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update CosyOS-III 版本更新记录.md.

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Signed-off-by: 零中断延迟的RTOS <cosyos@139.com>
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零中断延迟的RTOS
2026-01-20 11:43:45 +00:00
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CosyOS-III 版本更新记录.md
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* 本次调整仅涉及 port_cmx.h、port_cmx.c、port_cmx_s.c 三个文件。
* 更新日期：2026.01.19
### V2.2.3
* ARM“互斥访问机制”，得以进一步性能优化，已达历史最高水平，无法再精进。
在“互斥访问__LOOP”未被打断的情形下，“互斥访问机制”仅比“互斥访问指令”多执行8条指令，性能已经十分可观，完全具有实用价值。
* 更新日期：2026.01.20