linux/mm/numa.c
Mike Rapoport (Microsoft) ec164cf1dd mm: drop CONFIG_HAVE_ARCH_NODEDATA_EXTENSION
There are no users of HAVE_ARCH_NODEDATA_EXTENSION left, so
arch_alloc_nodedata() and arch_refresh_nodedata() are not needed anymore.

Replace the call to arch_alloc_nodedata() in free_area_init() with a new
helper alloc_offline_node_data(), remove arch_refresh_nodedata() and
cleanup include/linux/memory_hotplug.h from the associated ifdefery.

Link: https://lkml.kernel.org/r/20240807064110.1003856-9-rppt@kernel.org
Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Tested-by: Zi Yan <ziy@nvidia.com> # for x86_64 and arm64
Acked-by: Dan Williams <dan.j.williams@intel.com>
Cc: Alexander Gordeev <agordeev@linux.ibm.com>
Cc: Andreas Larsson <andreas@gaisler.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Davidlohr Bueso <dave@stgolabs.net>
Cc: David S. Miller <davem@davemloft.net>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Huacai Chen <chenhuacai@kernel.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiaxun Yang <jiaxun.yang@flygoat.com>
Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Cc: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Rafael J. Wysocki <rafael@kernel.org>
Cc: Rob Herring (Arm) <robh@kernel.org>
Cc: Samuel Holland <samuel.holland@sifive.com>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2024-09-03 21:15:28 -07:00

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C

// SPDX-License-Identifier: GPL-2.0-or-later
#include <linux/printk.h>
#include <linux/numa.h>
struct pglist_data *node_data[MAX_NUMNODES];
EXPORT_SYMBOL(node_data);
void __init alloc_offline_node_data(int nid)
{
pg_data_t *pgdat;
pgdat = memblock_alloc(sizeof(*pgdat), SMP_CACHE_BYTES);
if (!pgdat)
panic("Cannot allocate %zuB for node %d.\n",
sizeof(*pgdat), nid);
node_data[nid] = pgdat;
}
/* Stub functions: */
#ifndef memory_add_physaddr_to_nid
int memory_add_physaddr_to_nid(u64 start)
{
pr_info_once("Unknown online node for memory at 0x%llx, assuming node 0\n",
start);
return 0;
}
EXPORT_SYMBOL_GPL(memory_add_physaddr_to_nid);
#endif
#ifndef phys_to_target_node
int phys_to_target_node(u64 start)
{
pr_info_once("Unknown target node for memory at 0x%llx, assuming node 0\n",
start);
return 0;
}
EXPORT_SYMBOL_GPL(phys_to_target_node);
#endif