From patchwork Wed Aug 19 14:51:06 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jonathan Cameron X-Patchwork-Id: 247962 Delivered-To: patch@linaro.org Received: by 2002:a05:6e02:522:0:0:0:0 with SMTP id h2csp534202ils; Wed, 19 Aug 2020 07:53:13 -0700 (PDT) X-Google-Smtp-Source: ABdhPJyvrXqcjlJ3USKYpu5CK9df7+zyU6b4GwSCTnLpHBDqbTa8l99NPrBbvzbxd7zWDu7bLlmJ X-Received: by 2002:a17:906:228a:: with SMTP id p10mr25200647eja.23.1597848793389; Wed, 19 Aug 2020 07:53:13 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1597848793; cv=none; d=google.com; s=arc-20160816; b=z91MjDuTjVxtrARlPBn95AO5oLG3pZaEK+Cd9sLhF+xQvfA8mNZJdOkaJTpkXcPzu3 Pm+8qQVWN/tDkNhZYIT+hxZjGv3WC+2pMqSSI1JkcXmUNBzwhjEw9iwIHkM5YxcC+45A NKLyG+UJaW1Jt++3b6gwj4zeoWXxUgRFoWWHQp/U5NCDuGHYgfZZhCG5v/iWIZM21m4n Iw+5xfYgmca1IsxkzXejqt4HyNL6YxnawgzM/darvYyqX2p49tMdgaII19V23GySIJEQ QUjAgS6bJKco3icgW+h0YuRf+n9FBfQVo6SFXQMBlySMmVIyJzOG21neU8O4s3m7Fe8z UTFg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from; bh=KvTY8Dj5PYOEGGZntMTJIL6k7d4TKtmjpwJGehXTlLk=; b=T9VpxmZLKloHm9rOKd4USi7OJVjJ86l7+KBUAYKOzCW5lHlFiVnrcUIiB4GeecKxCX NVdBXVXJxzctYO4AMbPeqp/9YVo7CT8eclTqANznBaTOB8acXb9RATEUOyTiZjDul1rI MCOOjsBFQisrxldFzZI2QJof80V/Gh/7SEmbNmSooCL57uJmQx6+NKGapGNX5bq8uxmT Cjzy5XRvpLqVv2ZR/zhssv4z7bjFFO4gcUG/WzniO1R18XuBAnazv1phHCGLPz+KeV/G XAlCVRjgemu2+Sw4DpUSQUst9NvtaN8ccduUy4/eNxqtNbyEHeQK8xZ9TdcnU7qm7Quk 0AeA== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-acpi-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-acpi-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id ks17si15859524ejb.204.2020.08.19.07.53.13; Wed, 19 Aug 2020 07:53:13 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-acpi-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-acpi-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-acpi-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727975AbgHSOxM (ORCPT + 7 others); Wed, 19 Aug 2020 10:53:12 -0400 Received: from lhrrgout.huawei.com ([185.176.76.210]:2668 "EHLO huawei.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1727018AbgHSOxL (ORCPT ); Wed, 19 Aug 2020 10:53:11 -0400 Received: from lhreml710-chm.china.huawei.com (unknown [172.18.7.108]) by Forcepoint Email with ESMTP id EE166AAB4A298C799F77; Wed, 19 Aug 2020 15:53:09 +0100 (IST) Received: from lhrphicprd00229.huawei.com (10.123.41.22) by lhreml710-chm.china.huawei.com (10.201.108.61) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1913.5; Wed, 19 Aug 2020 15:53:09 +0100 From: Jonathan Cameron To: , , , CC: Lorenzo Pieralisi , Bjorn Helgaas , , , Ingo Molnar , Thomas Gleixner , , Dan Williams , Brice Goglin , Sean V Kelley , , Jonathan Cameron Subject: [PATCH v9 1/6] ACPI: Support Generic Initiator only domains Date: Wed, 19 Aug 2020 22:51:06 +0800 Message-ID: <20200819145111.1715026-2-Jonathan.Cameron@huawei.com> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20200819145111.1715026-1-Jonathan.Cameron@huawei.com> References: <20200819145111.1715026-1-Jonathan.Cameron@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.123.41.22] X-ClientProxiedBy: lhreml741-chm.china.huawei.com (10.201.108.191) To lhreml710-chm.china.huawei.com (10.201.108.61) X-CFilter-Loop: Reflected Sender: linux-acpi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org Generic Initiators are a new ACPI concept that allows for the description of proximity domains that contain a device which performs memory access (such as a network card) but neither host CPU nor Memory. This patch has the parsing code and provides the infrastructure for an architecture to associate these new domains with their nearest memory processing node. Signed-off-by: Jonathan Cameron --- drivers/acpi/numa/srat.c | 69 +++++++++++++++++++++++++++++++++++++++- drivers/base/node.c | 3 ++ include/linux/nodemask.h | 1 + 3 files changed, 72 insertions(+), 1 deletion(-) -- 2.19.1 diff --git a/drivers/acpi/numa/srat.c b/drivers/acpi/numa/srat.c index 15bbaab8500b..d27e8585132d 100644 --- a/drivers/acpi/numa/srat.c +++ b/drivers/acpi/numa/srat.c @@ -130,6 +130,36 @@ acpi_table_print_srat_entry(struct acpi_subtable_header *header) } break; + case ACPI_SRAT_TYPE_GENERIC_AFFINITY: + { + struct acpi_srat_generic_affinity *p = + (struct acpi_srat_generic_affinity *)header; + + if (p->device_handle_type == 0) { + /* + * For pci devices this may be the only place they + * are assigned a proximity domain + */ + pr_debug("SRAT Generic Initiator(Seg:%u BDF:%u) in proximity domain %d %s\n", + *(u16 *)(&p->device_handle[0]), + *(u16 *)(&p->device_handle[2]), + p->proximity_domain, + (p->flags & ACPI_SRAT_GENERIC_AFFINITY_ENABLED) ? + "enabled" : "disabled"); + } else { + /* + * In this case we can rely on the device having a + * proximity domain reference + */ + pr_debug("SRAT Generic Initiator(HID=%.8s UID=%.4s) in proximity domain %d %s\n", + (char *)(&p->device_handle[0]), + (char *)(&p->device_handle[8]), + p->proximity_domain, + (p->flags & ACPI_SRAT_GENERIC_AFFINITY_ENABLED) ? + "enabled" : "disabled"); + } + } + break; default: pr_warn("Found unsupported SRAT entry (type = 0x%x)\n", header->type); @@ -332,6 +362,41 @@ acpi_parse_gicc_affinity(union acpi_subtable_headers *header, return 0; } +#if defined(CONFIG_X86) || defined(CONFIG_ARM64) +static int __init +acpi_parse_gi_affinity(union acpi_subtable_headers *header, + const unsigned long end) +{ + struct acpi_srat_generic_affinity *gi_affinity; + int node; + + gi_affinity = (struct acpi_srat_generic_affinity *)header; + if (!gi_affinity) + return -EINVAL; + acpi_table_print_srat_entry(&header->common); + + if (!(gi_affinity->flags & ACPI_SRAT_GENERIC_AFFINITY_ENABLED)) + return -EINVAL; + + node = acpi_map_pxm_to_node(gi_affinity->proximity_domain); + if (node == NUMA_NO_NODE || node >= MAX_NUMNODES) { + pr_err("SRAT: Too many proximity domains.\n"); + return -EINVAL; + } + node_set(node, numa_nodes_parsed); + node_set_state(node, N_GENERIC_INITIATOR); + + return 0; +} +#else +static int __init +acpi_parse_gi_affinity(union acpi_subtable_headers *header, + const unsigned long end) +{ + return 0; +} +#endif /* defined(CONFIG_X86) || defined (CONFIG_ARM64) */ + static int __initdata parsed_numa_memblks; static int __init @@ -385,7 +450,7 @@ int __init acpi_numa_init(void) /* SRAT: System Resource Affinity Table */ if (!acpi_table_parse(ACPI_SIG_SRAT, acpi_parse_srat)) { - struct acpi_subtable_proc srat_proc[3]; + struct acpi_subtable_proc srat_proc[4]; memset(srat_proc, 0, sizeof(srat_proc)); srat_proc[0].id = ACPI_SRAT_TYPE_CPU_AFFINITY; @@ -394,6 +459,8 @@ int __init acpi_numa_init(void) srat_proc[1].handler = acpi_parse_x2apic_affinity; srat_proc[2].id = ACPI_SRAT_TYPE_GICC_AFFINITY; srat_proc[2].handler = acpi_parse_gicc_affinity; + srat_proc[3].id = ACPI_SRAT_TYPE_GENERIC_AFFINITY; + srat_proc[3].handler = acpi_parse_gi_affinity; acpi_table_parse_entries_array(ACPI_SIG_SRAT, sizeof(struct acpi_table_srat), diff --git a/drivers/base/node.c b/drivers/base/node.c index 508b80f6329b..53383f1f683c 100644 --- a/drivers/base/node.c +++ b/drivers/base/node.c @@ -980,6 +980,8 @@ static struct node_attr node_state_attr[] = { #endif [N_MEMORY] = _NODE_ATTR(has_memory, N_MEMORY), [N_CPU] = _NODE_ATTR(has_cpu, N_CPU), + [N_GENERIC_INITIATOR] = _NODE_ATTR(has_generic_initiator, + N_GENERIC_INITIATOR), }; static struct attribute *node_state_attrs[] = { @@ -991,6 +993,7 @@ static struct attribute *node_state_attrs[] = { #endif &node_state_attr[N_MEMORY].attr.attr, &node_state_attr[N_CPU].attr.attr, + &node_state_attr[N_GENERIC_INITIATOR].attr.attr, NULL }; diff --git a/include/linux/nodemask.h b/include/linux/nodemask.h index 27e7fa36f707..3334ce056335 100644 --- a/include/linux/nodemask.h +++ b/include/linux/nodemask.h @@ -399,6 +399,7 @@ enum node_states { #endif N_MEMORY, /* The node has memory(regular, high, movable) */ N_CPU, /* The node has one or more cpus */ + N_GENERIC_INITIATOR, /* The node has one or more Generic Initiators */ NR_NODE_STATES }; From patchwork Wed Aug 19 14:51:07 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jonathan Cameron X-Patchwork-Id: 247963 Delivered-To: patch@linaro.org Received: by 2002:a05:6e02:522:0:0:0:0 with SMTP id h2csp534611ils; Wed, 19 Aug 2020 07:53:50 -0700 (PDT) X-Google-Smtp-Source: ABdhPJzdX2TMF6oI2KgvT9FcsG+dHavSivsQeDhtSFuVnk/Z8R6t5BSfKWuPPCPaQal/ywGBHpCX X-Received: by 2002:a17:907:b0b:: with SMTP id h11mr26901888ejl.371.1597848830814; Wed, 19 Aug 2020 07:53:50 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1597848830; cv=none; d=google.com; s=arc-20160816; b=s7V8lLzvuH75G9Yxk5Q4GAMP6QNKqAcsVGXlD8UP5+2FqvtxFfl6scBva0tfs+siPv YdTz6HjDjYlqzIyaYHKwekdPzU2MYluKZhsbiTZz7UdMybmwr1SD0w/bisjLF7gLd498 X6Z0SUyslF8hoBFramo+3InYHFuCUSDmKvttAgmNa+JjeucgBSHVLOk5mRPPIVmexqmf FczXgmGGw1IP4FIFf8KMRd8dz2MqQSej6nepF4/alYCq6VAlf/NhebRuF0tVH/5//1qY AV7nrJmkNFE6xbrFaO6Ls1qCg9yLL08ye28pIz1b6+OAC6SiE+0tGUkgOiPmeku1w9/5 nP6A== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from; bh=zQvcCDTuChWqKdR57McVWcECXFBhExGQLCMNAFrLOv0=; b=RCSOgE/f0uUf02E+TqFQHSt57D56jwXwDJGsprLVBB6+iZkJstq0zRJOD5xmp2l5UP hX+dRtwkp3YoC/l0c6J/JDCNqWgk45J2VeUMg5mzKwsQwUcPn4bSL39EJOn0YKU/M9Tl J4eEvsFg98NpQBkOnKe/ZT4Ox2IBhkaliniXi1kES7+ALzp4EengJBpffCfmSyxv2+bi uTrHF2Jr7zLxTkp2a0/LbBS1d33WFVUEN8G5+FOjrRgpkfOx++hTF01YttnDKHeC6T59 EkgTy628g02rEz78rizoGc754jbvET4VuTI1aPv0YIlF0GlLXbNyRt5faswaTCbpDt0G Ijng== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-acpi-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-acpi-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id c38si16528911edf.153.2020.08.19.07.53.50; Wed, 19 Aug 2020 07:53:50 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-acpi-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-acpi-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-acpi-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728145AbgHSOxn (ORCPT + 7 others); Wed, 19 Aug 2020 10:53:43 -0400 Received: from lhrrgout.huawei.com ([185.176.76.210]:2669 "EHLO huawei.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726899AbgHSOxm (ORCPT ); Wed, 19 Aug 2020 10:53:42 -0400 Received: from lhreml710-chm.china.huawei.com (unknown [172.18.7.108]) by Forcepoint Email with ESMTP id 6A017F2C2594C9A58F9A; Wed, 19 Aug 2020 15:53:40 +0100 (IST) Received: from lhrphicprd00229.huawei.com (10.123.41.22) by lhreml710-chm.china.huawei.com (10.201.108.61) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1913.5; Wed, 19 Aug 2020 15:53:40 +0100 From: Jonathan Cameron To: , , , CC: Lorenzo Pieralisi , Bjorn Helgaas , , , Ingo Molnar , Thomas Gleixner , , Dan Williams , Brice Goglin , Sean V Kelley , , Jonathan Cameron Subject: [PATCH v9 2/6] x86: Support Generic Initiator only proximity domains Date: Wed, 19 Aug 2020 22:51:07 +0800 Message-ID: <20200819145111.1715026-3-Jonathan.Cameron@huawei.com> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20200819145111.1715026-1-Jonathan.Cameron@huawei.com> References: <20200819145111.1715026-1-Jonathan.Cameron@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.123.41.22] X-ClientProxiedBy: lhreml741-chm.china.huawei.com (10.201.108.191) To lhreml710-chm.china.huawei.com (10.201.108.61) X-CFilter-Loop: Reflected Sender: linux-acpi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org In common with memoryless domains we only register GI domains if the proximity node is not online. If a domain is already a memory containing domain, or a memoryless domain there is nothing to do just because it also contains a Generic Initiator. Signed-off-by: Jonathan Cameron --- arch/x86/include/asm/numa.h | 2 ++ arch/x86/kernel/setup.c | 1 + arch/x86/mm/numa.c | 14 ++++++++++++++ 3 files changed, 17 insertions(+) -- 2.19.1 diff --git a/arch/x86/include/asm/numa.h b/arch/x86/include/asm/numa.h index bbfde3d2662f..f631467272a3 100644 --- a/arch/x86/include/asm/numa.h +++ b/arch/x86/include/asm/numa.h @@ -62,12 +62,14 @@ extern void numa_clear_node(int cpu); extern void __init init_cpu_to_node(void); extern void numa_add_cpu(int cpu); extern void numa_remove_cpu(int cpu); +extern void init_gi_nodes(void); #else /* CONFIG_NUMA */ static inline void numa_set_node(int cpu, int node) { } static inline void numa_clear_node(int cpu) { } static inline void init_cpu_to_node(void) { } static inline void numa_add_cpu(int cpu) { } static inline void numa_remove_cpu(int cpu) { } +static inline void init_gi_nodes(void) { } #endif /* CONFIG_NUMA */ #ifdef CONFIG_DEBUG_PER_CPU_MAPS diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c index 3511736fbc74..9062c146f03a 100644 --- a/arch/x86/kernel/setup.c +++ b/arch/x86/kernel/setup.c @@ -1218,6 +1218,7 @@ void __init setup_arch(char **cmdline_p) prefill_possible_map(); init_cpu_to_node(); + init_gi_nodes(); io_apic_init_mappings(); diff --git a/arch/x86/mm/numa.c b/arch/x86/mm/numa.c index aa76ec2d359b..fc630dc6764e 100644 --- a/arch/x86/mm/numa.c +++ b/arch/x86/mm/numa.c @@ -747,6 +747,20 @@ static void __init init_memory_less_node(int nid) */ } +/* + * Generic Initiator Nodes may have neither CPU nor Memory. + * At this stage if either of the others were present we would + * already be online. + */ +void __init init_gi_nodes(void) +{ + int nid; + + for_each_node_state(nid, N_GENERIC_INITIATOR) + if (!node_online(nid)) + init_memory_less_node(nid); +} + /* * Setup early cpu_to_node. * From patchwork Wed Aug 19 14:51:08 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jonathan Cameron X-Patchwork-Id: 247964 Delivered-To: patch@linaro.org Received: by 2002:a05:6e02:522:0:0:0:0 with SMTP id h2csp534985ils; Wed, 19 Aug 2020 07:54:19 -0700 (PDT) X-Google-Smtp-Source: ABdhPJweJIPTl0OJS79sSgIsTnvVemuae+HN0AxWhrSaEO3eT4LrngMwP5jKg81PJ63HMo5eA08z X-Received: by 2002:aa7:d45a:: with SMTP id q26mr24409173edr.95.1597848859714; Wed, 19 Aug 2020 07:54:19 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1597848859; cv=none; d=google.com; s=arc-20160816; b=k+k6Pc2w3ne+d4UvvgviDKrH5wgvmz8WLsQ+MLKM+jv4LFzwcSLU4qxsNY0CzrY7kP 4F4ajxh9lPF69tbS89wYrGb7cTyf6IjNO72X1hxUq0tUckUIXRDiCOzWNEfqKaex5t6j Ms24gcCGrbYBTHz1URnuwIGCq9xFO9VOdh7++ci4Qxh9cKpXvov6xwDEnk9O8YIPDfML JbFvDHm4Cpk5G+gSFwVkW2ZRsD3Jjva+ihgg/EANdO9rR89he0z46Sys56+WWtowHflq 9P+byMOlSm5+xJhUhtcgNK8QMESoo30GISEF0cqIyCWxyN3NQe3MRLrCNriJSiRy4E3y O3iw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from; bh=gPv4NqJXkN1t4/asyK10JyW0MG7CuHU7pT6soeybAdc=; b=1BxmyRyU3ZW2OHh712uTJTuXPVMYkDbc4Ads4H9Kifc47sOzvn+45eFJQi+brxneYC 1Qg0NDz9frEwisf5gEXENWT2iFU9PTUaQDUV6UeJhVNPjYcAXU4dK8cTyyrWNNs2vIbD Mhm6ZMyI49hBr5bw7Kd9V1ZULMsdw86GplGX/5Xx06RkWDe+kpzNBTUt3wXcr9CVsthR qw56mPCAkyK16h9/SUfKchZuwDfww2oU2/EOPGDWjbcRY17RSVH3jdi4BcppG//GhJpN 11T3pkZwQ4CWlYxwkMDqAbbIyQCG9150SBn7jg5mXEss7N4n4OKK4wyUpsTGcZaMQgSY 6CSQ== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-acpi-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-acpi-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id y12si15992716ejl.170.2020.08.19.07.54.19; Wed, 19 Aug 2020 07:54:19 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-acpi-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-acpi-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-acpi-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726899AbgHSOyP (ORCPT + 7 others); Wed, 19 Aug 2020 10:54:15 -0400 Received: from lhrrgout.huawei.com ([185.176.76.210]:2670 "EHLO huawei.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1727827AbgHSOyO (ORCPT ); Wed, 19 Aug 2020 10:54:14 -0400 Received: from lhreml710-chm.china.huawei.com (unknown [172.18.7.107]) by Forcepoint Email with ESMTP id EE949EF2673380C58CC7; Wed, 19 Aug 2020 15:54:12 +0100 (IST) Received: from lhrphicprd00229.huawei.com (10.123.41.22) by lhreml710-chm.china.huawei.com (10.201.108.61) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1913.5; Wed, 19 Aug 2020 15:54:10 +0100 From: Jonathan Cameron To: , , , CC: Lorenzo Pieralisi , Bjorn Helgaas , , , Ingo Molnar , Thomas Gleixner , , Dan Williams , Brice Goglin , Sean V Kelley , , Jonathan Cameron Subject: [PATCH v9 3/6] ACPI: Let ACPI know we support Generic Initiator Affinity Structures Date: Wed, 19 Aug 2020 22:51:08 +0800 Message-ID: <20200819145111.1715026-4-Jonathan.Cameron@huawei.com> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20200819145111.1715026-1-Jonathan.Cameron@huawei.com> References: <20200819145111.1715026-1-Jonathan.Cameron@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.123.41.22] X-ClientProxiedBy: lhreml741-chm.china.huawei.com (10.201.108.191) To lhreml710-chm.china.huawei.com (10.201.108.61) X-CFilter-Loop: Reflected Sender: linux-acpi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org Until we tell ACPI that we support generic initiators, it will have to operate in fall back domain mode and all _PXM entries should be on existing non GI domains. This patch sets the relevant OSC bit to make that happen. Signed-off-by: Jonathan Cameron --- drivers/acpi/bus.c | 4 ++++ include/linux/acpi.h | 1 + 2 files changed, 5 insertions(+) -- 2.19.1 diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c index 54002670cb7a..113c661eb848 100644 --- a/drivers/acpi/bus.c +++ b/drivers/acpi/bus.c @@ -303,7 +303,11 @@ static void acpi_bus_osc_support(void) capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_HOTPLUG_OST_SUPPORT; capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_PCLPI_SUPPORT; +#ifdef CONFIG_ARM64 + capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_GENERIC_INITIATOR_SUPPORT; +#endif #ifdef CONFIG_X86 + capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_GENERIC_INITIATOR_SUPPORT; if (boot_cpu_has(X86_FEATURE_HWP)) { capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_CPC_SUPPORT; capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_CPCV2_SUPPORT; diff --git a/include/linux/acpi.h b/include/linux/acpi.h index 1e4cdc6c7ae2..1321518a53d2 100644 --- a/include/linux/acpi.h +++ b/include/linux/acpi.h @@ -546,6 +546,7 @@ acpi_status acpi_run_osc(acpi_handle handle, struct acpi_osc_context *context); #define OSC_SB_PCLPI_SUPPORT 0x00000080 #define OSC_SB_OSLPI_SUPPORT 0x00000100 #define OSC_SB_CPC_DIVERSE_HIGH_SUPPORT 0x00001000 +#define OSC_SB_GENERIC_INITIATOR_SUPPORT 0x00002000 extern bool osc_sb_apei_support_acked; extern bool osc_pc_lpi_support_confirmed; From patchwork Wed Aug 19 14:51:09 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jonathan Cameron X-Patchwork-Id: 247965 Delivered-To: patch@linaro.org Received: by 2002:a05:6e02:522:0:0:0:0 with SMTP id h2csp535325ils; Wed, 19 Aug 2020 07:54:47 -0700 (PDT) X-Google-Smtp-Source: ABdhPJx3k7LMMG2IT5jXO2K6CY8E/arRTrXBGv0uo05zfOcTzccP84V8qnE9ayAmX1Vo6jmA5Br2 X-Received: by 2002:a05:6402:12c4:: with SMTP id k4mr24470417edx.358.1597848887364; Wed, 19 Aug 2020 07:54:47 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1597848887; cv=none; d=google.com; s=arc-20160816; b=HgNqsH0NgKJyfPC2DGEZBHhA5U0/Q8nUhpLml878X2ugDS6MGoTea5UVXSretsATjT 11Lx84Ck1v1X6vcddzr3nWUgiXA1AQJsOEDow9xX57AeNWLBFZ1aavagVgP4zvZJ4/5L yBW/8qUMkTFdQv1B9/pkpCzMGlUDUi3M3qnss+mYCs5jNuhYKI0CDrnW1CEd5GI4Jc94 2aY3XIGihA5/JFTsLQQLjUjaDCtJHVienLyn/QKxKkYTUnsKNoCJmMMjnFI/sbBYF42h jijfyPo6ACCt5oVtlRgJHvP2jTzQs2/Vd3UzHdgEYPyAUOCQoOhvVoz085PRm+QKnNvm As2A== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from; bh=mbxLlEWIUQzEcWeGGGAuTvzr4aHzAeYjxzFInWevZGM=; b=Tgn3g1Z+bzDMJjcWQGUtOY0mH9m8T6Ht/wepem+3Eiga3D89pwoxgL5AIqSihFdi4x 4Iwza02NR0Qg2tbcB1eOX/eqRORaHn2JXrytDXAbA8XH3nTOjKvh3kliLRvMHFXNliuc qyIn+urOLgJQGhJqIpJkGN/LEr8l8z2ztrCrxRTPKWSHOTxWMRN6P4MZXfcgCIobRKIC yPj8jcL1voP+e4K6FBu8O4sXN4duFWP65ddKvRRh9eDv6w0d2qeSe+TgGTWt1CJ+0Nj+ 1vz2kqQdCCPg/BfarPfeH5041P/eRWdyk4wLX15ZH2UmsrQgr82MzGIVNwQ1CT9k4VMA jDyw== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-acpi-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-acpi-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id m13si15447933edv.45.2020.08.19.07.54.47; Wed, 19 Aug 2020 07:54:47 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-acpi-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-acpi-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-acpi-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728060AbgHSOyn (ORCPT + 7 others); Wed, 19 Aug 2020 10:54:43 -0400 Received: from lhrrgout.huawei.com ([185.176.76.210]:2671 "EHLO huawei.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1727827AbgHSOym (ORCPT ); Wed, 19 Aug 2020 10:54:42 -0400 Received: from lhreml710-chm.china.huawei.com (unknown [172.18.7.108]) by Forcepoint Email with ESMTP id 032C127994B91CF0FFE4; Wed, 19 Aug 2020 15:54:41 +0100 (IST) Received: from lhrphicprd00229.huawei.com (10.123.41.22) by lhreml710-chm.china.huawei.com (10.201.108.61) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1913.5; Wed, 19 Aug 2020 15:54:40 +0100 From: Jonathan Cameron To: , , , CC: Lorenzo Pieralisi , Bjorn Helgaas , , , Ingo Molnar , Thomas Gleixner , , Dan Williams , Brice Goglin , Sean V Kelley , , Jonathan Cameron Subject: [PATCH v9 4/6] ACPI: HMAT: Fix handling of changes from ACPI 6.2 to ACPI 6.3 Date: Wed, 19 Aug 2020 22:51:09 +0800 Message-ID: <20200819145111.1715026-5-Jonathan.Cameron@huawei.com> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20200819145111.1715026-1-Jonathan.Cameron@huawei.com> References: <20200819145111.1715026-1-Jonathan.Cameron@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.123.41.22] X-ClientProxiedBy: lhreml741-chm.china.huawei.com (10.201.108.191) To lhreml710-chm.china.huawei.com (10.201.108.61) X-CFilter-Loop: Reflected Sender: linux-acpi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org In ACPI 6.3, the Memory Proximity Domain Attributes Structure changed substantially. One of those changes was that the flag for "Memory Proximity Domain field is valid" was deprecated. This was because the field "Proximity Domain for the Memory" became a required field and hence having a validity flag makes no sense. So the correct logic is to always assume the field is there. Current code assumes it never is. Signed-off-by: Jonathan Cameron --- drivers/acpi/numa/hmat.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) -- 2.19.1 diff --git a/drivers/acpi/numa/hmat.c b/drivers/acpi/numa/hmat.c index 2c32cfb72370..07cfe50136e0 100644 --- a/drivers/acpi/numa/hmat.c +++ b/drivers/acpi/numa/hmat.c @@ -424,7 +424,7 @@ static int __init hmat_parse_proximity_domain(union acpi_subtable_headers *heade pr_info("HMAT: Memory Flags:%04x Processor Domain:%u Memory Domain:%u\n", p->flags, p->processor_PD, p->memory_PD); - if (p->flags & ACPI_HMAT_MEMORY_PD_VALID && hmat_revision == 1) { + if ((p->flags & ACPI_HMAT_MEMORY_PD_VALID && hmat_revision == 1) || hmat_revision == 2) { target = find_mem_target(p->memory_PD); if (!target) { pr_debug("HMAT: Memory Domain missing from SRAT\n"); From patchwork Wed Aug 19 14:51:10 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jonathan Cameron X-Patchwork-Id: 247966 Delivered-To: patch@linaro.org Received: by 2002:a05:6e02:522:0:0:0:0 with SMTP id h2csp535642ils; Wed, 19 Aug 2020 07:55:15 -0700 (PDT) X-Google-Smtp-Source: ABdhPJyG6r58uuT2B1dyRuCUM8iM0pZ2cXRZxZhDmsO6vg5TnKXpuFEdC/wyqJUSwRBcfA4E7dsj X-Received: by 2002:a05:6402:1d8f:: with SMTP id dk15mr23375633edb.90.1597848914685; Wed, 19 Aug 2020 07:55:14 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1597848914; cv=none; d=google.com; s=arc-20160816; b=SwlO1eUPyiqLOSFygy8xtejCHGFh9DRgbdPyofYTQOkHyDsEYWAoj9XF6vcKUTwqJl UxqaqyP+HrbHmdazVsxjNqPhWbzWxep44hnHjjHNV9KcyGBzm3cizH0/f9yRIAahePw0 /5QDRx4bVdBRVB1zSnhOJ6kq7CIoLbHttgr5oR++P3209ayp+Kpq4BIE6l9OHxsBxOxy tt60TWNX2hTYNjFD06CWGT1dUH3HMVrxdERXqmWxFp7deBKGjQmJ552Qpu4cNZkAko0d M2tbPkKg9gO5Omvpyq8f9OCu6tzBQkMEyvIr1DXuc8ZbVPr10jD6zEuKr9IyyqFc1WzE 2M3g== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from; bh=076+0+pjiNWJ1Q53e4lcVQ37wOcPFC5qK7tEeJEaaNA=; b=pFCjnQDGuzdA+uYIbfHNQ7t5U17AXyYevYtCA3aI/acbCt+StyELFjbh475W+9EaOW fDIXf0vXqP2yROvXDasGcr8NjB2aaQdNBvPz9hLGwqUkbiGY+ujnli0e7SmzsmOEkCLg Aq9aGhj1b6Rc+tZLaHJigW86dnnPB9IsfNR9XGiQUNPngip9p0oxd2Q1j33O8davSu/w g6TVreNjCSUguXsS+w6XOj0wdk4x9w9BpVBAMrJocO6qA690HPnAVAWDlYyt4To/PIxg cMfWZXFBvkG9wuxGt0pxMkfDBRBrHcqv0qlLjrgOADgjxrytBhGKXSQXV+hTVA/F6Twh fnzA== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-acpi-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-acpi-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id m13si15447933edv.45.2020.08.19.07.55.14; Wed, 19 Aug 2020 07:55:14 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-acpi-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-acpi-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-acpi-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727827AbgHSOzN (ORCPT + 7 others); Wed, 19 Aug 2020 10:55:13 -0400 Received: from lhrrgout.huawei.com ([185.176.76.210]:2672 "EHLO huawei.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726792AbgHSOzN (ORCPT ); Wed, 19 Aug 2020 10:55:13 -0400 Received: from lhreml710-chm.china.huawei.com (unknown [172.18.7.108]) by Forcepoint Email with ESMTP id 493DB539CCBCBF309382; Wed, 19 Aug 2020 15:55:11 +0100 (IST) Received: from lhrphicprd00229.huawei.com (10.123.41.22) by lhreml710-chm.china.huawei.com (10.201.108.61) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1913.5; Wed, 19 Aug 2020 15:55:11 +0100 From: Jonathan Cameron To: , , , CC: Lorenzo Pieralisi , Bjorn Helgaas , , , Ingo Molnar , Thomas Gleixner , , Dan Williams , Brice Goglin , Sean V Kelley , , Jonathan Cameron Subject: [PATCH v9 5/6] node: Add access1 class to represent CPU to memory characteristics Date: Wed, 19 Aug 2020 22:51:10 +0800 Message-ID: <20200819145111.1715026-6-Jonathan.Cameron@huawei.com> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20200819145111.1715026-1-Jonathan.Cameron@huawei.com> References: <20200819145111.1715026-1-Jonathan.Cameron@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.123.41.22] X-ClientProxiedBy: lhreml741-chm.china.huawei.com (10.201.108.191) To lhreml710-chm.china.huawei.com (10.201.108.61) X-CFilter-Loop: Reflected Sender: linux-acpi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org New access1 class is nearly the same as access0, but always provides characteristics for CPUs to memory. The existing access0 class provides characteristics to nearest or direct connnect initiator which may be a Generic Initiator such as a GPU or network adapter. This new class allows thread placement on CPUs to be performed so as to give optimal access characteristics to memory, even if that memory is for example attached to a GPU or similar and only accessible to the CPU via an appropriate bus. Suggested-by: Dan Willaims Signed-off-by: Jonathan Cameron --- drivers/acpi/numa/hmat.c | 87 +++++++++++++++++++++++++++++++--------- 1 file changed, 68 insertions(+), 19 deletions(-) -- 2.19.1 diff --git a/drivers/acpi/numa/hmat.c b/drivers/acpi/numa/hmat.c index 07cfe50136e0..00b4cdbefb5e 100644 --- a/drivers/acpi/numa/hmat.c +++ b/drivers/acpi/numa/hmat.c @@ -56,7 +56,7 @@ struct memory_target { unsigned int memory_pxm; unsigned int processor_pxm; struct resource memregions; - struct node_hmem_attrs hmem_attrs; + struct node_hmem_attrs hmem_attrs[2]; struct list_head caches; struct node_cache_attrs cache_attrs; bool registered; @@ -65,6 +65,7 @@ struct memory_target { struct memory_initiator { struct list_head node; unsigned int processor_pxm; + bool has_cpu; }; struct memory_locality { @@ -108,6 +109,7 @@ static __init void alloc_memory_initiator(unsigned int cpu_pxm) return; initiator->processor_pxm = cpu_pxm; + initiator->has_cpu = node_state(pxm_to_node(cpu_pxm), N_CPU); list_add_tail(&initiator->node, &initiators); } @@ -215,28 +217,28 @@ static u32 hmat_normalize(u16 entry, u64 base, u8 type) } static void hmat_update_target_access(struct memory_target *target, - u8 type, u32 value) + u8 type, u32 value, int access) { switch (type) { case ACPI_HMAT_ACCESS_LATENCY: - target->hmem_attrs.read_latency = value; - target->hmem_attrs.write_latency = value; + target->hmem_attrs[access].read_latency = value; + target->hmem_attrs[access].write_latency = value; break; case ACPI_HMAT_READ_LATENCY: - target->hmem_attrs.read_latency = value; + target->hmem_attrs[access].read_latency = value; break; case ACPI_HMAT_WRITE_LATENCY: - target->hmem_attrs.write_latency = value; + target->hmem_attrs[access].write_latency = value; break; case ACPI_HMAT_ACCESS_BANDWIDTH: - target->hmem_attrs.read_bandwidth = value; - target->hmem_attrs.write_bandwidth = value; + target->hmem_attrs[access].read_bandwidth = value; + target->hmem_attrs[access].write_bandwidth = value; break; case ACPI_HMAT_READ_BANDWIDTH: - target->hmem_attrs.read_bandwidth = value; + target->hmem_attrs[access].read_bandwidth = value; break; case ACPI_HMAT_WRITE_BANDWIDTH: - target->hmem_attrs.write_bandwidth = value; + target->hmem_attrs[access].write_bandwidth = value; break; default: break; @@ -329,8 +331,12 @@ static __init int hmat_parse_locality(union acpi_subtable_headers *header, if (mem_hier == ACPI_HMAT_MEMORY) { target = find_mem_target(targs[targ]); - if (target && target->processor_pxm == inits[init]) - hmat_update_target_access(target, type, value); + if (target && target->processor_pxm == inits[init]) { + hmat_update_target_access(target, type, value, 0); + /* If the node has a CPU, update access 1*/ + if (node_state(pxm_to_node(inits[init]), N_CPU)) + hmat_update_target_access(target, type, value, 1); + } } } } @@ -566,6 +572,7 @@ static void hmat_register_target_initiators(struct memory_target *target) unsigned int mem_nid, cpu_nid; struct memory_locality *loc = NULL; u32 best = 0; + bool access0done = false; int i; mem_nid = pxm_to_node(target->memory_pxm); @@ -577,7 +584,11 @@ static void hmat_register_target_initiators(struct memory_target *target) if (target->processor_pxm != PXM_INVAL) { cpu_nid = pxm_to_node(target->processor_pxm); register_memory_node_under_compute_node(mem_nid, cpu_nid, 0); - return; + access0done = true; + if (node_state(cpu_nid, N_CPU)) { + register_memory_node_under_compute_node(mem_nid, cpu_nid, 1); + return; + } } if (list_empty(&localities)) @@ -591,6 +602,40 @@ static void hmat_register_target_initiators(struct memory_target *target) */ bitmap_zero(p_nodes, MAX_NUMNODES); list_sort(p_nodes, &initiators, initiator_cmp); + if (!access0done) { + for (i = WRITE_LATENCY; i <= READ_BANDWIDTH; i++) { + loc = localities_types[i]; + if (!loc) + continue; + + best = 0; + list_for_each_entry(initiator, &initiators, node) { + u32 value; + + if (!test_bit(initiator->processor_pxm, p_nodes)) + continue; + + value = hmat_initiator_perf(target, initiator, + loc->hmat_loc); + if (hmat_update_best(loc->hmat_loc->data_type, value, &best)) + bitmap_clear(p_nodes, 0, initiator->processor_pxm); + if (value != best) + clear_bit(initiator->processor_pxm, p_nodes); + } + if (best) + hmat_update_target_access(target, loc->hmat_loc->data_type, best, 0); + } + + for_each_set_bit(i, p_nodes, MAX_NUMNODES) { + cpu_nid = pxm_to_node(i); + register_memory_node_under_compute_node(mem_nid, cpu_nid, 0); + } + } + + /* Access 1 ignores Generic Initiators */ + bitmap_zero(p_nodes, MAX_NUMNODES); + list_sort(p_nodes, &initiators, initiator_cmp); + best = 0; for (i = WRITE_LATENCY; i <= READ_BANDWIDTH; i++) { loc = localities_types[i]; if (!loc) @@ -600,6 +645,10 @@ static void hmat_register_target_initiators(struct memory_target *target) list_for_each_entry(initiator, &initiators, node) { u32 value; + if (!initiator->has_cpu) { + clear_bit(initiator->processor_pxm, p_nodes); + continue; + } if (!test_bit(initiator->processor_pxm, p_nodes)) continue; @@ -610,12 +659,11 @@ static void hmat_register_target_initiators(struct memory_target *target) clear_bit(initiator->processor_pxm, p_nodes); } if (best) - hmat_update_target_access(target, loc->hmat_loc->data_type, best); + hmat_update_target_access(target, loc->hmat_loc->data_type, best, 1); } - for_each_set_bit(i, p_nodes, MAX_NUMNODES) { cpu_nid = pxm_to_node(i); - register_memory_node_under_compute_node(mem_nid, cpu_nid, 0); + register_memory_node_under_compute_node(mem_nid, cpu_nid, 1); } } @@ -628,10 +676,10 @@ static void hmat_register_target_cache(struct memory_target *target) node_add_cache(mem_nid, &tcache->cache_attrs); } -static void hmat_register_target_perf(struct memory_target *target) +static void hmat_register_target_perf(struct memory_target *target, int access) { unsigned mem_nid = pxm_to_node(target->memory_pxm); - node_set_perf_attrs(mem_nid, &target->hmem_attrs, 0); + node_set_perf_attrs(mem_nid, &target->hmem_attrs[access], access); } static void hmat_register_target_device(struct memory_target *target, @@ -733,7 +781,8 @@ static void hmat_register_target(struct memory_target *target) if (!target->registered) { hmat_register_target_initiators(target); hmat_register_target_cache(target); - hmat_register_target_perf(target); + hmat_register_target_perf(target, 0); + hmat_register_target_perf(target, 1); target->registered = true; } mutex_unlock(&target_lock); From patchwork Wed Aug 19 14:51:11 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jonathan Cameron X-Patchwork-Id: 247967 Delivered-To: patch@linaro.org Received: by 2002:a05:6e02:522:0:0:0:0 with SMTP id h2csp536127ils; Wed, 19 Aug 2020 07:55:52 -0700 (PDT) X-Google-Smtp-Source: ABdhPJyqrrK9PO6g95EyUDe8Osg6EqHbA4ZQb8RrLmMJTxPa/EDKDmroYV14ZOEwAIrs5aS6FVzh X-Received: by 2002:a05:6402:1845:: with SMTP id v5mr25633244edy.66.1597848952832; Wed, 19 Aug 2020 07:55:52 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1597848952; cv=none; d=google.com; s=arc-20160816; b=iJS6Uizh16qj4EcTpzDs3Yau7FMqa0uxETW7a+mbzRLGZP/7vpLuExMfW616YlEo6a xov7OwmeSXblxDm+CKLsvC7i2IfrD/F5/bPaer8zfesiG4qr60L91cGja+EuFoqqD3sT PIYKKkldlv2ufWPh5F56dH8BHoZ8mk48/p5XA2AXXWLBlHmq6xNvMov3WeS2xZUnfyPF KWqgROZoUyUy9D4fLTRPXg5zSuTTyfD6Rbdlwc1N2L1UxifV3xTXAoQWsfkoncnCZRnz Qws2lQ72TKly3pprgmVK2nBMQxDYut/okICIn4IBHc/6iesPshiF99rppiPgZq6zn9uv mAcQ== ARC-Message-Signature: i=1; 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[23.128.96.18]) by mx.google.com with ESMTP id e8si15042850eja.31.2020.08.19.07.55.52; Wed, 19 Aug 2020 07:55:52 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-acpi-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-acpi-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-acpi-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727975AbgHSOzo (ORCPT + 7 others); Wed, 19 Aug 2020 10:55:44 -0400 Received: from lhrrgout.huawei.com ([185.176.76.210]:2673 "EHLO huawei.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726899AbgHSOzn (ORCPT ); Wed, 19 Aug 2020 10:55:43 -0400 Received: from lhreml710-chm.china.huawei.com (unknown [172.18.7.107]) by Forcepoint Email with ESMTP id BE0AA37D166D367E32FE; Wed, 19 Aug 2020 15:55:41 +0100 (IST) Received: from lhrphicprd00229.huawei.com (10.123.41.22) by lhreml710-chm.china.huawei.com (10.201.108.61) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1913.5; Wed, 19 Aug 2020 15:55:41 +0100 From: Jonathan Cameron To: , , , CC: Lorenzo Pieralisi , Bjorn Helgaas , , , Ingo Molnar , Thomas Gleixner , , Dan Williams , Brice Goglin , Sean V Kelley , , Jonathan Cameron Subject: [PATCH v9 6/6] docs: mm: numaperf.rst Add brief description for access class 1. Date: Wed, 19 Aug 2020 22:51:11 +0800 Message-ID: <20200819145111.1715026-7-Jonathan.Cameron@huawei.com> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20200819145111.1715026-1-Jonathan.Cameron@huawei.com> References: <20200819145111.1715026-1-Jonathan.Cameron@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.123.41.22] X-ClientProxiedBy: lhreml741-chm.china.huawei.com (10.201.108.191) To lhreml710-chm.china.huawei.com (10.201.108.61) X-CFilter-Loop: Reflected Sender: linux-acpi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org Try to make minimal changes to the document which already describes access class 0 in a generic fashion (including IO initiatiors that are not CPUs). Signed-off-by: Jonathan Cameron --- Documentation/admin-guide/mm/numaperf.rst | 8 ++++++++ 1 file changed, 8 insertions(+) -- 2.19.1 diff --git a/Documentation/admin-guide/mm/numaperf.rst b/Documentation/admin-guide/mm/numaperf.rst index 4d69ef1de830..b89bb85eac75 100644 --- a/Documentation/admin-guide/mm/numaperf.rst +++ b/Documentation/admin-guide/mm/numaperf.rst @@ -56,6 +56,11 @@ nodes' access characteristics share the same performance relative to other linked initiator nodes. Each target within an initiator's access class, though, do not necessarily perform the same as each other. +The access class "1" is used to allow differentiation between initiators +that are CPUs and hence suitable for generic task scheduling, and +IO initiators such as GPUs and NICs. Unlike access class 0, only +nodes containing CPUs are considered. + ================ NUMA Performance ================ @@ -88,6 +93,9 @@ The latency attributes are provided in nanoseconds. The values reported here correspond to the rated latency and bandwidth for the platform. +Access class 1, takes the same form, but only includes values for CPU to +memory activity. + ========== NUMA Cache ==========