1# 2# Makefile for the linux kernel. 3# 4 5KCOV_INSTRUMENT_early.o := n 6KCOV_INSTRUMENT_sclp.o := n 7KCOV_INSTRUMENT_als.o := n 8 9ifdef CONFIG_FUNCTION_TRACER 10# Don't trace early setup code and tracing code 11CFLAGS_REMOVE_early.o = $(CC_FLAGS_FTRACE) 12CFLAGS_REMOVE_ftrace.o = $(CC_FLAGS_FTRACE) 13endif 14 15# 16# Passing null pointers is ok for smp code, since we access the lowcore here. 17# 18CFLAGS_smp.o := -Wno-nonnull 19 20# 21# Disable tailcall optimizations for stack / callchain walking functions 22# since this might generate broken code when accessing register 15 and 23# passing its content to other functions. 24# 25CFLAGS_stacktrace.o += -fno-optimize-sibling-calls 26CFLAGS_dumpstack.o += -fno-optimize-sibling-calls 27 28# 29# Pass UTS_MACHINE for user_regset definition 30# 31CFLAGS_ptrace.o += -DUTS_MACHINE='"$(UTS_MACHINE)"' 32 33CFLAGS_sysinfo.o += -w 34 35# 36# Use -march=z900 for sclp.c and als.c to be able to print an error 37# message if the kernel is started on a machine which is too old 38# 39CFLAGS_REMOVE_sclp.o = $(CC_FLAGS_FTRACE) 40CFLAGS_REMOVE_als.o = $(CC_FLAGS_FTRACE) 41ifneq ($(CC_FLAGS_MARCH),-march=z900) 42CFLAGS_REMOVE_sclp.o += $(CC_FLAGS_MARCH) 43CFLAGS_sclp.o += -march=z900 44CFLAGS_REMOVE_als.o += $(CC_FLAGS_MARCH) 45CFLAGS_REMOVE_als.o += $(CC_FLAGS_EXPOLINE) 46CFLAGS_als.o += -march=z900 47AFLAGS_REMOVE_head.o += $(CC_FLAGS_MARCH) 48AFLAGS_head.o += -march=z900 49endif 50GCOV_PROFILE_sclp.o := n 51GCOV_PROFILE_als.o := n 52UBSAN_SANITIZE_als.o := n 53UBSAN_SANITIZE_early.o := n 54UBSAN_SANITIZE_sclp.o := n 55 56obj-y := traps.o time.o process.o base.o early.o setup.o idle.o vtime.o 57obj-y += processor.o sys_s390.o ptrace.o signal.o cpcmd.o ebcdic.o nmi.o 58obj-y += debug.o irq.o ipl.o dis.o diag.o sclp.o vdso.o als.o 59obj-y += sysinfo.o jump_label.o lgr.o os_info.o machine_kexec.o pgm_check.o 60obj-y += runtime_instr.o cache.o fpu.o dumpstack.o 61obj-y += entry.o reipl.o relocate_kernel.o alternative.o 62obj-y += nospec-branch.o 63 64extra-y += head.o head64.o vmlinux.lds 65 66CFLAGS_REMOVE_nospec-branch.o += $(CC_FLAGS_EXPOLINE) 67 68obj-$(CONFIG_MODULES) += module.o 69obj-$(CONFIG_SMP) += smp.o 70obj-$(CONFIG_SCHED_TOPOLOGY) += topology.o 71obj-$(CONFIG_HIBERNATION) += suspend.o swsusp.o 72obj-$(CONFIG_AUDIT) += audit.o 73compat-obj-$(CONFIG_AUDIT) += compat_audit.o 74obj-$(CONFIG_COMPAT) += compat_linux.o compat_signal.o 75obj-$(CONFIG_COMPAT) += compat_wrapper.o $(compat-obj-y) 76 77obj-$(CONFIG_STACKTRACE) += stacktrace.o 78obj-$(CONFIG_KPROBES) += kprobes.o 79obj-$(CONFIG_FUNCTION_TRACER) += mcount.o ftrace.o 80obj-$(CONFIG_CRASH_DUMP) += crash_dump.o 81obj-$(CONFIG_UPROBES) += uprobes.o 82 83obj-$(CONFIG_PERF_EVENTS) += perf_event.o perf_cpum_cf.o perf_cpum_sf.o 84obj-$(CONFIG_PERF_EVENTS) += perf_cpum_cf_events.o 85 86obj-$(CONFIG_TRACEPOINTS) += trace.o 87 88# vdso 89obj-y += vdso64/ 90obj-$(CONFIG_COMPAT) += vdso32/ 91