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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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af3cfdbf56
ARM64_CPU_SUSPEND config option was introduced to make code providing context save/restore selectable only on platforms requiring power management capabilities. Currently ARM64_CPU_SUSPEND depends on the PM_SLEEP config option which in turn is set by the SUSPEND config option. The introduction of CPU_IDLE for arm64 requires that code configured by ARM64_CPU_SUSPEND (context save/restore) should be compiled in in order to enable the CPU idle driver to rely on CPU operations carrying out context save/restore. The ARM64_CPUIDLE config option (ARM64 generic idle driver) is therefore forced to select ARM64_CPU_SUSPEND, even if there may be (ie PM_SLEEP) failed dependencies, which is not a clean way of handling the kernel configuration option. For these reasons, this patch removes the ARM64_CPU_SUSPEND config option and makes the context save/restore dependent on CPU_PM, which is selected whenever either SUSPEND or CPU_IDLE are configured, cleaning up dependencies in the process. This way, code previously configured through ARM64_CPU_SUSPEND is compiled in whenever a power management subsystem requires it to be present in the kernel (SUSPEND || CPU_IDLE), which is the behaviour expected on ARM64 kernels. The cpu_suspend and cpu_init_idle CPU operations are added only if CPU_IDLE is selected, since they are CPU_IDLE specific methods and should be grouped and defined accordingly. PSCI CPU operations are updated to reflect the introduced changes. Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Will Deacon <will.deacon@arm.com> Cc: Krzysztof Kozlowski <k.kozlowski@samsung.com> Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
46 lines
1.7 KiB
Makefile
46 lines
1.7 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_efi-stub.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 := cputable.o 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 return_address.o \
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cpuinfo.o cpu_errata.o alternative.o cacheinfo.o
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arm64-obj-$(CONFIG_COMPAT) += sys32.o kuser32.o signal32.o \
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sys_compat.o entry32.o \
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../../arm/kernel/opcodes.o
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arm64-obj-$(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_SMP) += smp.o smp_spin_table.o topology.o
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arm64-obj-$(CONFIG_PERF_EVENTS) += perf_regs.o
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arm64-obj-$(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-stub.o efi-entry.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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obj-y += $(arm64-obj-y) vdso/
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obj-m += $(arm64-obj-m)
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head-y := head.o
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extra-y := $(head-y) vmlinux.lds
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# vDSO - this must be built first to generate the symbol offsets
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$(call objectify,$(arm64-obj-y)): $(obj)/vdso/vdso-offsets.h
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$(obj)/vdso/vdso-offsets.h: $(obj)/vdso
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