mm: uninline kstrdup()

gcc inlines kstrdup into kstrdup_const() but it can very efficiently tail call into it instead: $ ./scripts/bloat-o-meter ../vmlinux-000 ../obj/vmlinux add/remove: 0/0 grow/shrink: 0/1 up/down: 0/-84 (-84) Function old new delta kstrdup_const 119 35 -84 Link: https://lkml.kernel.org/r/Y/4fDlbIhTLNLFHz@p183 Signed-off-by: Alexey Dobriyan <[email protected]> Signed-off-by: Andrew Morton <[email protected]>
daniel-0723 · Apr 8, 2023 · 2a6772e · 2a6772e
1 parent 6d51363
commit 2a6772e
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/mm/util.c b/mm/util.c
@@ -49,6 +49,7 @@ EXPORT_SYMBOL(kfree_const);
  *
  * Return: newly allocated copy of @s or %NULL in case of error
  */
+noinline
 char *kstrdup(const char *s, gfp_t gfp)
 {
 	size_t len;