| sparse-vmemmap.c (0aea30a07ec6b50de0fc5f5b2ec34a68ead86b61) | sparse-vmemmap.c (47010c040dec8af6347ec6259104fc13f7e7e30a) |
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| 1// SPDX-License-Identifier: GPL-2.0 2/* 3 * Virtual Memory Map support 4 * 5 * (C) 2007 sgi. Christoph Lameter. 6 * 7 * Virtual memory maps allow VM primitives pfn_to_page, page_to_pfn, 8 * virt_to_page, page_address() to be implemented as a base offset --- 20 unchanged lines hidden (view full) --- 29#include <linux/sched.h> 30#include <linux/pgtable.h> 31#include <linux/bootmem_info.h> 32 33#include <asm/dma.h> 34#include <asm/pgalloc.h> 35#include <asm/tlbflush.h> 36 | 1// SPDX-License-Identifier: GPL-2.0 2/* 3 * Virtual Memory Map support 4 * 5 * (C) 2007 sgi. Christoph Lameter. 6 * 7 * Virtual memory maps allow VM primitives pfn_to_page, page_to_pfn, 8 * virt_to_page, page_address() to be implemented as a base offset --- 20 unchanged lines hidden (view full) --- 29#include <linux/sched.h> 30#include <linux/pgtable.h> 31#include <linux/bootmem_info.h> 32 33#include <asm/dma.h> 34#include <asm/pgalloc.h> 35#include <asm/tlbflush.h> 36 |
| 37#ifdef CONFIG_HUGETLB_PAGE_FREE_VMEMMAP | 37#ifdef CONFIG_HUGETLB_PAGE_OPTIMIZE_VMEMMAP |
| 38/** 39 * struct vmemmap_remap_walk - walk vmemmap page table 40 * 41 * @remap_pte: called for each lowest-level entry (PTE). 42 * @nr_walked: the number of walked pte. 43 * @reuse_page: the page which is reused for the tail vmemmap pages. 44 * @reuse_addr: the virtual address of the @reuse_page page. 45 * @vmemmap_pages: the list head of the vmemmap pages that can be freed --- 369 unchanged lines hidden (view full) --- 415 return -ENOMEM; 416 417 mmap_read_lock(&init_mm); 418 vmemmap_remap_range(reuse, end, &walk); 419 mmap_read_unlock(&init_mm); 420 421 return 0; 422} | 38/** 39 * struct vmemmap_remap_walk - walk vmemmap page table 40 * 41 * @remap_pte: called for each lowest-level entry (PTE). 42 * @nr_walked: the number of walked pte. 43 * @reuse_page: the page which is reused for the tail vmemmap pages. 44 * @reuse_addr: the virtual address of the @reuse_page page. 45 * @vmemmap_pages: the list head of the vmemmap pages that can be freed --- 369 unchanged lines hidden (view full) --- 415 return -ENOMEM; 416 417 mmap_read_lock(&init_mm); 418 vmemmap_remap_range(reuse, end, &walk); 419 mmap_read_unlock(&init_mm); 420 421 return 0; 422} |
| 423#endif /* CONFIG_HUGETLB_PAGE_FREE_VMEMMAP */ | 423#endif /* CONFIG_HUGETLB_PAGE_OPTIMIZE_VMEMMAP */ |
| 424 425/* 426 * Allocate a block of memory to be used to back the virtual memory map 427 * or to back the page tables that are used to create the mapping. 428 * Uses the main allocators if they are available, else bootmem. 429 */ 430 431static void * __ref __earlyonly_bootmem_alloc(int node, --- 226 unchanged lines hidden --- | 424 425/* 426 * Allocate a block of memory to be used to back the virtual memory map 427 * or to back the page tables that are used to create the mapping. 428 * Uses the main allocators if they are available, else bootmem. 429 */ 430 431static void * __ref __earlyonly_bootmem_alloc(int node, --- 226 unchanged lines hidden --- |