title: Linked List of Running Processes in Kernel 3.*
body: <p>I want to know next and previous processes of every process,that it's state is "TASK_RUNNING".
  In older kernels there is a run_list struct as a member of task_struct. How can I do something like this in kernel 3 ? For example tracing  a list of running processes, but I don't know which struct is defined as such list in kernel 3.</p>