1fb7df12dSIngo Molnar /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ 2f3539c12SWang Nan #ifndef _UAPI_LINUX_MMAN_H 3f3539c12SWang Nan #define _UAPI_LINUX_MMAN_H 4f3539c12SWang Nan 5549a3976SIngo Molnar #include <asm/mman.h> 6549a3976SIngo Molnar #include <asm-generic/hugetlb_encode.h> 79350a917SArnaldo Carvalho de Melo #include <linux/types.h> 8f3539c12SWang Nan 9f3539c12SWang Nan #define MREMAP_MAYMOVE 1 10f3539c12SWang Nan #define MREMAP_FIXED 2 11f60b3878SArnaldo Carvalho de Melo #define MREMAP_DONTUNMAP 4 12f3539c12SWang Nan 13f3539c12SWang Nan #define OVERCOMMIT_GUESS 0 14f3539c12SWang Nan #define OVERCOMMIT_ALWAYS 1 15f3539c12SWang Nan #define OVERCOMMIT_NEVER 2 16f3539c12SWang Nan 17be709d48SArnaldo Carvalho de Melo #define MAP_SHARED 0x01 /* Share changes */ 18be709d48SArnaldo Carvalho de Melo #define MAP_PRIVATE 0x02 /* Changes are private */ 19be709d48SArnaldo Carvalho de Melo #define MAP_SHARED_VALIDATE 0x03 /* share + validate extension flags */ 20*9651fcedSJason A. Donenfeld #define MAP_DROPPABLE 0x08 /* Zero memory under memory pressure. */ 21be709d48SArnaldo Carvalho de Melo 22549a3976SIngo Molnar /* 23549a3976SIngo Molnar * Huge page size encoding when MAP_HUGETLB is specified, and a huge page 24549a3976SIngo Molnar * size other than the default is desired. See hugetlb_encode.h. 25549a3976SIngo Molnar * All known huge page size encodings are provided here. It is the 26549a3976SIngo Molnar * responsibility of the application to know which sizes are supported on 27549a3976SIngo Molnar * the running system. See mmap(2) man page for details. 28549a3976SIngo Molnar */ 29549a3976SIngo Molnar #define MAP_HUGE_SHIFT HUGETLB_FLAG_ENCODE_SHIFT 30549a3976SIngo Molnar #define MAP_HUGE_MASK HUGETLB_FLAG_ENCODE_MASK 31549a3976SIngo Molnar 3297a3863bSArnaldo Carvalho de Melo #define MAP_HUGE_16KB HUGETLB_FLAG_ENCODE_16KB 33549a3976SIngo Molnar #define MAP_HUGE_64KB HUGETLB_FLAG_ENCODE_64KB 34549a3976SIngo Molnar #define MAP_HUGE_512KB HUGETLB_FLAG_ENCODE_512KB 35549a3976SIngo Molnar #define MAP_HUGE_1MB HUGETLB_FLAG_ENCODE_1MB 36549a3976SIngo Molnar #define MAP_HUGE_2MB HUGETLB_FLAG_ENCODE_2MB 37549a3976SIngo Molnar #define MAP_HUGE_8MB HUGETLB_FLAG_ENCODE_8MB 38549a3976SIngo Molnar #define MAP_HUGE_16MB HUGETLB_FLAG_ENCODE_16MB 39685626dcSArnaldo Carvalho de Melo #define MAP_HUGE_32MB HUGETLB_FLAG_ENCODE_32MB 40549a3976SIngo Molnar #define MAP_HUGE_256MB HUGETLB_FLAG_ENCODE_256MB 41685626dcSArnaldo Carvalho de Melo #define MAP_HUGE_512MB HUGETLB_FLAG_ENCODE_512MB 42549a3976SIngo Molnar #define MAP_HUGE_1GB HUGETLB_FLAG_ENCODE_1GB 43549a3976SIngo Molnar #define MAP_HUGE_2GB HUGETLB_FLAG_ENCODE_2GB 44549a3976SIngo Molnar #define MAP_HUGE_16GB HUGETLB_FLAG_ENCODE_16GB 45549a3976SIngo Molnar 469350a917SArnaldo Carvalho de Melo struct cachestat_range { 479350a917SArnaldo Carvalho de Melo __u64 off; 489350a917SArnaldo Carvalho de Melo __u64 len; 499350a917SArnaldo Carvalho de Melo }; 509350a917SArnaldo Carvalho de Melo 519350a917SArnaldo Carvalho de Melo struct cachestat { 529350a917SArnaldo Carvalho de Melo __u64 nr_cache; 539350a917SArnaldo Carvalho de Melo __u64 nr_dirty; 549350a917SArnaldo Carvalho de Melo __u64 nr_writeback; 559350a917SArnaldo Carvalho de Melo __u64 nr_evicted; 569350a917SArnaldo Carvalho de Melo __u64 nr_recently_evicted; 579350a917SArnaldo Carvalho de Melo }; 589350a917SArnaldo Carvalho de Melo 59f3539c12SWang Nan #endif /* _UAPI_LINUX_MMAN_H */ 60