Ravi Bangoria <ravi.bango...@linux.vnet.ibm.com> writes: > Xmon data-breakpoint feature is broken. > > Whenever there is a watchpoint match occurs, hw_breakpoint_handler will > be called by do_break via notifier chains mechanism. If watchpoint is > registered by xmon, hw_breakpoint_handler won't find any associated > perf_event and returns immediately with NOTIFY_STOP. Similarly, do_break > also returns without notifying to xmon. > > Solve this by returning NOTIFY_DONE when hw_breakpoint_handler does not > find any perf_event associated with matched watchpoint.
.. rather than NOTIFY_STOP, which tells the core code to continue calling the other breakpoint handlers including the xmon one. Right? Also any idea when we broke this? cheers
