lkml.org 
[lkml]   [2014]   [Dec]   [22]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 09/10] perf callchain: Append callchains only when requested
Date
From: Namhyung Kim <namhyung@kernel.org>

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 <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1419223455-4362-7-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/util/hist.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c
index bd4a2cd73236..30ff2cb92884 100644
--- a/tools/perf/util/hist.c
+++ b/tools/perf/util/hist.c
@@ -300,7 +300,7 @@ 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);
@@ -735,7 +735,7 @@ 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()
@@ -808,7 +808,8 @@ 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;
}

--
1.9.3


\
 
 \ /
  Last update: 2014-12-22 16:41    [W:0.223 / U:0.192 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site