selftests/mm/mremap_test.c

239 	char *test_name = "mremap expand merge";
252 	remap = mremap(start, page_size, 2 * page_size, 0);
254 		ksft_print_msg("mremap failed: %s\n", strerror(errno));
279 	char *test_name = "mremap expand merge offset";
293 	remap = mremap(start + page_size, page_size, 2 * page_size, 0);
295 		ksft_print_msg("mremap failed: %s\n", strerror(errno));
312  * Verify that an mremap within a range does not cause corruption
321  * adjacent mremap.
327 	char *test_name = "mremap mremap move within range";
349 	void *new_ptr = mremap(src + SIZE_MB(1), SIZE_MB(1), SIZE_MB(1),
352 		perror("mremap");
363 			ksft_print_msg("Data at src at %d got corrupted due to unrelated mremap\n",
448 	dest_addr = mremap(src_addr, c.region_size, c.region_size,
453 		ksft_print_msg("mremap failed: %s\n", strerror(errno));
545  * mremap will unmap any previous mapping at the address range specified by
561  * Verify that an mremap aligning down does not destroy
568 	char *test_name = "mremap move 1mb from start at 1MB+256KB aligned src";
600 	void *new_ptr = mremap(src + SIZE_MB(1), SIZE_MB(1), SIZE_MB(1),
603 		perror("mremap");
614 			ksft_print_msg("Data at src at %d got corrupted due to unrelated mremap\n",
644 			ksft_test_result_xfail("%s\n\tExpected mremap failure\n",
652 		 * Comparing mremap time is only applicable if entire region
763 	/* Expected mremap failures */
766 				  "mremap - Source and Destination Regions Overlapping");
770 				  "mremap - Destination Address Misaligned (1KB-aligned)");
773 				  "mremap - Source Address Misaligned (1KB-aligned)");
778 				  "8KB mremap - Source PTE-aligned, Destination PTE-aligned");
782 				  "2MB mremap - Source 1MB-aligned, Destination PTE-aligned");
784 				  "2MB mremap - Source 1MB-aligned, Destination 1MB-aligned");
788 				  "4MB mremap - Source PMD-aligned, Destination PTE-aligned");
790 				  "4MB mremap - Source PMD-aligned, Destination 1MB-aligned");
792 				  "4MB mremap - Source PMD-aligned, Destination PMD-aligned");
796 				  "2GB mremap - Source PUD-aligned, Destination PTE-aligned");
798 				   "2GB mremap - Source PUD-aligned, Destination 1MB-aligned");
800 				   "2GB mremap - Source PUD-aligned, Destination PMD-aligned");
802 				   "2GB mremap - Source PUD-aligned, Destination PUD-aligned");
804 	/* Src and Dest addr 1MB aligned. 5MB mremap. */
806 				  "5MB mremap - Source 1MB-aligned, Destination 1MB-aligned");
808 	/* Src and Dest addr 1MB aligned. 5MB mremap. */
810 				  "5MB mremap - Source 1MB-aligned, Dest 1MB-aligned with 40MB Preamble");
814 					"1GB mremap - Source PTE-aligned, Destination PTE-aligned");
816 	 * mremap 1GB region - Page table level aligned time
820 				       "1GB mremap - Source PMD-aligned, Destination PMD-aligned");
822 				       "1GB mremap - Source PUD-aligned, Destination PUD-aligned");
851 		 "mremap HAVE_MOVE_PMD/PUD optimization time comparison for 1GB region:");