1 # SPDX-License-Identifier: GPL-2.0
3 # Makefile for the linux kernel.
6 ifdef CONFIG_FUNCTION_TRACER
8 # Do not trace tracer code
9 CFLAGS_REMOVE_ftrace.o
= $(CC_FLAGS_FTRACE
)
11 # Do not trace early setup code
12 CFLAGS_REMOVE_als.o
= $(CC_FLAGS_FTRACE
)
13 CFLAGS_REMOVE_early.o
= $(CC_FLAGS_FTRACE
)
17 GCOV_PROFILE_als.o
:= n
18 GCOV_PROFILE_early.o
:= n
20 KCOV_INSTRUMENT_als.o
:= n
21 KCOV_INSTRUMENT_early.o
:= n
23 UBSAN_SANITIZE_als.o
:= n
24 UBSAN_SANITIZE_early.o
:= n
27 # Use -march=z900 for als.c to be able to print an error
28 # message if the kernel is started on a machine which is too old
30 ifneq ($(CC_FLAGS_MARCH
),-march
=z900
)
31 CFLAGS_REMOVE_als.o
+= $(CC_FLAGS_MARCH
)
32 CFLAGS_REMOVE_als.o
+= $(CC_FLAGS_EXPOLINE
)
33 CFLAGS_als.o
+= -march
=z900
34 AFLAGS_REMOVE_head.o
+= $(CC_FLAGS_MARCH
)
35 AFLAGS_head.o
+= -march
=z900
39 # Passing null pointers is ok for smp code, since we access the lowcore here.
41 CFLAGS_smp.o
:= -Wno-nonnull
44 # Disable tailcall optimizations for stack / callchain walking functions
45 # since this might generate broken code when accessing register 15 and
46 # passing its content to other functions.
48 CFLAGS_stacktrace.o
+= -fno-optimize-sibling-calls
49 CFLAGS_dumpstack.o
+= -fno-optimize-sibling-calls
52 # Pass UTS_MACHINE for user_regset definition
54 CFLAGS_ptrace.o
+= -DUTS_MACHINE
='"$(UTS_MACHINE)"'
56 obj-y
:= traps.o time.o process.o base.o early.o setup.o idle.o vtime.o
57 obj-y
+= processor.o sys_s390.o ptrace.o signal.o cpcmd.o ebcdic.o nmi.o
58 obj-y
+= debug.o irq.o ipl.o dis.o diag.o vdso.o als.o
59 obj-y
+= sysinfo.o jump_label.o lgr.o os_info.o machine_kexec.o pgm_check.o
60 obj-y
+= runtime_instr.o cache.o fpu.o dumpstack.o guarded_storage.o
61 obj-y
+= entry.o reipl.o relocate_kernel.o kdebugfs.o alternative.o
62 obj-y
+= nospec-branch.o
64 extra-y
+= head.o head64.o vmlinux.lds
66 obj-
$(CONFIG_SYSFS
) += nospec-sysfs.o
67 CFLAGS_REMOVE_nospec-branch.o
+= $(CC_FLAGS_EXPOLINE
)
69 obj-
$(CONFIG_MODULES
) += module.o
70 obj-
$(CONFIG_SMP
) += smp.o
71 obj-
$(CONFIG_SCHED_TOPOLOGY
) += topology.o
72 obj-
$(CONFIG_HIBERNATION
) += suspend.o swsusp.o
73 obj-
$(CONFIG_AUDIT
) += audit.o
74 compat-obj-
$(CONFIG_AUDIT
) += compat_audit.o
75 obj-
$(CONFIG_COMPAT
) += compat_linux.o compat_signal.o
76 obj-
$(CONFIG_COMPAT
) += compat_wrapper.o
$(compat-obj-y
)
77 obj-
$(CONFIG_EARLY_PRINTK
) += early_printk.o
78 obj-
$(CONFIG_STACKTRACE
) += stacktrace.o
79 obj-
$(CONFIG_KPROBES
) += kprobes.o
80 obj-
$(CONFIG_FUNCTION_TRACER
) += mcount.o ftrace.o
81 obj-
$(CONFIG_CRASH_DUMP
) += crash_dump.o
82 obj-
$(CONFIG_UPROBES
) += uprobes.o
84 obj-
$(CONFIG_PERF_EVENTS
) += perf_event.o perf_cpum_cf.o perf_cpum_sf.o
85 obj-
$(CONFIG_PERF_EVENTS
) += perf_cpum_cf_events.o
87 obj-
$(CONFIG_TRACEPOINTS
) += trace.o
91 obj-
$(CONFIG_COMPAT
) += vdso32
/