diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/bits/mman-linux.h')
| -rw-r--r-- | sysdeps/unix/sysv/linux/bits/mman-linux.h | 21 |
1 files changed, 20 insertions, 1 deletions
diff --git a/sysdeps/unix/sysv/linux/bits/mman-linux.h b/sysdeps/unix/sysv/linux/bits/mman-linux.h index 5c3d43b0f2..522333c50a 100644 --- a/sysdeps/unix/sysv/linux/bits/mman-linux.h +++ b/sysdeps/unix/sysv/linux/bits/mman-linux.h @@ -54,10 +54,29 @@ # define MAP_ANONYMOUS 0x20 /* Don't use a file. */ #endif #define MAP_ANON MAP_ANONYMOUS -/* When MAP_HUGETLB is set bits [26:31] encode the log2 of the huge page size. */ + +/* When MAP_HUGETLB is set, bits [26:31] encode the log2 of the huge page size. + The following definitions are associated with this huge page size encoding. + It is responsibility of the application to know which sizes are supported on + the running system. See mmap(2) man page for details. */ + #define MAP_HUGE_SHIFT 26 #define MAP_HUGE_MASK 0x3f +#define MAP_HUGE_16KB (14 << MAP_HUGE_SHIFT) +#define MAP_HUGE_64KB (16 << MAP_HUGE_SHIFT) +#define MAP_HUGE_512KB (19 << MAP_HUGE_SHIFT) +#define MAP_HUGE_1MB (20 << MAP_HUGE_SHIFT) +#define MAP_HUGE_2MB (21 << MAP_HUGE_SHIFT) +#define MAP_HUGE_8MB (23 << MAP_HUGE_SHIFT) +#define MAP_HUGE_16MB (24 << MAP_HUGE_SHIFT) +#define MAP_HUGE_32MB (25 << MAP_HUGE_SHIFT) +#define MAP_HUGE_256MB (28 << MAP_HUGE_SHIFT) +#define MAP_HUGE_512MB (29 << MAP_HUGE_SHIFT) +#define MAP_HUGE_1GB (30 << MAP_HUGE_SHIFT) +#define MAP_HUGE_2GB (31 << MAP_HUGE_SHIFT) +#define MAP_HUGE_16GB (34U << MAP_HUGE_SHIFT) + /* Flags to `msync'. */ #define MS_ASYNC 1 /* Sync memory asynchronously. */ #define MS_SYNC 4 /* Synchronous memory sync. */ |