OrgZephyr/zephyr
OrgZephyr
/
zephyr
mirror of https://github.com/zephyrproject-rtos/zephyr.git
1
0
Fork 0
Code Issues Releases Wiki Activity
zephyr/lib/os/Kconfig

91 lines
2.6 KiB
Plaintext
Raw Normal View History

lib: flatten all loose components into one lib lib/ was starting to get messy and inconsitent. Files being either dumped in the root or in sub-directories without a clear plan. Move all library components into one single folder and call it 'os'. Signed-off-by: Anas Nashif <anas.nashif@intel.com>
2019-01-19 19:57:38 +08:00
# 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
kernel/printk: Make it synchronous Currently printk isn't synchronized except at the byte output level, leading to interleaving of messages on SMP systems that try to log simultaneously. This is actually fairly amusing, and actually helpful occasionally to validate inter-CPU contention down to the "few cycles" level. Still, when you're printing data you need to read, you need to be able to read it. Put a spinlock around each buffered line. This has to happen in a few places, as there are three different code paths taken for !USERSPACE, syscall, and user mode. Signed-off-by: Andy Ross <andrew.j.ross@intel.com>
2020-06-03 06:07:28 +08:00
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.
lib: os: Add mpsc (multiple producer, single consumer) packet buffer Added module for storing variable length packets in a ring buffer. Implementation assumes multiple producing contexts and single consumer. API provides zero copy functionality with alloc, commit, claim, free scheme. Additionally, there are functions optimized for storing single word packets and packets consisting of a word and a pointer. Buffer can work in two modes: saturation or overwriting the oldest packets when buffer has no space to allocate for a new buffer. Signed-off-by: Krzysztof Chruscinski <krzysztof.chruscinski@nordicsemi.no>
2021-01-14 14:59:52 +08:00
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.
lib/os: Add sys_winstream lockless shared memory byte stream IPC It's not uncommon to have Zephyr running in environments where it shares a memory bus with a foreign/non-Zephyr system (both the older Intel Quark and cAVS audio DSP systems share this property). In those circumstances, it would be nice to have a utility that allows an arbitrary-sized chunk of that memory to be used as a unidirectional buffered byte stream without requiring complicated driver support. sys_winstream is one such abstraction. This code is lockless, it makes no synchronization demands of the OS or hardware beyond memory ordering[1]. It implements a simple file/socket-style read/write API. It produces small code and is high performance (e.g. a read or write on Xtensa is about 60 cycles plus one per byte copied). It's bidirectional, with no internal Zephyr dependencies (allowing it to be easily ported to the foreign system). And it's quite a bit simpler (especially for the reader) than the older cAVS trace protocol it's designed to replace. [1] Which means that right now it won't work reliably on arm64 until we add a memory barrier framework to Zephyr! See notes in the code; the locations for the barriers are present, but there's no utility to call. Signed-off-by: Andy Ross <andrew.j.ross@intel.com>
2021-12-31 11:29:49 +08:00
config SHARED_MULTI_HEAP
bool "Shared multi-heap manager"
help
Enable support for a shared multi-heap manager that uses the
multi-heap allocator to manage a set of reserved memory regions with
different capabilities / attributes (cacheable, non-cacheable,
etc...) defined in the DT.
config WINSTREAM
bool "Lockless shared memory window byte stream"
help
Winstream is a byte stream IPC for use in shared memory
"windows", generally for transmit to non-Zephyr contexts that
can't share Zephyr APIs or data structures.
if WINSTREAM
config WINSTREAM_STDLIB_MEMCOPY
bool "Use standard memcpy() in winstream"
help
The sys_winstream utility is sometimes used in early boot
environments before the standard library is usable. By
default it uses a simple internal bytewise memcpy(). Set
this to use the one from the standard library.
endif
lib: os: mpsc_pbuf: Add optional debug features Added optional debug prints. Logging cannot be used because mpsc pbuf is used by the logging. Added option to clear packet memory after allocation. Option is enabled in Kconfig. Signed-off-by: Krzysztof Chruscinski <krzysztof.chruscinski@nordicsemi.no>
2021-03-19 15:30:29 +08:00
if MPSC_PBUF
config MPSC_CLEAR_ALLOCATED
bool "Clear allocated packet"
help
When enabled packet space is zeroed before returning from allocation.
endif
power: move reboot functionality to os lib Reboot functionality has nothing to do with PM, so move it out to the subsys/os folder. Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>
2021-04-27 17:56:39 +08:00
config REBOOT
bool "Reboot functionality"
help
Enable the sys_reboot() API. Enabling this can drag in other subsystems
drivers: timer: improve sys_timer_disable usage - Remove the weak symbol definition - Notify about the capability of disabling via a selected Kconfig option (CONFIG_SYSTEM_TIMER_HAS_DISABLE_SUPPORT) - Provide a dummy inline function when the functionality is not available Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>
2021-11-04 21:26:19 +08:00
needed to perform a "safe" reboot (e.g. to stop the system clock before
issuing a reset).
power: move reboot functionality to os lib Reboot functionality has nothing to do with PM, so move it out to the subsys/os folder. Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>
2021-04-27 17:56:39 +08:00
zephyr: Add UTF8 kconfig to conditionally compile utf8.c Add the kconfig option so that the utf8.c file can be conditionally compile, and only for the applications that need it. Signed-off-by: Emil Gydesen <emil.gydesen@nordicsemi.no>
2022-01-07 17:58:07 +08:00
config UTF8
bool "UTF-8 string operation supported"
help
Enable the utf8 API. The API implements functions to specifically
handle UTF-8 encoded strings.
lib: add cbprintf capability This commit adds a C99 stdio value formatter capability where generated text is emitted through a callback. This allows generation of arbitrarily long output without a buffer, functionality that is core to printk, logging, and other system and application needs. The formatter supports most C99 specifications, excluding: * %Lf long double conversion * wide character output Kconfig options allow disabling features like floating-point conversion if they are not necessary. By default most conversions are enabled. The original z_vprintk() implementation is adapted to meet the interface requirements of cbvprintf, and made available as an opt-in feature for space-constrained applications that do not need full formatting support. Signed-off-by: Peter Bigot <peter.bigot@nordicsemi.no>
2020-11-08 20:24:22 +08:00
rsource "Kconfig.cbprintf"
lib: os: group heap related kconfigs under a menu This groups the heap related kconfigs under a menu so they are under a group (!). Signed-off-by: Daniel Leung <daniel.leung@intel.com>
2021-12-02 03:17:49 +08:00
rsource "Kconfig.heap"
lib: flatten all loose components into one lib lib/ was starting to get messy and inconsitent. Files being either dumped in the root or in sub-directories without a clear plan. Move all library components into one single folder and call it 'os'. Signed-off-by: Anas Nashif <anas.nashif@intel.com>
2019-01-19 19:57:38 +08:00
endmenu