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perf report: Indicate JITed code better in report

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Print [TID] tid %d instead of the crypted /tmp/perf-%d.map default.

% cat >loop.java
  public class loop {
          public static void main(String[] args)
          {
                  for (;;);
          }
  }
  ^D
  % javac loop.java
  % perf record java loop
  ^C

Before:

  % perf report --stdio
  ...
      56.09%  java     perf-34724.map      [.] 0x00007fd5bd021896
      19.12%  java     perf-34724.map      [.] 0x00007fd5bd021887
       9.79%  java     perf-34724.map      [.] 0x00007fd5bd021783
       8.97%  java     perf-34724.map      [.] 0x00007fd5bd02175b

After:

  % perf report --stdio
  ...
      56.09%  java     [JIT] tid 34724     [.] 0x00007fd5bd021896
      19.12%  java     [JIT] tid 34724     [.] 0x00007fd5bd021887
       9.79%  java     [JIT] tid 34724     [.] 0x00007fd5bd021783
       8.97%  java     [JIT] tid 34724     [.] 0x00007fd5bd02175b

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
LPU-Reference: 20190314225002.30108-7-andi@firstfloor.org
Link: https://lkml.kernel.org/n/tip-r17l6py9g0sezb7mi1f286gt@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Andi Kleen 2019-03-14 15:49:59 -07:00 • committed by Arnaldo Carvalho de Melo
parent 702fb9b415
commit a4e7e6efab
1 changed files with 24 additions and 18 deletions
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12
tools/perf/util/dso.c
View file

@ -1141,12 +1141,18 @@ void dso__set_short_name(struct dso *dso, const char *name, bool name_allocated)
static void dso__set_basename(struct dso *dso)
{
char *base, *lname;
int tid;
if (sscanf(dso->long_name, "/tmp/perf-%d.map", &tid) == 1) {
if (asprintf(&base, "[JIT] tid %d", tid) < 0)
return;
} else {
/*
* basename() may modify path buffer, so we must pass
* a copy.
*/
char *base, *lname = strdup(dso->long_name);
lname = strdup(dso->long_name);
if (!lname)
return;
@ -1161,7 +1167,7 @@ static void dso__set_basename(struct dso *dso)
if (!base)
return;
}
dso__set_short_name(dso, base, true);
}