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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-13 16:47:05 +07:00
c2f0b54f10
As you see in init/version.c, init_uts_ns.name.machine is initially set to UTS_MACHINE. There is no point to copy the same string. I dug the git history to figure out why this line is here. My best guess is like this: - This line has been around here since the initial support of arm64 by commit9703d9d7f7("arm64: Kernel booting and initialisation"). If ARCH (=arm64) and UTS_MACHINE (=aarch64) do not match, arch/$(ARCH)/Makefile is supposed to override UTS_MACHINE, but the initial version of arch/arm64/Makefile missed to do that. Instead, the boot code copied "aarch64" to init_utsname()->machine. - Commit94ed1f2cb5("arm64: setup: report ELF_PLATFORM as the machine for utsname") replaced "aarch64" with ELF_PLATFORM to make "uname" to reflect the endianness. - ELF_PLATFORM does not help to provide the UTS machine name to rpm target, so commitcfa88c7946("arm64: Set UTS_MACHINE in the Makefile") fixed it. The commit simply replaced ELF_PLATFORM with UTS_MACHINE, but missed the fact the string copy itself is no longer needed. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
66 lines
2.4 KiB
Makefile
66 lines
2.4 KiB
Makefile
#
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# Makefile for the linux kernel.
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#
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CPPFLAGS_vmlinux.lds := -DTEXT_OFFSET=$(TEXT_OFFSET)
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AFLAGS_head.o := -DTEXT_OFFSET=$(TEXT_OFFSET)
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CFLAGS_armv8_deprecated.o := -I$(src)
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CFLAGS_REMOVE_ftrace.o = -pg
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CFLAGS_REMOVE_insn.o = -pg
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CFLAGS_REMOVE_return_address.o = -pg
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# Object file lists.
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arm64-obj-y := debug-monitors.o entry.o irq.o fpsimd.o \
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entry-fpsimd.o process.o ptrace.o setup.o signal.o \
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sys.o stacktrace.o time.o traps.o io.o vdso.o \
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hyp-stub.o psci.o cpu_ops.o insn.o \
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return_address.o cpuinfo.o cpu_errata.o \
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cpufeature.o alternative.o cacheinfo.o \
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smp.o smp_spin_table.o topology.o smccc-call.o
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extra-$(CONFIG_EFI) := efi-entry.o
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OBJCOPYFLAGS := --prefix-symbols=__efistub_
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$(obj)/%.stub.o: $(obj)/%.o FORCE
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$(call if_changed,objcopy)
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arm64-obj-$(CONFIG_COMPAT) += sys32.o kuser32.o signal32.o \
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sys_compat.o entry32.o
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arm64-obj-$(CONFIG_FUNCTION_TRACER) += ftrace.o entry-ftrace.o
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arm64-obj-$(CONFIG_MODULES) += arm64ksyms.o module.o
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arm64-obj-$(CONFIG_ARM64_MODULE_PLTS) += module-plts.o
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arm64-obj-$(CONFIG_PERF_EVENTS) += perf_regs.o perf_callchain.o
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arm64-obj-$(CONFIG_HW_PERF_EVENTS) += perf_event.o
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arm64-obj-$(CONFIG_HAVE_HW_BREAKPOINT) += hw_breakpoint.o
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arm64-obj-$(CONFIG_CPU_PM) += sleep.o suspend.o
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arm64-obj-$(CONFIG_CPU_IDLE) += cpuidle.o
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arm64-obj-$(CONFIG_JUMP_LABEL) += jump_label.o
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arm64-obj-$(CONFIG_KGDB) += kgdb.o
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arm64-obj-$(CONFIG_EFI) += efi.o efi-entry.stub.o
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arm64-obj-$(CONFIG_PCI) += pci.o
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arm64-obj-$(CONFIG_ARMV8_DEPRECATED) += armv8_deprecated.o
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arm64-obj-$(CONFIG_ACPI) += acpi.o
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arm64-obj-$(CONFIG_ACPI_NUMA) += acpi_numa.o
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arm64-obj-$(CONFIG_ARM64_ACPI_PARKING_PROTOCOL) += acpi_parking_protocol.o
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arm64-obj-$(CONFIG_PARAVIRT) += paravirt.o
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arm64-obj-$(CONFIG_RANDOMIZE_BASE) += kaslr.o
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arm64-obj-$(CONFIG_HIBERNATION) += hibernate.o hibernate-asm.o
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arm64-obj-$(CONFIG_KEXEC) += machine_kexec.o relocate_kernel.o \
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cpu-reset.o
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arm64-obj-$(CONFIG_ARM64_RELOC_TEST) += arm64-reloc-test.o
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arm64-reloc-test-y := reloc_test_core.o reloc_test_syms.o
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arm64-obj-$(CONFIG_CRASH_DUMP) += crash_dump.o
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obj-y += $(arm64-obj-y) vdso/ probes/
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obj-m += $(arm64-obj-m)
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head-y := head.o
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extra-y += $(head-y) vmlinux.lds
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ifeq ($(CONFIG_DEBUG_EFI),y)
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AFLAGS_head.o += -DVMLINUX_PATH="\"$(realpath $(objtree)/vmlinux)\""
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endif
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# will be included by each individual module but not by the core kernel itself
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extra-$(CONFIG_DYNAMIC_FTRACE) += ftrace-mod.o
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