From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id CFF90475341 for ; Mon, 21 Sep 2026 22:49:36 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790030978; cv=none; b=UH61ejIm5aQ516xSTiBHu7UPUl980ON74GwMbbZ3OkPpS6mjHrJaZVrRc0KsXH1gIiy6s8X6TIJjGrUo3IndgdxzalUFnHysQK8kNI2fQbLT4FjIuMIG02wp7l2IGgBZ6scjnvbo3MrBzUr6GCe7kGkB+ALatGpTUGWObq3NioM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790030978; c=relaxed/simple; bh=xrWAh6j9i2TlM4XSWoo5SHLlREop0asmP7aavXS02cM=; h=Date:To:From:Subject:Message-Id; b=lYVhDDwBsCpv9Jo2rk6Kgmh28ad4goxtnDN66GsVZHH3vF+nLPkIIOmi76AoYgC1lv/QJj8XiqR9uTbPkQtz2PyC86rPpr66UN/7UzeMwjsQLwpEeECATcqgjTsSJYfsu6uXPrbCPJ5mTA8HmjZqw+nM1KDIJ57YDHRpwAlDKak= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b=C1oy5ZIP; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b="C1oy5ZIP" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 63F3C1F00893; Mon, 21 Sep 2026 22:49:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux-foundation.org; s=korg; t=1790030976; bh=QHX/Hhj2mVwatTXjI9VQxTB3+irWaO0UlpvtIWVNtUM=; h=Date:To:From:Subject; b=C1oy5ZIP2j/jzHAO9sBUHkfIVT+koOZ0aAYOAQ4O4Hn0EEppU86QEHeiy935nPGxi 61eq/THneHiJJQJHfcxT7UTBRQG8FwU+hPJ+cFWFFhqrSDZgrNr7LBW5C+BPOX2+KN 0Fmuy9TEOOBTK4qRAyUil0is76vka9vYtHMaWHyw= Date: Mon, 21 Sep 2026 15:49:35 -0700 To: mm-commits@vger.kernel.org,david@kernel.org,akpm@linux-foundation.org From: Andrew Morton Subject: + mm-sparse-rename-and-cleanup-sparse_init_nid.patch added to mm-new branch Message-Id: <20260921224936.63F3C1F00893@smtp.kernel.org> Precedence: bulk X-Mailing-List: mm-commits@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: The patch titled Subject: mm/sparse: rename and cleanup sparse_init_nid() has been added to the -mm mm-new branch. Its filename is mm-sparse-rename-and-cleanup-sparse_init_nid.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-sparse-rename-and-cleanup-sparse_init_nid.patch This patch will later appear in the mm-new branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Note, mm-new is a provisional staging ground for work-in-progress patches, and acceptance into mm-new is a notification for others take notice and to finish up reviews. Please do not hesitate to respond to review feedback and post updated versions to replace or incrementally fixup patches in mm-new. The mm-new branch of mm.git is not included in linux-next If a few days of testing in mm-new is successful, the patch will me moved into mm.git's mm-unstable branch, which is included in linux-next Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/process/submit-checklist.rst when testing your code *** The -mm tree is included into linux-next via various branches at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm and is updated there most days ------------------------------------------------------ From: "David Hildenbrand (Arm)" Subject: mm/sparse: rename and cleanup sparse_init_nid() Date: Mon, 21 Sep 2026 21:58:56 +0200 Let's rename it to "sparse_metadata_init_nid", avoid the "pnum" terminology and drop the function comment. Further, rename the "map" variable to "mem_map" for consistency with other functions. Link: https://lore.kernel.org/20260921-b4-sparsemem_cleanups-v2-4-54d81d65e125@kernel.org Signed-off-by: David Hildenbrand (Arm) Signed-off-by: Andrew Morton Acked-by: Oscar Salvador Reviewed-by: Lorenzo Stoakes (ARM) Reviewed-by: Mike Rapoport (Microsoft) Cc: Liam R. Howlett Cc: Vlastimil Babka Cc: Suren Baghdasaryan Cc: Michal Hocko Cc: Kairui Song Cc: Qi Zheng Cc: Shakeel Butt Cc: Barry Song Cc: Axel Rasmussen Cc: Yuanchu Xie Cc: Wei Xu Cc: Baoquan He Cc: Baolin Wang Cc: Brendan Jackman Cc: Johannes Weiner Cc: Zi Yan Cc: Jan Kiszka Cc: Kieran Bingham Cc: Greg Kroah-Hartman Cc: Rafael J. Wysocki Cc: Danilo Krummrich --- mm/sparse.c | 41 ++++++++++++++++++++--------------------- 1 file changed, 20 insertions(+), 21 deletions(-) --- a/mm/sparse.c~mm-sparse-rename-and-cleanup-sparse_init_nid +++ a/mm/sparse.c @@ -221,36 +221,33 @@ void __weak __meminit vmemmap_populate_p { } -/* - * Initialize sparse on a specific node. The node spans [pnum_begin, pnum_end) - * And number of present sections in this node is map_count. - */ -static void __init sparse_init_nid(int nid, unsigned long pnum_begin, - unsigned long pnum_end, - unsigned long map_count) +static void __init sparse_metadata_init_nid(int nid, + unsigned long start_section_nr, unsigned long end_section_nr, + unsigned long nr_sections) { - unsigned long pnum; struct mem_section_usage *usage; + unsigned long section_nr; - usage = memblock_alloc_node(map_count * mem_section_usage_size(), + usage = memblock_alloc_node(nr_sections * mem_section_usage_size(), SMP_CACHE_BYTES, nid); if (!usage) panic("Failed to allocate usemap for node %d\n", nid); - for_each_present_section_nr(pnum_begin, pnum) { - unsigned long pfn = section_nr_to_pfn(pnum); - struct page *map; + for_each_present_section_nr(start_section_nr, section_nr) { + const unsigned long pfn = section_nr_to_pfn(section_nr); + struct page *mem_map; - if (pnum >= pnum_end) + if (section_nr >= end_section_nr) break; - map = __populate_section_memmap(pfn, PAGES_PER_SECTION, - nid, NULL, NULL); - if (!map) - panic("Failed to allocate memmap for section %lu\n", pnum); + mem_map = __populate_section_memmap(pfn, PAGES_PER_SECTION, nid, + NULL, NULL); + if (!mem_map) + panic("Failed to allocate memmap for section %lu\n", + section_nr); memmap_boot_pages_add(section_nr_vmemmap_pages(pfn, PAGES_PER_SECTION)); - sparse_init_one_section(__nr_to_section(pnum), pnum, map, usage, - SECTION_IS_EARLY); + sparse_init_one_section(__nr_to_section(section_nr), section_nr, + mem_map, usage, SECTION_IS_EARLY); usage = (void *)usage + mem_section_usage_size(); } } @@ -268,12 +265,14 @@ static void __init sparse_metadata_init( nr_sections++; continue; } - sparse_init_nid(nid_begin, start_section_nr, section_nr, nr_sections); + sparse_metadata_init_nid(nid_begin, start_section_nr, + section_nr, nr_sections); nid_begin = nid; start_section_nr = section_nr; nr_sections = 1; } - sparse_init_nid(nid_begin, start_section_nr, section_nr, nr_sections); + sparse_metadata_init_nid(nid_begin, start_section_nr, section_nr, + nr_sections); } /* _ Patches currently in -mm which might be from david@kernel.org are maintainers-split-up-memory-management-memory-policy-and-migration.patch maintainers-move-memory-tiering-under-memory-management-numa-placement.patch maintainers-make-gregory-a-co-maintainer-of-memory-management-numa-placement.patch selftests-mm-khugepaged-remove-str_dup-usage.patch mm-sparse-move-mem_section-init-to-sparse_extreme_init.patch mm-sparse-refactor-sparse_sections_init.patch mm-sparse-move-initialization-of-section-metadata-to-sparse_metadata_init.patch mm-sparse-rename-and-cleanup-sparse_init_nid.patch mm-sparse-cleanup-sparse_init_one_section.patch mm-sparse-rename-__highest_present_section_nr-to-__highest_used_section_nr.patch mm-sparse-remove-pfn_in_present_section.patch mm-sparse-move-__highest_used_section_nr-handling.patch scripts-gdb-mmpy-remove-fallbacks-for-section_has_mem_map-and-section_is_early.patch mm-sparse-remove-section_marked_present.patch mm-sparse-remove-flags-parameter-from-sparse_init_one_section.patch fs-proc-page-clarify-comment-in-get_max_dump_pfn.patch mm-memory_hotplug-drop-config_have_arch_pfn_valid-handling-from-pfn_to_online_page.patch