Adds support for unwinding user stack dump by linking with libunwind.
Signed-off-by: NChandan Kumar <chandan.kumar@linux.vnet.ibm.com>
Reviewed-by: NNaveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Tested-by: NNaveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Acked-by: NArnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>