
99obj-$(CONFIG_RING_BUFFER) += trace
100obj-$(CONFIG_TRACEPOINTS) += trace
101obj-$(CONFIG_IRQ_WORK) += irq_work.o
102obj-$(CONFIG_CPU_PM) += cpu_pm.o
103obj-$(CONFIG_BPF) += bpf
104
105obj-$(CONFIG_PERF_EVENTS) += events
106
107obj-$(CONFIG_USER_RETURN_NOTIFIER) += user-return-notifier.o
108obj-$(CONFIG_PADATA) += padata.o
109obj-$(CONFIG_CRASH_DUMP) += crash_dump.o
110obj-$(CONFIG_JUMP_LABEL) += jump_label.o
111obj-$(CONFIG_CONTEXT_TRACKING) += context_tracking.o
112obj-$(CONFIG_TORTURE_TEST) += torture.o
113obj-$(CONFIG_MEMBARRIER) += membarrier.o
114
115obj-$(CONFIG_HAS_IOMEM) += memremap.o
116
117$(obj)/configs.o: $(obj)/config_data.h
118
119targets += config_data.gz
120$(obj)/config_data.gz: $(KCONFIG_CONFIG) FORCE
121 $(call if_changed,gzip)
122
123 filechk_ikconfiggz = (echo "static const char kernel_config_data[] __used = MAGIC_START"; cat $< | scripts/basic/bin2c; echo "MAGIC_END;")
124targets += config_data.h
125$(obj)/config_data.h: $(obj)/config_data.gz FORCE
126 $(call filechk,ikconfiggz)