diff options
| author | Davidlohr Bueso <dave@stgolabs.net> | 2018-12-06 22:18:17 +0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2019-01-25 17:12:10 +0300 |
| commit | 7137ff50b68a48bc28270c91b1c313259ab0c1c4 (patch) | |
| tree | 9af6b7fc0ae471e61d9a9d177f1f12d33e790d2b /tools/perf/util/probe-event.c | |
| parent | ca2270292e6c3415102242bf9dc3d05f622b7b28 (diff) | |
| download | linux-7137ff50b68a48bc28270c91b1c313259ab0c1c4.tar.xz | |
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/probe-event.c')
| -rw-r--r-- | tools/perf/util/probe-event.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/tools/perf/util/probe-event.c b/tools/perf/util/probe-event.c index 736787a18b9e..4008f0cc36e5 100644 --- a/tools/perf/util/probe-event.c +++ b/tools/perf/util/probe-event.c @@ -3529,7 +3529,8 @@ int show_available_funcs(const char *target, struct nsinfo *nsi, /* Show all (filtered) symbols */ setup_pager(); - for (nd = rb_first(&map->dso->symbol_names); nd; nd = rb_next(nd)) { + for (nd = rb_first_cached(&map->dso->symbol_names); nd; + nd = rb_next(nd)) { struct symbol_name_rb_node *pos = rb_entry(nd, struct symbol_name_rb_node, rb_node); if (strfilter__compare(_filter, pos->sym.name)) |