selftests/mm/madv_populate.c

32 	char *addr;
35 	addr = mmap(0, pagesize, PROT_READ | PROT_WRITE,
37 	if (!addr)
40 	ret = madvise(addr, pagesize, MADV_POPULATE_READ);
44 	ret = madvise(addr, pagesize, MADV_POPULATE_WRITE);
48 	munmap(addr, pagesize);
53 	char *addr;
58 	addr = mmap(0, SIZE, PROT_READ, MAP_ANONYMOUS | MAP_PRIVATE, 0, 0);
59 	if (addr == MAP_FAILED)
62 	ret = madvise(addr, SIZE, MADV_POPULATE_READ);
65 	ret = madvise(addr, SIZE, MADV_POPULATE_WRITE);
69 	munmap(addr, SIZE);
74 	char *addr;
79 	addr = mmap(0, SIZE, PROT_WRITE, MAP_ANONYMOUS | MAP_PRIVATE, 0, 0);
80 	if (addr == MAP_FAILED)
83 	ret = madvise(addr, SIZE, MADV_POPULATE_READ);
87 	ret = madvise(addr, SIZE, MADV_POPULATE_WRITE);
90 	munmap(addr, SIZE);
95 	char *addr;
100 	addr = mmap(0, SIZE, PROT_READ | PROT_WRITE,
102 	if (addr == MAP_FAILED)
104 	ret = munmap(addr + pagesize, pagesize);
109 	ret = madvise(addr, SIZE, MADV_POPULATE_READ);
112 	ret = madvise(addr, SIZE, MADV_POPULATE_WRITE);
117 	ret = madvise(addr, 2 * pagesize, MADV_POPULATE_READ);
120 	ret = madvise(addr, 2 * pagesize, MADV_POPULATE_WRITE);
125 	ret = madvise(addr + pagesize, pagesize, MADV_POPULATE_READ);
128 	ret = madvise(addr + pagesize, pagesize, MADV_POPULATE_WRITE);
132 	munmap(addr, SIZE);
165 	char *addr;
170 	addr = mmap(0, SIZE, PROT_READ | PROT_WRITE,
172 	if (addr == MAP_FAILED)
174 	ksft_test_result(range_is_not_populated(addr, SIZE),
177 	ret = madvise(addr, SIZE, MADV_POPULATE_READ);
179 	ksft_test_result(range_is_populated(addr, SIZE),
182 	munmap(addr, SIZE);
187 	char *addr;
192 	addr = mmap(0, SIZE, PROT_READ | PROT_WRITE,
194 	if (addr == MAP_FAILED)
196 	ksft_test_result(range_is_not_populated(addr, SIZE),
199 	ret = madvise(addr, SIZE, MADV_POPULATE_WRITE);
201 	ksft_test_result(range_is_populated(addr, SIZE),
204 	munmap(addr, SIZE);
237 	char *addr;
242 	addr = mmap(0, SIZE, PROT_READ | PROT_WRITE,
244 	if (addr == MAP_FAILED)
249 	ksft_test_result(range_is_not_softdirty(addr, SIZE),
253 	ret = madvise(addr, SIZE, MADV_POPULATE_READ);
255 	ksft_test_result(range_is_not_softdirty(addr, SIZE),
259 	ret = madvise(addr, SIZE, MADV_POPULATE_WRITE);
261 	ksft_test_result(range_is_softdirty(addr, SIZE),
264 	munmap(addr, SIZE);