diff options
author | Ravi Bangoria <ravi.bangoria@linux.vnet.ibm.com> | 2016-11-22 14:55:59 +0530 |
---|---|---|
committer | Sasha Levin <alexander.levin@verizon.com> | 2017-05-17 15:06:58 -0400 |
commit | 9aabd8dbacd82a2cd62da83b4e9e1504b53706ee (patch) | |
tree | 36b96a4ea62c997be8ad0ced3e1c6e88508c8353 /drivers/net | |
parent | c2fd678ea234c68df8628bfe76b2540616c82fd2 (diff) |
powerpc/xmon: Fix data-breakpoint
[ Upstream commit c21a493a2b44650707d06741601894329486f2ad ]
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.
Cc: stable@vger.kernel.org
Signed-off-by: Ravi Bangoria <ravi.bangoria@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Diffstat (limited to 'drivers/net')
0 files changed, 0 insertions, 0 deletions