user_enable_single_step(9) suse man page | unix.com

USER_ENABLE_SINGLE_S(9) 					 Kernel Internals					   USER_ENABLE_SINGLE_S(9)

NAME
       user_enable_single_step - single-step in user-mode task

SYNOPSIS
       void user_enable_single_step(struct task_struct * task);

ARGUMENTS
       task
	   either current or a task stopped in TASK_TRACED

DESCRIPTION
       This can only be called when arch_has_single_step has returned nonzero. Set task so that when it returns to user mode, it will trap after
       the next single instruction executes. If arch_has_block_step is defined, this must clear the effects of user_enable_block_step too.

Kernel Hackers Manual 2.6.					     July 2010						   USER_ENABLE_SINGLE_S(9)