perf probe: Do not use dwfl_module_addrsym if dwarf_diename finds symbol name

Do not use dwfl_module_addrsym if dwarf_diename can find the symbol
name, since dwfl_module_addrsym can be failed on shared libraries.

Without this patch
  ----
  $ perf probe -x ../lib/traceevent/libtraceevent.so -V create_arg_op
  Failed to find symbol at 0x11df1
  Failed to find the address of create_arg_op
    Error: Failed to show vars.
  ----
With this patch
  ----
  $ perf probe -x ../lib/traceevent/libtraceevent.so -V create_arg_op
  Available variables at create_arg_op
          @<create_arg_op+0>
                  enum filter_op_type     btype
                  struct filter_arg*      arg
  ----

This bug was reported on [email protected].

Reported-by: david lerner <[email protected]>
Signed-off-by: Masami Hiramatsu <[email protected]>
Cc: david lerner <[email protected]>
Cc: [email protected]
Cc: [email protected]
Link: http://permalink.gmane.org/gmane.linux.kernel.perf.user/1691
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>

0 files changed, 0 insertions, 0 deletions