+ mm-uninline-kstrdup.patch added to mm-nonmm-unstable branch

+ mm-uninline-kstrdup.patch added to mm-nonmm-unstable branch

[Andrew Morton]

The patch titled
     Subject: mm: uninline kstrdup()
has been added to the -mm mm-nonmm-unstable branch.  Its filename is
     mm-uninline-kstrdup.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-uninline-kstrdup.patch

This patch will later appear in the mm-nonmm-unstable branch at
    git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

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------------------------------------------------------
From: Alexey Dobriyan <adobriyan@gmail.com>
Subject: mm: uninline kstrdup()
Date: Tue, 28 Feb 2023 18:34:38 +0300

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 <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/util.c |    1 +
 1 file changed, 1 insertion(+)

--- a/mm/util.c~mm-uninline-kstrdup
+++ a/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;
_

Patches currently in -mm which might be from adobriyan@gmail.com are

mm-uninline-kstrdup.patch