Could anyone point out how I can calculate the cpu usage of a specific process in percentage terms? The code is a kernel module so I am looking for a better way than to parse data from /proc or to use a system call. I was wondering if I could calculate it using a combination of task_struct and linux kernel functions.
calculate cpu usage of a process as percentage in kernel space
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task_struct have user time (utime), system time (stime), start_time and ..., here is the algorithm in https://stackoverflow.com/a/16736599/4490542