CONFIG_HAVE_REGS_AND_STACK_ACCESS_API (not configurable)

configname: CONFIG_HAVE_REGS_AND_STACK_ACCESS_API

Linux Kernel Configuration
└─>HAVE_REGS_AND_STACK_ACCESS_API
In linux kernel since version 2.6.34 (release Date: 2010-05-16)  
This symbol should be selected by an architecure if it supports
the API needed to access registers and stack entries from pt_regs,
declared in asm/ptrace.h
For example the kprobes-based event tracer needs this API.

is selected by
CONFIG_KPROBE_EVENTS