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0774a6ed29
Almost all machines use GENERIC_CLOCKEVENTS, so it feels wrong to
require each one to select that symbol manually.
Instead, enable it whenever CONFIG_LEGACY_TIMER_TICK is disabled as
a simplification. It should be possible to select both
GENERIC_CLOCKEVENTS and LEGACY_TIMER_TICK from an architecture now
and decide at runtime between the two.
For the clockevents arch-support.txt file, this means that additional
architectures are marked as TODO when they have at least one machine
that still uses LEGACY_TIMER_TICK, rather than being marked 'ok' when
at least one machine has been converted. This means that both m68k and
arm (for riscpc) revert to TODO.
At this point, we could just always enable CONFIG_GENERIC_CLOCKEVENTS
rather than leaving it off when not needed. I built an m68k
defconfig kernel (using gcc-10.1.0) and found that this would add
around 5.5KB in kernel image size:
text data bss dec hex filename
3861936 1092236 196656 5150828 4e986c obj-m68k/vmlinux-no-clockevent
3866201 1093832 196184 5156217 4ead79 obj-m68k/vmlinux-clockevent
On Arm (MACH_RPC), that difference appears to be twice as large,
around 11KB on top of an 6MB vmlinux.
Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Tested-by: Geert Uytterhoeven <geert@linux-m68k.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
108 lines
2.1 KiB
Plaintext
108 lines
2.1 KiB
Plaintext
# SPDX-License-Identifier: GPL-2.0-only
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#
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# For a description of the syntax of this configuration file,
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# see Documentation/kbuild/kconfig-language.rst.
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#
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config NDS32
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def_bool y
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select ARCH_32BIT_OFF_T
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select ARCH_HAS_DMA_PREP_COHERENT
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select ARCH_HAS_SYNC_DMA_FOR_CPU
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select ARCH_HAS_SYNC_DMA_FOR_DEVICE
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select ARCH_WANT_FRAME_POINTERS if FTRACE
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select CLKSRC_MMIO
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select CLONE_BACKWARDS
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select COMMON_CLK
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select DMA_DIRECT_REMAP
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select GENERIC_ATOMIC64
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select GENERIC_CPU_DEVICES
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select GENERIC_IRQ_CHIP
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select GENERIC_IRQ_SHOW
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select GENERIC_IOREMAP
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select GENERIC_LIB_ASHLDI3
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select GENERIC_LIB_ASHRDI3
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select GENERIC_LIB_CMPDI2
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select GENERIC_LIB_LSHRDI3
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select GENERIC_LIB_MULDI3
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select GENERIC_LIB_UCMPDI2
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select GENERIC_STRNCPY_FROM_USER
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select GENERIC_STRNLEN_USER
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select GENERIC_TIME_VSYSCALL
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select HANDLE_DOMAIN_IRQ
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select HAVE_ARCH_TRACEHOOK
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select HAVE_DEBUG_KMEMLEAK
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select HAVE_EXIT_THREAD
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select HAVE_REGS_AND_STACK_ACCESS_API
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select HAVE_PERF_EVENTS
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select IRQ_DOMAIN
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select LOCKDEP_SUPPORT
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select MODULES_USE_ELF_RELA
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select OF
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select OF_EARLY_FLATTREE
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select NO_IOPORT_MAP
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select RTC_LIB
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select THREAD_INFO_IN_TASK
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select HAVE_FUNCTION_TRACER
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select HAVE_FUNCTION_GRAPH_TRACER
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select HAVE_FTRACE_MCOUNT_RECORD
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select HAVE_DYNAMIC_FTRACE
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select SET_FS
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help
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Andes(nds32) Linux support.
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config GENERIC_CALIBRATE_DELAY
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def_bool y
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config GENERIC_CSUM
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def_bool y
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config GENERIC_HWEIGHT
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def_bool y
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config GENERIC_LOCKBREAK
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def_bool y
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depends on PREEMPTION
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config TRACE_IRQFLAGS_SUPPORT
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def_bool y
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config STACKTRACE_SUPPORT
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def_bool y
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config FIX_EARLYCON_MEM
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def_bool y
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config PGTABLE_LEVELS
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default 2
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menu "System Type"
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source "arch/nds32/Kconfig.cpu"
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config NR_CPUS
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int
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default 1
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config MMU
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def_bool y
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config NDS32_BUILTIN_DTB
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string "Builtin DTB"
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default ""
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help
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User can use it to specify the dts of the SoC
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endmenu
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menu "Kernel Features"
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source "kernel/Kconfig.hz"
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endmenu
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menu "Power management options"
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config SYS_SUPPORTS_APM_EMULATION
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bool
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config ARCH_SUSPEND_POSSIBLE
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def_bool y
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source "kernel/power/Kconfig"
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endmenu
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