diff options
| author | Feng Tang <feng.tang@intel.com> | 2012-09-07 16:42:23 +0800 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2012-09-17 13:10:57 -0300 |
| commit | 1500b93b61fc70a1176871b64f1c8ae3bd4da9dd (patch) | |
| tree | 9ba9dab784a220d565922bd8ac153014ecbadc10 /tools/perf | |
| parent | 87ff50a3192152944d8e65b485bbf3d03214d0b6 (diff) | |
perf symbols: Filter samples with unresolved symbol when "--symbols" option is used
Report/top commands support to only handle specific symbols with
"--symbols" option, but current code will keep those samples whose
symbol can't be resolved, which should actually be filtered.
If we run following commands:
$perf record -a tree
$perf report --symbols intel_idle -n
the output will be:
Without the patch:
==================
46.27% 156 sshd [unknown]
26.05% 48 swapper [kernel.kallsyms]
17.26% 38 tree libc-2.12.1.so
7.69% 17 tree tree
2.73% 6 tree ld-2.12.1.so
With the patch:
===============
100.00% 48 swapper [kernel.kallsyms]
Signed-off-by: Feng Tang <feng.tang@intel.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1347007349-3102-2-git-send-email-feng.tang@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf')
| -rw-r--r-- | tools/perf/util/event.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/tools/perf/util/event.c b/tools/perf/util/event.c index 8202f5ca048..6715b193872 100644 --- a/tools/perf/util/event.c +++ b/tools/perf/util/event.c @@ -904,8 +904,9 @@ int perf_event__preprocess_sample(const union perf_event *event, al->sym = map__find_symbol(al->map, al->addr, filter); } - if (symbol_conf.sym_list && al->sym && - !strlist__has_entry(symbol_conf.sym_list, al->sym->name)) + if (symbol_conf.sym_list && + (!al->sym || !strlist__has_entry(symbol_conf.sym_list, + al->sym->name))) goto out_filtered; return 0; |