diff options
Diffstat (limited to 'kernel/futex')
| -rw-r--r-- | kernel/futex/syscalls.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/kernel/futex/syscalls.c b/kernel/futex/syscalls.c index 2339f9ccee7f..7049a52ef68e 100644 --- a/kernel/futex/syscalls.c +++ b/kernel/futex/syscalls.c @@ -306,6 +306,36 @@ destroy_timer: return ret; } +/* + * sys_futex_wake - Wake a number of futexes + * @uaddr: Address of the futex(es) to wake + * @mask: bitmask + * @nr: Number of the futexes to wake + * @flags: FUTEX2 flags + * + * Identical to the traditional FUTEX_WAKE_BITSET op, except it is part of the + * futex2 family of calls. + */ + +SYSCALL_DEFINE4(futex_wake, + void __user *, uaddr, + unsigned long, mask, + int, nr, + unsigned int, flags) +{ + if (flags & ~FUTEX2_VALID_MASK) + return -EINVAL; + + flags = futex2_to_flags(flags); + if (!futex_flags_valid(flags)) + return -EINVAL; + + if (!futex_validate_input(flags, mask)) + return -EINVAL; + + return futex_wake(uaddr, flags, nr, mask); +} + #ifdef CONFIG_COMPAT COMPAT_SYSCALL_DEFINE2(set_robust_list, struct compat_robust_list_head __user *, head, |