1# SPDX-License-Identifier: GPL-2.0 2# 3# Makefile for the linux kernel. 4# 5 6ifdef CONFIG_FUNCTION_TRACER 7 8# Do not trace tracer code 9CFLAGS_REMOVE_ftrace.o = $(CC_FLAGS_FTRACE) 10 11# Do not trace early setup code 12CFLAGS_REMOVE_als.o = $(CC_FLAGS_FTRACE) 13CFLAGS_REMOVE_early.o = $(CC_FLAGS_FTRACE) 14CFLAGS_REMOVE_early_nobss.o = $(CC_FLAGS_FTRACE) 15 16endif 17 18GCOV_PROFILE_als.o := n 19GCOV_PROFILE_early.o := n 20GCOV_PROFILE_early_nobss.o := n 21 22KCOV_INSTRUMENT_als.o := n 23KCOV_INSTRUMENT_early.o := n 24KCOV_INSTRUMENT_early_nobss.o := n 25 26UBSAN_SANITIZE_als.o := n 27UBSAN_SANITIZE_early.o := n 28UBSAN_SANITIZE_early_nobss.o := n 29 30# 31# Use -march=z900 for als.c to be able to print an error 32# message if the kernel is started on a machine which is too old 33# 34ifneq ($(CC_FLAGS_MARCH),-march=z900) 35CFLAGS_REMOVE_als.o += $(CC_FLAGS_MARCH) 36CFLAGS_REMOVE_als.o += $(CC_FLAGS_EXPOLINE) 37CFLAGS_als.o += -march=z900 38AFLAGS_REMOVE_head.o += $(CC_FLAGS_MARCH) 39AFLAGS_head.o += -march=z900 40endif 41 42CFLAGS_als.o += -D__NO_FORTIFY 43 44# 45# Passing null pointers is ok for smp code, since we access the lowcore here. 46# 47CFLAGS_smp.o := -Wno-nonnull 48 49# 50# Disable tailcall optimizations for stack / callchain walking functions 51# since this might generate broken code when accessing register 15 and 52# passing its content to other functions. 53# 54CFLAGS_stacktrace.o += -fno-optimize-sibling-calls 55CFLAGS_dumpstack.o += -fno-optimize-sibling-calls 56 57# 58# Pass UTS_MACHINE for user_regset definition 59# 60CFLAGS_ptrace.o += -DUTS_MACHINE='"$(UTS_MACHINE)"' 61 62obj-y := traps.o time.o process.o base.o early.o setup.o idle.o vtime.o 63obj-y += processor.o sys_s390.o ptrace.o signal.o cpcmd.o ebcdic.o nmi.o 64obj-y += debug.o irq.o ipl.o dis.o diag.o vdso.o als.o early_nobss.o 65obj-y += sysinfo.o jump_label.o lgr.o os_info.o machine_kexec.o pgm_check.o 66obj-y += runtime_instr.o cache.o fpu.o dumpstack.o guarded_storage.o sthyi.o 67obj-y += entry.o reipl.o relocate_kernel.o kdebugfs.o alternative.o 68obj-y += nospec-branch.o 69 70extra-y += head.o head64.o vmlinux.lds 71 72obj-$(CONFIG_SYSFS) += nospec-sysfs.o 73CFLAGS_REMOVE_nospec-branch.o += $(CC_FLAGS_EXPOLINE) 74 75obj-$(CONFIG_MODULES) += module.o 76obj-$(CONFIG_SMP) += smp.o 77obj-$(CONFIG_SCHED_TOPOLOGY) += topology.o 78obj-$(CONFIG_HIBERNATION) += suspend.o swsusp.o 79obj-$(CONFIG_AUDIT) += audit.o 80compat-obj-$(CONFIG_AUDIT) += compat_audit.o 81obj-$(CONFIG_COMPAT) += compat_linux.o compat_signal.o 82obj-$(CONFIG_COMPAT) += compat_wrapper.o $(compat-obj-y) 83obj-$(CONFIG_EARLY_PRINTK) += early_printk.o 84obj-$(CONFIG_STACKTRACE) += stacktrace.o 85obj-$(CONFIG_KPROBES) += kprobes.o 86obj-$(CONFIG_FUNCTION_TRACER) += mcount.o ftrace.o 87obj-$(CONFIG_CRASH_DUMP) += crash_dump.o 88obj-$(CONFIG_UPROBES) += uprobes.o 89 90obj-$(CONFIG_KEXEC_FILE) += machine_kexec_file.o kexec_image.o 91obj-$(CONFIG_KEXEC_FILE) += kexec_elf.o 92 93obj-$(CONFIG_PERF_EVENTS) += perf_event.o perf_cpum_cf.o perf_cpum_sf.o 94obj-$(CONFIG_PERF_EVENTS) += perf_cpum_cf_events.o perf_regs.o 95 96obj-$(CONFIG_TRACEPOINTS) += trace.o 97 98# vdso 99obj-y += vdso64/ 100obj-$(CONFIG_COMPAT) += vdso32/ 101 102chkbss := head.o head64.o als.o early_nobss.o 103include $(srctree)/arch/s390/scripts/Makefile.chkbss 104