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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



  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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