The quilt patch titled
Subject: arch, mm: move definition of node_data to generic code
has been removed from the -mm tree. Its filename was
arch-mm-move-definition-of-node_data-to-generic-code.patch
This patch was dropped because it was merged into the mm-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
------------------------------------------------------
From: "Mike Rapoport (Microsoft)" <rppt@xxxxxxxxxx>
Subject: arch, mm: move definition of node_data to generic code
Date: Wed, 7 Aug 2024 09:40:51 +0300
Every architecture that supports NUMA defines node_data in the same way:
struct pglist_data *node_data[MAX_NUMNODES];
No reason to keep multiple copies of this definition and its forward
declarations, especially when such forward declaration is the only thing
in include/asm/mmzone.h for many architectures.
Add definition and declaration of node_data to generic code and drop
architecture-specific versions.
Link: https://lkml.kernel.org/r/20240807064110.1003856-8-rppt@xxxxxxxxxx
Signed-off-by: Mike Rapoport (Microsoft) <rppt@xxxxxxxxxx>
Acked-by: David Hildenbrand <david@xxxxxxxxxx>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>
Acked-by: Davidlohr Bueso <dave@xxxxxxxxxxxx>
Tested-by: Zi Yan <ziy@xxxxxxxxxx> # for x86_64 and arm64
Tested-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx> [arm64 + CXL via QEMU]
Acked-by: Dan Williams <dan.j.williams@xxxxxxxxx>
Cc: Alexander Gordeev <agordeev@xxxxxxxxxxxxx>
Cc: Andreas Larsson <andreas@xxxxxxxxxxx>
Cc: Arnd Bergmann <arnd@xxxxxxxx>
Cc: Borislav Petkov <bp@xxxxxxxxx>
Cc: Catalin Marinas <catalin.marinas@xxxxxxx>
Cc: Christophe Leroy <christophe.leroy@xxxxxxxxxx>
Cc: Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>
Cc: David S. Miller <davem@xxxxxxxxxxxxx>
Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Cc: Heiko Carstens <hca@xxxxxxxxxxxxx>
Cc: Huacai Chen <chenhuacai@xxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: Jiaxun Yang <jiaxun.yang@xxxxxxxxxxx>
Cc: John Paul Adrian Glaubitz <glaubitz@xxxxxxxxxxxxxxxxxxx>
Cc: Jonathan Corbet <corbet@xxxxxxx>
Cc: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
Cc: Palmer Dabbelt <palmer@xxxxxxxxxxx>
Cc: Rafael J. Wysocki <rafael@xxxxxxxxxx>
Cc: Rob Herring (Arm) <robh@xxxxxxxxxx>
Cc: Samuel Holland <samuel.holland@xxxxxxxxxx>
Cc: Thomas Bogendoerfer <tsbogend@xxxxxxxxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Vasily Gorbik <gor@xxxxxxxxxxxxx>
Cc: Will Deacon <will@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/arm64/include/asm/Kbuild | 1
arch/arm64/include/asm/mmzone.h | 13 ----------
arch/arm64/include/asm/topology.h | 1
arch/loongarch/include/asm/Kbuild | 1
arch/loongarch/include/asm/mmzone.h | 16 -------------
arch/loongarch/include/asm/topology.h | 1
arch/loongarch/kernel/numa.c | 3 --
arch/mips/include/asm/mach-ip27/mmzone.h | 4 ---
arch/mips/include/asm/mach-loongson64/mmzone.h | 4 ---
arch/mips/loongson64/numa.c | 2 -
arch/mips/sgi-ip27/ip27-memory.c | 3 --
arch/powerpc/include/asm/mmzone.h | 6 -----
arch/powerpc/mm/numa.c | 2 -
arch/riscv/include/asm/Kbuild | 1
arch/riscv/include/asm/mmzone.h | 13 ----------
arch/riscv/include/asm/topology.h | 4 +++
arch/s390/include/asm/Kbuild | 1
arch/s390/include/asm/mmzone.h | 17 --------------
arch/s390/kernel/numa.c | 3 --
arch/sh/include/asm/mmzone.h | 3 --
arch/sh/mm/numa.c | 3 --
arch/sparc/include/asm/mmzone.h | 4 ---
arch/sparc/mm/init_64.c | 2 -
arch/x86/include/asm/Kbuild | 1
arch/x86/include/asm/mmzone.h | 6 -----
arch/x86/include/asm/mmzone_32.h | 17 --------------
arch/x86/include/asm/mmzone_64.h | 18 ---------------
arch/x86/mm/numa.c | 3 --
drivers/base/arch_numa.c | 2 -
include/asm-generic/mmzone.h | 5 ++++
include/linux/numa.h | 3 ++
mm/numa.c | 3 ++
32 files changed, 22 insertions(+), 144 deletions(-)
--- a/arch/arm64/include/asm/Kbuild~arch-mm-move-definition-of-node_data-to-generic-code
+++ a/arch/arm64/include/asm/Kbuild
@@ -9,6 +9,7 @@ syscall-y += unistd_compat_32.h
generic-y += early_ioremap.h
generic-y += mcs_spinlock.h
+generic-y += mmzone.h
generic-y += qrwlock.h
generic-y += qspinlock.h
generic-y += parport.h
diff --git a/arch/arm64/include/asm/mmzone.h a/arch/arm64/include/asm/mmzone.h
deleted file mode 100644
--- a/arch/arm64/include/asm/mmzone.h
+++ /dev/null
@@ -1,13 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef __ASM_MMZONE_H
-#define __ASM_MMZONE_H
-
-#ifdef CONFIG_NUMA
-
-#include <asm/numa.h>
-
-extern struct pglist_data *node_data[];
-#define NODE_DATA(nid) (node_data[(nid)])
-
-#endif /* CONFIG_NUMA */
-#endif /* __ASM_MMZONE_H */
--- a/arch/arm64/include/asm/topology.h~arch-mm-move-definition-of-node_data-to-generic-code
+++ a/arch/arm64/include/asm/topology.h
@@ -5,6 +5,7 @@
#include <linux/cpumask.h>
#ifdef CONFIG_NUMA
+#include <asm/numa.h>
struct pci_bus;
int pcibus_to_node(struct pci_bus *bus);
--- a/arch/loongarch/include/asm/Kbuild~arch-mm-move-definition-of-node_data-to-generic-code
+++ a/arch/loongarch/include/asm/Kbuild
@@ -9,5 +9,6 @@ generic-y += qrwlock.h
generic-y += qspinlock.h
generic-y += user.h
generic-y += ioctl.h
+generic-y += mmzone.h
generic-y += statfs.h
generic-y += param.h
diff --git a/arch/loongarch/include/asm/mmzone.h a/arch/loongarch/include/asm/mmzone.h
deleted file mode 100644
--- a/arch/loongarch/include/asm/mmzone.h
+++ /dev/null
@@ -1,16 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- * Author: Huacai Chen (chenhuacai@xxxxxxxxxxx)
- * Copyright (C) 2020-2022 Loongson Technology Corporation Limited
- */
-#ifndef _ASM_MMZONE_H_
-#define _ASM_MMZONE_H_
-
-#include <asm/page.h>
-#include <asm/numa.h>
-
-extern struct pglist_data *node_data[];
-
-#define NODE_DATA(nid) (node_data[(nid)])
-
-#endif /* _ASM_MMZONE_H_ */
--- a/arch/loongarch/include/asm/topology.h~arch-mm-move-definition-of-node_data-to-generic-code
+++ a/arch/loongarch/include/asm/topology.h
@@ -8,6 +8,7 @@
#include <linux/smp.h>
#ifdef CONFIG_NUMA
+#include <asm/numa.h>
extern cpumask_t cpus_on_node[];
--- a/arch/loongarch/kernel/numa.c~arch-mm-move-definition-of-node_data-to-generic-code
+++ a/arch/loongarch/kernel/numa.c
@@ -27,10 +27,7 @@
#include <asm/time.h>
int numa_off;
-struct pglist_data *node_data[MAX_NUMNODES];
unsigned char node_distances[MAX_NUMNODES][MAX_NUMNODES];
-
-EXPORT_SYMBOL(node_data);
EXPORT_SYMBOL(node_distances);
static struct numa_meminfo numa_meminfo;
--- a/arch/mips/include/asm/mach-ip27/mmzone.h~arch-mm-move-definition-of-node_data-to-generic-code
+++ a/arch/mips/include/asm/mach-ip27/mmzone.h
@@ -24,8 +24,4 @@ extern struct node_data *__node_data[];
#define hub_data(n) (&__node_data[(n)]->hub)
-extern struct pglist_data *node_data[];
-
-#define NODE_DATA(nid) (node_data[nid])
-
#endif /* _ASM_MACH_MMZONE_H */
--- a/arch/mips/include/asm/mach-loongson64/mmzone.h~arch-mm-move-definition-of-node_data-to-generic-code
+++ a/arch/mips/include/asm/mach-loongson64/mmzone.h
@@ -14,10 +14,6 @@
#define pa_to_nid(addr) (((addr) & 0xf00000000000) >> NODE_ADDRSPACE_SHIFT)
#define nid_to_addrbase(nid) ((unsigned long)(nid) << NODE_ADDRSPACE_SHIFT)
-extern struct pglist_data *node_data[];
-
-#define NODE_DATA(n) (node_data[n])
-
extern void __init prom_init_numa_memory(void);
#endif /* _ASM_MACH_MMZONE_H */
--- a/arch/mips/loongson64/numa.c~arch-mm-move-definition-of-node_data-to-generic-code
+++ a/arch/mips/loongson64/numa.c
@@ -29,8 +29,6 @@
unsigned char __node_distances[MAX_NUMNODES][MAX_NUMNODES];
EXPORT_SYMBOL(__node_distances);
-struct pglist_data *node_data[MAX_NUMNODES];
-EXPORT_SYMBOL(node_data);
cpumask_t __node_cpumask[MAX_NUMNODES];
EXPORT_SYMBOL(__node_cpumask);
--- a/arch/mips/sgi-ip27/ip27-memory.c~arch-mm-move-definition-of-node_data-to-generic-code
+++ a/arch/mips/sgi-ip27/ip27-memory.c
@@ -34,9 +34,6 @@
#define SLOT_PFNSHIFT (SLOT_SHIFT - PAGE_SHIFT)
#define PFN_NASIDSHFT (NASID_SHFT - PAGE_SHIFT)
-struct pglist_data *node_data[MAX_NUMNODES];
-EXPORT_SYMBOL(node_data);
-
struct node_data *__node_data[MAX_NUMNODES];
EXPORT_SYMBOL(__node_data);
--- a/arch/powerpc/include/asm/mmzone.h~arch-mm-move-definition-of-node_data-to-generic-code
+++ a/arch/powerpc/include/asm/mmzone.h
@@ -20,12 +20,6 @@
#ifdef CONFIG_NUMA
-extern struct pglist_data *node_data[];
-/*
- * Return a pointer to the node data for node n.
- */
-#define NODE_DATA(nid) (node_data[nid])
-
/*
* Following are specific to this numa platform.
*/
--- a/arch/powerpc/mm/numa.c~arch-mm-move-definition-of-node_data-to-generic-code
+++ a/arch/powerpc/mm/numa.c
@@ -43,11 +43,9 @@ static char *cmdline __initdata;
int numa_cpu_lookup_table[NR_CPUS];
cpumask_var_t node_to_cpumask_map[MAX_NUMNODES];
-struct pglist_data *node_data[MAX_NUMNODES];
EXPORT_SYMBOL(numa_cpu_lookup_table);
EXPORT_SYMBOL(node_to_cpumask_map);
-EXPORT_SYMBOL(node_data);
static int primary_domain_index;
static int n_mem_addr_cells, n_mem_size_cells;
--- a/arch/riscv/include/asm/Kbuild~arch-mm-move-definition-of-node_data-to-generic-code
+++ a/arch/riscv/include/asm/Kbuild
@@ -5,6 +5,7 @@ syscall-y += syscall_table_64.h
generic-y += early_ioremap.h
generic-y += flat.h
generic-y += kvm_para.h
+generic-y += mmzone.h
generic-y += parport.h
generic-y += spinlock.h
generic-y += spinlock_types.h
diff --git a/arch/riscv/include/asm/mmzone.h a/arch/riscv/include/asm/mmzone.h
deleted file mode 100644
--- a/arch/riscv/include/asm/mmzone.h
+++ /dev/null
@@ -1,13 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef __ASM_MMZONE_H
-#define __ASM_MMZONE_H
-
-#ifdef CONFIG_NUMA
-
-#include <asm/numa.h>
-
-extern struct pglist_data *node_data[];
-#define NODE_DATA(nid) (node_data[(nid)])
-
-#endif /* CONFIG_NUMA */
-#endif /* __ASM_MMZONE_H */
--- a/arch/riscv/include/asm/topology.h~arch-mm-move-definition-of-node_data-to-generic-code
+++ a/arch/riscv/include/asm/topology.h
@@ -4,6 +4,10 @@
#include <linux/arch_topology.h>
+#ifdef CONFIG_NUMA
+#include <asm/numa.h>
+#endif
+
/* Replace task scheduler's default frequency-invariant accounting */
#define arch_scale_freq_tick topology_scale_freq_tick
#define arch_set_freq_scale topology_set_freq_scale
--- a/arch/s390/include/asm/Kbuild~arch-mm-move-definition-of-node_data-to-generic-code
+++ a/arch/s390/include/asm/Kbuild
@@ -7,3 +7,4 @@ generated-y += unistd_nr.h
generic-y += asm-offsets.h
generic-y += kvm_types.h
generic-y += mcs_spinlock.h
+generic-y += mmzone.h
diff --git a/arch/s390/include/asm/mmzone.h a/arch/s390/include/asm/mmzone.h
deleted file mode 100644
--- a/arch/s390/include/asm/mmzone.h
+++ /dev/null
@@ -1,17 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- * NUMA support for s390
- *
- * Copyright IBM Corp. 2015
- */
-
-#ifndef _ASM_S390_MMZONE_H
-#define _ASM_S390_MMZONE_H
-
-#ifdef CONFIG_NUMA
-
-extern struct pglist_data *node_data[];
-#define NODE_DATA(nid) (node_data[nid])
-
-#endif /* CONFIG_NUMA */
-#endif /* _ASM_S390_MMZONE_H */
--- a/arch/s390/kernel/numa.c~arch-mm-move-definition-of-node_data-to-generic-code
+++ a/arch/s390/kernel/numa.c
@@ -14,9 +14,6 @@
#include <linux/node.h>
#include <asm/numa.h>
-struct pglist_data *node_data[MAX_NUMNODES];
-EXPORT_SYMBOL(node_data);
-
void __init numa_setup(void)
{
int nid;
--- a/arch/sh/include/asm/mmzone.h~arch-mm-move-definition-of-node_data-to-generic-code
+++ a/arch/sh/include/asm/mmzone.h
@@ -5,9 +5,6 @@
#ifdef CONFIG_NUMA
#include <linux/numa.h>
-extern struct pglist_data *node_data[];
-#define NODE_DATA(nid) (node_data[nid])
-
static inline int pfn_to_nid(unsigned long pfn)
{
int nid;
--- a/arch/sh/mm/numa.c~arch-mm-move-definition-of-node_data-to-generic-code
+++ a/arch/sh/mm/numa.c
@@ -14,9 +14,6 @@
#include <linux/pfn.h>
#include <asm/sections.h>
-struct pglist_data *node_data[MAX_NUMNODES] __read_mostly;
-EXPORT_SYMBOL_GPL(node_data);
-
/*
* On SH machines the conventional approach is to stash system RAM
* in node 0, and other memory blocks in to node 1 and up, ordered by
--- a/arch/sparc/include/asm/mmzone.h~arch-mm-move-definition-of-node_data-to-generic-code
+++ a/arch/sparc/include/asm/mmzone.h
@@ -6,10 +6,6 @@
#include <linux/cpumask.h>
-extern struct pglist_data *node_data[];
-
-#define NODE_DATA(nid) (node_data[nid])
-
extern int numa_cpu_lookup_table[];
extern cpumask_t numa_cpumask_lookup_table[];
--- a/arch/sparc/mm/init_64.c~arch-mm-move-definition-of-node_data-to-generic-code
+++ a/arch/sparc/mm/init_64.c
@@ -1115,11 +1115,9 @@ static void init_node_masks_nonnuma(void
}
#ifdef CONFIG_NUMA
-struct pglist_data *node_data[MAX_NUMNODES];
EXPORT_SYMBOL(numa_cpu_lookup_table);
EXPORT_SYMBOL(numa_cpumask_lookup_table);
-EXPORT_SYMBOL(node_data);
static int scan_pio_for_cfg_handle(struct mdesc_handle *md, u64 pio,
u32 cfg_handle)
--- a/arch/x86/include/asm/Kbuild~arch-mm-move-definition-of-node_data-to-generic-code
+++ a/arch/x86/include/asm/Kbuild
@@ -11,3 +11,4 @@ generated-y += xen-hypercalls.h
generic-y += early_ioremap.h
generic-y += mcs_spinlock.h
+generic-y += mmzone.h
diff --git a/arch/x86/include/asm/mmzone_32.h a/arch/x86/include/asm/mmzone_32.h
deleted file mode 100644
--- a/arch/x86/include/asm/mmzone_32.h
+++ /dev/null
@@ -1,17 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- * Written by Pat Gaughen (gone@xxxxxxxxxx) Mar 2002
- *
- */
-
-#ifndef _ASM_X86_MMZONE_32_H
-#define _ASM_X86_MMZONE_32_H
-
-#include <asm/smp.h>
-
-#ifdef CONFIG_NUMA
-extern struct pglist_data *node_data[];
-#define NODE_DATA(nid) (node_data[nid])
-#endif /* CONFIG_NUMA */
-
-#endif /* _ASM_X86_MMZONE_32_H */
diff --git a/arch/x86/include/asm/mmzone_64.h a/arch/x86/include/asm/mmzone_64.h
deleted file mode 100644
--- a/arch/x86/include/asm/mmzone_64.h
+++ /dev/null
@@ -1,18 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/* K8 NUMA support */
-/* Copyright 2002,2003 by Andi Kleen, SuSE Labs */
-/* 2.5 Version loosely based on the NUMAQ Code by Pat Gaughen. */
-#ifndef _ASM_X86_MMZONE_64_H
-#define _ASM_X86_MMZONE_64_H
-
-#ifdef CONFIG_NUMA
-
-#include <linux/mmdebug.h>
-#include <asm/smp.h>
-
-extern struct pglist_data *node_data[];
-
-#define NODE_DATA(nid) (node_data[nid])
-
-#endif
-#endif /* _ASM_X86_MMZONE_64_H */
diff --git a/arch/x86/include/asm/mmzone.h a/arch/x86/include/asm/mmzone.h
deleted file mode 100644
--- a/arch/x86/include/asm/mmzone.h
+++ /dev/null
@@ -1,6 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifdef CONFIG_X86_32
-# include <asm/mmzone_32.h>
-#else
-# include <asm/mmzone_64.h>
-#endif
--- a/arch/x86/mm/numa.c~arch-mm-move-definition-of-node_data-to-generic-code
+++ a/arch/x86/mm/numa.c
@@ -24,9 +24,6 @@
int numa_off;
nodemask_t numa_nodes_parsed __initdata;
-struct pglist_data *node_data[MAX_NUMNODES] __read_mostly;
-EXPORT_SYMBOL(node_data);
-
static struct numa_meminfo numa_meminfo __initdata_or_meminfo;
static struct numa_meminfo numa_reserved_meminfo __initdata_or_meminfo;
--- a/drivers/base/arch_numa.c~arch-mm-move-definition-of-node_data-to-generic-code
+++ a/drivers/base/arch_numa.c
@@ -15,8 +15,6 @@
#include <asm/sections.h>
-struct pglist_data *node_data[MAX_NUMNODES] __read_mostly;
-EXPORT_SYMBOL(node_data);
nodemask_t numa_nodes_parsed __initdata;
static int cpu_to_node_map[NR_CPUS] = { [0 ... NR_CPUS-1] = NUMA_NO_NODE };
diff --git a/include/asm-generic/mmzone.h a/include/asm-generic/mmzone.h
new file mode 100644
--- /dev/null
+++ a/include/asm-generic/mmzone.h
@@ -0,0 +1,5 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _ASM_GENERIC_MMZONE_H
+#define _ASM_GENERIC_MMZONE_H
+
+#endif
--- a/include/linux/numa.h~arch-mm-move-definition-of-node_data-to-generic-code
+++ a/include/linux/numa.h
@@ -30,6 +30,9 @@ static inline bool numa_valid_node(int n
#ifdef CONFIG_NUMA
#include <asm/sparsemem.h>
+extern struct pglist_data *node_data[];
+#define NODE_DATA(nid) (node_data[nid])
+
/* Generic implementation available */
int numa_nearest_node(int node, unsigned int state);
--- a/mm/numa.c~arch-mm-move-definition-of-node_data-to-generic-code
+++ a/mm/numa.c
@@ -3,6 +3,9 @@
#include <linux/printk.h>
#include <linux/numa.h>
+struct pglist_data *node_data[MAX_NUMNODES];
+EXPORT_SYMBOL(node_data);
+
/* Stub functions: */
#ifndef memory_add_physaddr_to_nid
_
Patches currently in -mm which might be from rppt@xxxxxxxxxx are
