arch/s390/kernel/Makefile

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