From: "David Hildenbrand (Arm)" <david@kernel.org>
To: "David S. Miller" <davem@davemloft.net>,
Andreas Larsson <andreas@gaisler.com>,
Mike Rapoport <rppt@kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
Alexander Gordeev <agordeev@linux.ibm.com>,
Gerald Schaefer <gerald.schaefer@linux.ibm.com>,
Heiko Carstens <hca@linux.ibm.com>,
Vasily Gorbik <gor@linux.ibm.com>,
Christian Borntraeger <borntraeger@linux.ibm.com>,
Sven Schnelle <svens@linux.ibm.com>,
Madhavan Srinivasan <maddy@linux.ibm.com>,
Michael Ellerman <mpe@ellerman.id.au>,
Nicholas Piggin <npiggin@gmail.com>,
"Christophe Leroy (CS GROUP)" <chleroy@kernel.org>,
Lorenzo Stoakes <ljs@kernel.org>,
"Liam R. Howlett" <liam@infradead.org>,
Vlastimil Babka <vbabka@kernel.org>,
Suren Baghdasaryan <surenb@google.com>,
Michal Hocko <mhocko@suse.com>
Cc: sparclinux@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-mm@kvack.org, linux-s390@vger.kernel.org,
linuxppc-dev@lists.ozlabs.org,
"David Hildenbrand (Arm)" <david@kernel.org>
Subject: [PATCH 6/8] mm/bootmem_info: stop marking mem_section_usage as MIX_SECTION_INFO
Date: Mon, 11 May 2026 16:05:34 +0200 [thread overview]
Message-ID: <20260511-bootmem_info_prep-v1-6-3fb0be6fc688@kernel.org> (raw)
In-Reply-To: <20260511-bootmem_info_prep-v1-0-3fb0be6fc688@kernel.org>
We never free the ms->usage data for boot memory sections (see
section_deactivate()). And to identify whether ms->usage was allocated
from memblock, we simply identify it by looking at PG_reserved.
Consequently, there is no need to mark ms->usage as MIX_SECTION_INFO.
Let's just stop doing that.
Signed-off-by: David Hildenbrand (Arm) <david@kernel.org>
---
mm/bootmem_info.c | 12 +-----------
1 file changed, 1 insertion(+), 11 deletions(-)
diff --git a/mm/bootmem_info.c b/mm/bootmem_info.c
index cce1d560f094..0fa78db7fbc0 100644
--- a/mm/bootmem_info.c
+++ b/mm/bootmem_info.c
@@ -38,10 +38,8 @@ void put_page_bootmem(struct page *page)
static void __init register_page_bootmem_info_section(unsigned long start_pfn)
{
- unsigned long mapsize, section_nr, i;
+ unsigned long section_nr;
struct mem_section *ms;
- struct mem_section_usage *usage;
- struct page *page;
start_pfn = SECTION_ALIGN_DOWN(start_pfn);
section_nr = pfn_to_section_nr(start_pfn);
@@ -50,14 +48,6 @@ static void __init register_page_bootmem_info_section(unsigned long start_pfn)
if (!preinited_vmemmap_section(ms))
register_page_bootmem_memmap(section_nr, pfn_to_page(start_pfn),
PAGES_PER_SECTION);
-
- usage = ms->usage;
- page = virt_to_page(usage);
-
- mapsize = PAGE_ALIGN(mem_section_usage_size()) >> PAGE_SHIFT;
-
- for (i = 0; i < mapsize; i++, page++)
- get_page_bootmem(section_nr, page, MIX_SECTION_INFO);
}
void __init register_page_bootmem_info_node(struct pglist_data *pgdat)
--
2.43.0
next prev parent reply other threads:[~2026-05-11 14:06 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-05-11 14:05 [PATCH 0/8] mm: remove CONFIG_HAVE_BOOTMEM_INFO_NODE (Part 1) David Hildenbrand (Arm)
2026-05-11 14:05 ` [PATCH 1/8] sparc/mm: remove register_page_bootmem_info() David Hildenbrand (Arm)
2026-05-12 8:28 ` Oscar Salvador
2026-05-13 8:25 ` Mike Rapoport
2026-05-18 6:55 ` Lance Yang
2026-05-11 14:05 ` [PATCH 2/8] mm/bootmem_info: drop initialization of page->lru David Hildenbrand (Arm)
2026-05-12 8:28 ` Oscar Salvador
2026-05-13 8:27 ` Mike Rapoport
2026-05-18 7:49 ` Lance Yang
2026-05-11 14:05 ` [PATCH 3/8] mm/bootmem_info: stop using PG_private David Hildenbrand (Arm)
2026-05-12 8:30 ` Oscar Salvador
2026-05-13 8:29 ` Mike Rapoport
2026-05-19 2:56 ` Lance Yang
2026-05-11 14:05 ` [PATCH 4/8] mm/bootmem_info: remove call to kmemleak_free_part_phys() David Hildenbrand (Arm)
2026-05-12 8:34 ` Oscar Salvador
2026-05-12 8:45 ` David Hildenbrand (Arm)
2026-05-20 12:15 ` Lance Yang
2026-05-13 8:31 ` Mike Rapoport
2026-05-11 14:05 ` [PATCH 5/8] mm/bootmem_info: stop marking the pgdat as NODE_INFO David Hildenbrand (Arm)
2026-05-12 7:45 ` Michal Hocko
2026-05-12 7:47 ` David Hildenbrand (Arm)
2026-05-12 8:36 ` Oscar Salvador
2026-05-13 8:35 ` Mike Rapoport
2026-05-20 15:30 ` Lance Yang
2026-05-11 14:05 ` David Hildenbrand (Arm) [this message]
2026-05-12 8:37 ` [PATCH 6/8] mm/bootmem_info: stop marking mem_section_usage as MIX_SECTION_INFO Oscar Salvador
2026-05-13 8:38 ` Mike Rapoport
2026-05-21 5:03 ` Lance Yang
2026-05-11 14:05 ` [PATCH 7/8] s390/mm: use free_reserved_page() in vmem_free_pages() David Hildenbrand (Arm)
2026-05-11 14:21 ` Heiko Carstens
2026-05-11 14:24 ` David Hildenbrand (Arm)
2026-05-11 15:22 ` Heiko Carstens
2026-05-11 15:28 ` David Hildenbrand (Arm)
2026-05-12 8:38 ` Oscar Salvador
2026-05-13 8:40 ` Mike Rapoport
2026-05-21 8:39 ` Lance Yang
2026-05-11 14:05 ` [PATCH 8/8] powerpc/mm: remove CONFIG_HAVE_BOOTMEM_INFO_NODE David Hildenbrand (Arm)
2026-05-12 8:43 ` Oscar Salvador
2026-05-13 3:25 ` Ritesh Harjani
2026-05-13 8:41 ` Mike Rapoport
2026-05-21 8:47 ` Lance Yang
2026-05-12 7:46 ` [PATCH 0/8] mm: remove CONFIG_HAVE_BOOTMEM_INFO_NODE (Part 1) Michal Hocko
2026-05-12 7:48 ` David Hildenbrand (Arm)
2026-05-12 8:45 ` Oscar Salvador
2026-05-12 8:51 ` David Hildenbrand (Arm)
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