diff options
| author | Davidlohr Bueso <dave@stgolabs.net> | 2018-12-06 11:18:17 -0800 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2019-01-25 15:12:10 +0100 |
| commit | 7137ff50b68a48bc28270c91b1c313259ab0c1c4 (patch) | |
| tree | 9af6b7fc0ae471e61d9a9d177f1f12d33e790d2b /tools/perf/util/symbol_fprintf.c | |
| parent | ca2270292e6c3415102242bf9dc3d05f622b7b28 (diff) | |
perf symbols: Use cached rbtrees
At the cost of an extra pointer, we can avoid the O(logN) cost of
finding the first element in the tree (smallest node).
Signed-off-by: Davidlohr Bueso <dbueso@suse.de>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: http://lkml.kernel.org/r/20181206191819.30182-6-dave@stgolabs.net
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/symbol_fprintf.c')
| -rw-r--r-- | tools/perf/util/symbol_fprintf.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/tools/perf/util/symbol_fprintf.c b/tools/perf/util/symbol_fprintf.c index 50472c75da59..02e89b02c2ce 100644 --- a/tools/perf/util/symbol_fprintf.c +++ b/tools/perf/util/symbol_fprintf.c @@ -65,7 +65,7 @@ size_t dso__fprintf_symbols_by_name(struct dso *dso, struct rb_node *nd; struct symbol_name_rb_node *pos; - for (nd = rb_first(&dso->symbol_names); nd; nd = rb_next(nd)) { + for (nd = rb_first_cached(&dso->symbol_names); nd; nd = rb_next(nd)) { pos = rb_entry(nd, struct symbol_name_rb_node, rb_node); fprintf(fp, "%s\n", pos->sym.name); } |