What is the U Area equivalent data structure in Linux?

Question

We have U Area in UNIX which holds the information related to a process. What is the data structure analogous to U Area, in Linux?

Also, is it possible to view the contents held by U Area in UNIX ( and Linux also )?

Answer 1

In Linux, the contents of the U area are stored in a task_struct with the rest of the process information.

To my knowledge, it can only be accessed through the proc filesystem.