• Arnaldo Carvalho de Melo's avatar
    perf tools: Fix dso__new handle() to handle deleted DSOs · 1340e6bb
    Arnaldo Carvalho de Melo authored
    It is better than showing the map addr, this way at least we
    know that we can't get the symtabs because the DSO was deleted
    (system update) while an app still used such DSO.
    
    Yeah, don't do that, but if you do, you'll figure it out
    quicker this way.
    
    [acme@doppio linux-2.6-tip]$ perf report | head -15
     # Samples: 3796
     #
     # Overhead  Command                                                        Shared Object  Symbol
     # ........  .......  ...................................................................  ......
     #
        23.55%   pidgin  /lib64/libglib-2.0.so.0.2000.4.#prelink#.Pd98lu (deleted)            [.] 0x00000000038844
        21.55%   pidgin  /lib64/libpthread-2.10.1.so.#prelink#.AFwK8Q (deleted)               [.] 0x0000000000a42d
        10.85%   pidgin  [kernel]                                                             [.] vread_hpet
         7.85%   pidgin  /lib64/libgobject-2.0.so.0.2000.4.#prelink#.o1vpU7 (deleted)         [.] 0x00000000014de8
         3.35%   pidgin  /lib64/libc-2.10.1.so (deleted)                                      [.] 0x0000000007a875
         3.19%   pidgin  /lib64/libdbus-1.so.3.4.0.#prelink#.6mwgZP (deleted)                 [.] 0x0000000001d254
         3.06%   pidgin  /usr/lib64/libgtk-x11-2.0.so.0.1600.5.#prelink#.511hAl (deleted)     [.] 0x000000002334e7
         2.90%   pidgin  /usr/lib64/libgdk-x11-2.0.so.0.1600.5.#prelink#.5qlMo1 (deleted)     [.] 0x00000000037b2d
         1.84%   pidgin  [kernel]                                                             [k] do_sys_poll
         1.45%   pidgin  /usr/lib64/libX11.so.6.2.0.#prelink#.iR59Rx (deleted)                [.] 0x0000000004c751
    [acme@doppio linux-2.6-tip]$
    Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
    Cc: Luis Claudio R. Gonçalves <lclaudio@redhat.com>
    Cc: Clark Williams <williams@redhat.com>
    Cc: H. Peter Anvin <hpa@zytor.com>
    Cc: Peter Zijlstra <peterz@infradead.org>
    Cc: Mike Galbraith <efault@gmx.de>
    Cc: Frédéric Weisbecker <fweisbec@gmail.com>
    LKML-Reference: <20090811200436.GA3478@ghostprotocols.net>
    Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
    1340e6bb
symbol.c 19.7 KB