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Message-Id: <20240812-mips-numa-v2-3-fd9bdb2033b9@flygoat.com>
Date: Mon, 12 Aug 2024 10:37:17 +0100
From: Jiaxun Yang <jiaxun.yang@...goat.com>
To: "Rafael J. Wysocki" <rafael@...nel.org>, Arnd Bergmann <arnd@...db.de>,
Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
Huacai Chen <chenhuacai@...nel.org>
Cc: linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org,
linux-mips@...r.kernel.org, Jiaxun Yang <jiaxun.yang@...goat.com>
Subject: [PATCH v2 3/7] MIPS: Prepare NUMA headers for arch_numa
Massage headers so that we can include asm-generic/numa.h
for generic platform.
Provide dummy arch_numa like functions in Loongson64/IP27 platform
to fill the gap between them and generic platform.
Signed-off-by: Jiaxun Yang <jiaxun.yang@...goat.com>
---
arch/mips/include/asm/mach-generic/mmzone.h | 11 +++++++++++
arch/mips/include/asm/mach-generic/numa.h | 11 +++++++++++
arch/mips/include/asm/mach-generic/topology.h | 7 +++++++
arch/mips/include/asm/mach-ip27/numa.h | 22 ++++++++++++++++++++++
arch/mips/include/asm/mach-ip27/topology.h | 8 +++-----
arch/mips/include/asm/mach-loongson64/numa.h | 22 ++++++++++++++++++++++
arch/mips/include/asm/mach-loongson64/topology.h | 10 ++++------
arch/mips/include/asm/mmzone.h | 5 +----
arch/mips/include/asm/numa.h | 12 ++++++++++++
arch/mips/kernel/setup.c | 1 +
10 files changed, 94 insertions(+), 15 deletions(-)
diff --git a/arch/mips/include/asm/mach-generic/mmzone.h b/arch/mips/include/asm/mach-generic/mmzone.h
new file mode 100644
index 000000000000..d4374b71a900
--- /dev/null
+++ b/arch/mips/include/asm/mach-generic/mmzone.h
@@ -0,0 +1,11 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2024 Jiaxun Yang <jiaxun.yang@...goat.com>
+ */
+
+#ifndef __ASM_MACH_GENERIC_MMZONE_H
+#define __ASM_MACH_GENERIC_MMZONE_H
+
+/* Intentionally empty file ... */
+
+#endif /* __ASM_MACH_GENERIC_MMZONE_H */
diff --git a/arch/mips/include/asm/mach-generic/numa.h b/arch/mips/include/asm/mach-generic/numa.h
new file mode 100644
index 000000000000..311a5871807c
--- /dev/null
+++ b/arch/mips/include/asm/mach-generic/numa.h
@@ -0,0 +1,11 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2024 Jiaxun Yang <jiaxun.yang@...goat.com>
+ */
+
+#ifndef __ASM_MACH_GENERIC_NUMA_H
+#define __ASM_MACH_GENERIC_NUMA_H
+
+#include <asm-generic/numa.h>
+
+#endif /* __ASM_NUMA_H */
diff --git a/arch/mips/include/asm/mach-generic/topology.h b/arch/mips/include/asm/mach-generic/topology.h
index 5428f333a02c..fa82d18ba9e7 100644
--- a/arch/mips/include/asm/mach-generic/topology.h
+++ b/arch/mips/include/asm/mach-generic/topology.h
@@ -1 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+#ifndef __ASM_MACH_GENERIC_TOPOLOGY_H
+#define __ASM_MACH_GENERIC_TOPOLOGY_H
+
+#include <asm/numa.h>
#include <asm-generic/topology.h>
+
+#endif
diff --git a/arch/mips/include/asm/mach-ip27/numa.h b/arch/mips/include/asm/mach-ip27/numa.h
new file mode 100644
index 000000000000..e2adadf8a589
--- /dev/null
+++ b/arch/mips/include/asm/mach-ip27/numa.h
@@ -0,0 +1,22 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2024 Jiaxun Yang <jiaxun.yang@...goat.com>
+ */
+
+#ifndef __ASM_MACH_NUMA_H
+#define __ASM_MACH_NUMA_H
+
+#ifdef CONFIG_NUMA
+extern unsigned char __node_distances[MAX_NUMNODES][MAX_NUMNODES];
+
+#define node_distance(from, to) (__node_distances[(from)][(to)])
+#endif
+
+/* Hanlded in platform code */
+static inline void numa_store_cpu_info(unsigned int cpu) { }
+static inline void numa_add_cpu(unsigned int cpu) { }
+static inline void numa_remove_cpu(unsigned int cpu) { }
+static inline void arch_numa_init(void) { }
+static inline void early_map_cpu_to_node(unsigned int cpu, int nid) { }
+
+#endif /* __ASM_NUMA_H */
diff --git a/arch/mips/include/asm/mach-ip27/topology.h b/arch/mips/include/asm/mach-ip27/topology.h
index 0ad74e2e0d85..33d5bf925431 100644
--- a/arch/mips/include/asm/mach-ip27/topology.h
+++ b/arch/mips/include/asm/mach-ip27/topology.h
@@ -4,6 +4,7 @@
#include <asm/sn/types.h>
#include <asm/mmzone.h>
+#include <asm/numa.h>
struct cpuinfo_ip27 {
nasid_t p_nasid; /* my node ID in numa-as-id-space */
@@ -13,15 +14,12 @@ struct cpuinfo_ip27 {
extern struct cpuinfo_ip27 sn_cpu_info[NR_CPUS];
-#define cpu_to_node(cpu) (cputonasid(cpu))
+#define early_cpu_to_node(cpu) (cputonasid(cpu))
+#define cpu_to_node(cpu) early_cpu_to_node(cpu)
#define cpumask_of_node(node) ((node) == -1 ? \
cpu_all_mask : \
&hub_data(node)->h_cpus)
-extern unsigned char __node_distances[MAX_NUMNODES][MAX_NUMNODES];
-
-#define node_distance(from, to) (__node_distances[(from)][(to)])
-
#include <asm-generic/topology.h>
#endif /* _ASM_MACH_TOPOLOGY_H */
diff --git a/arch/mips/include/asm/mach-loongson64/numa.h b/arch/mips/include/asm/mach-loongson64/numa.h
new file mode 100644
index 000000000000..2fac370d981f
--- /dev/null
+++ b/arch/mips/include/asm/mach-loongson64/numa.h
@@ -0,0 +1,22 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2024 Jiaxun Yang <jiaxun.yang@...goat.com>
+ */
+
+#ifndef __ASM_MACH_LOONGSON64_NUMA_H
+#define __ASM_MACH_LOONGSON64_NUMA_H
+
+#ifdef CONFIG_NUMA
+extern unsigned char __node_distances[MAX_NUMNODES][MAX_NUMNODES];
+
+#define node_distance(from, to) (__node_distances[(from)][(to)])
+#endif
+
+/* Hanlded in platform code */
+static inline void numa_store_cpu_info(unsigned int cpu) { }
+static inline void numa_add_cpu(unsigned int cpu) { }
+static inline void numa_remove_cpu(unsigned int cpu) { }
+static inline void arch_numa_init(void) { }
+static inline void early_map_cpu_to_node(unsigned int cpu, int nid) { }
+
+#endif /* __ASM_NUMA_H */
diff --git a/arch/mips/include/asm/mach-loongson64/topology.h b/arch/mips/include/asm/mach-loongson64/topology.h
index c60ccdbe5a94..ebb086821401 100644
--- a/arch/mips/include/asm/mach-loongson64/topology.h
+++ b/arch/mips/include/asm/mach-loongson64/topology.h
@@ -2,17 +2,15 @@
#ifndef _ASM_MACH_TOPOLOGY_H
#define _ASM_MACH_TOPOLOGY_H
-#ifdef CONFIG_NUMA
+#include <asm/numa.h>
-#define cpu_to_node(cpu) (cpu_logical_map(cpu) >> 2)
+#ifdef CONFIG_NUMA
+#define early_cpu_to_node(cpu) (cpu_logical_map(cpu) >> 2)
+#define cpu_to_node(cpu) early_cpu_to_node(cpu)
extern cpumask_t __node_cpumask[];
#define cpumask_of_node(node) (&__node_cpumask[node])
-extern unsigned char __node_distances[MAX_NUMNODES][MAX_NUMNODES];
-
-#define node_distance(from, to) (__node_distances[(from)][(to)])
-
#endif
#include <asm-generic/topology.h>
diff --git a/arch/mips/include/asm/mmzone.h b/arch/mips/include/asm/mmzone.h
index 14226ea42036..f472c8ec3a63 100644
--- a/arch/mips/include/asm/mmzone.h
+++ b/arch/mips/include/asm/mmzone.h
@@ -7,10 +7,7 @@
#define _ASM_MMZONE_H_
#include <asm/page.h>
-
-#ifdef CONFIG_NUMA
-# include <mmzone.h>
-#endif
+#include <mmzone.h>
#ifndef pa_to_nid
#define pa_to_nid(addr) 0
diff --git a/arch/mips/include/asm/numa.h b/arch/mips/include/asm/numa.h
new file mode 100644
index 000000000000..ff1eb9ef51e6
--- /dev/null
+++ b/arch/mips/include/asm/numa.h
@@ -0,0 +1,12 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2024 Jiaxun Yang <jiaxun.yang@...goat.com>
+ */
+
+#ifndef __ASM_NUMA_H
+#define __ASM_NUMA_H
+
+#include <asm/topology.h>
+#include <numa.h>
+
+#endif /* __ASM_NUMA_H */
diff --git a/arch/mips/kernel/setup.c b/arch/mips/kernel/setup.c
index 12a1a4ffb602..655391c04477 100644
--- a/arch/mips/kernel/setup.c
+++ b/arch/mips/kernel/setup.c
@@ -664,6 +664,7 @@ static void __init arch_mem_init(char **cmdline_p)
mips_parse_crashkernel();
device_tree_init();
+ arch_numa_init();
/*
* In order to reduce the possibility of kernel panic when failed to
--
2.46.0
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