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c6f239796b
Before SLUB initialization, various subsystems used memblock_alloc to allocate memory. In most cases, when memory allocation fails, an immediate panic is required. To simplify this behavior and reduce repetitive checks, introduce `memblock_alloc_or_panic`. This function ensures that memory allocation failures result in a panic automatically, improving code readability and consistency across subsystems that require this behavior. [guoweikang.kernel@gmail.com: arch/s390: save_area_alloc default failure behavior changed to panic] Link: https://lkml.kernel.org/r/20250109033136.2845676-1-guoweikang.kernel@gmail.com Link: https://lore.kernel.org/lkml/Z2fknmnNtiZbCc7x@kernel.org/ Link: https://lkml.kernel.org/r/20250102072528.650926-1-guoweikang.kernel@gmail.com Signed-off-by: Guo Weikang <guoweikang.kernel@gmail.com> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> [m68k] Reviewed-by: Alexander Gordeev <agordeev@linux.ibm.com> [s390] Acked-by: Mike Rapoport (Microsoft) <rppt@kernel.org> Cc: Alexander Gordeev <agordeev@linux.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
63 lines
1.6 KiB
C
63 lines
1.6 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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#include <linux/memblock.h>
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#include <linux/printk.h>
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#include <linux/numa.h>
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#include <linux/numa_memblks.h>
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struct pglist_data *node_data[MAX_NUMNODES];
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EXPORT_SYMBOL(node_data);
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/* Allocate NODE_DATA for a node on the local memory */
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void __init alloc_node_data(int nid)
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{
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const size_t nd_size = roundup(sizeof(pg_data_t), SMP_CACHE_BYTES);
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u64 nd_pa;
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void *nd;
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int tnid;
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/* Allocate node data. Try node-local memory and then any node. */
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nd_pa = memblock_phys_alloc_try_nid(nd_size, SMP_CACHE_BYTES, nid);
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if (!nd_pa)
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panic("Cannot allocate %zu bytes for node %d data\n",
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nd_size, nid);
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nd = __va(nd_pa);
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/* report and initialize */
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pr_info("NODE_DATA(%d) allocated [mem %#010Lx-%#010Lx]\n", nid,
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nd_pa, nd_pa + nd_size - 1);
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tnid = early_pfn_to_nid(nd_pa >> PAGE_SHIFT);
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if (tnid != nid)
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pr_info(" NODE_DATA(%d) on node %d\n", nid, tnid);
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node_data[nid] = nd;
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memset(NODE_DATA(nid), 0, sizeof(pg_data_t));
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}
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void __init alloc_offline_node_data(int nid)
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{
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pg_data_t *pgdat;
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node_data[nid] = memblock_alloc_or_panic(sizeof(*pgdat), SMP_CACHE_BYTES);
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}
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/* Stub functions: */
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#ifndef memory_add_physaddr_to_nid
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int memory_add_physaddr_to_nid(u64 start)
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{
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pr_info_once("Unknown online node for memory at 0x%llx, assuming node 0\n",
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start);
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return 0;
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}
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EXPORT_SYMBOL_GPL(memory_add_physaddr_to_nid);
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#endif
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#ifndef phys_to_target_node
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int phys_to_target_node(u64 start)
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{
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pr_info_once("Unknown target node for memory at 0x%llx, assuming node 0\n",
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start);
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return 0;
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}
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EXPORT_SYMBOL_GPL(phys_to_target_node);
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#endif
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