doxygen: fix build error #10599
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doxygen: fix build error #10599
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fixed: b084503 "[kernel] add UP scheduler critical switch flag." After this commit, doxygen build with warning: include/rtthread.h:658: warning: argument 'lock' from the argument list of rt_spin_unlock has multiple @param documentation sections include/rtthread.h:660: warning: argument 'lock' from the argument list of rt_spin_unlock_irqrestore has multiple @param documentation sections include/rtthread.h:660: warning: argument 'level' from the argument list of rt_spin_unlock_irqrestore has multiple @param documentation sections Rootcasue analysis: src/cpu_up.c and src/cpu_mp.c define two identical functions. Because the INPUT parameter in the documentation/Doxyfile currently compiles all source files under ./src, i.e both of them, Doxygen automatically merges the Doxygen comments for identically named functions if it finds the content of doxygen comments different, resulting in multiple @param. Previously, the API comments in both files were identical, so there was no problem. However, the b084503 change only modified the comments in src/cpu_up.c but not in src/cpu_mp.c, causing problems. Another drawback of the b084503 change is that Doxygen recommends a single line for the @brief; multiple lines are not recommended. Solution: Given the requirement for a single line for the @brief, this issue is relatively simple to resolve: simply list the extra content as @note. Regarding the warning: A perfect solution has not yet been found. One possible approach is to write a single Doxygen comment for a kernel API with two implementations. This approach involves writing Doxygen comments in only one file, such as src/cpu_up.c , while omitting them in src/cpu_mp.c . Another solution is to add API comments to include/rtthread.h , but the RT-Thread include/rtthread.h file is already quite large, and adding comments there would be even more cumbersome. A temporary solution currently in use is to ensure that the Doxygen comments for the same API are identical in both src/cpu_up.c and src/cpu_mp.c . This ensures that Doxygen compilation does not generate warnings, and the files are automatically merged into a single file in the HTML document. Signed-off-by: Chen Wang <[email protected]>
📌 Code Review Assignment🏷️ Tag: kernelReviewers: @GorrayLi @ReviewSun @hamburger-os @lianux-mm @wdfk-prog @xu18838022837 Changed Files (Click to expand)
📊 Current Review Status (Last Updated: 2025-08-11 22:17 CST)
📝 Review Instructions
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meng-plus
approved these changes
Aug 11, 2025
Rbb666
approved these changes
Aug 12, 2025
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导致问题的 commit：b084503b6d "[kernel] add UP scheduler critical switch flag."
这个提交会导致 doxygen build 产生告警，导致失败：
原因分析：
src/cpu_up.c和src/cpu_mp.c定义了两套完全相同的函数，因为目前documentation/Doxyfile中的 INPUT 参数会将./src下的文件全部加入编译，这导致src/cpu_up.c和src/cpu_mp.c都会参与 doxygen 的编译，Doxygen 在处理它们的过程中如果发现这同名函数的 doxygen 注释不同的话会自动进行合并操作，导致形成多个 param 的告警。以前这两个文件中的 API 注释都是相同的，目前看上去如果注释相同，doxygen 在编译时的合并不会有问题，所以一直以来没有问题，但 b084503 的修改在修改注释时只改了
src/cpu_up.c中的rt_spin_unlock和rt_spin_unlock_irqrestore的注释，但没有改src/cpu_mp.c中对应函数的注释，从而导致问题。另外 b084503 中的修改还有一个不好的地方在于 Doxygen 的
@brief建议只写一行的，多行不是建议的写法。解决方案：
针对
@brief只写一行的要求，这个问题解决比较简单，将多加的内容作为@note列出即可。对于 warning 的解决：比较完美的解决方案暂时没有想好。一种可行的做法就是如果内核中这种一套 API 两套实现的情况，原则上 API 的 doxygen 注释应该只写一份就好了。所以一种可行的做法是只在一个文件，譬如
src/cpu_up.c中写 doxygen 注释，而另一个文件src/cpu_mp.c中的 doxygen 注释不写。还有一种解决方案是将 API 的注释写到
include/rtthread.h中去(只有一份)，但是目前include/rtthread.h这个文件本身已经很大了，如果再将注释加进去会更难看。最终我采用的是临时的解决方案，就是确保同一个 API 的 doxygen 注释在
src/cpu_up.c和src/cpu_mp.c中一样(这也是以前的做法)。这样 doxygen 编译不会有告警，而且其自动合并后只有一份在 html 中。更好的解决方案以后再考虑吧。