函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:mm\percpu-vm.c Create Date:2022-07-27 15:51:25
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：pcpu_unmap_pages - unmap pages out of a pcpu_chunk*@chunk: chunk of interest*@pages: pages array which can be used to pass information to free*@page_start: page index of the first page to unmap*@page_end: page index of the last page to unmap + 1

函数原型：static void pcpu_unmap_pages(struct pcpu_chunk *chunk, struct page **pages, int page_start, int page_end)

返回类型：void

参数：

类型参数名称
struct pcpu_chunk *chunk
struct page **pages
intpage_start
intpage_end
158  遍历可用CPU(cpu)
159  以i小于page_end循环
162  page等于mm/percpu-vm.c - vmalloc area based chunk allocation* Copyright (C) 2010 SUSE Linux Products GmbH* Copyright (C) 2010 Tejun Heo * Chunks are mapped into vmalloc areas and populated page by page.* This is the default chunk allocator.
163  WARN_ON(!page)
164  pages[pcpu_page_idx(cpu, i)]等于page
166  __pcpu_unmap_pages(pcpu_chunk_addr(chunk, cpu, page_start), page_end - page_start)
调用者
名称描述
pcpu_depopulate_chunkpcpu_depopulate_chunk - depopulate and unmap an area of a pcpu_chunk*@chunk: chunk to depopulate*@page_start: the start page*@page_end: the end page* For each cpu, depopulate and unmap pages [@page_start,@page_end)* from @chunk.* CONTEXT: