diff options
| author | Ravi Bangoria <ravi.bangoria@linux.vnet.ibm.com> | 2016-11-22 14:55:59 +0530 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-03-12 06:37:31 +0100 |
| commit | 15959b728d07c178c3ed1074daee1c4663e7c601 (patch) | |
| tree | 75d39cbb121837fcda97ad85f0f2052333d95267 /include/linux/flat.h | |
| parent | afee78f03ee6fbd5f1c023c3205fb86d8b742809 (diff) | |
powerpc/xmon: Fix data-breakpoint
commit c21a493a2b44650707d06741601894329486f2ad upstream.
Currently 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.
Signed-off-by: Ravi Bangoria <ravi.bangoria@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux/flat.h')
0 files changed, 0 insertions, 0 deletions