xref: /openbmc/linux/kernel/Makefile (revision 85250a24) 
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
14
15obj-$(CONFIG_USERMODE_DRIVER) += usermode_driver.o
16obj-$(CONFIG_MODULES) += kmod.o
17obj-$(CONFIG_MULTIUSER) += groups.o
18
19ifdef CONFIG_FUNCTION_TRACER
20# Do not trace internal ftrace files
21CFLAGS_REMOVE_irq_work.o = $(CC_FLAGS_FTRACE)
22endif
23
24# Prevents flicker of uninteresting __do_softirq()/__local_bh_disable_ip()
25# in coverage traces.
26KCOV_INSTRUMENT_softirq.o := n
27# Avoid KCSAN instrumentation in softirq ("No shared variables, all the data
28# are CPU local" => assume no data races), to reduce overhead in interrupts.
29KCSAN_SANITIZE_softirq.o = n
30# These are called from save_stack_trace() on slub debug path,
31# and produce insane amounts of uninteresting coverage.
32KCOV_INSTRUMENT_extable.o := n
33KCOV_INSTRUMENT_stacktrace.o := n
34# Don't self-instrument.
35KCOV_INSTRUMENT_kcov.o := n
36# If sanitizers detect any issues in kcov, it may lead to recursion
37# via printk, etc.
38KASAN_SANITIZE_kcov.o := n
39KCSAN_SANITIZE_kcov.o := n
40UBSAN_SANITIZE_kcov.o := n
41KMSAN_SANITIZE_kcov.o := n
42CFLAGS_kcov.o := $(call cc-option, -fno-conserve-stack) -fno-stack-protector
43
44# Don't instrument error handlers
45CFLAGS_REMOVE_cfi.o := $(CC_FLAGS_CFI)
46
47obj-y += sched/
48obj-y += locking/
49obj-y += power/
50obj-y += printk/
51obj-y += irq/
52obj-y += rcu/
53obj-y += livepatch/
54obj-y += dma/
55obj-y += entry/
56obj-$(CONFIG_MODULES) += module/
57
58obj-$(CONFIG_KCMP) += kcmp.o
59obj-$(CONFIG_FREEZER) += freezer.o
60obj-$(CONFIG_PROFILING) += profile.o
61obj-$(CONFIG_STACKTRACE) += stacktrace.o
62obj-y += time/
63obj-$(CONFIG_FUTEX) += futex/
64obj-$(CONFIG_GENERIC_ISA_DMA) += dma.o
65obj-$(CONFIG_SMP) += smp.o
66ifneq ($(CONFIG_SMP),y)
67obj-y += up.o
68endif
69obj-$(CONFIG_UID16) += uid16.o
70obj-$(CONFIG_MODULE_SIG_FORMAT) += module_signature.o
71obj-$(CONFIG_KALLSYMS) += kallsyms.o
72obj-$(CONFIG_BSD_PROCESS_ACCT) += acct.o
73obj-$(CONFIG_CRASH_CORE) += crash_core.o
74obj-$(CONFIG_KEXEC_CORE) += kexec_core.o
75obj-$(CONFIG_KEXEC) += kexec.o
76obj-$(CONFIG_KEXEC_FILE) += kexec_file.o
77obj-$(CONFIG_KEXEC_ELF) += kexec_elf.o
78obj-$(CONFIG_BACKTRACE_SELF_TEST) += backtracetest.o
79obj-$(CONFIG_COMPAT) += compat.o
80obj-$(CONFIG_CGROUPS) += cgroup/
81obj-$(CONFIG_UTS_NS) += utsname.o
82obj-$(CONFIG_USER_NS) += user_namespace.o
83obj-$(CONFIG_PID_NS) += pid_namespace.o
84obj-$(CONFIG_IKCONFIG) += configs.o
85obj-$(CONFIG_IKHEADERS) += kheaders.o
86obj-$(CONFIG_SMP) += stop_machine.o
87obj-$(CONFIG_AUDIT) += audit.o auditfilter.o
88obj-$(CONFIG_AUDITSYSCALL) += auditsc.o audit_watch.o audit_fsnotify.o audit_tree.o
89obj-$(CONFIG_GCOV_KERNEL) += gcov/
90obj-$(CONFIG_KCOV) += kcov.o
91obj-$(CONFIG_KPROBES) += kprobes.o
92obj-$(CONFIG_FAIL_FUNCTION) += fail_function.o
93obj-$(CONFIG_KGDB) += debug/
94obj-$(CONFIG_DETECT_HUNG_TASK) += hung_task.o
95obj-$(CONFIG_LOCKUP_DETECTOR) += watchdog.o
96obj-$(CONFIG_HARDLOCKUP_DETECTOR_PERF) += watchdog_hld.o
97obj-$(CONFIG_SECCOMP) += seccomp.o
98obj-$(CONFIG_RELAY) += relay.o
99obj-$(CONFIG_SYSCTL) += utsname_sysctl.o
100obj-$(CONFIG_TASK_DELAY_ACCT) += delayacct.o
101obj-$(CONFIG_TASKSTATS) += taskstats.o tsacct.o
102obj-$(CONFIG_TRACEPOINTS) += tracepoint.o
103obj-$(CONFIG_LATENCYTOP) += latencytop.o
104obj-$(CONFIG_FUNCTION_TRACER) += trace/
105obj-$(CONFIG_TRACING) += trace/
106obj-$(CONFIG_TRACE_CLOCK) += trace/
107obj-$(CONFIG_RING_BUFFER) += trace/
108obj-$(CONFIG_TRACEPOINTS) += trace/
109obj-$(CONFIG_RETHOOK) += trace/
110obj-$(CONFIG_IRQ_WORK) += irq_work.o
111obj-$(CONFIG_CPU_PM) += cpu_pm.o
112obj-$(CONFIG_BPF) += bpf/
113obj-$(CONFIG_KCSAN) += kcsan/
114obj-$(CONFIG_SHADOW_CALL_STACK) += scs.o
115obj-$(CONFIG_HAVE_STATIC_CALL) += static_call.o
116obj-$(CONFIG_HAVE_STATIC_CALL_INLINE) += static_call_inline.o
117obj-$(CONFIG_CFI_CLANG) += cfi.o
118
119obj-$(CONFIG_PERF_EVENTS) += events/
120
121obj-$(CONFIG_USER_RETURN_NOTIFIER) += user-return-notifier.o
122obj-$(CONFIG_PADATA) += padata.o
123obj-$(CONFIG_CRASH_DUMP) += crash_dump.o
124obj-$(CONFIG_JUMP_LABEL) += jump_label.o
125obj-$(CONFIG_CONTEXT_TRACKING) += context_tracking.o
126obj-$(CONFIG_TORTURE_TEST) += torture.o
127
128obj-$(CONFIG_HAS_IOMEM) += iomem.o
129obj-$(CONFIG_RSEQ) += rseq.o
130obj-$(CONFIG_WATCH_QUEUE) += watch_queue.o
131
132obj-$(CONFIG_RESOURCE_KUNIT_TEST) += resource_kunit.o
133obj-$(CONFIG_SYSCTL_KUNIT_TEST) += sysctl-test.o
134
135CFLAGS_stackleak.o += $(DISABLE_STACKLEAK_PLUGIN)
136obj-$(CONFIG_GCC_PLUGIN_STACKLEAK) += stackleak.o
137KASAN_SANITIZE_stackleak.o := n
138KCSAN_SANITIZE_stackleak.o := n
139KCOV_INSTRUMENT_stackleak.o := n
140
141obj-$(CONFIG_SCF_TORTURE_TEST) += scftorture.o
142
143$(obj)/configs.o: $(obj)/config_data.gz
144
145targets += config_data config_data.gz
146$(obj)/config_data.gz: $(obj)/config_data FORCE
147	$(call if_changed,gzip)
148
149filechk_cat = cat $<
150
151$(obj)/config_data: $(KCONFIG_CONFIG) FORCE
152	$(call filechk,cat)
153
154$(obj)/kheaders.o: $(obj)/kheaders_data.tar.xz
155
156quiet_cmd_genikh = CHK     $(obj)/kheaders_data.tar.xz
157      cmd_genikh = $(CONFIG_SHELL) $(srctree)/kernel/gen_kheaders.sh $@
158$(obj)/kheaders_data.tar.xz: FORCE
159	$(call cmd,genikh)
160
161clean-files := kheaders_data.tar.xz kheaders.md5
162