diff options
Diffstat (limited to 'include/uapi')
| -rw-r--r-- | include/uapi/asm-generic/unistd.h | 8 | ||||
| -rw-r--r-- | include/uapi/linux/futex.h | 31 |
2 files changed, 35 insertions, 4 deletions
diff --git a/include/uapi/asm-generic/unistd.h b/include/uapi/asm-generic/unistd.h index abe087c53b4b..d9e9cd13e577 100644 --- a/include/uapi/asm-generic/unistd.h +++ b/include/uapi/asm-generic/unistd.h @@ -822,9 +822,15 @@ __SYSCALL(__NR_cachestat, sys_cachestat) #define __NR_fchmodat2 452 __SYSCALL(__NR_fchmodat2, sys_fchmodat2) +#define __NR_futex_wake 454 +__SYSCALL(__NR_futex_wake, sys_futex_wake) +#define __NR_futex_wait 455 +__SYSCALL(__NR_futex_wait, sys_futex_wait) +#define __NR_futex_requeue 456 +__SYSCALL(__NR_futex_requeue, sys_futex_requeue) #undef __NR_syscalls -#define __NR_syscalls 453 +#define __NR_syscalls 457 /* * 32 bit systems traditionally used different diff --git a/include/uapi/linux/futex.h b/include/uapi/linux/futex.h index 71a5df8d2689..d2ee625ea189 100644 --- a/include/uapi/linux/futex.h +++ b/include/uapi/linux/futex.h @@ -44,10 +44,35 @@ FUTEX_PRIVATE_FLAG) /* - * Flags to specify the bit length of the futex word for futex2 syscalls. - * Currently, only 32 is supported. + * Flags for futex2 syscalls. + * + * NOTE: these are not pure flags, they can also be seen as: + * + * union { + * u32 flags; + * struct { + * u32 size : 2, + * numa : 1, + * : 4, + * private : 1; + * }; + * }; */ -#define FUTEX_32 2 +#define FUTEX2_SIZE_U8 0x00 +#define FUTEX2_SIZE_U16 0x01 +#define FUTEX2_SIZE_U32 0x02 +#define FUTEX2_SIZE_U64 0x03 +#define FUTEX2_NUMA 0x04 + /* 0x08 */ + /* 0x10 */ + /* 0x20 */ + /* 0x40 */ +#define FUTEX2_PRIVATE FUTEX_PRIVATE_FLAG + +#define FUTEX2_SIZE_MASK 0x03 + +/* do not use */ +#define FUTEX_32 FUTEX2_SIZE_U32 /* historical accident :-( */ /* * Max numbers of elements in a futex_waitv array |