selftests/mm/split_huge_page_test.c

109 static void verify_rss_anon_split_huge_page_all_zeroes(char *one_page, int nr_hpages, size_t len)
114 	if (!check_huge_anon(one_page, 4, pmd_pagesize))
122 	write_debugfs(PID_FMT, getpid(), (uint64_t)one_page,
123 		      (uint64_t)one_page + len, 0);
126 		if (one_page[i] != (char)0)
129 	if (!check_huge_anon(one_page, 0, pmd_pagesize))
140 	char *one_page;
144 	one_page = allocate_zero_filled_hugepage(len);
145 	verify_rss_anon_split_huge_page_all_zeroes(one_page, nr_hpages, len);
147 	free(one_page);
152 	char *one_page;
156 	one_page = memalign(pmd_pagesize, len);
157 	if (!one_page)
160 	madvise(one_page, len, MADV_HUGEPAGE);
163 		one_page[i] = (char)i;
165 	if (!check_huge_anon(one_page, 4, pmd_pagesize))
169 	write_debugfs(PID_FMT, getpid(), (uint64_t)one_page,
170 		(uint64_t)one_page + len, order);
173 		if (one_page[i] != (char)i)
177 	if (!check_huge_anon(one_page, 0, pmd_pagesize))
181 	free(one_page);
186 	char *one_page, *pte_mapped, *pte_mapped2;
207 	one_page = mmap((void *)(1UL << 30), len, PROT_READ | PROT_WRITE,
209 	if (one_page == MAP_FAILED)
212 	madvise(one_page, len, MADV_HUGEPAGE);
215 		one_page[i] = (char)i;
217 	if (!check_huge_anon(one_page, 4, pmd_pagesize))
221 	pte_mapped = mremap(one_page, pagesize, pagesize, MREMAP_MAYMOVE);
225 		pte_mapped2 = mremap(one_page + pmd_pagesize * i + pagesize * i,
262 	munmap(one_page, len);