2 # Makefile for the linux kernel.
5 KCOV_INSTRUMENT_early.o := n
6 KCOV_INSTRUMENT_sclp.o := n
8 ifdef CONFIG_FUNCTION_TRACER
9 # Don't trace early setup code and tracing code
10 CFLAGS_REMOVE_early.o = $(CC_FLAGS_FTRACE)
11 CFLAGS_REMOVE_ftrace.o = $(CC_FLAGS_FTRACE)
15 # Passing null pointers is ok for smp code, since we access the lowcore here.
17 CFLAGS_smp.o := -Wno-nonnull
20 # Disable tailcall optimizations for stack / callchain walking functions
21 # since this might generate broken code when accessing register 15 and
22 # passing its content to other functions.
24 CFLAGS_stacktrace.o += -fno-optimize-sibling-calls
25 CFLAGS_dumpstack.o += -fno-optimize-sibling-calls
28 # Pass UTS_MACHINE for user_regset definition
30 CFLAGS_ptrace.o += -DUTS_MACHINE='"$(UTS_MACHINE)"'
32 CFLAGS_sysinfo.o += -w
35 # Use -march=z900 for sclp.c to be able to print an error message if
36 # the kernel is started on a machine which is too old
38 CFLAGS_REMOVE_sclp.o = $(CC_FLAGS_FTRACE)
39 ifneq ($(CC_FLAGS_MARCH),-march=z900)
40 CFLAGS_REMOVE_sclp.o += $(CC_FLAGS_MARCH)
41 CFLAGS_sclp.o += -march=z900
42 AFLAGS_REMOVE_head.o += $(CC_FLAGS_MARCH)
43 AFLAGS_head.o += -march=z900
45 GCOV_PROFILE_sclp.o := n
47 obj-y := traps.o time.o process.o base.o early.o setup.o idle.o vtime.o
48 obj-y += processor.o sys_s390.o ptrace.o signal.o cpcmd.o ebcdic.o nmi.o
49 obj-y += debug.o irq.o ipl.o dis.o diag.o sclp.o vdso.o
50 obj-y += sysinfo.o jump_label.o lgr.o os_info.o machine_kexec.o pgm_check.o
51 obj-y += runtime_instr.o cache.o fpu.o dumpstack.o
52 obj-y += entry.o reipl.o relocate_kernel.o
54 extra-y += head.o head64.o vmlinux.lds
56 obj-$(CONFIG_MODULES) += s390_ksyms.o module.o
57 obj-$(CONFIG_SMP) += smp.o
58 obj-$(CONFIG_SCHED_TOPOLOGY) += topology.o
59 obj-$(CONFIG_HIBERNATION) += suspend.o swsusp.o
60 obj-$(CONFIG_AUDIT) += audit.o
61 compat-obj-$(CONFIG_AUDIT) += compat_audit.o
62 obj-$(CONFIG_COMPAT) += compat_linux.o compat_signal.o
63 obj-$(CONFIG_COMPAT) += compat_wrapper.o $(compat-obj-y)
65 obj-$(CONFIG_STACKTRACE) += stacktrace.o
66 obj-$(CONFIG_KPROBES) += kprobes.o
67 obj-$(CONFIG_FUNCTION_TRACER) += mcount.o ftrace.o
68 obj-$(CONFIG_CRASH_DUMP) += crash_dump.o
69 obj-$(CONFIG_UPROBES) += uprobes.o
71 obj-$(CONFIG_PERF_EVENTS) += perf_event.o perf_cpum_cf.o perf_cpum_sf.o
72 obj-$(CONFIG_PERF_EVENTS) += perf_cpum_cf_events.o
74 obj-$(CONFIG_TRACEPOINTS) += trace.o
78 obj-$(CONFIG_COMPAT) += vdso32/