From nobody Wed Dec 17 17:23:52 2025 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 A0A6519922C; Tue, 16 Jul 2024 11:16:38 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1721128598; cv=none; b=b/50VNCqoC00UGGnJxjlfJLOz3ANgNJ1CRLwX03s+n27kIsHvcOcv1I+N4tCAfLIsCnED/uy/xnMddwFMsTwHWO7ipfKAT6PoYbJZBwk7mZkqg/nPJRFnstlENvwxqhs56Sq1hxsqB0tqldY+KVGFibfg4pbaNB+el4634oE20U= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1721128598; c=relaxed/simple; bh=7Q9+Mq1OzbCzQ3l6qZ8hFadj8WwRPzHvJheGL7bczxA=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=tdM6HS/TfJJYcX5CtCbHOPV3qPvsJhWoNpYgxKxezITyKoZJTJ1/HFPjeIUw+bKHNxNKJlDhWd11ojS+gQvzAY9rqMfKJfuzDrdrqgbCV1yycV7lOxW+NvDoC41VzJ9krjk+59xul19EaRfseQ8k8RpNvWeZAukoUWeG1QKNgF4= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=DR/UKOJ/; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="DR/UKOJ/" Received: by smtp.kernel.org (Postfix) with ESMTPSA id E4143C116B1; Tue, 16 Jul 2024 11:16:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1721128598; bh=7Q9+Mq1OzbCzQ3l6qZ8hFadj8WwRPzHvJheGL7bczxA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=DR/UKOJ/h4uG7SYpNzlc2X9CWTUegBVq7/FEDSICT5v7b5oob5MruZ1Km9M+sBk9w CrSZGTKrdq+1umF3gBmMGFcaZCoC89EDdmv5WrJaNrdVnw4l1yMWg59lcltDPFCz1C c8WIvtqlHUvYvghfdoL+3hTZwAkV1bCk5YQWIGnPNU+6jfjgj4LABXzboYg8GzruEv 7bQ8ryZxvJODCU7frKDMJK8TrhBuw74SWFDmRevbWL2HWc9qWBEUfYl8qlYurs2SfG lMCnTuVPllpeAO8ytYEKcrt5eEcNZcGUU9XEKzAjRzy1dM1dHsXD2cV4R1kri25vkc +ode6C8uopYbw== From: Mike Rapoport To: linux-kernel@vger.kernel.org Cc: Alexander Gordeev , Andreas Larsson , Andrew Morton , Arnd Bergmann , Borislav Petkov , Catalin Marinas , Christophe Leroy , Dan Williams , Dave Hansen , David Hildenbrand , "David S. Miller" , Greg Kroah-Hartman , Heiko Carstens , Huacai Chen , Ingo Molnar , Jiaxun Yang , John Paul Adrian Glaubitz , Jonathan Cameron , Michael Ellerman , Mike Rapoport , Palmer Dabbelt , "Rafael J. Wysocki" , Rob Herring , Thomas Bogendoerfer , Thomas Gleixner , Vasily Gorbik , Will Deacon , linux-arm-kernel@lists.infradead.org, loongarch@lists.linux.dev, linux-mips@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org, linux-sh@vger.kernel.org, sparclinux@vger.kernel.org, linux-acpi@vger.kernel.org, linux-cxl@vger.kernel.org, nvdimm@lists.linux.dev, devicetree@vger.kernel.org, linux-arch@vger.kernel.org, linux-mm@kvack.org, x86@kernel.org Subject: [PATCH 15/17] mm: make numa_memblks more self-contained Date: Tue, 16 Jul 2024 14:13:44 +0300 Message-ID: <20240716111346.3676969-16-rppt@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240716111346.3676969-1-rppt@kernel.org> References: <20240716111346.3676969-1-rppt@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: "Mike Rapoport (Microsoft)" Introduce numa_memblks_init() and move some code around to avoid several global variables in numa_memblks. Signed-off-by: Mike Rapoport (Microsoft) --- arch/x86/mm/numa.c | 53 ++++--------------------- include/linux/numa_memblks.h | 9 +---- mm/numa_memblks.c | 77 +++++++++++++++++++++++++++--------- 3 files changed, 68 insertions(+), 71 deletions(-) diff --git a/arch/x86/mm/numa.c b/arch/x86/mm/numa.c index 3848e68d771a..16bc703c9272 100644 --- a/arch/x86/mm/numa.c +++ b/arch/x86/mm/numa.c @@ -115,30 +115,19 @@ void __init setup_node_to_cpumask_map(void) pr_debug("Node to cpumask map for %u nodes\n", nr_node_ids); } =20 -static int __init numa_register_memblks(struct numa_meminfo *mi) +static int __init numa_register_nodes(void) { - int i, nid, err; - - err =3D numa_register_meminfo(mi); - if (err) - return err; + int nid; =20 if (!memblock_validate_numa_coverage(SZ_1M)) return -EINVAL; =20 /* Finally register nodes. */ for_each_node_mask(nid, node_possible_map) { - u64 start =3D PFN_PHYS(max_pfn); - u64 end =3D 0; - - for (i =3D 0; i < mi->nr_blks; i++) { - if (nid !=3D mi->blk[i].nid) - continue; - start =3D min(mi->blk[i].start, start); - end =3D max(mi->blk[i].end, end); - } + unsigned long start_pfn, end_pfn; =20 - if (start >=3D end) + get_pfn_range_for_nid(nid, &start_pfn, &end_pfn); + if (start_pfn >=3D end_pfn) continue; =20 alloc_node_data(nid); @@ -178,39 +167,11 @@ static int __init numa_init(int (*init_func)(void)) for (i =3D 0; i < MAX_LOCAL_APIC; i++) set_apicid_to_node(i, NUMA_NO_NODE); =20 - nodes_clear(numa_nodes_parsed); - nodes_clear(node_possible_map); - nodes_clear(node_online_map); - memset(&numa_meminfo, 0, sizeof(numa_meminfo)); - WARN_ON(memblock_set_node(0, ULLONG_MAX, &memblock.memory, - NUMA_NO_NODE)); - WARN_ON(memblock_set_node(0, ULLONG_MAX, &memblock.reserved, - NUMA_NO_NODE)); - /* In case that parsing SRAT failed. */ - WARN_ON(memblock_clear_hotplug(0, ULLONG_MAX)); - numa_reset_distance(); - - ret =3D init_func(); - if (ret < 0) - return ret; - - /* - * We reset memblock back to the top-down direction - * here because if we configured ACPI_NUMA, we have - * parsed SRAT in init_func(). It is ok to have the - * reset here even if we did't configure ACPI_NUMA - * or acpi numa init fails and fallbacks to dummy - * numa init. - */ - memblock_set_bottom_up(false); - - ret =3D numa_cleanup_meminfo(&numa_meminfo); + ret =3D numa_memblks_init(init_func, /* memblock_force_top_down */ true); if (ret < 0) return ret; =20 - numa_emulation(&numa_meminfo, numa_distance_cnt); - - ret =3D numa_register_memblks(&numa_meminfo); + ret =3D numa_register_nodes(); if (ret < 0) return ret; =20 diff --git a/include/linux/numa_memblks.h b/include/linux/numa_memblks.h index f81f98678074..5c6e12ad0b7a 100644 --- a/include/linux/numa_memblks.h +++ b/include/linux/numa_memblks.h @@ -7,7 +7,6 @@ =20 #define NR_NODE_MEMBLKS (MAX_NUMNODES * 2) =20 -extern int numa_distance_cnt; void __init numa_set_distance(int from, int to, int distance); void __init numa_reset_distance(void); =20 @@ -22,17 +21,13 @@ struct numa_meminfo { struct numa_memblk blk[NR_NODE_MEMBLKS]; }; =20 -extern struct numa_meminfo numa_meminfo __initdata_or_meminfo; -extern struct numa_meminfo numa_reserved_meminfo __initdata_or_meminfo; - int __init numa_add_memblk(int nodeid, u64 start, u64 end); void __init numa_remove_memblk_from(int idx, struct numa_meminfo *mi); =20 int __init numa_cleanup_meminfo(struct numa_meminfo *mi); -int __init numa_register_meminfo(struct numa_meminfo *mi); =20 -void __init numa_nodemask_from_meminfo(nodemask_t *nodemask, - const struct numa_meminfo *mi); +int __init numa_memblks_init(int (*init_func)(void), + bool memblock_force_top_down); =20 #ifdef CONFIG_NUMA_EMU int numa_emu_cmdline(char *str); diff --git a/mm/numa_memblks.c b/mm/numa_memblks.c index e0039549aaac..640f3a3ce0ee 100644 --- a/mm/numa_memblks.c +++ b/mm/numa_memblks.c @@ -7,13 +7,27 @@ #include #include =20 -int numa_distance_cnt; +static int numa_distance_cnt; static u8 *numa_distance; =20 nodemask_t numa_nodes_parsed __initdata; =20 -struct numa_meminfo numa_meminfo __initdata_or_meminfo; -struct numa_meminfo numa_reserved_meminfo __initdata_or_meminfo; +static struct numa_meminfo numa_meminfo __initdata_or_meminfo; +static struct numa_meminfo numa_reserved_meminfo __initdata_or_meminfo; + +/* + * Set nodes, which have memory in @mi, in *@nodemask. + */ +static void __init numa_nodemask_from_meminfo(nodemask_t *nodemask, + const struct numa_meminfo *mi) +{ + int i; + + for (i =3D 0; i < ARRAY_SIZE(mi->blk); i++) + if (mi->blk[i].start !=3D mi->blk[i].end && + mi->blk[i].nid !=3D NUMA_NO_NODE) + node_set(mi->blk[i].nid, *nodemask); +} =20 /** * numa_reset_distance - Reset NUMA distance table @@ -287,20 +301,6 @@ int __init numa_cleanup_meminfo(struct numa_meminfo *m= i) return 0; } =20 -/* - * Set nodes, which have memory in @mi, in *@nodemask. - */ -void __init numa_nodemask_from_meminfo(nodemask_t *nodemask, - const struct numa_meminfo *mi) -{ - int i; - - for (i =3D 0; i < ARRAY_SIZE(mi->blk); i++) - if (mi->blk[i].start !=3D mi->blk[i].end && - mi->blk[i].nid !=3D NUMA_NO_NODE) - node_set(mi->blk[i].nid, *nodemask); -} - /* * Mark all currently memblock-reserved physical memory (which covers the * kernel's own memory ranges) as hot-unswappable. @@ -368,7 +368,7 @@ static void __init numa_clear_kernel_node_hotplug(void) } } =20 -int __init numa_register_meminfo(struct numa_meminfo *mi) +static int __init numa_register_meminfo(struct numa_meminfo *mi) { int i; =20 @@ -412,6 +412,47 @@ int __init numa_register_meminfo(struct numa_meminfo *= mi) return 0; } =20 +int __init numa_memblks_init(int (*init_func)(void), + bool memblock_force_top_down) +{ + int ret; + + nodes_clear(numa_nodes_parsed); + nodes_clear(node_possible_map); + nodes_clear(node_online_map); + memset(&numa_meminfo, 0, sizeof(numa_meminfo)); + WARN_ON(memblock_set_node(0, ULLONG_MAX, &memblock.memory, + NUMA_NO_NODE)); + WARN_ON(memblock_set_node(0, ULLONG_MAX, &memblock.reserved, + NUMA_NO_NODE)); + /* In case that parsing SRAT failed. */ + WARN_ON(memblock_clear_hotplug(0, ULLONG_MAX)); + numa_reset_distance(); + + ret =3D init_func(); + if (ret < 0) + return ret; + + /* + * We reset memblock back to the top-down direction + * here because if we configured ACPI_NUMA, we have + * parsed SRAT in init_func(). It is ok to have the + * reset here even if we did't configure ACPI_NUMA + * or acpi numa init fails and fallbacks to dummy + * numa init. + */ + if (memblock_force_top_down) + memblock_set_bottom_up(false); + + ret =3D numa_cleanup_meminfo(&numa_meminfo); + if (ret < 0) + return ret; + + numa_emulation(&numa_meminfo, numa_distance_cnt); + + return numa_register_meminfo(&numa_meminfo); +} + static int __init cmp_memblk(const void *a, const void *b) { const struct numa_memblk *ma =3D *(const struct numa_memblk **)a; --=20 2.43.0