zhangyuan29 befe29801f sem: change sem wait to atomic operation ...

Add sem_wait fast operations, use atomic to ensure
atomicity of semcount operations, and do not depend
on critical section.

Test with robot:
before modify:
nxmutex_lock cost: 78 ns
nxmutex_unlock cost: 82 ns

after modify:
nxmutex_lock cost: 28 ns
nxmutex_unlock cost: 14 ns

Signed-off-by: zhangyuan29 <zhangyuan29@xiaomi.com>

2024-10-30 01:38:45 +08:00

..

addrenv

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clock

cmake:refine nuttx cmake build system fix CMake build missing part

2024-10-13 02:25:06 +08:00

environ

sched/environ: There is no need to use sched_[un]lock

2024-10-11 02:43:11 +08:00

event

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group

Revert "sched/group/setuptask_file: duplicate idle task fd for kernel thread"

2024-10-11 16:53:19 +08:00

init

sched: add up_this_task and up_change_task macro stub

2024-10-15 15:25:55 +08:00

instrument

sched/instrument: rename stack_record.c to stack_monitor.c

2024-10-13 02:10:41 +08:00

irq

Revert "sched/spinlock: remove nesting spinlock support"

2024-10-14 17:42:16 +08:00

misc

coredump: coredump_add_memory_region need use flags

2024-10-24 08:46:01 +08:00

module

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mqueue

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paging

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pthread

sched/pthread: Remove unused pthread_sem_xxx functions

2024-10-13 02:47:44 +08:00

sched

sched/cpuload: move g_cpuload_wdog to private chapter

2024-10-25 13:28:51 +08:00

semaphore

sem: change sem wait to atomic operation

2024-10-30 01:38:45 +08:00

signal

sched: Use spinlock repalce sched_[un]lock in some place

2024-10-16 13:53:51 +08:00

task

task_exit.c: Add missing sched_note_stop()

2024-10-23 12:08:18 -03:00

timer

sched/timer: Simplify setitimer implementation.

2024-10-18 23:58:07 +08:00

tls

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wdog

sched/wdog: Fix code style

2024-10-10 13:57:46 +08:00

wqueue

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CMakeLists.txt

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Kconfig

libc/modlib: Make modlib selectable from defconfig

2024-10-16 10:11:20 +08:00

Makefile

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