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mm: remove early_pfn_in_nid() and CONFIG_NODES_SPAN_OTHER_NODES

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The memmap_init() function was made to iterate over memblock regions and
as the result the early_pfn_in_nid() function became obsolete.  Since
CONFIG_NODES_SPAN_OTHER_NODES is only used to pick a stub or a real
implementation of early_pfn_in_nid(), it is also not needed anymore.

Remove both early_pfn_in_nid() and the CONFIG_NODES_SPAN_OTHER_NODES.

Co-developed-by: Hoan Tran <Hoan@os.amperecomputing.com>
Signed-off-by: Hoan Tran <Hoan@os.amperecomputing.com>
Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Tested-by: Hoan Tran <hoan@os.amperecomputing.com>	[arm64]
Cc: Baoquan He <bhe@redhat.com>
Cc: Brian Cain <bcain@codeaurora.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Greentime Hu <green.hu@gmail.com>
Cc: Greg Ungerer <gerg@linux-m68k.org>
Cc: Guan Xuetao <gxt@pku.edu.cn>
Cc: Guo Ren <guoren@kernel.org>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Helge Deller <deller@gmx.de>
Cc: "James E.J. Bottomley" <James.Bottomley@HansenPartnership.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Ley Foon Tan <ley.foon.tan@intel.com>
Cc: Mark Salter <msalter@redhat.com>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Nick Hu <nickhu@andestech.com>
Cc: Paul Walmsley <paul.walmsley@sifive.com>
Cc: Richard Weinberger <richard@nod.at>
Cc: Rich Felker <dalias@libc.org>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Stafford Horne <shorne@gmail.com>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Vineet Gupta <vgupta@synopsys.com>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Link: http://lkml.kernel.org/r/20200412194859.12663-17-rppt@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Mike Rapoport
2020-06-03 15:57:59 -07:00
committed by Linus Torvalds
parent 73a6e474cb
commit acd3f5c441
4 changed files with 0 additions and 47 deletions
Download Patch File Download Diff File Expand all files Collapse all files

9
arch/powerpc/Kconfig
View File

@@ -686,15 +686,6 @@ config ARCH_MEMORY_PROBE
def_bool y def_bool y
depends on MEMORY_HOTPLUG depends on MEMORY_HOTPLUG
# Some NUMA nodes have memory ranges that span
# other nodes. Even though a pfn is valid and
# between a node's start and end pfns, it may not
# reside on that node. See memmap_init_zone()
# for details.
config NODES_SPAN_OTHER_NODES
def_bool y
depends on NEED_MULTIPLE_NODES
config STDBINUTILS config STDBINUTILS
bool "Using standard binutils settings" bool "Using standard binutils settings"
depends on 44x depends on 44x

9
arch/sparc/Kconfig
View File

@@ -286,15 +286,6 @@ config NODES_SHIFT
Specify the maximum number of NUMA Nodes available on the target Specify the maximum number of NUMA Nodes available on the target
system. Increases memory reserved to accommodate various tables. system. Increases memory reserved to accommodate various tables.
# Some NUMA nodes have memory ranges that span
# other nodes. Even though a pfn is valid and
# between a node's start and end pfns, it may not
# reside on that node. See memmap_init_zone()
# for details.
config NODES_SPAN_OTHER_NODES
def_bool y
depends on NEED_MULTIPLE_NODES
config ARCH_SPARSEMEM_ENABLE config ARCH_SPARSEMEM_ENABLE
def_bool y if SPARC64 def_bool y if SPARC64
select SPARSEMEM_VMEMMAP_ENABLE select SPARSEMEM_VMEMMAP_ENABLE

9
arch/x86/Kconfig
View File

@@ -1583,15 +1583,6 @@ config X86_64_ACPI_NUMA
---help--- ---help---
Enable ACPI SRAT based node topology detection. Enable ACPI SRAT based node topology detection.
# Some NUMA nodes have memory ranges that span
# other nodes. Even though a pfn is valid and
# between a node's start and end pfns, it may not
# reside on that node. See memmap_init_zone()
# for details.
config NODES_SPAN_OTHER_NODES
def_bool y
depends on X86_64_ACPI_NUMA
config NUMA_EMU config NUMA_EMU
bool "NUMA emulation" bool "NUMA emulation"
depends on NUMA depends on NUMA

20
mm/page_alloc.c
View File

@@ -1541,26 +1541,6 @@ int __meminit early_pfn_to_nid(unsigned long pfn)
} }
#endif /* CONFIG_NEED_MULTIPLE_NODES */ #endif /* CONFIG_NEED_MULTIPLE_NODES */
#ifdef CONFIG_NODES_SPAN_OTHER_NODES
/* Only safe to use early in boot when initialisation is single-threaded */
static inline bool __meminit early_pfn_in_nid(unsigned long pfn, int node)
{
int nid;
nid = __early_pfn_to_nid(pfn, &early_pfnnid_cache);
if (nid >= 0 && nid != node)
return false;
return true;
}
#else
static inline bool __meminit early_pfn_in_nid(unsigned long pfn, int node)
{
return true;
}
#endif
void __init memblock_free_pages(struct page *page, unsigned long pfn, void __init memblock_free_pages(struct page *page, unsigned long pfn,
unsigned int order) unsigned int order)
{ {