selftests/mm/pagemap_ioctl.c

187 	int mem_size, vec_size, written, num_pages = 16;
190 	mem_size = num_pages * page_size;
191 	mem = mmap(NULL, mem_size, PROT_NONE, MAP_PRIVATE | MAP_ANON, -1, 0);
195 	wp_init(mem, mem_size);
198 	mprotect(mem, mem_size/8, PROT_READ|PROT_WRITE);
199 	mprotect(mem + 1 * mem_size/8, mem_size/8, PROT_READ);
200 	mprotect(mem + 2 * mem_size/8, mem_size/8, PROT_READ|PROT_WRITE);
201 	mprotect(mem + 3 * mem_size/8, mem_size/8, PROT_READ);
202 	mprotect(mem + 4 * mem_size/8, mem_size/8, PROT_READ|PROT_WRITE);
203 	mprotect(mem + 5 * mem_size/8, mem_size/8, PROT_NONE);
204 	mprotect(mem + 6 * mem_size/8, mem_size/8, PROT_READ|PROT_WRITE);
205 	mprotect(mem + 7 * mem_size/8, mem_size/8, PROT_READ);
207 	wp_addr_range(mem + (mem_size/16), mem_size - 2 * (mem_size/8));
208 	wp_addr_range(mem, mem_size);
210 	vec_size = mem_size/page_size;
213 	written = pagemap_ioctl(mem, mem_size, vec, 1, PM_SCAN_WP_MATCHING | PM_SCAN_CHECK_WPASYNC,
220 	wp_free(mem, mem_size);
221 	munmap(mem, mem_size);
238 	int mem_size, vec_size, ret, ret2, ret3, i, num_pages = 1000, total_pages = 0;
245 	mem_size = num_pages * page_size;
255 	mem = mmap(NULL, mem_size, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANON, -1, 0);
259 	wp_init(mem, mem_size);
260 	wp_addr_range(mem, mem_size);
267 	ksft_test_result(pagemap_ioctl(mem, mem_size, NULL, vec_size, 0,
271 	ksft_test_result(pagemap_ioctl(mem, mem_size, vec, 0, 0,
275 	ksft_test_result(pagemap_ioctl(mem, mem_size, 0, 0, 0,
279 	ksft_test_result(pagemap_ioctl(mem, mem_size, vec, vec_size, -1,
283 	ksft_test_result(pagemap_ioctl(mem, mem_size, vec, vec_size,
288 	ksft_test_result(pagemap_ioctl(mem, mem_size, vec, vec_size, 0,
292 	ksft_test_result(pagemap_ioctl(mem, mem_size, vec, vec_size, 0,
296 	ksft_test_result(pagemap_ioctl(mem, mem_size, vec, vec_size, 0,
300 	ksft_test_result(pagemap_ioctl(mem, mem_size, vec, vec_size,
305 	ksft_test_result(pagemap_ioctl(mem, mem_size, vec, vec_size,
312 	ret = pagemap_ioctl(mem, mem_size, vec, vec_size,
318 	for (i = 0; i < mem_size; i += 2 * page_size)
321 	ret = pagemap_ioctl(mem, mem_size, vec, vec_size, 0, 0, PAGE_IS_WRITTEN, 0,
326 	ksft_test_result(ret == mem_size/(page_size * 2),
330 	ret = pagemap_ioctl(mem, mem_size, vec, vec_size,
336 	ret2 = pagemap_ioctl(mem, mem_size, vec, 2, 0, 0, PAGE_IS_WRITTEN, 0, 0,
341 	ret3 = pagemap_ioctl(mem, mem_size, vec, vec_size,
352 	for (i = 0; i < mem_size; i += 2 * page_size)
354 	mem[(mem_size/page_size - 1) * page_size]++;
356 	ret = pagemap_ioctl(mem, mem_size, vec, vec_size,
362 	ret2 = pagemap_ioctl(mem, mem_size, vec, vec_size,
373 	vec_size = mem_size/page_size;
374 	memset(mem, -1, mem_size);
383 	ret2 = pagemap_ioctl(mem, mem_size, vec2, vec_size, 0, 0,
395 	wp_free(mem, mem_size);
396 	munmap(mem, mem_size);
399 	m[0] = mmap(NULL, mem_size, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANON, -1, 0);
402 	m[1] = mmap(NULL, mem_size, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANON, -1, 0);
406 	wp_init(m[0], mem_size);
407 	wp_init(m[1], mem_size);
408 	wp_addr_range(m[0], mem_size);
409 	wp_addr_range(m[1], mem_size);
411 	memset(m[0], 'a', mem_size);
412 	memset(m[1], 'b', mem_size);
414 	wp_addr_range(m[0], mem_size);
416 	ret = pagemap_ioctl(m[1], mem_size, vec, 1, 0, 0, PAGE_IS_WRITTEN, 0, 0,
421 	ksft_test_result(ret == 1 && LEN(vec[0]) == mem_size/page_size,
424 	wp_free(m[0], mem_size);
425 	wp_free(m[1], mem_size);
426 	munmap(m[0], mem_size);
427 	munmap(m[1], mem_size);
433 	mem_size = 1050 * page_size;
434 	vec_size = mem_size/(page_size*2);
440 	mem = mmap(NULL, mem_size, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANON, -1, 0);
444 	wp_init(mem, mem_size);
445 	wp_addr_range(mem, mem_size);
447 	ret = pagemap_ioctl(mem, mem_size, vec, vec_size,
453 	for (i = 0; i < mem_size/page_size; i += 2)
456 	ret = pagemap_ioctl(mem, mem_size, vec, vec_size,
458 			    mem_size/(page_size*5), PAGE_IS_WRITTEN, 0, 0, PAGE_IS_WRITTEN);
464 	ret = pagemap_ioctl(mem, mem_size, vec, vec_size,
466 			    mem_size/(page_size*5), PAGE_IS_WRITTEN, 0, 0, PAGE_IS_WRITTEN);
472 	ret = pagemap_ioctl(mem, mem_size, vec, vec_size,
474 			    mem_size/(page_size*5), PAGE_IS_WRITTEN, 0, 0, PAGE_IS_WRITTEN);
480 	ksft_test_result(total_pages == mem_size/(page_size*2), "%s Smaller max_pages\n", __func__);
483 	wp_free(mem, mem_size);
484 	munmap(mem, mem_size);
488 	mem_size = 10000 * page_size;
495 	mem = mmap(NULL, mem_size, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANON, -1, 0);
499 	wp_init(mem, mem_size);
500 	wp_addr_range(mem, mem_size);
506 		for (i = 0; i < mem_size; i += page_size) {
514 			ret = pagemap_ioc((void *)walk_end, mem_size-(walk_end - (long)mem), vec,
534 	wp_free(mem, mem_size);
535 	munmap(mem, mem_size);
539 	mem_size = vec_size * page_size;
545 	mem = mmap(NULL, mem_size, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANON, -1, 0);
549 	wp_init(mem, mem_size);
550 	wp_addr_range(mem, mem_size);
552 	memset(mem, 0, mem_size);
575 	ret = pagemap_ioc(mem, mem_size, vec, vec_size, 0,
579 	ksft_test_result(ret == 1 && walk_end == (long)(mem + mem_size),
582 	ret = pagemap_ioc(mem, mem_size, vec, 1, 0,
586 	ksft_test_result(ret == 1 && walk_end == (long)(mem + mem_size),
589 	ret = pagemap_ioc(mem, mem_size, vec, 1, 0,
593 	ksft_test_result(ret == 1 && walk_end == (long)(mem + mem_size),
596 	ret = pagemap_ioc(mem, mem_size, vec, vec_size, 0,
600 	ksft_test_result(ret == 1 && walk_end == (long)(mem + mem_size/2),
603 	ret = pagemap_ioc(mem, mem_size, vec, vec_size, 0,
610 	ret = pagemap_ioc(mem, mem_size, vec, vec_size, 0,
614 	ksft_test_result(ret == 1 && walk_end == (long)(mem + mem_size),
617 	wp_addr_range(mem, mem_size);
618 	for (i = 0; i < mem_size; i += 2 * page_size)
621 	ret = pagemap_ioc(mem, mem_size, vec, vec_size, 0,
625 	ksft_test_result(ret == vec_size/2 && walk_end == (long)(mem + mem_size),
628 	ret = pagemap_ioc(mem, mem_size, vec, 1, 0,
635 	ret = pagemap_ioc(mem, mem_size, vec, 1, 0,
642 	ret = pagemap_ioc(mem, mem_size, vec, vec_size/2, 0,
646 	ksft_test_result(ret == vec_size/2 && walk_end == (long)(mem + mem_size),
649 	ret = pagemap_ioc(mem, mem_size, vec, vec_size, 0,
653 	ksft_test_result(ret == vec_size/2 && walk_end == (long)(mem + mem_size),
656 	ret = pagemap_ioc(mem, mem_size, vec, vec_size, 0,
660 	ksft_test_result(ret == vec_size/2 && walk_end == (long)(mem + mem_size),
663 	ret = pagemap_ioc(mem, mem_size, vec, vec_size, 0,
671 	wp_free(mem, mem_size);
672 	munmap(mem, mem_size);
677 int base_tests(char *prefix, char *mem, int mem_size, int skip)
693 	vec_size = mem_size/page_size;
698 	written = pagemap_ioctl(mem, mem_size, vec, 1, PM_SCAN_WP_MATCHING | PM_SCAN_CHECK_WPASYNC,
706 	memset(mem, -1, mem_size);
708 	written = pagemap_ioctl(mem, mem_size, vec, 1, 0, 0, PAGE_IS_WRITTEN, 0, 0,
713 	ksft_test_result(written == 1 && LEN(vec[0]) == mem_size/page_size,
717 	written = pagemap_ioctl(mem, mem_size, vec, 1, PM_SCAN_WP_MATCHING | PM_SCAN_CHECK_WPASYNC,
722 	memset(mem + page_size, 0, mem_size - (2 * page_size));
724 	written = pagemap_ioctl(mem, mem_size, vec, 1, PM_SCAN_WP_MATCHING | PM_SCAN_CHECK_WPASYNC,
732 	written = pagemap_ioctl(mem, mem_size, vec, 1, 0, 0,
741 	written = pagemap_ioctl(mem, mem_size, vec, 1, PM_SCAN_WP_MATCHING | PM_SCAN_CHECK_WPASYNC,
748 	written = pagemap_ioctl(mem, mem_size, vec, vec_size, 0, 0, PAGE_IS_WRITTEN,
757 	written = pagemap_ioctl(mem, mem_size, vec, 1, PM_SCAN_WP_MATCHING | PM_SCAN_CHECK_WPASYNC,
1050 	int mem_size, vec_size, ret, fd, i, buf_size;
1057 	mem_size = 10 * page_size;
1058 	vec_size = mem_size / page_size;
1061 	mem = mmap(NULL, mem_size, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANON, -1, 0);
1065 	wp_init(mem, mem_size);
1066 	wp_addr_range(mem, mem_size);
1068 	ksft_test_result(pagemap_ioctl(mem, mem_size, vec, vec_size,
1072 	ksft_test_result(pagemap_ioctl(mem, mem_size, vec, vec_size, 0, 0,
1075 	ksft_test_result(pagemap_ioctl(mem, mem_size, vec, vec_size, 0, 0,
1078 	ksft_test_result(pagemap_ioctl(mem, mem_size, vec, vec_size, 0, 0,
1081 	ksft_test_result(pagemap_ioctl(mem, mem_size, vec, vec_size, 0, 0,
1085 	wp_free(mem, mem_size);
1086 	munmap(mem, mem_size);
1089 	mem = mmap(NULL, mem_size, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANON, -1, 0);
1092 	wp_init(mem, mem_size);
1093 	wp_addr_range(mem, mem_size);
1095 	memset(mem, 0, mem_size);
1097 	ret = pagemap_ioctl(mem, mem_size, vec, vec_size, 0, 0,
1105 	ret = pagemap_ioctl(mem, mem_size, vec, vec_size, 0, 0,
1113 	ret = pagemap_ioctl(mem, mem_size, vec, vec_size, 0, 0,
1122 	ret = pagemap_ioctl(mem, mem_size, vec, vec_size, 0, 0,
1127 	ret = pagemap_ioctl(mem, mem_size, vec, vec_size, 0, 0,
1131 	wp_free(mem, mem_size);
1132 	munmap(mem, mem_size);
1135 	mem = mmap(NULL, mem_size, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANON, -1, 0);
1138 	wp_init(mem, mem_size);
1139 	wp_addr_range(mem, mem_size);
1141 	memset(mem, 0, mem_size);
1143 	ret = pagemap_ioctl(mem, mem_size, vec, vec_size,
1149 	wp_free(mem, mem_size);
1150 	munmap(mem, mem_size);
1478 	int mem_size, shmid, buf_size, fd, i, ret;
1502 	mem_size = 10 * page_size;
1503 	mem = mmap(NULL, mem_size, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANON, -1, 0);
1506 	wp_init(mem, mem_size);
1507 	wp_addr_range(mem, mem_size);
1509 	base_tests("Page testing:", mem, mem_size, 0);
1511 	wp_free(mem, mem_size);
1512 	munmap(mem, mem_size);
1515 	mem_size = 512 * 10 * page_size;
1516 	mem = mmap(NULL, mem_size, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANON, -1, 0);
1519 	wp_init(mem, mem_size);
1520 	wp_addr_range(mem, mem_size);
1522 	base_tests("Large Page testing:", mem, mem_size, 0);
1524 	wp_free(mem, mem_size);
1525 	munmap(mem, mem_size);
1540 	mem_size = 2*1024*1024;
1541 	mem = gethugetlb_mem(mem_size, &shmid);
1543 		wp_init(mem, mem_size);
1544 		wp_addr_range(mem, mem_size);
1546 		base_tests("Hugetlb shmem testing:", mem, mem_size, 0);
1548 		wp_free(mem, mem_size);
1555 	mem = gethugetlb_mem(mem_size, NULL);
1557 		wp_init(mem, mem_size);
1558 		wp_addr_range(mem, mem_size);
1560 		base_tests("Hugetlb mem testing:", mem, mem_size, 0);
1562 		wp_free(mem, mem_size);
1568 	mem_size = 2*1024*1024;
1570 	mem = mmap(NULL, mem_size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
1572 		wp_init(mem, mem_size);
1573 		wp_addr_range(mem, mem_size);
1575 		base_tests("Hugetlb shmem testing:", mem, mem_size, 0);
1577 		wp_free(mem, mem_size);