[tip:perf/core] perf machine: Do not call map_groups__delete(), drop refcnt instead

[tip-bot for Arnaldo Carvalho de Melo <tipbot@zytor.com>]

Commit-ID:  8e160b2e1e3efdd84ddef726f9b5136dd192a682
Gitweb:     http://git.kernel.org/tip/8e160b2e1e3efdd84ddef726f9b5136dd192a682
Author:     Arnaldo Carvalho de Melo <acme@redhat.com>
AuthorDate: Tue, 19 May 2015 20:07:14 -0300
Committer:  Arnaldo Carvalho de Melo <acme@redhat.com>
CommitDate: Wed, 27 May 2015 12:21:44 -0300

perf machine: Do not call map_groups__delete(), drop refcnt instead

It could be used somewhere, so just call map__groups_put() to make sure
we don't delete it prematurely

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: David Ahern <dsahern@gmail.com>
Cc: Don Zickus <dzickus@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-dxmh8mr12i65p8h909vi88cp@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
 tools/perf/util/machine.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/perf/util/machine.c b/tools/perf/util/machine.c
index daa5591..7ec3188 100644
--- a/tools/perf/util/machine.c
+++ b/tools/perf/util/machine.c
@@ -333,7 +333,7 @@ static void machine__update_thread_pid(struct machine *machine,
 		if (!map_groups__empty(th->mg))
 			pr_err("Discarding thread maps for %d:%d\n",
 			       th->pid_, th->tid);
-		map_groups__delete(th->mg);
+		map_groups__put(th->mg);
 	}
 
 	th->mg = map_groups__get(leader->mg);