linux-master/mm/percpu-vm.c

8  * Chunks are mapped into vmalloc areas and populated page by page.
13 static struct page *pcpu_chunk_page(struct pcpu_chunk *chunk,
25  * Returns pointer to array of pointers to struct page which can be indexed
32 static struct page **pcpu_get_pages(void)
34 	static struct page **pages;
48  * @page_start: page index of the first page to be freed
49  * @page_end: page index of the last page to be freed + 1
55 			    struct page **pages, int page_start, int page_end)
62 			struct page *page = pages[pcpu_page_idx(cpu, i)];
64 			if (page)
65 				__free_page(page);
74  * @page_start: page index of the first page to be allocated
75  * @page_end: page index of the last page to be allocated + 1
83 			    struct page **pages, int page_start, int page_end,
93 			struct page **pagep = &pages[pcpu_page_idx(cpu, i)];
118  * @page_start: page index of the first page to be flushed
119  * @page_end: page index of the last page to be flushed + 1
144  * @page_start: page index of the first page to unmap
145  * @page_end: page index of the last page to unmap + 1
154 			     struct page **pages, int page_start, int page_end)
161 			struct page *page;
163 			page = pcpu_chunk_page(chunk, cpu, i);
164 			WARN_ON(!page);
165 			pages[pcpu_page_idx(cpu, i)] = page;
175  * @page_start: page index of the first page to be flushed
176  * @page_end: page index of the last page to be flushed + 1
193 static int __pcpu_map_pages(unsigned long addr, struct page **pages,
204  * @page_start: page index of the first page to map
205  * @page_end: page index of the last page to map + 1
215 			  struct page **pages, int page_start, int page_end)
246  * @page_start: page index of the first page to be flushed
247  * @page_end: page index of the last page to be flushed + 1
266  * @page_start: the start page
267  * @page_end: the end page
279 	struct page **pages;
300  * @page_start: the start page
301  * @page_end: the end page
315 	struct page **pages;
371 static struct page *pcpu_addr_to_page(void *addr)