add Linux kernel coding style as the fall back for subjects that are not covered in our guideline
@@ -105,6 +105,10 @@ For example, a file called `test.h` should have:
#endif // TEST_H
```
+Don't use `pragam once` which is not supported by all C/C++ compilers
+
+## MISC
+For subjects that are not coverred here, we follow [Linux kernel coding style](https://www.kernel.org/doc/html/v4.10/process/coding-style.html#linux-kernel-coding-style)
## Commit and Merge
To avoid creating redundant merge commits the following methods are recommanded:
