Commit 2a6772eb authored by Alexey Dobriyan's avatar Alexey Dobriyan Committed by Andrew Morton
Browse files

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: default avatarAlexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
parent 6d51363d

mm/util.c

+1 −0
Original line number Diff line number Diff line
@@ -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;