diff options
Diffstat (limited to 'tools/testing/selftests/mm/vm_util.h')
| -rw-r--r-- | tools/testing/selftests/mm/vm_util.h | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/tools/testing/selftests/mm/vm_util.h b/tools/testing/selftests/mm/vm_util.h index 1995ee911ef2..6edeb531afc6 100644 --- a/tools/testing/selftests/mm/vm_util.h +++ b/tools/testing/selftests/mm/vm_util.h @@ -1,6 +1,27 @@ /* SPDX-License-Identifier: GPL-2.0 */ #include <stdint.h> #include <stdbool.h> +#include <sys/mman.h> +#include <err.h> +#include <string.h> /* ffsl() */ +#include <unistd.h> /* _SC_PAGESIZE */ + +extern unsigned int __page_size; +extern unsigned int __page_shift; + +static inline unsigned int psize(void) +{ + if (!__page_size) + __page_size = sysconf(_SC_PAGESIZE); + return __page_size; +} + +static inline unsigned int pshift(void) +{ + if (!__page_shift) + __page_shift = (ffsl(psize()) - 1); + return __page_shift; +} uint64_t pagemap_get_entry(int fd, char *start); bool pagemap_is_softdirty(int fd, char *start); @@ -13,3 +34,13 @@ uint64_t read_pmd_pagesize(void); bool check_huge_anon(void *addr, int nr_hpages, uint64_t hpage_size); bool check_huge_file(void *addr, int nr_hpages, uint64_t hpage_size); bool check_huge_shmem(void *addr, int nr_hpages, uint64_t hpage_size); +int64_t allocate_transhuge(void *ptr, int pagemap_fd); + +/* + * On ppc64 this will only work with radix 2M hugepage size + */ +#define HPAGE_SHIFT 21 +#define HPAGE_SIZE (1 << HPAGE_SHIFT) + +#define PAGEMAP_PRESENT(ent) (((ent) & (1ull << 63)) != 0) +#define PAGEMAP_PFN(ent) ((ent) & ((1ull << 55) - 1)) |