181  * The number of empty populated pages, protected by pcpu_lock.
187  * The number of populated pages in use by the allocator, protected by
196  * try to keep the number of populated free pages between
1057  * pcpu_is_populated - determines if the region is populated
1063  * For atomic allocations, check if the backing pages are populated.
1066  * Bool if the backing pages are populated.
1077 	start = find_next_zero_bit(chunk->populated, end, start);  in pcpu_is_populated()
1081 	end = find_next_bit(chunk->populated, end, start + 1);  in pcpu_is_populated()
1092  * @pop_only: use populated regions only
1363 	alloc_size = struct_size(chunk, populated,  in pcpu_alloc_first_chunk()
1404 	/* manage populated page bitmap */  in pcpu_alloc_first_chunk()
1406 	bitmap_fill(chunk->populated, chunk->nr_pages);  in pcpu_alloc_first_chunk()
1515  * @chunk: pcpu_chunk which got populated
1519  * Pages in [@page_start,@page_end) have been populated to @chunk.  Update
1530 	bitmap_set(chunk->populated, page_start, nr);  in pcpu_chunk_populated()
1554 	bitmap_clear(chunk->populated, page_start, nr);  in pcpu_chunk_depopulated()
1859 		for_each_clear_bitrange_from(rs, re, chunk->populated, page_end) {  in pcpu_alloc()
1977  * @empty_only: free chunks only if there are no populated pages
1980  * number of populated pages.  Otherwise, only reclaim chunks that have no
1981  * populated pages.
2016 		for_each_set_bitrange(rs, re, chunk->populated, chunk->nr_pages) {  in pcpu_balance_free()
2029  * pcpu_balance_populated - manage the amount of populated pages
2031  * Maintain a certain amount of populated pages to satisfy atomic allocations.
2050 	 * Ensure there are certain number of free populated pages for  in pcpu_balance_populated()
2086 		for_each_clear_bitrange(rs, re, chunk->populated, chunk->nr_pages) {  in pcpu_balance_populated()
2121  * Scan over chunks in the depopulate list and try to release unused populated
2125  * populated pages threshold, reintegrate the chunk if it has empty free pages.
2126  * Each chunk is scanned in the reverse order to keep populated pages close to
2147 	 * allocator not touching the populated bitmap.  in pcpu_reclaim_populated()
2155 		 * Scan chunk's pages in the reverse order to keep populated  in pcpu_reclaim_populated()
2173 			 * If the page is empty and populated, start or  in pcpu_reclaim_populated()
2180 			    test_bit(i, chunk->populated)) {  in pcpu_reclaim_populated()
2225  * pcpu_balance_workfn - manage the amount of free chunks and populated pages
2229  * populated pages.  An important thing to consider is when pages are freed and
2709 	pcpu_chunk_struct_size = struct_size(chunk, populated,  in pcpu_setup_first_chunk()
3324 		/* pte already populated, the following shouldn't fail */  in pcpu_page_first_chunk()
3436  * pcpu_nr_pages - calculate total number of populated backing pages
3438  * This reflects the number of pages populated to back chunks.  Metadata is
3444  * Total number of populated backing pages in use by the allocator.