+ mm-hugetlb-move-huge_boot_pages-list-init-to-hugetlb_bootmem_alloc.patch added to mm-unstable branch

[Andrew Morton <akpm@linux-foundation.org>]

The patch titled
     Subject: mm/hugetlb: move huge_boot_pages list init to hugetlb_bootmem_alloc
has been added to the -mm mm-unstable branch.  Its filename is
     mm-hugetlb-move-huge_boot_pages-list-init-to-hugetlb_bootmem_alloc.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-hugetlb-move-huge_boot_pages-list-init-to-hugetlb_bootmem_alloc.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: Frank van der Linden <fvdl@google.com>
Subject: mm/hugetlb: move huge_boot_pages list init to hugetlb_bootmem_alloc
Date: Mon, 27 Jan 2025 23:21:57 +0000

Instead of initializing the per-node hugetlb bootmem pages list from the
alloc function, we can now do it in a somewhat cleaner way, since there is
an explicit hugetlb_bootmem_alloc function.  Initialize the lists there.

Link: https://lkml.kernel.org/r/20250127232207.3888640-18-fvdl@google.com
Signed-off-by: Frank van der Linden <fvdl@google.com>
Cc: Alexander Gordeev <agordeev@linux.ibm.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Joao Martins <joao.m.martins@oracle.com>
Cc: Madhavan Srinivasan <maddy@linux.ibm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Roman Gushchin (Cruise) <roman.gushchin@linux.dev>
Cc: Usama Arif <usama.arif@bytedance.com>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Yu Zhao <yuzhao@google.com>
Cc: Zhenguo Yao <yaozhenguo1@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/hugetlb.c |   19 +++++++------------
 1 file changed, 7 insertions(+), 12 deletions(-)

--- a/mm/hugetlb.c~mm-hugetlb-move-huge_boot_pages-list-init-to-hugetlb_bootmem_alloc
+++ a/mm/hugetlb.c
@@ -3579,7 +3579,6 @@ static unsigned long __init hugetlb_page
 static void __init hugetlb_hstate_alloc_pages(struct hstate *h)
 {
 	unsigned long allocated;
-	static bool initialized __initdata;
 
 	/* skip gigantic hugepages allocation if hugetlb_cma enabled */
 	if (hstate_is_gigantic(h) && hugetlb_cma_size) {
@@ -3587,17 +3586,6 @@ static void __init hugetlb_hstate_alloc_
 		return;
 	}
 
-	/* hugetlb_hstate_alloc_pages will be called many times, initialize huge_boot_pages once */
-	if (!initialized) {
-		int i = 0;
-
-		for (i = 0; i < MAX_NUMNODES; i++)
-			INIT_LIST_HEAD(&huge_boot_pages[i]);
-		h->next_nid_to_alloc = first_online_node;
-		h->next_nid_to_free = first_online_node;
-		initialized = true;
-	}
-
 	/* do node specific alloc */
 	if (hugetlb_hstate_alloc_pages_specific_nodes(h))
 		return;
@@ -4921,13 +4909,20 @@ bool __init hugetlb_bootmem_allocated(vo
 void __init hugetlb_bootmem_alloc(void)
 {
 	struct hstate *h;
+	int i;
 
 	if (__hugetlb_bootmem_allocated)
 		return;
 
+	for (i = 0; i < MAX_NUMNODES; i++)
+		INIT_LIST_HEAD(&huge_boot_pages[i]);
+
 	hugetlb_parse_params();
 
 	for_each_hstate(h) {
+		h->next_nid_to_alloc = first_online_node;
+		h->next_nid_to_free = first_online_node;
+
 		if (hstate_is_gigantic(h))
 			hugetlb_hstate_alloc_pages(h);
 	}
_

Patches currently in -mm which might be from fvdl@google.com are

mm-cma-export-total-and-free-number-of-pages-for-cma-areas.patch
mm-cma-support-multiple-contiguous-ranges-if-requested.patch
mm-cma-introduce-cma_intersects-function.patch
mm-hugetlb-use-cma_declare_contiguous_multi.patch
mm-hugetlb-fix-round-robin-bootmem-allocation.patch
mm-hugetlb-remove-redundant-__clearpagereserved.patch
mm-hugetlb-use-online-nodes-for-bootmem-allocation.patch
mm-hugetlb-convert-cmdline-parameters-from-setup-to-early.patch
x86-mm-make-register_page_bootmem_memmap-handle-pte-mappings.patch
mm-bootmem_info-export-register_page_bootmem_memmap.patch
mm-sparse-allow-for-alternate-vmemmap-section-init-at-boot.patch
mm-hugetlb-set-migratetype-for-bootmem-folios.patch
mm-define-__init_reserved_page_zone-function.patch
mm-hugetlb-check-bootmem-pages-for-zone-intersections.patch
mm-sparse-add-vmemmap__hvo-functions.patch
mm-hugetlb-deal-with-multiple-calls-to-hugetlb_bootmem_alloc.patch
mm-hugetlb-move-huge_boot_pages-list-init-to-hugetlb_bootmem_alloc.patch
mm-hugetlb-add-pre-hvo-framework.patch
mm-hugetlb_vmemmap-fix-hugetlb_vmemmap_restore_folios-definition.patch
mm-hugetlb-do-pre-hvo-for-bootmem-allocated-pages.patch
x86-setup-call-hugetlb_bootmem_alloc-early.patch
x86-mm-set-arch_want_sparsemem_vmemmap_preinit.patch
mm-cma-simplify-zone-intersection-check.patch
mm-cma-introduce-a-cma-validate-function.patch
mm-cma-introduce-interface-for-early-reservations.patch
mm-hugetlb-add-hugetlb_cma_only-cmdline-option.patch
mm-hugetlb-enable-bootmem-allocation-from-cma-areas.patch