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arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1721128578; cv=none; b=Tr0kutKaM40agz2SKjMg7Zv5gATMTqy+090cJrVj+ig55xYAfnck/x66DBdjhWIVAlLHnNSEaAuL10auBgpuTwTHvZCGLDWL/fyGw3mOb3N1dNxnMdPOfsnCJIgkaAYYDt3ovKLrg+l44LevJVL45D1UZJ5sl77NOF9ZqE2Y+Aw= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1721128578; c=relaxed/simple; bh=pogWMmbNnCcAMxEldEcXlIF7vDUNrHIph+oQnzUgBrk=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=RdCinDUgNEM7pnrNsYMZjcLQ13yCDx9B89zUM6IBQmcB/f/ergEr/HsI096ngHrSRkRtfyP58AejHLZcmyK2KHuwlatot/2e9ae+di8aWBn3IJVRRHghggcMtPbt5dr+pYGZZ2Mcey/rTKB6QHzKi0LIodU3CVEZafvJa46Og70= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=UcvrWWAI; arc=none smtp.client-ip=10.30.226.201 Received: by smtp.kernel.org (Postfix) with ESMTPSA id A6BC8C116B1; Tue, 16 Jul 2024 11:16:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1721128578; bh=pogWMmbNnCcAMxEldEcXlIF7vDUNrHIph+oQnzUgBrk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=UcvrWWAIQbl3FFQkfDjwC2SdD1OdneqblN/fQ+McWzxzpiNWnDEuI9INqZBpAUiac 6cze/XMRw+pLZ4RpU2ECWQrpk+CLidDE5AX+eHrTO5kadU806iGp54d1x8DcdIqAak OaJiemO15MxhvuILcxhfeq07xTV1zBzCf6S3KqDVt+de6AuFAb6RyJ4TN7GcMFCKcF gtVUKVzIzR3D82aMj/6b6KdPivX8HT+xAiJ4f11yrAK1uSHfpLcG5VF1udrExV7zca WxUdev+0YkrJeE+HKliTiulwlxpFHS2F+nSNa0TBGPk2fH9twhvAvopvHKQVL6T0Ua VX20PF/A97DQA== 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 13/17] mm: move numa_distance and related code from x86 to numa_memblks Date: Tue, 16 Jul 2024 14:13:42 +0300 Message-ID: <20240716111346.3676969-14-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: sparclinux@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: "Mike Rapoport (Microsoft)" Move code dealing with numa_distance array from arch/x86 to mm/numa_memblks.c This code will be later reused by arch_numa. No functional changes. Signed-off-by: Mike Rapoport (Microsoft) --- arch/x86/mm/numa.c | 101 --------------------------- arch/x86/mm/numa_internal.h | 2 - include/linux/numa_memblks.h | 4 ++ {arch/x86/mm => mm}/numa_emulation.c | 0 mm/numa_memblks.c | 101 +++++++++++++++++++++++++++ 5 files changed, 105 insertions(+), 103 deletions(-) rename {arch/x86/mm => mm}/numa_emulation.c (100%) diff --git a/arch/x86/mm/numa.c b/arch/x86/mm/numa.c index 8bc0b34c6ea2..3848e68d771a 100644 --- a/arch/x86/mm/numa.c +++ b/arch/x86/mm/numa.c @@ -24,9 +24,6 @@ int numa_off; -static int numa_distance_cnt; -static u8 *numa_distance; - static __init int numa_setup(char *opt) { if (!opt) @@ -118,104 +115,6 @@ void __init setup_node_to_cpumask_map(void) pr_debug("Node to cpumask map for %u nodes\n", nr_node_ids); } -/** - * numa_reset_distance - Reset NUMA distance table - * - * The current table is freed. The next numa_set_distance() call will - * create a new one. - */ -void __init numa_reset_distance(void) -{ - size_t size = numa_distance_cnt * numa_distance_cnt * sizeof(numa_distance[0]); - - if (numa_distance) - memblock_free(numa_distance, size); - numa_distance_cnt = 0; - numa_distance = NULL; /* enable table creation */ -} - -static int __init numa_alloc_distance(void) -{ - nodemask_t nodes_parsed; - size_t size; - int i, j, cnt = 0; - - /* size the new table and allocate it */ - nodes_parsed = numa_nodes_parsed; - numa_nodemask_from_meminfo(&nodes_parsed, &numa_meminfo); - - for_each_node_mask(i, nodes_parsed) - cnt = i; - cnt++; - size = cnt * cnt * sizeof(numa_distance[0]); - - numa_distance = memblock_alloc(size, PAGE_SIZE); - if (!numa_distance) { - pr_warn("Warning: can't allocate distance table!\n"); - return -ENOMEM; - } - - numa_distance_cnt = cnt; - - /* fill with the default distances */ - for (i = 0; i < cnt; i++) - for (j = 0; j < cnt; j++) - numa_distance[i * cnt + j] = i == j ? - LOCAL_DISTANCE : REMOTE_DISTANCE; - printk(KERN_DEBUG "NUMA: Initialized distance table, cnt=%d\n", cnt); - - return 0; -} - -/** - * numa_set_distance - Set NUMA distance from one NUMA to another - * @from: the 'from' node to set distance - * @to: the 'to' node to set distance - * @distance: NUMA distance - * - * Set the distance from node @from to @to to @distance. If distance table - * doesn't exist, one which is large enough to accommodate all the currently - * known nodes will be created. - * - * If such table cannot be allocated, a warning is printed and further - * calls are ignored until the distance table is reset with - * numa_reset_distance(). - * - * If @from or @to is higher than the highest known node or lower than zero - * at the time of table creation or @distance doesn't make sense, the call - * is ignored. - * This is to allow simplification of specific NUMA config implementations. - */ -void __init numa_set_distance(int from, int to, int distance) -{ - if (!numa_distance && numa_alloc_distance() < 0) - return; - - if (from >= numa_distance_cnt || to >= numa_distance_cnt || - from < 0 || to < 0) { - pr_warn_once("Warning: node ids are out of bound, from=%d to=%d distance=%d\n", - from, to, distance); - return; - } - - if ((u8)distance != distance || - (from == to && distance != LOCAL_DISTANCE)) { - pr_warn_once("Warning: invalid distance parameter, from=%d to=%d distance=%d\n", - from, to, distance); - return; - } - - numa_distance[from * numa_distance_cnt + to] = distance; -} - -int __node_distance(int from, int to) -{ - if (from >= numa_distance_cnt || to >= numa_distance_cnt) - return from == to ? LOCAL_DISTANCE : REMOTE_DISTANCE; - return numa_distance[from * numa_distance_cnt + to]; -} -EXPORT_SYMBOL(__node_distance); - static int __init numa_register_memblks(struct numa_meminfo *mi) { int i, nid, err; diff --git a/arch/x86/mm/numa_internal.h b/arch/x86/mm/numa_internal.h index a51229a2f5af..249e3aaeadce 100644 --- a/arch/x86/mm/numa_internal.h +++ b/arch/x86/mm/numa_internal.h @@ -5,8 +5,6 @@ #include #include -void __init numa_reset_distance(void); - void __init x86_numa_init(void); struct numa_meminfo; diff --git a/include/linux/numa_memblks.h b/include/linux/numa_memblks.h index 6981cf97d2c9..968a590535ac 100644 --- a/include/linux/numa_memblks.h +++ b/include/linux/numa_memblks.h @@ -7,6 +7,10 @@ #define NR_NODE_MEMBLKS (MAX_NUMNODES * 2) +extern int numa_distance_cnt; +void __init numa_set_distance(int from, int to, int distance); +void __init numa_reset_distance(void); + struct numa_memblk { u64 start; u64 end; diff --git a/arch/x86/mm/numa_emulation.c b/mm/numa_emulation.c similarity index 100% rename from arch/x86/mm/numa_emulation.c rename to mm/numa_emulation.c diff --git a/mm/numa_memblks.c b/mm/numa_memblks.c index e31307317ca7..e0039549aaac 100644 --- a/mm/numa_memblks.c +++ b/mm/numa_memblks.c @@ -7,11 +7,112 @@ #include #include +int numa_distance_cnt; +static u8 *numa_distance; + nodemask_t numa_nodes_parsed __initdata; struct numa_meminfo numa_meminfo __initdata_or_meminfo; struct numa_meminfo numa_reserved_meminfo __initdata_or_meminfo; +/** + * numa_reset_distance - Reset NUMA distance table + * + * The current table is freed. The next numa_set_distance() call will + * create a new one. + */ +void __init numa_reset_distance(void) +{ + size_t size = numa_distance_cnt * numa_distance_cnt * sizeof(numa_distance[0]); + + if (numa_distance) + memblock_free(numa_distance, size); + numa_distance_cnt = 0; + numa_distance = NULL; /* enable table creation */ +} + +static int __init numa_alloc_distance(void) +{ + nodemask_t nodes_parsed; + size_t size; + int i, j, cnt = 0; + + /* size the new table and allocate it */ + nodes_parsed = numa_nodes_parsed; + numa_nodemask_from_meminfo(&nodes_parsed, &numa_meminfo); + + for_each_node_mask(i, nodes_parsed) + cnt = i; + cnt++; + size = cnt * cnt * sizeof(numa_distance[0]); + + numa_distance = memblock_alloc(size, PAGE_SIZE); + if (!numa_distance) { + pr_warn("Warning: can't allocate distance table!\n"); + return -ENOMEM; + } + + numa_distance_cnt = cnt; + + /* fill with the default distances */ + for (i = 0; i < cnt; i++) + for (j = 0; j < cnt; j++) + numa_distance[i * cnt + j] = i == j ? + LOCAL_DISTANCE : REMOTE_DISTANCE; + printk(KERN_DEBUG "NUMA: Initialized distance table, cnt=%d\n", cnt); + + return 0; +} + +/** + * numa_set_distance - Set NUMA distance from one NUMA to another + * @from: the 'from' node to set distance + * @to: the 'to' node to set distance + * @distance: NUMA distance + * + * Set the distance from node @from to @to to @distance. If distance table + * doesn't exist, one which is large enough to accommodate all the currently + * known nodes will be created. + * + * If such table cannot be allocated, a warning is printed and further + * calls are ignored until the distance table is reset with + * numa_reset_distance(). + * + * If @from or @to is higher than the highest known node or lower than zero + * at the time of table creation or @distance doesn't make sense, the call + * is ignored. + * This is to allow simplification of specific NUMA config implementations. + */ +void __init numa_set_distance(int from, int to, int distance) +{ + if (!numa_distance && numa_alloc_distance() < 0) + return; + + if (from >= numa_distance_cnt || to >= numa_distance_cnt || + from < 0 || to < 0) { + pr_warn_once("Warning: node ids are out of bound, from=%d to=%d distance=%d\n", + from, to, distance); + return; + } + + if ((u8)distance != distance || + (from == to && distance != LOCAL_DISTANCE)) { + pr_warn_once("Warning: invalid distance parameter, from=%d to=%d distance=%d\n", + from, to, distance); + return; + } + + numa_distance[from * numa_distance_cnt + to] = distance; +} + +int __node_distance(int from, int to) +{ + if (from >= numa_distance_cnt || to >= numa_distance_cnt) + return from == to ? LOCAL_DISTANCE : REMOTE_DISTANCE; + return numa_distance[from * numa_distance_cnt + to]; +} +EXPORT_SYMBOL(__node_distance); + static int __init numa_add_memblk_to(int nid, u64 start, u64 end, struct numa_meminfo *mi) {