Re: powerpc/xmon: Fix data-breakpoint

On Tue, 2016-11-22 at 09:25:59 UTC, Ravi Bangoria wrote:

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.

Signed-off-by: Ravi Bangoria <redacted>

Applied to powerpc next, thanks.

https://git.kernel.org/powerpc/c/c21a493a2b44650707d06741601894

cheers