Does RSS Include Kernel Space Memory?

Question

I am writing a simple memory profiler by reading the VmRSS value of /proc/[pid]/status. My question is that does a process' RSS include kernel space memory? Thank you!

Answer 1

No, if you read the code in task_mmu.c you'll see that it's strictly pages allocated to the process. Kernel space memory usage doesn't really have a quantifiable value at process scope. Any memory increase in the kernel after a process starts execution should be negligible though.

Answer 2

AFAIK RSS告诉给定进程占用了多少用户空间内存。