The patch titled
Subject: mm/page_alloc: add helper for checking if check_pages_enabled
has been added to the -mm mm-unstable branch. Its filename is
mm-page_alloc-add-helper-for-checking-if-check_pages_enabled.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-page_alloc-add-helper-for-checking-if-check_pages_enabled.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: "Mike Rapoport (IBM)" <rppt@xxxxxxxxxx>
Subject: mm/page_alloc: add helper for checking if check_pages_enabled
Date: Sun, 19 Mar 2023 23:59:56 +0200
Instead of duplicating long static_branch_enabled(&check_pages_enabled)
wrap it in a helper function is_check_pages_enabled()
Link: https://lkml.kernel.org/r/20230319220008.2138576-4-rppt@xxxxxxxxxx
Signed-off-by: Mike Rapoport (IBM) <rppt@xxxxxxxxxx>
Reviewed-by: David Hildenbrand <david@xxxxxxxxxx>
Cc: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
Cc: Mel Gorman <mgorman@xxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxxxxx>
Cc: Thomas Bogendoerfer <tsbogend@xxxxxxxxxxxxxxxx>
Cc: Vlastimil Babka <vbabka@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
--- a/mm/page_alloc.c~mm-page_alloc-add-helper-for-checking-if-check_pages_enabled
+++ a/mm/page_alloc.c
@@ -245,6 +245,11 @@ EXPORT_SYMBOL(init_on_free);
/* perform sanity checks on struct pages being allocated or freed */
static DEFINE_STATIC_KEY_MAYBE(CONFIG_DEBUG_VM, check_pages_enabled);
+static inline bool is_check_pages_enabled(void)
+{
+ return static_branch_unlikely(&check_pages_enabled);
+}
+
static bool _init_on_alloc_enabled_early __read_mostly
= IS_ENABLED(CONFIG_INIT_ON_ALLOC_DEFAULT_ON);
static int __init early_init_on_alloc(char *buf)
@@ -1450,7 +1455,7 @@ static __always_inline bool free_pages_p
for (i = 1; i < (1 << order); i++) {
if (compound)
bad += free_tail_pages_check(page, page + i);
- if (static_branch_unlikely(&check_pages_enabled)) {
+ if (is_check_pages_enabled()) {
if (unlikely(free_page_is_bad(page + i))) {
bad++;
continue;
@@ -1463,7 +1468,7 @@ static __always_inline bool free_pages_p
page->mapping = NULL;
if (memcg_kmem_online() && PageMemcgKmem(page))
__memcg_kmem_uncharge_page(page, order);
- if (static_branch_unlikely(&check_pages_enabled)) {
+ if (is_check_pages_enabled()) {
if (free_page_is_bad(page))
bad++;
if (bad)
@@ -2352,7 +2357,7 @@ static int check_new_page(struct page *p
static inline bool check_new_pages(struct page *page, unsigned int order)
{
- if (static_branch_unlikely(&check_pages_enabled)) {
+ if (is_check_pages_enabled()) {
for (int i = 0; i < (1 << order); i++) {
struct page *p = page + i;
_
Patches currently in -mm which might be from rppt@xxxxxxxxxx are
mm-move-get_page_from_free_area-to-mm-page_allocc.patch
mips-fix-comment-about-pgtable_init.patch
mm-cma-move-init_cma_reserved_pages-to-cmac-and-make-it-static.patch
mm-page_alloc-add-helper-for-checking-if-check_pages_enabled.patch
mm-move-most-of-core-mm-initialization-to-mm-mm_initc.patch
mm-handle-hashdist-initialization-in-mm-mm_initc.patch
mm-page_alloc-rename-page_alloc_init-to-page_alloc_init_cpuhp.patch
init-fold-build_all_zonelists-and-page_alloc_init_cpuhp-to-mm_init.patch
initmm-move-mm_init-to-mm-mm_initc-and-rename-it-to-mm_core_init.patch
mm-move-pgtable_init-to-mm-mm_initc-and-make-it-static.patch
mm-move-init_mem_debugging_and_hardening-to-mm-mm_initc.patch
initmm-fold-late-call-to-page_ext_init-to-page_alloc_init_late.patch
mm-move-mem_init_print_info-to-mm_initc.patch
mm-move-kmem_cache_init-declaration-to-mm-slabh.patch
mm-move-vmalloc_init-declaration-to-mm-internalh.patch
maintainers-extend-memblock-entry-to-include-mm-initialization.patch
