Apache NuttX is a mature, real-time embedded operating system (RTOS) https://nuttx.apache.org/
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dongjiuzhu1 afaaa7b8cb include/notifier: fix undefined reference to spin_lock_irqsave_nopreempt
Fix linker error caused by including spinlock_type.h instead of
spinlock.h in notifier.h header file.

Error message:
  undefined reference to 'spin_lock_irqsave_nopreempt'
  in .text.clock_changed_notifier_call_chain

Root cause:
The notifier.h header was including <nuttx/spinlock_type.h> which only
provides type definitions, but the inline functions in notifier.h use
spinlock functions like spin_lock_irqsave_nopreempt(). These functions
are defined in <nuttx/spinlock.h>, not in spinlock_type.h.

Solution:
Change the include from <nuttx/spinlock_type.h> to <nuttx/spinlock.h>
to get both the type definitions and the function implementations.

This fixes the undefined reference error when using notifier chains
with spinlock protection.

Signed-off-by: dongjiuzhu1 <dongjiuzhu1@xiaomi.com>
2026-01-28 23:37:32 +08:00
.github sched: Remove legacy sched_resumescheduler.c 2026-01-27 18:21:12 +08:00
arch arch/arm: GPIO IMX9 Add support for IRQ line1 and GPIO5 2026-01-28 21:13:31 +08:00
audio fs/file: unify prefix about file_xxx api, like file_open, file_ioctl 2025-06-12 18:12:42 +08:00
binfmt sched/task: move kernel stack allocation to task initialization 2026-01-18 23:05:11 +08:00
boards boards/sim and qemuv7a: enable SCHED_EVENTS for boards used rpmsg port uart 2026-01-28 19:23:41 +08:00
cmake cmake(bugfix):change default compile obj extension to .o 2026-01-27 20:54:26 +08:00
crypto crypto/keymgmt: return actual length if key exported successfully 2026-01-28 11:52:12 +08:00
Documentation Documentation/rpmsg: add RPMsg Port UART transport documentation 2026-01-28 19:23:41 +08:00
drivers drivers/serial: fix crash when buffer is full and only recvbuf is implemented 2026-01-28 22:19:21 +08:00
dummy build: add initial cmake build system 2023-07-08 13:50:48 +08:00
fs fs/event/open: fix the inode information update outside of lock 2026-01-28 10:03:06 +08:00
graphics graphics/nxterm: Use small lock to protect resource in graphics. 2026-01-27 17:59:07 +08:00
include include/notifier: fix undefined reference to spin_lock_irqsave_nopreempt 2026-01-28 23:37:32 +08:00
libs libstdc++: Relocate c++config.h from include/ to libstdc++ to preserve upstream integrity 2026-01-27 10:35:58 +08:00
mm mm/tlfs: Account initial size of struct mm_heap_s 2026-01-27 21:27:53 +08:00
net Revert "net: limit TCP and UDP send/recv buffer usage with throttled IOB" 2026-01-23 14:40:06 -03:00
openamp openamp: optimize virtqueue_notification() called condition 2026-01-19 14:18:27 +08:00
pass1 Revert "build depend:Revert Make.dep intermediate ddc file" 2024-09-15 19:29:47 +08:00
sched sched_profil.c: misra_c_2012_rule_8_9_violation 2026-01-28 22:01:45 +08:00
syscall syscall: add sched_note_event_ip syscall for instrumentation dump 2026-01-28 02:06:23 +08:00
tools tools/parsetrace.py: Fix get_typesize bug in parsetrace.py 2026-01-26 23:22:41 +01:00
video Revert "build depend:Revert Make.dep intermediate ddc file" 2024-09-15 19:29:47 +08:00
wireless net/wireless: fix compile warning 2025-12-25 18:05:33 +08:00
.asf.yaml github: master branch protection tune. 2025-05-07 18:37:13 -05:00
.codespell-ignore-lines net/icmpv6: replace net_lock with conn_lock and conn_lock_dev 2025-12-29 09:42:18 +08:00
.codespellrc codespellrc: add ist to ignorelist 2025-10-14 17:42:01 +08:00
.editorconfig .editorconfig: fix character encoding property specification 2025-11-28 19:12:13 +08:00
.gitignore gitignore: add more vim swap files 2025-06-18 15:44:51 -04:00
.gitmessage docs/contributing: Add a commit message template 2025-06-03 17:33:24 +08:00
.pre-commit-config.yaml pre-commit: enable codespell checks 2025-05-05 12:34:39 +08:00
.yamllint feat: add a GitHub action to lint the YAML files 2020-12-15 09:52:04 -06:00
AUTHORS AUTHORS: add Michal Lenc 2025-12-03 08:46:33 -03:00
CMakeLists.txt cmake(bugfix):change default compile obj extension to .o 2026-01-27 20:54:26 +08:00
CONTRIBUTING.md style: fix spelling in code comments and strings 2025-05-23 10:48:41 +08:00
INVIOLABLES.md
Kconfig Kconfig: Add ALLOW_CUSTOM_PERMISSIVE_COMPONENTS option 2026-01-20 02:15:19 +08:00
LICENSE style: fix spelling in code comments and strings 2025-05-23 10:48:41 +08:00
Makefile tools: migrate to SPDX identifier 2024-09-10 23:11:11 +08:00
NOTICE Remove the double blank line from source files 2022-02-20 20:10:14 +01:00
README.md Gathering community recommendations 2023-10-28 13:55:56 +08:00
ReleaseNotes Documentation: move ReleaseNotes 2023-09-26 20:41:00 +08:00

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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.