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# SPDX-License-Identifier: GPL-2.0
#
# Makefile for the linux kernel.
#

ifdef CONFIG_FUNCTION_TRACER

# Do not trace tracer code
CFLAGS_REMOVE_ftrace.o  = $(CC_FLAGS_FTRACE)

# Do not trace early setup code
CFLAGS_REMOVE_early.o  = $(CC_FLAGS_FTRACE)
CFLAGS_REMOVE_rethook.o  = $(CC_FLAGS_FTRACE)
CFLAGS_REMOVE_stacktrace.o = $(CC_FLAGS_FTRACE)
CFLAGS_REMOVE_unwind_bc.o = $(CC_FLAGS_FTRACE)

endif

GCOV_PROFILE_early.o  := n
KCOV_INSTRUMENT_early.o  := n
UBSAN_SANITIZE_early.o  := n
KASAN_SANITIZE_ipl.o  := n
KASAN_SANITIZE_machine_kexec.o := n

#
# Passing null pointers is ok for smp code, since we access the lowcore here.
#
CFLAGS_smp.o  := -Wno-nonnull

#
# Disable tailcall optimizations for stack / callchain walking functions
# since this might generate broken code when accessing register 15 and
# passing its content to other functions.
#
CFLAGS_stacktrace.o += -fno-optimize-sibling-calls
CFLAGS_dumpstack.o += -fno-optimize-sibling-calls
CFLAGS_unwind_bc.o += -fno-optimize-sibling-calls

obj-y := head64.o traps.o time.o process.o early.o setup.o idle.o vtime.o
obj-y += processor.o syscall.o ptrace.o signal.o cpcmd.o ebcdic.o nmi.o
obj-y += debug.o irq.o ipl.o dis.o vdso.o cpufeature.o
obj-y += sysinfo.o lgr.o os_info.o ctlreg.o
obj-y += runtime_instr.o cache.o fpu.o dumpstack.o guarded_storage.o sthyi.o
obj-y += entry.o reipl.o kdebugfs.o alternative.o skey.o
obj-y += nospec-branch.o ipl_vmparm.o machine_kexec_reloc.o unwind_bc.o
obj-y += smp.o text_amode31.o stacktrace.o abs_lowcore.o facility.o uv.o wti.o
obj-y += diag/

always-$(KBUILD_BUILTIN) += vmlinux.lds

obj-$(CONFIG_SYSFS)  += nospec-sysfs.o
CFLAGS_REMOVE_nospec-branch.o += $(CC_FLAGS_EXPOLINE)

obj-$(CONFIG_SYSFS)  += cpacf.o
obj-$(CONFIG_MODULES)  += module.o
obj-$(CONFIG_SCHED_TOPOLOGY) += topology.o hiperdispatch.o
obj-$(CONFIG_NUMA)  += numa.o
obj-$(CONFIG_AUDIT)  += audit.o
compat-obj-$(CONFIG_AUDIT) += compat_audit.o
obj-$(CONFIG_COMPAT)  += compat_linux.o compat_signal.o
obj-$(CONFIG_COMPAT)  += $(compat-obj-y)
obj-$(CONFIG_EARLY_PRINTK) += early_printk.o
obj-$(CONFIG_KPROBES)  += kprobes.o
obj-$(CONFIG_KPROBES)  += mcount.o
obj-$(CONFIG_RETHOOK)  += rethook.o
obj-$(CONFIG_FUNCTION_TRACER) += ftrace.o
obj-$(CONFIG_FUNCTION_TRACER) += mcount.o
obj-$(CONFIG_CRASH_DUMP) += crash_dump.o
obj-$(CONFIG_KEXEC_CORE) += machine_kexec.o relocate_kernel.o
obj-$(CONFIG_VMCORE_INFO) += vmcore_info.o
obj-$(CONFIG_UPROBES)  += uprobes.o
obj-$(CONFIG_JUMP_LABEL) += jump_label.o

obj-$(CONFIG_KEXEC_FILE) += machine_kexec_file.o kexec_image.o
obj-$(CONFIG_KEXEC_FILE) += kexec_elf.o
obj-$(CONFIG_CERT_STORE) += cert_store.o
obj-$(CONFIG_IMA_SECURE_AND_OR_TRUSTED_BOOT) += ima_arch.o

obj-$(CONFIG_PERF_EVENTS) += perf_event.o
obj-$(CONFIG_PERF_EVENTS) += perf_cpum_cf.o perf_cpum_sf.o
obj-$(CONFIG_PERF_EVENTS) += perf_cpum_cf_events.o perf_regs.o
obj-$(CONFIG_PERF_EVENTS) += perf_pai_crypto.o perf_pai_ext.o

obj-$(CONFIG_TRACEPOINTS) += trace.o

# vdso
obj-y    += vdso64/
obj-$(CONFIG_COMPAT)  += vdso32/