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perf callchain: Append callchains only when requested

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The perf report --children can be called with callchain disabled so no
need to append callchains.  Actually the root of callchain tree is not
initialized properly in this case.

Signed-off-by: Namhyung Kim <[email protected]>
Cc: Adrian Hunter <[email protected]>
Cc: David Ahern <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Stephane Eranian <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
This commit is contained in:
Namhyung Kim 2014-12-22 13:44:14 +09:00 • committed by Arnaldo Carvalho de Melo
commit 82aa019e00
1 changed files with 4 additions and 3 deletions
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7
tools/perf/util/hist.c
View file

@ -304,7 +304,7 @@ static struct hist_entry *hist_entry__new(struct hist_entry *template,
size_t callchain_size = 0;
struct hist_entry *he;
if (symbol_conf.use_callchain || symbol_conf.cumulate_callchain)
if (symbol_conf.use_callchain)
callchain_size = sizeof(struct callchain_root);
he = zalloc(sizeof(*he) + callchain_size);
@ -737,7 +737,7 @@ iter_add_single_cumulative_entry(struct hist_entry_iter *iter,
iter->he = he;
he_cache[iter->curr++] = he;
callchain_append(he->callchain, &callchain_cursor, sample->period);
hist_entry__append_callchain(he, sample);
/*
* We need to re-initialize the cursor since callchain_append()
@ -810,7 +810,8 @@ iter_add_next_cumulative_entry(struct hist_entry_iter *iter,
iter->he = he;
he_cache[iter->curr++] = he;
callchain_append(he->callchain, &cursor, sample->period);
if (symbol_conf.use_callchain)
callchain_append(he->callchain, &cursor, sample->period);
return 0;
}