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perf annotate: Add function header to --stdio2 

# perf annotate --stdio2 _raw_spin_lock_irqsave
  _raw_spin_lock_irqsave() /lib/modules/4.16.0-rc4/build/vmlinux
  Event: anon group { cycles, instructions }

    0.00   3.17      → callq  __fentry__
    0.00   7.94        push   %rbx
    7.69  36.51      → callq  __page_file_index
                       mov    %rax,%rbx
    7.69   3.17      → callq  *ffffffff82225cd0
                       xor    %eax,%eax
                       mov    $0x1,%edx
   80.77  49.21        lock   cmpxchg %edx,(%rdi)
                       test   %eax,%eax
                     ↓ jne    2b
    3.85   0.00        mov    %rbx,%rax
                       pop    %rbx
                     ← retq
                 2b:   mov    %eax,%esi
                     → callq  queued_spin_lock_slowpath
                       mov    %rbx,%rax
                       pop    %rbx
                     ← retq
  #

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jin Yao <yao.jin@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: https://lkml.kernel.org/n/tip-i86yfyzl8m194ioxgj1jo32f@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Arnaldo Carvalho de Melo 2018-03-16 15:17:23 -03:00
parent 3563289208
commit 864298f224
1 changed files with 8 additions and 0 deletions
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8
tools/perf/util/annotate.c
View File

@ -2244,6 +2244,8 @@ int symbol__tty_annotate2(struct symbol *sym, struct map *map,
struct dso *dso = map->dso;
struct rb_root source_line = RB_ROOT;
struct annotation_options opts = annotation__default_options;
const char *ev_name = perf_evsel__name(evsel);
char buf[1024];
if (symbol__annotate2(sym, map, evsel, &opts, NULL) < 0)
return -1;
@ -2254,6 +2256,12 @@ int symbol__tty_annotate2(struct symbol *sym, struct map *map,
print_summary(&source_line, dso->long_name);
}
if (perf_evsel__is_group_event(evsel)) {
perf_evsel__group_desc(evsel, buf, sizeof(buf));
ev_name = buf;
}
fprintf(stdout, "%s() %s\nEvent: %s\n\n", sym->name, dso->long_name, ev_name);
symbol__annotate_fprintf2(sym, stdout);
annotated_source__purge(symbol__annotation(sym)->src);