From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 99EF5C982EE for ; Mon, 21 Sep 2026 19:59:27 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id A21BC6B0096; Mon, 21 Sep 2026 15:59:26 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 9F92F6B0098; Mon, 21 Sep 2026 15:59:26 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 90FE96B0099; Mon, 21 Sep 2026 15:59:26 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0016.hostedemail.com [216.40.44.16]) by kanga.kvack.org (Postfix) with ESMTP id 711AE6B0096 for ; Mon, 21 Sep 2026 15:59:26 -0400 (EDT) Received: from smtpin12.hostedemail.com (lb01a-stub [10.200.18.249]) by unirelay09.hostedemail.com (Postfix) with ESMTP id 5EED28012F for ; Mon, 21 Sep 2026 19:59:25 +0000 (UTC) X-FDA: 85238833890.12.83FFFD2 Received: from tor.source.kernel.org (tor.source.kernel.org [172.105.4.254]) by imf09.hostedemail.com (Postfix) with ESMTP id A46D7140007 for ; Mon, 21 Sep 2026 19:59:23 +0000 (UTC) Authentication-Results: imf09.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20260515 header.b=goOJO+Ju; dmarc=pass (policy=quarantine) header.from=kernel.org; spf=pass (imf09.hostedemail.com: domain of david@kernel.org designates 172.105.4.254 as permitted sender) smtp.mailfrom=david@kernel.org ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1790020763; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=f3OLDjTedsbgC3rcZhdOQN0X2zBug4ET6xkZFH6DZFY=; b=7NOC0Esy09Ua4ZtoCoplMbSHT0i0CEQuTQ37OFdo1n+OimKChIyhVVWBQCWK2wvSijaFif b8kTFOjMUVqBjCt3f4weMEhQG1v0pb9sGYXC5TS7WWXftjF+F0JuukhK4P/CJbv9sEAbR+ mbNoafEdNzXnpTQw1wfzpBzkK4QLXI0= ARC-Seal: i=1; a=rsa-sha256; d=hostedemail.com; s=arc-20220608; cv=none; t=1790020763; b=Nopl9+Gfj+bBPE4sL8fe+f979EUawDLWVi4m0tyTcgrg153UznUBaxavsFmDPGHiSiPf/V A63AXz4hFHiwGwPUH+Wz4rVv9/Y8tnPC8ZsuCZTTzymFvUrjXfT+pBnJ3koiBtwCAZnNvg EBwafjUlmjUmVkF8FWfdyknEMIfZY1M= ARC-Authentication-Results: i=1; imf09.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20260515 header.b=goOJO+Ju; dmarc=pass (policy=quarantine) header.from=kernel.org; spf=pass (imf09.hostedemail.com: domain of david@kernel.org designates 172.105.4.254 as permitted sender) smtp.mailfrom=david@kernel.org Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by tor.source.kernel.org (Postfix) with ESMTP id 2CD7C60142; Mon, 21 Sep 2026 19:59:23 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 907511F00898; Mon, 21 Sep 2026 19:59:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1790020762; bh=f3OLDjTedsbgC3rcZhdOQN0X2zBug4ET6xkZFH6DZFY=; h=From:Date:Subject:References:In-Reply-To:To:Cc; b=goOJO+JucOQyVJhwBfpMh557Mt7X9EpUqiE/EPsXm4eYLVfpDHY4Sz7us7rwrdmnQ Bfe9PXXPxI2rtkVy5TKC1kpPBhNLS0Dfks+8osZBKG+2uxCn93k+LsvLN55gPfnomd 4HcmAsTeQgH22E7n2fE/ONBJ6/4uD9CmmdAep74u34s6N+wXG4C7Wx7N0YyhxML3nn nHXmHNHxzhBBZCOy63EBsxd4Sq90Vlm7Vfz/L/J2QJTZenlQBdgLulgN1JQQDYH3fP U9RH3bGbIYac9um1zcYtRfW35E3dnGxbfY5n/IBwFi+RPzRAEMMBRrUOaGCqgxviVb B2Z/oHF0sdVVg== From: "David Hildenbrand (Arm)" Date: Mon, 21 Sep 2026 21:58:53 +0200 Subject: [PATCH v2 01/13] mm/sparse: move mem_section init to sparse_extreme_init() MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20260921-b4-sparsemem_cleanups-v2-1-54d81d65e125@kernel.org> References: <20260921-b4-sparsemem_cleanups-v2-0-54d81d65e125@kernel.org> In-Reply-To: <20260921-b4-sparsemem_cleanups-v2-0-54d81d65e125@kernel.org> To: Andrew Morton , David Hildenbrand , Lorenzo Stoakes , "Liam R. Howlett" , Vlastimil Babka , Mike Rapoport , Suren Baghdasaryan , Michal Hocko , Kairui Song , Qi Zheng , Shakeel Butt , Barry Song , Axel Rasmussen , Yuanchu Xie , Wei Xu , Baoquan He , Baolin Wang , Brendan Jackman , Johannes Weiner , Zi Yan , Jan Kiszka , Kieran Bingham , Oscar Salvador , Greg Kroah-Hartman , "Rafael J. Wysocki" , Danilo Krummrich Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-cxl@vger.kernel.org, driver-core@lists.linux.dev, linux-fsdevel@vger.kernel.org X-Mailer: b4 0.16.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=2075; i=david@kernel.org; h=from:subject:message-id; bh=RDUKgR4Zh55foA1PVaXPqBWcOHxguZt1tds+dCAcB5o=; b=owGbwMvMwCF2/OVpCdfQ3ZWMp9WSGLI29rQqTbnO8DPl8RKB1sUK0hNk3s8y2fL9/Szpe6K7H Nadqok61FHKwiDGwSArpsgSFHzf4OXLdbXVbnzMMHNYmUCGMHBxCsBEkvwY/kr/UXzOzb2/r9fs yu09Wm8rfa8/a+vamDFbU0OUfd+FlemMDP+jP+p8mDLpZB93zpJFEi3mBRu03Q1VzZ0Fj9xLrq4 tZwIA X-Developer-Key: i=david@kernel.org; a=openpgp; fpr=1BD9CAAD735C4C3A460DFCCA4DDE10F700FF835A X-Rspam-User: X-Rspamd-Server: rspam06 X-Rspamd-Queue-Id: A46D7140007 X-Stat-Signature: ubz58pw7mgg3kjfugbjjxdd79hr4zr81 X-HE-Tag: 1790020763-122859 X-HE-Meta: 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 R3MykTRz eJlzZUkF8FNopg0vSJfE5VE8sM+SsXm/xLN0mr1MR2K7SgsXyctbF7velsMZZeMZnk9CrDwUwAcYh6xIvmO7aAX0kwXh8/K8BWqL01nxinElsvacM3FUaPecjbWv7G6xCmbc6AttavgTnNBerZps+Ql4fvKKE/5KSjNxcBQ4mPDY0Zc8+bTBogoVxwI5UDodPtqoytk76d40qF//YY1Q68KLnZq8/QrQMrxq2S7PZaXloZkmATD9OqfGEhVokH1yJp0iv8L8Yvko+lqjXBsEBYOH1MtJ9o/ZI3cNp Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Let's just avoid another pair of ifdef inside a function. While at it, switch to INTERNODE_CACHE_BYTES by just defining a fallback in cache.h as well, given that the x86 variant already provides one. Acked-by: Oscar Salvador Reviewed-by: Lorenzo Stoakes (ARM) Reviewed-by: Mike Rapoport (Microsoft) Signed-off-by: David Hildenbrand (Arm) --- include/linux/cache.h | 1 + mm/sparse.c | 19 ++++++++++++------- 2 files changed, 13 insertions(+), 7 deletions(-) diff --git a/include/linux/cache.h b/include/linux/cache.h index e69768f50d532..b6e857b985bca 100644 --- a/include/linux/cache.h +++ b/include/linux/cache.h @@ -89,6 +89,7 @@ */ #ifndef INTERNODE_CACHE_SHIFT #define INTERNODE_CACHE_SHIFT L1_CACHE_SHIFT +#define INTERNODE_CACHE_BYTES (1 << INTERNODE_CACHE_SHIFT) #endif #if !defined(____cacheline_internodealigned_in_smp) diff --git a/mm/sparse.c b/mm/sparse.c index b75921c622ede..8cd2b06b231ac 100644 --- a/mm/sparse.c +++ b/mm/sparse.c @@ -103,11 +103,22 @@ int __meminit sparse_index_init(unsigned long section_nr, int nid) return 0; } + +static void __init sparse_extreme_init(void) +{ + const unsigned long size = sizeof(struct mem_section *) * NR_SECTION_ROOTS; + + mem_section = memblock_alloc_or_panic(size, INTERNODE_CACHE_BYTES); +} #else /* !SPARSEMEM_EXTREME */ int __meminit sparse_index_init(unsigned long section_nr, int nid) { return 0; } + +static void __init sparse_extreme_init(void) +{ +} #endif /* @@ -196,13 +207,7 @@ void __init sparse_sections_init(void) unsigned long start, end; int i, nid; -#ifdef CONFIG_SPARSEMEM_EXTREME - unsigned long size, align; - - size = sizeof(struct mem_section *) * NR_SECTION_ROOTS; - align = 1 << (INTERNODE_CACHE_SHIFT); - mem_section = memblock_alloc_or_panic(size, align); -#endif + sparse_extreme_init(); for_each_mem_pfn_range(i, MAX_NUMNODES, &start, &end, &nid) memory_present(nid, start, end); -- 2.43.0