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Subject[PATCH 5/5] perf tools: Fix perf_session__delete removal for report command
Date
There's no point of having out_delete label with perf_session__delete
call within __cmd_report function, because it's called at the
end of the cmd_report function.

The speed up due to commenting out the perf_session__delete
at the end does not seem relevant anymore. Measured speedup
for ~1GB data file with 222466 FORKS events is around 0.5%.

$ perf report -i perf.data.delete -P perf_session__delete -s parent

+ 99.51% [other]
+ 0.49% perf_session__delete

Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Stephane Eranian <eranian@google.com>
---
tools/perf/builtin-report.c | 23 +++++------------------
1 file changed, 5 insertions(+), 18 deletions(-)

diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index 8c2c7ce..36de70d 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -497,7 +497,7 @@ static int __cmd_report(struct perf_report *rep)
ret = perf_session__cpu_bitmap(session, rep->cpu_list,
rep->cpu_bitmap);
if (ret)
- goto out_delete;
+ return ret;
}

if (use_browser <= 0)
@@ -508,11 +508,11 @@ static int __cmd_report(struct perf_report *rep)

ret = perf_report__setup_sample_type(rep);
if (ret)
- goto out_delete;
+ return ret;

ret = perf_session__process_events(session, &rep->tool);
if (ret)
- goto out_delete;
+ return ret;

kernel_map = session->machines.host.vmlinux_maps[MAP__FUNCTION];
kernel_kmap = map__kmap(kernel_map);
@@ -547,7 +547,7 @@ static int __cmd_report(struct perf_report *rep)

if (dump_trace) {
perf_session__fprintf_nr_events(session, stdout);
- goto out_delete;
+ return 0;
}

nr_samples = 0;
@@ -572,7 +572,7 @@ static int __cmd_report(struct perf_report *rep)

if (nr_samples == 0) {
ui__error("The %s file has no samples!\n", session->filename);
- goto out_delete;
+ return 0;
}

list_for_each_entry(pos, &session->evlist->entries, node)
@@ -598,19 +598,6 @@ static int __cmd_report(struct perf_report *rep)
} else
perf_evlist__tty_browse_hists(session->evlist, rep, help);

-out_delete:
- /*
- * Speed up the exit process, for large files this can
- * take quite a while.
- *
- * XXX Enable this when using valgrind or if we ever
- * librarize this command.
- *
- * Also experiment with obstacks to see how much speed
- * up we'll get here.
- *
- * perf_session__delete(session);
- */
return ret;
}

--
1.7.11.7


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