July 16, 2013
2:44 p.m.
On Tue, 16 Jul 2013 12:42:37 +0530, Satya Prakash Prasad said:
I am not sure how to practice the code snippet given in the text book. I can understand the theory but do not find a way to practice. For example: I want to read a process 'struct task_struct' to find it parent's process identifier, how many tasks are in which state, creating kernel threads etc?
cd /usr/src/linux find include -type f | xargs grep 'struct task_struct' | more Lots of hits. One of those is the definition of the structure. Study it and learn from that. The rest are where other things refer to the structure - much can be learned from studying what *else* refers to it and why. Enjoy.