[ Upstream commit da3a53a7390a89391bd63bead0c2e9af4c5ef3d6 ] Add function __maps__purge_names() to purge all maps from the names tree. We need to cleanup the names tree in maps__exit().
Detected with gcc's ASan. Signed-off-by: Changbin Du <[email protected]> Reviewed-by: Jiri Olsa <[email protected]> Cc: Alexei Starovoitov <[email protected]> Cc: Daniel Borkmann <[email protected]> Cc: Eric Saint-Etienne <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Steven Rostedt (VMware) <[email protected]> Fixes: 1e6285699b30 ("perf symbols: Fix slowness due to -ffunction-section") Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]> Signed-off-by: Sasha Levin <[email protected]> --- tools/perf/util/map.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/tools/perf/util/map.c b/tools/perf/util/map.c index 750ecc3dad50..2b37f56f0549 100644 --- a/tools/perf/util/map.c +++ b/tools/perf/util/map.c @@ -571,10 +571,25 @@ static void __maps__purge(struct maps *maps) } } +static void __maps__purge_names(struct maps *maps) +{ + struct rb_root *root = &maps->names; + struct rb_node *next = rb_first(root); + + while (next) { + struct map *pos = rb_entry(next, struct map, rb_node_name); + + next = rb_next(&pos->rb_node_name); + rb_erase_init(&pos->rb_node_name, root); + map__put(pos); + } +} + static void maps__exit(struct maps *maps) { down_write(&maps->lock); __maps__purge(maps); + __maps__purge_names(maps); up_write(&maps->lock); } -- 2.19.1
