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Jukka Laitinen b2315e98c4 sched/semaphore: Always free mutex holder at nxsem_post
There is no need to check the holder structure "counts". There are cases
where the counts may be greater than 1 when several tasks block
on the mutex, but there is always just one holder, which must be freed.

Signed-off-by: Jukka Laitinen <jukka.laitinen@tii.ae>
2025-05-23 01:39:53 +08:00
.github ci: enable spelling checks (via codespell) 2025-05-05 12:34:39 +08:00
arch arch/stm32h5: Fix FLASH bank logic during erase operations. 2025-05-22 09:47:15 +08:00
audio audio/composite: merge composite instance allocate to one times 2025-03-17 10:26:54 +01:00
binfmt libc/elf: rename modlib to libelf 2025-04-11 09:43:22 +08:00
boards boards/sama5d3-xplained: Add knsh configuration 2025-05-20 09:16:27 -03:00
cmake tools: Update Unix.mk and savedefconfig.cmake for CONFIG_ARCH_BOARD_COMMON 2025-05-02 09:30:34 -03:00
crypto crypto/xform.c: migrate to SPDX identifier 2024-12-19 14:48:18 +08:00
Documentation Documentation/beaglebone-black: Remove readme txt file. 2025-05-21 10:02:45 +02:00
drivers drivers/ctucanfd_pci.c: fix frame reception 2025-05-21 21:10:17 -03:00
dummy
fs fs/vfs/fs_dup.c: before file_allocate should restore minfd if define FDCHECK 2025-05-15 16:51:40 -03:00
graphics comments: update text typo pre-empted to preempted 2025-05-12 15:01:37 +08:00
include sensors: add support for BME688 sensor 2025-05-17 12:16:54 +08:00
libs fix misspelled names in locally scoped code 2025-05-15 10:12:12 +08:00
mm fix misspelled names in locally scoped code 2025-05-15 10:12:12 +08:00
net fix misspelled names in locally scoped code 2025-05-15 10:12:12 +08:00
openamp Remove all jira and changeid information from the kernel 2024-11-06 02:04:03 +08:00
pass1 Revert "build depend:Revert Make.dep intermediate ddc file" 2024-09-15 19:29:47 +08:00
sched sched/semaphore: Always free mutex holder at nxsem_post 2025-05-23 01:39:53 +08:00
syscall sched/gettid: Move thread ID to TLS 2025-04-08 22:53:10 +08:00
tools tools/Config.mk: add -DHAVE_STRNDUP=1 2025-05-20 08:29:05 +08:00
video Revert "build depend:Revert Make.dep intermediate ddc file" 2024-09-15 19:29:47 +08:00
wireless wireless/ieee802154: Replace direct access to semaphore value with nxsem_get_value 2025-04-17 20:13:40 +08:00
.asf.yaml github: master branch protection tune. 2025-05-07 18:37:13 -05:00
.codespell-ignore-lines Documentation: fix spelling 2025-05-15 11:33:41 +08:00
.codespellrc .codespellrc: ignore IST 2025-05-17 12:16:54 +08:00
.gitignore gitignore: add Emacs auto-save files 2025-01-15 16:10:22 +08:00
.pre-commit-config.yaml pre-commit: enable codespell checks 2025-05-05 12:34:39 +08:00
.yamllint
AUTHORS AUTHORS: add Yamamoto Takashi 2024-11-04 22:29:22 +08:00
CMakeLists.txt Documentation: fix typo in comments 2025-04-11 22:31:30 +08:00
CONTRIBUTING.md 202503 Apache NuttX RTOS Contributing Guidelines update. 2025-03-17 08:30:37 -03:00
INVIOLABLES.md
Kconfig libc/elf: rename modlib to libelf 2025-04-11 09:43:22 +08:00
LICENSE libc string:Separate code. 2024-10-23 09:49:19 +08:00
Makefile tools: migrate to SPDX identifier 2024-09-10 23:11:11 +08:00
NOTICE
README.md
ReleaseNotes

POSIX Badge License Issues Tracking Badge Contributors GitHub Build Badge Documentation Badge

Apache NuttX is a real-time operating system (RTOS) with an emphasis on standards compliance and small footprint. Scalable from 8-bit to 64-bit microcontroller environments, the primary governing standards in NuttX are POSIX and ANSI standards. Additional standard APIs from Unix and other common RTOSs (such as VxWorks) are adopted for functionality not available under these standards, or for functionality that is not appropriate for deeply-embedded environments (such as fork()).

For brevity, many parts of the documentation will refer to Apache NuttX as simply NuttX.

Getting Started

First time on NuttX? Read the Getting Started guide! If you don't have a board available, NuttX has its own simulator that you can run on terminal.

Documentation

You can find the current NuttX documentation on the Documentation Page.

Alternatively, you can build the documentation yourself by following the Documentation Build Instructions.

The old NuttX documentation is still available in the Apache wiki.

Supported Boards

NuttX supports a wide variety of platforms. See the full list on the Supported Platforms page.

Contributing

If you wish to contribute to the NuttX project, read the Contributing guidelines for information on Git usage, coding standard, workflow and the NuttX principles.

License

The code in this repository is under either the Apache 2 license, or a license compatible with the Apache 2 license. See the License Page for more information.