Edit File: hw_watch_addr.meta
title: Watch a Kernel Address Using Breakpoint Hardware name: hw_watch_addr.stp version: 1.0 author: William Cohen keywords: memory watchpoint subsystem: memory status: production exit: user-controlled output: trace scope: system-wide description: The script will watch accesses to a single kernel address and prints a traceback each time the address is accessed. This script needs to be run as root to allow access to the breakpoint hardware. test_support: perf stat -a --event=mem:0x`grep "vm_dirty_ratio" /proc/kallsyms | awk '{print $1}'` /bin/true test_check: stap --all-modules -p4 hw_watch_addr.stp 0x`grep "vm_dirty_ratio" /proc/kallsyms | awk '{print $1}'` test_installcheck: stap --all-modules hw_watch_addr.stp 0x`grep "vm_dirty_ratio" /proc/kallsyms | awk '{print $1}'` -T 5