linux-master/mm/percpu-vm.c

49  * @page_end: page index of the last page to be freed + 1
51  * Free pages [@page_start and @page_end) in @pages for all units.
55 			    struct page **pages, int page_start, int page_end)
61 		for (i = page_start; i < page_end; i++) {
75  * @page_end: page index of the last page to be allocated + 1
78  * Allocate pages [@page_start,@page_end) into @pages for all units.
83 			    struct page **pages, int page_start, int page_end,
92 		for (i = page_start; i < page_end; i++) {
109 		for (i = page_start; i < page_end; i++)
119  * @page_end: page index of the last page to be flushed + 1
121  * Pages in [@page_start,@page_end) of @chunk are about to be
128 				 int page_start, int page_end)
132 		pcpu_chunk_addr(chunk, pcpu_high_unit_cpu, page_end));
145  * @page_end: page index of the last page to unmap + 1
147  * For each cpu, unmap pages [@page_start,@page_end) out of @chunk.
154 			     struct page **pages, int page_start, int page_end)
160 		for (i = page_start; i < page_end; i++) {
168 				   page_end - page_start);
176  * @page_end: page index of the last page to be flushed + 1
178  * Pages [@page_start,@page_end) of @chunk have been unmapped.  Flush
186 				      int page_start, int page_end)
190 		pcpu_chunk_addr(chunk, pcpu_high_unit_cpu, page_end));
205  * @page_end: page index of the last page to map + 1
207  * For each cpu, map pages [@page_start,@page_end) into @chunk.  The
215 			  struct page **pages, int page_start, int page_end)
223 				       page_end - page_start);
227 		for (i = page_start; i < page_end; i++)
237 				   page_end - page_start);
239 	pcpu_post_unmap_tlb_flush(chunk, page_start, page_end);
247  * @page_end: page index of the last page to be flushed + 1
249  * Pages [@page_start,@page_end) of @chunk have been mapped.  Flush
256 				int page_start, int page_end)
260 		pcpu_chunk_addr(chunk, pcpu_high_unit_cpu, page_end));
267  * @page_end: the end page
270  * For each cpu, populate and map pages [@page_start,@page_end) into
277 			       int page_start, int page_end, gfp_t gfp)
285 	if (pcpu_alloc_pages(chunk, pages, page_start, page_end, gfp))
288 	if (pcpu_map_pages(chunk, pages, page_start, page_end)) {
289 		pcpu_free_pages(chunk, pages, page_start, page_end);
292 	pcpu_post_map_flush(chunk, page_start, page_end);
301  * @page_end: the end page
303  * For each cpu, depopulate and unmap pages [@page_start,@page_end)
313 				  int page_start, int page_end)
326 	pcpu_pre_unmap_flush(chunk, page_start, page_end);
328 	pcpu_unmap_pages(chunk, pages, page_start, page_end);
330 	pcpu_free_pages(chunk, pages, page_start, page_end);