suse man page for arch_has_single_step

ARCH_HAS_SINGLE_STEP(9) 					 Kernel Internals					   ARCH_HAS_SINGLE_STEP(9)

NAME
       arch_has_single_step - does this CPU support user-mode single-step?

SYNOPSIS
       arch_has_single_step(void);

ARGUMENTS
       None

DESCRIPTION
       If this is defined, then there must be function declarations or inlines for user_enable_single_step and user_disable_single_step.
       arch_has_single_step should evaluate to nonzero iff the machine supports instruction single-step for user mode. It can be a constant or it
       can test a CPU feature bit.

Kernel Hackers Manual 2.6.					     July 2010						   ARCH_HAS_SINGLE_STEP(9)