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[PATCH v7 15/15] acpi, numa: Enable ACPI based NUMA on ARM64

From David Daney <ddaney.cavm@gmail.com>
Newsgroups linux.kernel
Subject [PATCH v7 15/15] acpi, numa: Enable ACPI based NUMA on ARM64
Date 2016-05-25 00:40 +0200
Message-ID <rCt9w-R2-25@gated-at.bofh.it> (permalink)
References <rCt9v-R2-5@gated-at.bofh.it>
Organization linux.* mail to news gateway

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From: Hanjun Guo <hanjun.guo@linaro.org>

Add function needed for cpu to node mapping, and enable ACPI based
NUMA for ARM64 in Kconfig

Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org>
Signed-off-by: Robert Richter <rrichter@cavium.com>
[david.daney@cavium.com added ACPI_NUMA default to y for ARM64]
Signed-off-by: David Daney <david.daney@cavium.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
---
 drivers/acpi/Kconfig |  4 ++--
 drivers/acpi/numa.c  | 37 ++++++++++++++++++++++++++++++++++++-
 include/linux/acpi.h | 17 ++++++++++++++++-
 3 files changed, 54 insertions(+), 4 deletions(-)

diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig
index b7e2e77..dd76b36 100644
--- a/drivers/acpi/Kconfig
+++ b/drivers/acpi/Kconfig
@@ -291,8 +291,8 @@ config ACPI_THERMAL
 config ACPI_NUMA
 	bool "NUMA support"
 	depends on NUMA
-	depends on (X86 || IA64)
-	default y if IA64_GENERIC || IA64_SGI_SN2
+	depends on (X86 || IA64 || ARM64)
+	default y if IA64_GENERIC || IA64_SGI_SN2 || ARM64
 
 config ACPI_CUSTOM_DSDT_FILE
 	string "Custom DSDT Table file to include"
diff --git a/drivers/acpi/numa.c b/drivers/acpi/numa.c
index fad6d28..9b7ce40 100644
--- a/drivers/acpi/numa.c
+++ b/drivers/acpi/numa.c
@@ -170,6 +170,18 @@ acpi_table_print_srat_entry(struct acpi_subtable_header *header)
 		}
 		break;
 
+	case ACPI_SRAT_TYPE_GICC_AFFINITY:
+		{
+			struct acpi_srat_gicc_affinity *p =
+			    (struct acpi_srat_gicc_affinity *)header;
+			pr_debug("SRAT Processor (acpi id[0x%04x]) in proximity domain %d %s\n",
+				 p->acpi_processor_uid,
+				 p->proximity_domain,
+				 (p->flags & ACPI_SRAT_GICC_ENABLED) ?
+				 "enabled" : "disabled");
+		}
+		break;
+
 	default:
 		pr_warn("Found unsupported SRAT entry (type = 0x%x)\n",
 			header->type);
@@ -360,6 +372,24 @@ acpi_parse_processor_affinity(struct acpi_subtable_header *header,
 	return 0;
 }
 
+static int __init
+acpi_parse_gicc_affinity(struct acpi_subtable_header *header,
+			 const unsigned long end)
+{
+	struct acpi_srat_gicc_affinity *processor_affinity;
+
+	processor_affinity = (struct acpi_srat_gicc_affinity *)header;
+	if (!processor_affinity)
+		return -EINVAL;
+
+	acpi_table_print_srat_entry(header);
+
+	/* let architecture-dependent part to do it */
+	acpi_numa_gicc_affinity_init(processor_affinity);
+
+	return 0;
+}
+
 static int __initdata parsed_numa_memblks;
 
 static int __init
@@ -404,6 +434,9 @@ int __init acpi_numa_init(void)
 {
 	int cnt = 0;
 
+	if (acpi_disabled)
+		return -EINVAL;
+
 	/*
 	 * Should not limit number with cpu num that is from NR_CPUS or nr_cpus=
 	 * SRAT cpu entries could have different order with that in MADT.
@@ -412,13 +445,15 @@ int __init acpi_numa_init(void)
 
 	/* SRAT: Static Resource Affinity Table */
 	if (!acpi_table_parse(ACPI_SIG_SRAT, acpi_parse_srat)) {
-		struct acpi_subtable_proc srat_proc[2];
+		struct acpi_subtable_proc srat_proc[3];
 
 		memset(srat_proc, 0, sizeof(srat_proc));
 		srat_proc[0].id = ACPI_SRAT_TYPE_CPU_AFFINITY;
 		srat_proc[0].handler = acpi_parse_processor_affinity;
 		srat_proc[1].id = ACPI_SRAT_TYPE_X2APIC_CPU_AFFINITY;
 		srat_proc[1].handler = acpi_parse_x2apic_affinity;
+		srat_proc[1].id = ACPI_SRAT_TYPE_GICC_AFFINITY;
+		srat_proc[1].handler = acpi_parse_gicc_affinity;
 
 		acpi_table_parse_entries_array(ACPI_SIG_SRAT,
 					sizeof(struct acpi_table_srat),
diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index 8010b26..9515db6 100644
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -232,10 +232,25 @@ int acpi_table_parse_madt(enum acpi_madt_type id,
 int acpi_parse_mcfg (struct acpi_table_header *header);
 void acpi_table_print_madt_entry (struct acpi_subtable_header *madt);
 
-/* the following four functions are architecture-dependent */
+/* the following numa functions are architecture-dependent */
 void acpi_numa_slit_init (struct acpi_table_slit *slit);
+
+#if defined(CONFIG_X86) || defined(CONFIG_IA64)
 void acpi_numa_processor_affinity_init (struct acpi_srat_cpu_affinity *pa);
+#else
+static inline void
+acpi_numa_processor_affinity_init(struct acpi_srat_cpu_affinity *pa) { }
+#endif
+
 void acpi_numa_x2apic_affinity_init(struct acpi_srat_x2apic_cpu_affinity *pa);
+
+#ifdef CONFIG_ARM64
+void acpi_numa_gicc_affinity_init(struct acpi_srat_gicc_affinity *pa);
+#else
+static inline void
+acpi_numa_gicc_affinity_init(struct acpi_srat_gicc_affinity *pa) { }
+#endif
+
 int acpi_numa_memory_affinity_init (struct acpi_srat_mem_affinity *ma);
 
 #ifndef PHYS_CPUID_INVALID
-- 
1.7.11.7

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Thread

[PATCH v7 00/15] ACPI NUMA support for ARM64 David Daney <ddaney.cavm@gmail.com> - 2016-05-25 00:40 +0200
  [PATCH v7 02/15] acpi, numa: Replace ACPI_DEBUG_PRINT() with pr_debug() David Daney <ddaney.cavm@gmail.com> - 2016-05-25 00:40 +0200
  [PATCH v7 09/15] acpi, numa: move bad_srat() and srat_disabled() to drivers/acpi/numa.c David Daney <ddaney.cavm@gmail.com> - 2016-05-25 00:40 +0200
  [PATCH v7 12/15] acpi, numa, srat: Improve SRAT error detection and add messages. David Daney <ddaney.cavm@gmail.com> - 2016-05-25 00:40 +0200
  [PATCH v7 13/15] ACPI / processor: Add acpi_map_madt_entry(). David Daney <ddaney.cavm@gmail.com> - 2016-05-25 00:40 +0200
    Re: [PATCH v7 13/15] ACPI / processor: Add acpi_map_madt_entry(). Catalin Marinas <catalin.marinas@arm.com> - 2016-05-25 16:50 +0200
  [PATCH v7 11/15] acpi, numa: Move acpi_numa_memory_affinity_init() to drivers/acpi/numa.c David Daney <ddaney.cavm@gmail.com> - 2016-05-25 00:40 +0200
  [PATCH v7 10/15] acpi, numa: remove unneeded acpi_numa=1 David Daney <ddaney.cavm@gmail.com> - 2016-05-25 00:40 +0200
  [PATCH v7 14/15] arm64, acpi, numa: NUMA support based on SRAT and SLIT David Daney <ddaney.cavm@gmail.com> - 2016-05-25 00:40 +0200
    Re: [PATCH v7 14/15] arm64, acpi, numa: NUMA support based on SRAT  and SLIT Catalin Marinas <catalin.marinas@arm.com> - 2016-05-25 16:50 +0200
    Re: [PATCH v7 14/15] arm64, acpi, numa: NUMA support based on SRAT  and SLIT Dennis Chen <dennis.chen@linaro.org> - 2016-05-27 10:10 +0200
  [PATCH v7 15/15] acpi, numa: Enable ACPI based NUMA on ARM64 David Daney <ddaney.cavm@gmail.com> - 2016-05-25 00:40 +0200
  [PATCH v7 05/15] acpi, numa: move acpi_numa_slit_init() to drivers/acpi/numa.c David Daney <ddaney.cavm@gmail.com> - 2016-05-25 00:40 +0200
  [PATCH v7 07/15] arm64, numa: Cleanup NUMA disabled messages. David Daney <ddaney.cavm@gmail.com> - 2016-05-25 00:40 +0200
    Re: [PATCH v7 07/15] arm64, numa: Cleanup NUMA disabled messages. Dennis Chen <dennis.chen@linaro.org> - 2016-05-27 10:00 +0200
  [PATCH v7 08/15] x86, acpi, numa: cleanup acpi_numa_processor_affinity_init() David Daney <ddaney.cavm@gmail.com> - 2016-05-25 00:40 +0200
  [PATCH v7 06/15] arm64, numa: rework numa_add_memblk() David Daney <ddaney.cavm@gmail.com> - 2016-05-25 00:50 +0200
  [PATCH v7 04/15] acpi, numa: Move acpi_numa_arch_fixup() to ia64 only David Daney <ddaney.cavm@gmail.com> - 2016-05-25 00:50 +0200
  [PATCH v7 03/15] acpi, numa: remove duplicate NULL check David Daney <ddaney.cavm@gmail.com> - 2016-05-25 00:50 +0200

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