By modifying the kernel of ARMLinux,we made ARM capable of getting the high speed data from its external device FPGA by the FIQ. Then a user process can get the data from the system space and computing processing data.
并通过修订内核,实现了利用FIQ机制高速获取外部设备数据,用户进程通过访问系统空间获取实验数据并进行运算处理。
参考来源 - 基于嵌入式ARM·2,447,543篇论文数据，部分数据来源于NoteExpress
Segment fifteen (0xe) is available for user process.
第15段(0xe)供用户进程使用。
Set the user process limits to unlimited by running this command as the root user
通过以 root 用户身份运行以下命令，从而将用户进程限制设置为无限制
Finally, I return the number of characters actually written into the cookie_pot that is propagated to the user process.
最后，返回实际写入cookie _ pot的字符的个数，它会返回到用户进程。
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