2 # Makefile for the linux kernel.
5 obj-y = fork.o exec_domain.o panic.o printk.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 rcupdate.o extable.o params.o posix-timers.o \
10 kthread.o wait.o sys_ni.o posix-cpu-timers.o mutex.o \
11 hrtimer.o rwsem.o nsproxy.o srcu.o semaphore.o \
12 notifier.o ksysfs.o cred.o \
13 async.o range.o groups.o lglock.o smpboot.o
15 ifdef CONFIG_FUNCTION_TRACER
16 # Do not trace debug files and internal ftrace files
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
28 obj-$(CONFIG_CHECKPOINT_RESTORE) += kcmp.o
29 obj-$(CONFIG_FREEZER) += freezer.o
30 obj-$(CONFIG_PROFILING) += profile.o
31 obj-$(CONFIG_STACKTRACE) += stacktrace.o
33 obj-$(CONFIG_DEBUG_MUTEXES) += mutex-debug.o
34 obj-$(CONFIG_LOCKDEP) += lockdep.o
35 ifeq ($(CONFIG_PROC_FS),y)
36 obj-$(CONFIG_LOCKDEP) += lockdep_proc.o
38 obj-$(CONFIG_FUTEX) += futex.o
39 ifeq ($(CONFIG_COMPAT),y)
40 obj-$(CONFIG_FUTEX) += futex_compat.o
42 obj-$(CONFIG_RT_MUTEXES) += rtmutex.o
43 obj-$(CONFIG_DEBUG_RT_MUTEXES) += rtmutex-debug.o
44 obj-$(CONFIG_RT_MUTEX_TESTER) += rtmutex-tester.o
45 obj-$(CONFIG_GENERIC_ISA_DMA) += dma.o
46 obj-$(CONFIG_SMP) += smp.o
47 ifneq ($(CONFIG_SMP),y)
50 obj-$(CONFIG_SMP) += spinlock.o
51 obj-$(CONFIG_DEBUG_SPINLOCK) += spinlock.o
52 obj-$(CONFIG_PROVE_LOCKING) += spinlock.o
53 obj-$(CONFIG_UID16) += uid16.o
54 obj-$(CONFIG_MODULES) += module.o
55 obj-$(CONFIG_MODULE_SIG) += module_signing.o modsign_pubkey.o modsign_certificate.o
56 obj-$(CONFIG_KALLSYMS) += kallsyms.o
57 obj-$(CONFIG_BSD_PROCESS_ACCT) += acct.o
58 obj-$(CONFIG_KEXEC) += kexec.o
59 obj-$(CONFIG_BACKTRACE_SELF_TEST) += backtracetest.o
60 obj-$(CONFIG_COMPAT) += compat.o
61 obj-$(CONFIG_CGROUPS) += cgroup.o
62 obj-$(CONFIG_CGROUP_FREEZER) += cgroup_freezer.o
63 obj-$(CONFIG_CPUSETS) += cpuset.o
64 obj-$(CONFIG_UTS_NS) += utsname.o
65 obj-$(CONFIG_USER_NS) += user_namespace.o
66 obj-$(CONFIG_PID_NS) += pid_namespace.o
67 obj-$(CONFIG_IKCONFIG) += configs.o
68 obj-$(CONFIG_RESOURCE_COUNTERS) += res_counter.o
69 obj-$(CONFIG_SMP) += stop_machine.o
70 obj-$(CONFIG_KPROBES_SANITY_TEST) += test_kprobes.o
71 obj-$(CONFIG_AUDIT) += audit.o auditfilter.o
72 obj-$(CONFIG_AUDITSYSCALL) += auditsc.o
73 obj-$(CONFIG_AUDIT_WATCH) += audit_watch.o
74 obj-$(CONFIG_AUDIT_TREE) += audit_tree.o
75 obj-$(CONFIG_GCOV_KERNEL) += gcov/
76 obj-$(CONFIG_KPROBES) += kprobes.o
77 obj-$(CONFIG_KGDB) += debug/
78 obj-$(CONFIG_DETECT_HUNG_TASK) += hung_task.o
79 obj-$(CONFIG_LOCKUP_DETECTOR) += watchdog.o
80 obj-$(CONFIG_GENERIC_HARDIRQS) += irq/
81 obj-$(CONFIG_SECCOMP) += seccomp.o
82 obj-$(CONFIG_RCU_TORTURE_TEST) += rcutorture.o
83 obj-$(CONFIG_TREE_RCU) += rcutree.o
84 obj-$(CONFIG_TREE_PREEMPT_RCU) += rcutree.o
85 obj-$(CONFIG_TREE_RCU_TRACE) += rcutree_trace.o
86 obj-$(CONFIG_TINY_RCU) += rcutiny.o
87 obj-$(CONFIG_TINY_PREEMPT_RCU) += rcutiny.o
88 obj-$(CONFIG_RELAY) += relay.o
89 obj-$(CONFIG_SYSCTL) += utsname_sysctl.o
90 obj-$(CONFIG_TASK_DELAY_ACCT) += delayacct.o
91 obj-$(CONFIG_TASKSTATS) += taskstats.o tsacct.o
92 obj-$(CONFIG_TRACEPOINTS) += tracepoint.o
93 obj-$(CONFIG_LATENCYTOP) += latencytop.o
94 obj-$(CONFIG_BINFMT_ELF) += elfcore.o
95 obj-$(CONFIG_COMPAT_BINFMT_ELF) += elfcore.o
96 obj-$(CONFIG_BINFMT_ELF_FDPIC) += elfcore.o
97 obj-$(CONFIG_FUNCTION_TRACER) += trace/
98 obj-$(CONFIG_TRACING) += trace/
99 obj-$(CONFIG_TRACE_CLOCK) += trace/
100 obj-$(CONFIG_RING_BUFFER) += trace/
101 obj-$(CONFIG_TRACEPOINTS) += trace/
102 obj-$(CONFIG_IRQ_WORK) += irq_work.o
103 obj-$(CONFIG_CPU_PM) += cpu_pm.o
105 obj-$(CONFIG_PERF_EVENTS) += events/
107 obj-$(CONFIG_USER_RETURN_NOTIFIER) += user-return-notifier.o
108 obj-$(CONFIG_PADATA) += padata.o
109 obj-$(CONFIG_CRASH_DUMP) += crash_dump.o
110 obj-$(CONFIG_JUMP_LABEL) += jump_label.o
111 obj-$(CONFIG_CONTEXT_TRACKING) += context_tracking.o
113 $(obj)/configs.o: $(obj)/config_data.h
115 # config_data.h contains the same information as ikconfig.h but gzipped.
116 # Info from config_data can be extracted from /proc/config*
117 targets += config_data.gz
118 $(obj)/config_data.gz: $(KCONFIG_CONFIG) FORCE
119 $(call if_changed,gzip)
121 filechk_ikconfiggz = (echo "static const char kernel_config_data[] __used = MAGIC_START"; cat $< | scripts/bin2c; echo "MAGIC_END;")
122 targets += config_data.h
123 $(obj)/config_data.h: $(obj)/config_data.gz FORCE
124 $(call filechk,ikconfiggz)
126 $(obj)/time.o: $(obj)/timeconst.h
128 quiet_cmd_hzfile = HZFILE $@
129 cmd_hzfile = echo "hz=$(CONFIG_HZ)" > $@
132 $(obj)/hz.bc: $(objtree)/include/config/hz.h FORCE
133 $(call if_changed,hzfile)
136 cmd_bc = bc -q $(filter-out FORCE,$^) > $@
138 targets += timeconst.h
139 $(obj)/timeconst.h: $(obj)/hz.bc $(src)/timeconst.bc FORCE
140 $(call if_changed,bc)
142 ifeq ($(CONFIG_MODULE_SIG),y)
144 # Pull the signing certificate and any extra certificates into the kernel
147 quiet_cmd_touch = TOUCH $@
153 kernel/modsign_certificate.o: signing_key.x509 extra_certificates
155 ###############################################################################
157 # If module signing is requested, say by allyesconfig, but a key has not been
158 # supplied, then one will need to be generated to make sure the build does not
159 # fail and that the kernel may be used afterwards.
161 ###############################################################################
162 ifndef CONFIG_MODULE_SIG_HASH
163 $(error Could not determine digest type to use from kernel config)
166 signing_key.priv signing_key.x509: x509.genkey
168 @echo "### Now generating an X.509 key pair to be used for signing modules."
170 @echo "### If this takes a long time, you might wish to run rngd in the"
171 @echo "### background to keep the supply of entropy topped up. It"
172 @echo "### needs to be run as root, and uses a hardware random"
173 @echo "### number generator if one is available."
175 openssl req -new -nodes -utf8 -$(CONFIG_MODULE_SIG_HASH) -days 36500 \
176 -batch -x509 -config x509.genkey \
177 -outform DER -out signing_key.x509 \
178 -keyout signing_key.priv
180 @echo "### Key pair generated."
184 @echo Generating X.509 key generation config
185 @echo >x509.genkey "[ req ]"
186 @echo >>x509.genkey "default_bits = 4096"
187 @echo >>x509.genkey "distinguished_name = req_distinguished_name"
188 @echo >>x509.genkey "prompt = no"
189 @echo >>x509.genkey "string_mask = utf8only"
190 @echo >>x509.genkey "x509_extensions = myexts"
192 @echo >>x509.genkey "[ req_distinguished_name ]"
193 @echo >>x509.genkey "O = Magrathea"
194 @echo >>x509.genkey "CN = Glacier signing key"
195 @echo >>x509.genkey "emailAddress = slartibartfast@magrathea.h2g2"
197 @echo >>x509.genkey "[ myexts ]"
198 @echo >>x509.genkey "basicConstraints=critical,CA:FALSE"
199 @echo >>x509.genkey "keyUsage=digitalSignature"
200 @echo >>x509.genkey "subjectKeyIdentifier=hash"
201 @echo >>x509.genkey "authorityKeyIdentifier=keyid"