projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 642bc52a MUA |
1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 2 | #include <stdint.h> | |
| 3 | #include <stdbool.h> | |
| af605d26 PX |
4 | #include <sys/mman.h> |
| 5 | #include <err.h> | |
| 176517c9 | 6 | #include <strings.h> /* ffsl() */ |
| af605d26 PX |
7 | #include <unistd.h> /* _SC_PAGESIZE */ |
| 8 | ||
| 9f74696b PX |
9 | #define BIT_ULL(nr) (1ULL << (nr)) |
| 10 | #define PM_SOFT_DIRTY BIT_ULL(55) | |
| 11 | #define PM_MMAP_EXCLUSIVE BIT_ULL(56) | |
| 12 | #define PM_UFFD_WP BIT_ULL(57) | |
| 13 | #define PM_FILE BIT_ULL(61) | |
| 14 | #define PM_SWAP BIT_ULL(62) | |
| 15 | #define PM_PRESENT BIT_ULL(63) | |
| 16 | ||
| af605d26 PX |
17 | extern unsigned int __page_size; |
| 18 | extern unsigned int __page_shift; | |
| 19 | ||
| 20 | static inline unsigned int psize(void) | |
| 21 | { | |
| 22 | if (!__page_size) | |
| 23 | __page_size = sysconf(_SC_PAGESIZE); | |
| 24 | return __page_size; | |
| 25 | } | |
| 26 | ||
| 27 | static inline unsigned int pshift(void) | |
| 28 | { | |
| 29 | if (!__page_shift) | |
| 30 | __page_shift = (ffsl(psize()) - 1); | |
| 31 | return __page_shift; | |
| 32 | } | |
| 642bc52a MUA |
33 | |
| 34 | uint64_t pagemap_get_entry(int fd, char *start); | |
| 35 | bool pagemap_is_softdirty(int fd, char *start); | |
| 69c66add | 36 | bool pagemap_is_swapped(int fd, char *start); |
| a905e82a | 37 | bool pagemap_is_populated(int fd, char *start); |
| 93fb70aa | 38 | unsigned long pagemap_get_pfn(int fd, char *start); |
| 642bc52a | 39 | void clear_softdirty(void); |
| c07c343c | 40 | bool check_for_pattern(FILE *fp, const char *pattern, char *buf, size_t len); |
| 642bc52a | 41 | uint64_t read_pmd_pagesize(void); |
| c07c343c | 42 | bool check_huge_anon(void *addr, int nr_hpages, uint64_t hpage_size); |
| 1b03d0d5 ZK |
43 | bool check_huge_file(void *addr, int nr_hpages, uint64_t hpage_size); |
| 44 | bool check_huge_shmem(void *addr, int nr_hpages, uint64_t hpage_size); | |
| af605d26 | 45 | int64_t allocate_transhuge(void *ptr, int pagemap_fd); |
| bd4d67e7 | 46 | unsigned long default_huge_page_size(void); |
| 81b1e3f9 | 47 | int detect_hugetlb_page_sizes(size_t sizes[], int max); |
| af605d26 | 48 | |
| c4277cb6 PX |
49 | int uffd_register(int uffd, void *addr, uint64_t len, |
| 50 | bool miss, bool wp, bool minor); | |
| 51 | int uffd_unregister(int uffd, void *addr, uint64_t len); | |
| c3315502 PX |
52 | int uffd_register_with_ioctls(int uffd, void *addr, uint64_t len, |
| 53 | bool miss, bool wp, bool minor, uint64_t *ioctls); | |
| c8b90731 | 54 | unsigned long get_free_hugepages(void); |
| c4277cb6 | 55 | |
| af605d26 PX |
56 | /* |
| 57 | * On ppc64 this will only work with radix 2M hugepage size | |
| 58 | */ | |
| 59 | #define HPAGE_SHIFT 21 | |
| 60 | #define HPAGE_SIZE (1 << HPAGE_SHIFT) | |
| 61 | ||
| 62 | #define PAGEMAP_PRESENT(ent) (((ent) & (1ull << 63)) != 0) | |
| 63 | #define PAGEMAP_PFN(ent) ((ent) & ((1ull << 55) - 1)) |