• Adrian Hunter's avatar
    perf symbols: Fix debuginfo search for Ubuntu · 85afd355
    Adrian Hunter authored
    Reportedly, from 19.10 Ubuntu has begun mixing up the location of some
    debug symbol files, putting files expected to be in
    /usr/lib/debug/usr/lib into /usr/lib/debug/lib instead. Fix by adding
    another dso_binary_type.
    
    Example on Ubuntu 20.04
    
      Before:
    
        $ perf record -e intel_pt//u uname
        Linux
        [ perf record: Woken up 1 times to write data ]
        [ perf record: Captured and wrote 0.030 MB perf.data ]
        $ perf script --call-trace | head -5
               uname 14003 [005] 15321.764958566:  cbr: 42 freq: 4219 MHz (156%)
               uname 14003 [005] 15321.764958566: (/usr/lib/x86_64-linux-gnu/ld-2.31.so              )          7f1e71cc4100
               uname 14003 [005] 15321.764961566: (/usr/lib/x86_64-linux-gnu/ld-2.31.so              )              7f1e71cc4df0
               uname 14003 [005] 15321.764961900: (/usr/lib/x86_64-linux-gnu/ld-2.31.so              )              7f1e71cc4e18
               uname 14003 [005] 15321.764963233: (/usr/lib/x86_64-linux-gnu/ld-2.31.so              )              7f1e71cc5128
    
      After:
    
        $ perf script --call-trace | head -5
               uname 14003 [005] 15321.764958566:  cbr: 42 freq: 4219 MHz (156%)
               uname 14003 [005] 15321.764958566: (/usr/lib/x86_64-linux-gnu/ld-2.31.so              )      _start
               uname 14003 [005] 15321.764961566: (/usr/lib/x86_64-linux-gnu/ld-2.31.so              )          _dl_start
               uname 14003 [005] 15321.764961900: (/usr/lib/x86_64-linux-gnu/ld-2.31.so              )          _dl_start
               uname 14003 [005] 15321.764963233: (/usr/lib/x86_64-linux-gnu/ld-2.31.so              )          _dl_start
    Reported-by: default avatarTravis Downs <travis.downs@gmail.com>
    Signed-off-by: default avatarAdrian Hunter <adrian.hunter@intel.com>
    Cc: Jiri Olsa <jolsa@redhat.com>
    Cc: stable@vger.kernel.org
    Link: http://lore.kernel.org/lkml/20200526155207.9172-1-adrian.hunter@intel.comSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
    85afd355
dso.h 10.4 KB