Commit a4e7e6ef authored Mar 14, 2019 by Andi Kleen Committed by Arnaldo Carvalho de Melo Mar 19, 2019

perf report: Indicate JITed code better in report



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>

parent 702fb9b4

tools/perf/util/dso.c

+24 −18

Original line number	Diff line number	Diff line
		@@ -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);
		}