[PATCH] elf: Make _dl_sort_maps prefer default DFS algorithm

[litenglong]

The default dynamic_sort tunable is 2, which maps to
dso_sort_algorithm_dfs.  Update the likely branch to match the
default, without changing behavior for valid tunable values.

Reviewed-by: gaoxiang<gaoxiang@kylinos.cn>
---
 elf/dl-sort-maps.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/elf/dl-sort-maps.c b/elf/dl-sort-maps.c
index 28ba850a6b..75e6fc1015 100644
--- a/elf/dl-sort-maps.c
+++ b/elf/dl-sort-maps.c
@@ -303,8 +303,8 @@ _dl_sort_maps (struct link_map **maps, unsigned int nmaps,
      PTR_MANGLE/DEMANGLE, further impairing performance of small, common
      input cases. A simple if-case with direct function calls appears to
      be the fastest.  */
-  if (__glibc_likely (GLRO(dl_dso_sort_algo) == dso_sort_algorithm_original))
-    _dl_sort_maps_original (maps, nmaps, force_first, for_fini);
-  else
+  if (__glibc_likely (GLRO(dl_dso_sort_algo) == dso_sort_algorithm_dfs))
     _dl_sort_maps_dfs (maps, nmaps, force_first, for_fini);
+  else
+    _dl_sort_maps_original (maps, nmaps, force_first, for_fini);
 }
-- 
2.25.1