From: "David Hildenbrand (Arm)" <david@kernel.org>
To: linux-kernel@vger.kernel.org
Cc: linux-mm@kvack.org, linux-cxl@vger.kernel.org,
"David Hildenbrand (Arm)" <david@kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
Oscar Salvador <osalvador@suse.de>,
Axel Rasmussen <axelrasmussen@google.com>,
Yuanchu Xie <yuanchu@google.com>, Wei Xu <weixugc@google.com>,
Lorenzo Stoakes <ljs@kernel.org>,
"Liam R. Howlett" <Liam.Howlett@oracle.com>,
Vlastimil Babka <vbabka@kernel.org>,
Mike Rapoport <rppt@kernel.org>,
Suren Baghdasaryan <surenb@google.com>,
Michal Hocko <mhocko@suse.com>
Subject: [PATCH 13/14] mm/sparse: move __section_mark_present() to internal.h
Date: Tue, 17 Mar 2026 17:56:51 +0100 [thread overview]
Message-ID: <20260317165652.99114-14-david@kernel.org> (raw)
In-Reply-To: <20260317165652.99114-1-david@kernel.org>
Let's prepare for moving memory hotplug handling from sparse.c to
sparse-vmemmap.c by moving __section_mark_present() to internal.h.
Signed-off-by: David Hildenbrand (Arm) <david@kernel.org>
---
mm/internal.h | 9 +++++++++
mm/sparse.c | 8 --------
2 files changed, 9 insertions(+), 8 deletions(-)
diff --git a/mm/internal.h b/mm/internal.h
index bcf4df97b185..835a6f00134e 100644
--- a/mm/internal.h
+++ b/mm/internal.h
@@ -987,6 +987,15 @@ static inline void sparse_init_one_section(struct mem_section *ms,
ms->section_mem_map |= SECTION_HAS_MEM_MAP | flags;
ms->usage = usage;
}
+
+static inline void __section_mark_present(struct mem_section *ms,
+ unsigned long section_nr)
+{
+ if (section_nr > __highest_present_section_nr)
+ __highest_present_section_nr = section_nr;
+
+ ms->section_mem_map |= SECTION_MARKED_PRESENT;
+}
#else
static inline void sparse_init(void) {}
#endif /* CONFIG_SPARSEMEM */
diff --git a/mm/sparse.c b/mm/sparse.c
index 6f5f340301a3..bf620f3fe05d 100644
--- a/mm/sparse.c
+++ b/mm/sparse.c
@@ -161,14 +161,6 @@ static void __meminit mminit_validate_memmodel_limits(unsigned long *start_pfn,
* those loops early.
*/
unsigned long __highest_present_section_nr;
-static void __section_mark_present(struct mem_section *ms,
- unsigned long section_nr)
-{
- if (section_nr > __highest_present_section_nr)
- __highest_present_section_nr = section_nr;
-
- ms->section_mem_map |= SECTION_MARKED_PRESENT;
-}
static inline unsigned long first_present_section_nr(void)
{
--
2.43.0
next prev parent reply other threads:[~2026-03-17 16:57 UTC|newest]
Thread overview: 53+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-03-17 16:56 [PATCH 00/14] mm: memory hot(un)plug and SPARSEMEM cleanups David Hildenbrand (Arm)
2026-03-17 16:56 ` [PATCH 01/14] mm/memory_hotplug: remove for_each_valid_pfn() usage David Hildenbrand (Arm)
2026-03-17 17:19 ` Lorenzo Stoakes (Oracle)
2026-03-17 20:30 ` David Hildenbrand (Arm)
2026-03-18 7:51 ` Mike Rapoport
2026-03-17 16:56 ` [PATCH 02/14] mm/sparse: remove WARN_ONs from (online|offline)_mem_sections() David Hildenbrand (Arm)
2026-03-17 17:21 ` Lorenzo Stoakes (Oracle)
2026-03-18 7:53 ` Mike Rapoport
2026-03-17 16:56 ` [PATCH 03/14] mm/Kconfig: make CONFIG_MEMORY_HOTPLUG depend on CONFIG_SPARSEMEM_VMEMMAP David Hildenbrand (Arm)
2026-03-17 17:22 ` Lorenzo Stoakes (Oracle)
2026-03-18 7:55 ` Mike Rapoport
2026-03-17 16:56 ` [PATCH 04/14] mm/memory_hotplug: simplify check_pfn_span() David Hildenbrand (Arm)
2026-03-17 17:24 ` Lorenzo Stoakes (Oracle)
2026-03-18 7:56 ` Mike Rapoport
2026-03-17 16:56 ` [PATCH 05/14] mm/sparse: remove !CONFIG_SPARSEMEM_VMEMMAP leftovers for CONFIG_MEMORY_HOTPLUG David Hildenbrand (Arm)
2026-03-17 17:54 ` Lorenzo Stoakes (Oracle)
2026-03-18 7:58 ` Mike Rapoport
2026-03-17 16:56 ` [PATCH 06/14] mm/bootmem_info: remove handling for !CONFIG_SPARSEMEM_VMEMMAP David Hildenbrand (Arm)
2026-03-17 17:49 ` Lorenzo Stoakes (Oracle)
2026-03-18 8:15 ` Mike Rapoport
2026-03-20 18:37 ` David Hildenbrand (Arm)
2026-03-17 16:56 ` [PATCH 07/14] mm/bootmem_info: avoid using sparse_decode_mem_map() David Hildenbrand (Arm)
2026-03-17 18:02 ` Lorenzo Stoakes (Oracle)
2026-03-18 8:20 ` Mike Rapoport
2026-03-17 16:56 ` [PATCH 08/14] mm/sparse: remove sparse_decode_mem_map() David Hildenbrand (Arm)
2026-03-17 19:25 ` Lorenzo Stoakes (Oracle)
2026-03-18 8:20 ` Mike Rapoport
2026-03-17 16:56 ` [PATCH 09/14] mm/sparse: remove CONFIG_MEMORY_HOTPLUG-specific usemap allocation handling David Hildenbrand (Arm)
2026-03-17 19:48 ` Lorenzo Stoakes (Oracle)
2026-03-20 18:49 ` David Hildenbrand (Arm)
2026-03-20 18:58 ` David Hildenbrand (Arm)
2026-03-18 8:34 ` Mike Rapoport
2026-03-17 16:56 ` [PATCH 10/14] mm: prepare to move subsection_map_init() to mm/sparse-vmemmap.c David Hildenbrand (Arm)
2026-03-17 19:51 ` Lorenzo Stoakes (Oracle)
2026-03-20 18:59 ` David Hildenbrand (Arm)
2026-03-18 8:46 ` Mike Rapoport
2026-03-20 19:01 ` David Hildenbrand (Arm)
2026-03-17 16:56 ` [PATCH 11/14] mm/sparse: drop set_section_nid() from sparse_add_section() David Hildenbrand (Arm)
2026-03-17 19:55 ` Lorenzo Stoakes (Oracle)
2026-03-18 8:50 ` Mike Rapoport
2026-03-17 16:56 ` [PATCH 12/14] mm/sparse: move sparse_init_one_section() to internal.h David Hildenbrand (Arm)
2026-03-17 20:00 ` Lorenzo Stoakes (Oracle)
2026-03-18 8:54 ` Mike Rapoport
2026-03-17 16:56 ` David Hildenbrand (Arm) [this message]
2026-03-17 20:01 ` [PATCH 13/14] mm/sparse: move __section_mark_present() " Lorenzo Stoakes (Oracle)
2026-03-18 8:56 ` Mike Rapoport
2026-03-20 19:06 ` David Hildenbrand (Arm)
2026-03-17 16:56 ` [PATCH 14/14] mm/sparse: move memory hotplug bits to sparse-vmemmap.c David Hildenbrand (Arm)
2026-03-17 20:09 ` Lorenzo Stoakes (Oracle)
2026-03-20 19:07 ` David Hildenbrand (Arm)
2026-03-18 8:57 ` Mike Rapoport
2026-03-18 19:51 ` [PATCH 00/14] mm: memory hot(un)plug and SPARSEMEM cleanups Andrew Morton
2026-03-18 19:54 ` David Hildenbrand (Arm)
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