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Subject[tip:perf/core] perf machine: Fix to destroy kernel maps when machine exits
Commit-ID:  ebe9729c8c3171aa46ad5d7af40acdc29806689d
Gitweb: http://git.kernel.org/tip/ebe9729c8c3171aa46ad5d7af40acdc29806689d
Author: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
AuthorDate: Wed, 18 Nov 2015 15:40:24 +0900
Committer: Arnaldo Carvalho de Melo <acme@redhat.com>
CommitDate: Thu, 19 Nov 2015 13:19:19 -0300

perf machine: Fix to destroy kernel maps when machine exits

Actually machine__exit forgot to call machine__destroy_kernel_maps.

This fixes some memory leaks on map as below.

Without this fix.
----
./perf probe vfs_read
Added new event:
probe:vfs_read (on vfs_read)

You can now use it in all perf tools, such as:

perf record -e probe:vfs_read -aR sleep 1

REFCNT: BUG: Unreclaimed objects found.
REFCNT: Total 4 objects are not reclaimed.
To see all backtraces, rerun with -v option
----
With this fix.
----
./perf probe vfs_read
Added new event:
probe:vfs_read (on vfs_read)

You can now use it in all perf tools, such as:

perf record -e probe:vfs_read -aR sleep 1

REFCNT: BUG: Unreclaimed objects found.
REFCNT: Total 2 objects are not reclaimed.
To see all backtraces, rerun with -v option
----

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/20151118064024.30709.43577.stgit@localhost.localdomain
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/util/machine.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/tools/perf/util/machine.c b/tools/perf/util/machine.c
index e9e09be..a358771 100644
--- a/tools/perf/util/machine.c
+++ b/tools/perf/util/machine.c
@@ -122,6 +122,7 @@ void machine__delete_threads(struct machine *machine)

void machine__exit(struct machine *machine)
{
+ machine__destroy_kernel_maps(machine);
map_groups__exit(&machine->kmaps);
dsos__exit(&machine->dsos);
machine__exit_vdso(machine);

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