Messages in this thread | | | Date | Tue, 25 Jun 2013 11:07:36 -0600 | From | David Ahern <> | Subject | Re: [PATCH 5/5] perf tools: Fix perf_session__delete removal for report command |
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On 6/25/13 5:54 AM, Jiri Olsa wrote: > 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.
Is convenient to have a single return point for a function. Perhaps change the label to just out and remove the comment?
David
> > 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; > } > >
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