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- # Copyright (c) 2016 Intel Corporation
- # SPDX-License-Identifier: Apache-2.0
- menu "OS Support Library"
- config JSON_LIBRARY
- bool "Build JSON library"
- help
- Build a minimal JSON parsing/encoding library. Used by sample
- applications such as the NATS client.
- config RING_BUFFER
- bool "Enable ring buffers"
- help
- Enable usage of ring buffers. This is similar to kernel FIFOs but ring
- buffers manage their own buffer memory and can store arbitrary data.
- For optimal performance, use buffer sizes that are a power of 2.
- config BASE64
- bool "Enable base64 encoding and decoding"
- help
- Enable base64 encoding and decoding functionality
- config SYS_HEAP_VALIDATE
- bool "Enable internal heap validity checking"
- help
- The sys_heap implementation is instrumented for extensive
- internal validation. Leave this off by default, unless
- modifying the heap code or (maybe) when running in
- environments that require sensitive detection of memory
- corruption.
- config SYS_HEAP_ALLOC_LOOPS
- int "Number of tries in the inner heap allocation loop"
- default 3
- help
- The sys_heap allocator bounds the number of tries from the
- smallest chunk level (the one that might not fit the
- requested allocation) to maintain constant time performance.
- Setting this to a high level will cause the heap to return
- more successful allocations in situations of high
- fragmentation, at the cost of potentially significant
- (linear time) searching of the free list. The default is
- three, which results in an allocator with good statistical
- properties ("most" allocations that fit will succeed) but
- keeps the maximum runtime at a tight bound so that the heap
- is useful in locked or ISR contexts.
- config PRINTK_SYNC
- bool "Serialize printk() calls"
- default y if SMP && MP_NUM_CPUS > 1
- help
- When true, a spinlock will be taken around the output from a
- single printk() call, preventing the output data from
- interleaving with concurrent usage from another CPU or an
- preempting interrupt.
- config MPSC_PBUF
- bool "Multi producer, single consumer packet buffer"
- select TIMEOUT_64BIT
- help
- Enable usage of mpsc packet buffer. Packet buffer is capable of
- storing variable length packets in a circular way and operate directly
- on the buffer memory.
- if MPSC_PBUF
- config MPSC_CLEAR_ALLOCATED
- bool "Clear allocated packet"
- help
- When enabled packet space is zeroed before returning from allocation.
- endif
- config REBOOT
- bool "Reboot functionality"
- select SYSTEM_CLOCK_DISABLE
- help
- Enable the sys_reboot() API. Enabling this can drag in other subsystems
- needed to perform a "safe" reboot (e.g. SYSTEM_CLOCK_DISABLE, to stop the
- system clock before issuing a reset).
- rsource "Kconfig.cbprintf"
- endmenu
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