The patch titled
Subject: mm: make range-to-target_node lookup facility a part of numa_memblks
has been added to the -mm mm-unstable branch. Its filename is
mm-make-range-to-target_node-lookup-facility-a-part-of-numa_memblks.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-make-range-to-target_node-lookup-facility-a-part-of-numa_memblks.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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The -mm tree is included into linux-next via the mm-everything
branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: "Mike Rapoport (Microsoft)" <rppt@xxxxxxxxxx>
Subject: mm: make range-to-target_node lookup facility a part of numa_memblks
Date: Wed, 7 Aug 2024 09:41:09 +0300
The x86 implementation of range-to-target_node lookup (i.e.
phys_to_target_node() and memory_add_physaddr_to_nid()) relies on
numa_memblks.
Since numa_memblks are now part of the generic code, move these functions
from x86 to mm/numa_memblks.c and select CONFIG_NUMA_KEEP_MEMINFO when
CONFIG_NUMA_MEMBLKS=y for dax and cxl.
Link: https://lkml.kernel.org/r/20240807064110.1003856-26-rppt@xxxxxxxxxx
Signed-off-by: Mike Rapoport (Microsoft) <rppt@xxxxxxxxxx>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>
Tested-by: Zi Yan <ziy@xxxxxxxxxx> # for x86_64 and arm64
Tested-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx> [arm64 + CXL via QEMU]
Reviewed-by: Dan Williams <dan.j.williams@xxxxxxxxx>
Acked-by: David Hildenbrand <david@xxxxxxxxxx>
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: Davidlohr Bueso <dave@xxxxxxxxxxxx>
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/x86/include/asm/sparsemem.h | 9 ------
arch/x86/mm/numa.c | 38 -----------------------------
drivers/cxl/Kconfig | 2 -
drivers/dax/Kconfig | 2 -
include/linux/numa_memblks.h | 7 +++++
mm/numa.c | 1
mm/numa_memblks.c | 38 +++++++++++++++++++++++++++++
7 files changed, 48 insertions(+), 49 deletions(-)
--- a/arch/x86/include/asm/sparsemem.h~mm-make-range-to-target_node-lookup-facility-a-part-of-numa_memblks
+++ a/arch/x86/include/asm/sparsemem.h
@@ -31,13 +31,4 @@
#endif /* CONFIG_SPARSEMEM */
-#ifndef __ASSEMBLY__
-#ifdef CONFIG_NUMA_KEEP_MEMINFO
-extern int phys_to_target_node(phys_addr_t start);
-#define phys_to_target_node phys_to_target_node
-extern int memory_add_physaddr_to_nid(u64 start);
-#define memory_add_physaddr_to_nid memory_add_physaddr_to_nid
-#endif
-#endif /* __ASSEMBLY__ */
-
#endif /* _ASM_X86_SPARSEMEM_H */
--- a/arch/x86/mm/numa.c~mm-make-range-to-target_node-lookup-facility-a-part-of-numa_memblks
+++ a/arch/x86/mm/numa.c
@@ -453,41 +453,3 @@ u64 __init numa_emu_dma_end(void)
return PFN_PHYS(MAX_DMA32_PFN);
}
#endif /* CONFIG_NUMA_EMU */
-
-#ifdef CONFIG_NUMA_KEEP_MEMINFO
-static int meminfo_to_nid(struct numa_meminfo *mi, u64 start)
-{
- int i;
-
- for (i = 0; i < mi->nr_blks; i++)
- if (mi->blk[i].start <= start && mi->blk[i].end > start)
- return mi->blk[i].nid;
- return NUMA_NO_NODE;
-}
-
-int phys_to_target_node(phys_addr_t start)
-{
- int nid = meminfo_to_nid(&numa_meminfo, start);
-
- /*
- * Prefer online nodes, but if reserved memory might be
- * hot-added continue the search with reserved ranges.
- */
- if (nid != NUMA_NO_NODE)
- return nid;
-
- return meminfo_to_nid(&numa_reserved_meminfo, start);
-}
-EXPORT_SYMBOL_GPL(phys_to_target_node);
-
-int memory_add_physaddr_to_nid(u64 start)
-{
- int nid = meminfo_to_nid(&numa_meminfo, start);
-
- if (nid == NUMA_NO_NODE)
- nid = numa_meminfo.blk[0].nid;
- return nid;
-}
-EXPORT_SYMBOL_GPL(memory_add_physaddr_to_nid);
-
-#endif
--- a/drivers/cxl/Kconfig~mm-make-range-to-target_node-lookup-facility-a-part-of-numa_memblks
+++ a/drivers/cxl/Kconfig
@@ -6,7 +6,7 @@ menuconfig CXL_BUS
select FW_UPLOAD
select PCI_DOE
select FIRMWARE_TABLE
- select NUMA_KEEP_MEMINFO if (NUMA && X86)
+ select NUMA_KEEP_MEMINFO if NUMA_MEMBLKS
help
CXL is a bus that is electrically compatible with PCI Express, but
layers three protocols on that signalling (CXL.io, CXL.cache, and
--- a/drivers/dax/Kconfig~mm-make-range-to-target_node-lookup-facility-a-part-of-numa_memblks
+++ a/drivers/dax/Kconfig
@@ -30,7 +30,7 @@ config DEV_DAX_PMEM
config DEV_DAX_HMEM
tristate "HMEM DAX: direct access to 'specific purpose' memory"
depends on EFI_SOFT_RESERVE
- select NUMA_KEEP_MEMINFO if (NUMA && X86)
+ select NUMA_KEEP_MEMINFO if NUMA_MEMBLKS
default DEV_DAX
help
EFI 2.8 platforms, and others, may advertise 'specific purpose'
--- a/include/linux/numa_memblks.h~mm-make-range-to-target_node-lookup-facility-a-part-of-numa_memblks
+++ a/include/linux/numa_memblks.h
@@ -46,6 +46,13 @@ static inline int numa_emu_cmdline(char
}
#endif /* CONFIG_NUMA_EMU */
+#ifdef CONFIG_NUMA_KEEP_MEMINFO
+extern int phys_to_target_node(phys_addr_t start);
+#define phys_to_target_node phys_to_target_node
+extern int memory_add_physaddr_to_nid(u64 start);
+#define memory_add_physaddr_to_nid memory_add_physaddr_to_nid
+#endif /* CONFIG_NUMA_KEEP_MEMINFO */
+
#endif /* CONFIG_NUMA_MEMBLKS */
#endif /* __NUMA_MEMBLKS_H */
--- a/mm/numa.c~mm-make-range-to-target_node-lookup-facility-a-part-of-numa_memblks
+++ a/mm/numa.c
@@ -3,6 +3,7 @@
#include <linux/memblock.h>
#include <linux/printk.h>
#include <linux/numa.h>
+#include <linux/numa_memblks.h>
struct pglist_data *node_data[MAX_NUMNODES];
EXPORT_SYMBOL(node_data);
--- a/mm/numa_memblks.c~mm-make-range-to-target_node-lookup-facility-a-part-of-numa_memblks
+++ a/mm/numa_memblks.c
@@ -531,3 +531,41 @@ int __init numa_fill_memblks(u64 start,
}
return 0;
}
+
+#ifdef CONFIG_NUMA_KEEP_MEMINFO
+static int meminfo_to_nid(struct numa_meminfo *mi, u64 start)
+{
+ int i;
+
+ for (i = 0; i < mi->nr_blks; i++)
+ if (mi->blk[i].start <= start && mi->blk[i].end > start)
+ return mi->blk[i].nid;
+ return NUMA_NO_NODE;
+}
+
+int phys_to_target_node(phys_addr_t start)
+{
+ int nid = meminfo_to_nid(&numa_meminfo, start);
+
+ /*
+ * Prefer online nodes, but if reserved memory might be
+ * hot-added continue the search with reserved ranges.
+ */
+ if (nid != NUMA_NO_NODE)
+ return nid;
+
+ return meminfo_to_nid(&numa_reserved_meminfo, start);
+}
+EXPORT_SYMBOL_GPL(phys_to_target_node);
+
+int memory_add_physaddr_to_nid(u64 start)
+{
+ int nid = meminfo_to_nid(&numa_meminfo, start);
+
+ if (nid == NUMA_NO_NODE)
+ nid = numa_meminfo.blk[0].nid;
+ return nid;
+}
+EXPORT_SYMBOL_GPL(memory_add_physaddr_to_nid);
+
+#endif /* CONFIG_NUMA_KEEP_MEMINFO */
_
Patches currently in -mm which might be from rppt@xxxxxxxxxx are
mm-move-kernel-numac-to-mm.patch
mips-sgi-ip27-make-node_data-the-same-as-on-all-other-architectures.patch
mips-sgi-ip27-ensure-node_possible_map-only-contains-valid-nodes.patch
mips-sgi-ip27-drop-have_arch_nodedata_extension.patch
mips-loongson64-rename-__node_data-to-node_data.patch
mips-loongson64-drop-have_arch_nodedata_extension.patch
arch-mm-move-definition-of-node_data-to-generic-code.patch
mm-drop-config_have_arch_nodedata_extension.patch
arch-mm-pull-out-allocation-of-node_data-to-generic-code.patch
x86-numa-simplify-numa_distance-allocation.patch
x86-numa-use-get_pfn_range_for_nid-to-verify-that-node-spans-memory.patch
x86-numa-move-fake_node_-defines-to-numa_emu.patch
x86-numa_emu-simplify-allocation-of-phys_dist.patch
x86-numa_emu-split-__apicid_to_node-update-to-a-helper-function.patch
x86-numa_emu-use-a-helper-function-to-get-max_dma32_pfn.patch
x86-numa-numa_addremove_cpu-make-cpu-parameter-unsigned.patch
mm-introduce-numa_memblks.patch
mm-move-numa_distance-and-related-code-from-x86-to-numa_memblks.patch
mm-introduce-numa_emulation.patch
mm-numa_memblks-introduce-numa_memblks_init.patch
mm-numa_memblks-make-several-functions-and-variables-static.patch
mm-numa_memblks-use-memblock_startend_of_dram-when-sanitizing-meminfo.patch
of-numa-return-einval-when-no-numa-node-id-is-found.patch
arch_numa-switch-over-to-numa_memblks.patch
arch_numa-switch-over-to-numa_memblks-fix.patch
mm-make-range-to-target_node-lookup-facility-a-part-of-numa_memblks.patch
docs-move-numa=fake-description-to-kernel-parameterstxt.patch
