The patch titled
Subject: mm: numa_memblks: introduce numa_memblks_init
has been added to the -mm mm-unstable branch. Its filename is
mm-numa_memblks-introduce-numa_memblks_init.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-numa_memblks-introduce-numa_memblks_init.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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------------------------------------------------------
From: "Mike Rapoport (Microsoft)" <rppt@xxxxxxxxxx>
Subject: mm: numa_memblks: introduce numa_memblks_init
Date: Thu, 1 Aug 2024 09:08:20 +0300
Move most of x86::numa_init() to numa_memblks so that the latter will be
more self-contained.
With this numa_memblk data structures should not be exposed to the
architecture specific code.
Link: https://lkml.kernel.org/r/20240801060826.559858-21-rppt@xxxxxxxxxx
Signed-off-by: Mike Rapoport (Microsoft) <rppt@xxxxxxxxxx>
Tested-by: Zi Yan <ziy@xxxxxxxxxx> [x86_64 and arm64]
Tested-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx> [arm64 + CXL via QEMU]
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@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: Dan Williams <dan.j.williams@xxxxxxxxx>
Cc: Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>
Cc: David Hildenbrand <david@xxxxxxxxxx>
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/mm/numa.c | 40 +++-----------------------------
include/linux/numa_memblks.h | 3 ++
mm/numa_memblks.c | 41 +++++++++++++++++++++++++++++++++
3 files changed, 48 insertions(+), 36 deletions(-)
--- a/arch/x86/mm/numa.c~mm-numa_memblks-introduce-numa_memblks_init
+++ a/arch/x86/mm/numa.c
@@ -115,13 +115,9 @@ void __init setup_node_to_cpumask_map(vo
pr_debug("Node to cpumask map for %u nodes\n", nr_node_ids);
}
-static int __init numa_register_memblks(struct numa_meminfo *mi)
+static int __init numa_register_nodes(void)
{
- int nid, err;
-
- err = numa_register_meminfo(mi);
- if (err)
- return err;
+ int nid;
if (!memblock_validate_numa_coverage(SZ_1M))
return -EINVAL;
@@ -171,39 +167,11 @@ static int __init numa_init(int (*init_f
for (i = 0; i < MAX_LOCAL_APIC; i++)
set_apicid_to_node(i, NUMA_NO_NODE);
- nodes_clear(numa_nodes_parsed);
- nodes_clear(node_possible_map);
- nodes_clear(node_online_map);
- memset(&numa_meminfo, 0, sizeof(numa_meminfo));
- WARN_ON(memblock_set_node(0, ULLONG_MAX, &memblock.memory,
- NUMA_NO_NODE));
- WARN_ON(memblock_set_node(0, ULLONG_MAX, &memblock.reserved,
- NUMA_NO_NODE));
- /* In case that parsing SRAT failed. */
- WARN_ON(memblock_clear_hotplug(0, ULLONG_MAX));
- numa_reset_distance();
-
- ret = init_func();
+ ret = numa_memblks_init(init_func, /* memblock_force_top_down */ true);
if (ret < 0)
return ret;
- /*
- * We reset memblock back to the top-down direction
- * here because if we configured ACPI_NUMA, we have
- * parsed SRAT in init_func(). It is ok to have the
- * reset here even if we did't configure ACPI_NUMA
- * or acpi numa init fails and fallbacks to dummy
- * numa init.
- */
- memblock_set_bottom_up(false);
-
- ret = numa_cleanup_meminfo(&numa_meminfo);
- if (ret < 0)
- return ret;
-
- numa_emulation(&numa_meminfo, numa_distance_cnt);
-
- ret = numa_register_memblks(&numa_meminfo);
+ ret = numa_register_nodes();
if (ret < 0)
return ret;
--- a/include/linux/numa_memblks.h~mm-numa_memblks-introduce-numa_memblks_init
+++ a/include/linux/numa_memblks.h
@@ -34,6 +34,9 @@ int __init numa_register_meminfo(struct
void __init numa_nodemask_from_meminfo(nodemask_t *nodemask,
const struct numa_meminfo *mi);
+int __init numa_memblks_init(int (*init_func)(void),
+ bool memblock_force_top_down);
+
#ifdef CONFIG_NUMA_EMU
int numa_emu_cmdline(char *str);
void __init numa_emu_update_cpu_to_node(int *emu_nid_to_phys,
--- a/mm/numa_memblks.c~mm-numa_memblks-introduce-numa_memblks_init
+++ a/mm/numa_memblks.c
@@ -415,6 +415,47 @@ int __init numa_register_meminfo(struct
return 0;
}
+int __init numa_memblks_init(int (*init_func)(void),
+ bool memblock_force_top_down)
+{
+ int ret;
+
+ nodes_clear(numa_nodes_parsed);
+ nodes_clear(node_possible_map);
+ nodes_clear(node_online_map);
+ memset(&numa_meminfo, 0, sizeof(numa_meminfo));
+ WARN_ON(memblock_set_node(0, ULLONG_MAX, &memblock.memory,
+ NUMA_NO_NODE));
+ WARN_ON(memblock_set_node(0, ULLONG_MAX, &memblock.reserved,
+ NUMA_NO_NODE));
+ /* In case that parsing SRAT failed. */
+ WARN_ON(memblock_clear_hotplug(0, ULLONG_MAX));
+ numa_reset_distance();
+
+ ret = init_func();
+ if (ret < 0)
+ return ret;
+
+ /*
+ * We reset memblock back to the top-down direction
+ * here because if we configured ACPI_NUMA, we have
+ * parsed SRAT in init_func(). It is ok to have the
+ * reset here even if we did't configure ACPI_NUMA
+ * or acpi numa init fails and fallbacks to dummy
+ * numa init.
+ */
+ if (memblock_force_top_down)
+ memblock_set_bottom_up(false);
+
+ ret = numa_cleanup_meminfo(&numa_meminfo);
+ if (ret < 0)
+ return ret;
+
+ numa_emulation(&numa_meminfo, numa_distance_cnt);
+
+ return numa_register_meminfo(&numa_meminfo);
+}
+
static int __init cmp_memblk(const void *a, const void *b)
{
const struct numa_memblk *ma = *(const struct numa_memblk **)a;
_
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
mm-drop-config_have_arch_nodedata_extension.patch
arch-mm-move-definition-of-node_data-to-generic-code.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
mm-make-range-to-target_node-lookup-facility-a-part-of-numa_memblks.patch
docs-move-numa=fake-description-to-kernel-parameterstxt.patch
