007dc78fea
Pull locking updates from Ingo Molnar:
"Here are the locking changes in this cycle:
- rwsem unification and simpler micro-optimizations to prepare for
more intrusive (and more lucrative) scalability improvements in
v5.3 (Waiman Long)
- Lockdep irq state tracking flag usage cleanups (Frederic
Weisbecker)
- static key improvements (Jakub Kicinski, Peter Zijlstra)
- misc updates, cleanups and smaller fixes"
* 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (26 commits)
locking/lockdep: Remove unnecessary unlikely()
locking/static_key: Don't take sleeping locks in __static_key_slow_dec_deferred()
locking/static_key: Factor out the fast path of static_key_slow_dec()
locking/static_key: Add support for deferred static branches
locking/lockdep: Test all incompatible scenarios at once in check_irq_usage()
locking/lockdep: Avoid bogus Clang warning
locking/lockdep: Generate LOCKF_ bit composites
locking/lockdep: Use expanded masks on find_usage_*() functions
locking/lockdep: Map remaining magic numbers to lock usage mask names
locking/lockdep: Move valid_state() inside CONFIG_TRACE_IRQFLAGS && CONFIG_PROVE_LOCKING
locking/rwsem: Prevent unneeded warning during locking selftest
locking/rwsem: Optimize rwsem structure for uncontended lock acquisition
locking/rwsem: Enable lock event counting
locking/lock_events: Don't show pvqspinlock events on bare metal
locking/lock_events: Make lock_events available for all archs & other locks
locking/qspinlock_stat: Introduce generic lockevent_*() counting APIs
locking/rwsem: Enhance DEBUG_RWSEMS_WARN_ON() macro
locking/rwsem: Add debug check for __down_read*()
locking/rwsem: Micro-optimize rwsem_try_read_lock_unqueued()
locking/rwsem: Move rwsem internal function declarations to rwsem-xadd.h
...
113 lines
3 KiB
Plaintext
113 lines
3 KiB
Plaintext
# SPDX-License-Identifier: GPL-2.0
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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.txt.
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#
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config C6X
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def_bool y
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select ARCH_32BIT_OFF_T
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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 CLKDEV_LOOKUP
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select GENERIC_ATOMIC64
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select GENERIC_IRQ_SHOW
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select HAVE_ARCH_TRACEHOOK
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select SPARSE_IRQ
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select IRQ_DOMAIN
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select OF
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select OF_EARLY_FLATTREE
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select GENERIC_CLOCKEVENTS
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select MODULES_USE_ELF_RELA
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select ARCH_NO_COHERENT_DMA_MMAP
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select MMU_GATHER_NO_RANGE if MMU
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config MMU
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def_bool n
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config FPU
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def_bool n
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config GENERIC_CALIBRATE_DELAY
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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_BUG
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def_bool y
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depends on BUG
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config C6X_BIG_KERNEL
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bool "Build a big kernel"
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help
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The C6X function call instruction has a limited range of +/- 2MiB.
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This is sufficient for most kernels, but some kernel configurations
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with lots of compiled-in functionality may require a larger range
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for function calls. Use this option to have the compiler generate
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function calls with 32-bit range. This will make the kernel both
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larger and slower.
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If unsure, say N.
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# Use the generic interrupt handling code in kernel/irq/
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config CMDLINE_BOOL
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bool "Default bootloader kernel arguments"
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config CMDLINE
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string "Kernel command line"
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depends on CMDLINE_BOOL
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default "console=ttyS0,57600"
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help
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On some architectures there is currently no way for the boot loader
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to pass arguments to the kernel. For these architectures, you should
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supply some command-line options at build time by entering them
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here.
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config CMDLINE_FORCE
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bool "Force default kernel command string"
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depends on CMDLINE_BOOL
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default n
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help
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Set this to have arguments from the default kernel command string
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override those passed by the boot loader.
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config CPU_BIG_ENDIAN
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bool "Build big-endian kernel"
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default n
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help
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Say Y if you plan on running a kernel in big-endian mode.
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Note that your board must be properly built and your board
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port must properly enable any big-endian related features
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of your chipset/board/processor.
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config FORCE_MAX_ZONEORDER
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int "Maximum zone order"
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default "13"
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help
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The kernel memory allocator divides physically contiguous memory
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blocks into "zones", where each zone is a power of two number of
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pages. This option selects the largest power of two that the kernel
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keeps in the memory allocator. If you need to allocate very large
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blocks of physically contiguous memory, then you may need to
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increase this value.
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This config option is actually maximum order plus one. For example,
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a value of 11 means that the largest free memory block is 2^10 pages.
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menu "Processor type and features"
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source "arch/c6x/platforms/Kconfig"
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config KERNEL_RAM_BASE_ADDRESS
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hex "Virtual address of memory base"
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default 0xe0000000 if SOC_TMS320C6455
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default 0xe0000000 if SOC_TMS320C6457
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default 0xe0000000 if SOC_TMS320C6472
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default 0x80000000
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source "kernel/Kconfig.hz"
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endmenu
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