[tip:perf/core] perf stat: Fix cmd_stat to release cpu_map

tip-bot for Masami Hiramatsu
2015-12-10T08:16:47Z

Commit-ID: 544c2ae7b1a794ad0bc5ec24d832ab5658d5aef6
Gitweb: http://git.kernel.org/tip/544c2ae7b1a794ad0bc5ec24d832ab5658d5aef6
Author: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
AuthorDate: Wed, 9 Dec 2015 11:11:27 +0900
Committer: Arnaldo Carvalho de Melo <acme@redhat.com>
CommitDate: Wed, 9 Dec 2015 13:41:59 -0300

perf stat: Fix cmd_stat to release cpu_map

Fix cmd_stat() to release cpu_map objects (aggr_map and
cpus_aggr_map) afterwards.

refcnt debugger shows that the cmd_stat initializes cpu_map
but not puts it.
----
# ./perf stat -v ls
....
REFCNT: BUG: Unreclaimed objects found.
==== [0] ====
Unreclaimed cpu_map@0x29339c0
Refcount +1 => 1 at
./perf(cpu_map__empty_new+0x6d) [0x4e64bd]
./perf(cmd_stat+0x5fe) [0x43594e]
./perf() [0x47b785]
./perf(main+0x617) [0x422587]
/lib64/libc.so.6(__libc_start_main+0xf5) [0x7f2dff420af5]
./perf() [0x4226fd]
REFCNT: Total 1 objects are not reclaimed.
"cpu_map" leaks 1 objects
----

Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/20151209021127.10245.93697.stgit@localhost.localdomain
[ Remove NULL checks before calling the put operation, it checks it already ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/builtin-stat.c | 9 +++++++++
1 file changed, 9 insertions(+)

diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
index e74712d..25a95f4 100644
--- a/tools/perf/builtin-stat.c
+++ b/tools/perf/builtin-stat.c
@@ -1094,6 +1094,14 @@ static int perf_stat_init_aggr_mode(void)
return cpus_aggr_map ? 0 : -ENOMEM;
}

+static void perf_stat__exit_aggr_mode(void)
+{
+ cpu_map__put(aggr_map);
+ cpu_map__put(cpus_aggr_map);
+ aggr_map = NULL;
+ cpus_aggr_map = NULL;
+}
+
/*
* Add default attributes, if there were no attributes specified or
* if -d/--detailed, -d -d or -d -d -d is used:
@@ -1442,6 +1450,7 @@ int cmd_stat(int argc, const char **argv, const char *prefix __maybe_unused)
if (!forever && status != -1 && !interval)
print_counters(NULL, argc, argv);

+ perf_stat__exit_aggr_mode();
perf_evlist__free_stats(evsel_list);
out:
perf_evlist__delete(evsel_list);