[PATCH v4 25/26] mm: make range-to-target_node lookup facility a part of numa_memblks
From: Mike Rapoport <rppt@kernel.org>
Date: 2024-08-07 06:46:30
Also in:
linux-acpi, linux-arch, linux-arm-kernel, linux-cxl, linux-devicetree, linux-doc, linux-mips, linux-riscv, linux-s390, linux-sh, lkml, loongarch, nvdimm, sparclinux
Subsystem:
compute express link (cxl), device direct access (dax), memory management, memory management - numa memblocks and numa emulation, the rest, x86 architecture (32-bit and 64-bit), x86 mm · Maintainers:
Davidlohr Bueso, Jonathan Cameron, Dave Jiang, Alison Schofield, Vishal Verma, Ira Weiny, Dan Williams, Andrew Morton, Mike Rapoport, Linus Torvalds, Thomas Gleixner, Ingo Molnar, Borislav Petkov, Dave Hansen, Andy Lutomirski, Peter Zijlstra
From: "Mike Rapoport (Microsoft)" <rppt@kernel.org> 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. Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Tested-by: Zi Yan <ziy@nvidia.com> # for x86_64 and arm64 Tested-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> [arm64 + CXL via QEMU] Reviewed-by: Dan Williams <redacted> Acked-by: David Hildenbrand <redacted> --- 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(-)
diff --git a/arch/x86/include/asm/sparsemem.h b/arch/x86/include/asm/sparsemem.h
index 64df897c0ee3..3918c7a434f5 100644
--- a/arch/x86/include/asm/sparsemem.h
+++ b/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 */
diff --git a/arch/x86/mm/numa.c b/arch/x86/mm/numa.c
index d23287611449..64e5cdb2460a 100644
--- a/arch/x86/mm/numa.c
+++ b/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
diff --git a/drivers/cxl/Kconfig b/drivers/cxl/Kconfig
index 99b5c25be079..29c192f20082 100644
--- a/drivers/cxl/Kconfig
+++ b/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
diff --git a/drivers/dax/Kconfig b/drivers/dax/Kconfig
index a88744244149..d656e4c0eb84 100644
--- a/drivers/dax/Kconfig
+++ b/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'
diff --git a/include/linux/numa_memblks.h b/include/linux/numa_memblks.h
index 5c6e12ad0b7a..17d4bcc34091 100644
--- a/include/linux/numa_memblks.h
+++ b/include/linux/numa_memblks.h@@ -46,6 +46,13 @@ static inline int numa_emu_cmdline(char *str) } #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 */
diff --git a/mm/numa.c b/mm/numa.c
index 1f1582dcdf4a..e2eec07707d1 100644
--- a/mm/numa.c
+++ b/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);
diff --git a/mm/numa_memblks.c b/mm/numa_memblks.c
index c4037faa438b..a28507cf1e7f 100644
--- a/mm/numa_memblks.c
+++ b/mm/numa_memblks.c@@ -531,3 +531,41 @@ int __init numa_fill_memblks(u64 start, u64 end) } 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 */
--
2.43.0