suse man page for utrace_control_pid

UTRACE_CONTROL_PID(9)						  utrace core API					     UTRACE_CONTROL_PID(9)

NAME
       utrace_control_pid - control a thread being traced by a tracing engine

SYNOPSIS
       __must_check int utrace_control_pid(struct pid * pid, struct utrace_engine * engine, enum utrace_resume_action action);

ARGUMENTS
       pid
	   thread to affect

       engine
	   attached engine to affect

       action

	   enum utrace_resume_action for thread to do

DESCRIPTION
       This is the same as utrace_control, but takes a struct pid pointer rather than a struct task_struct pointer. The caller must hold a ref on
       pid, but does not need to worry about the task staying valid. If it's been reaped so that pid points nowhere, then this call returns
       -ESRCH.

Kernel Hackers Manual 2.6.					     July 2010						     UTRACE_CONTROL_PID(9)