diff options
Diffstat (limited to 'nptl/sysdeps/unix/sysv/linux/ia64/lowlevellock.h')
| -rw-r--r-- | nptl/sysdeps/unix/sysv/linux/ia64/lowlevellock.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/nptl/sysdeps/unix/sysv/linux/ia64/lowlevellock.h b/nptl/sysdeps/unix/sysv/linux/ia64/lowlevellock.h index e13358ffef..4219fe2716 100644 --- a/nptl/sysdeps/unix/sysv/linux/ia64/lowlevellock.h +++ b/nptl/sysdeps/unix/sysv/linux/ia64/lowlevellock.h @@ -31,6 +31,8 @@ #define FUTEX_WAKE 1 #define FUTEX_REQUEUE 3 #define FUTEX_CMP_REQUEUE 4 +#define FUTEX_WAKE_OP 5 +#define FUTEX_OP_CLEAR_WAKE_IF_GT_ONE ((4 << 24) | 1) /* Delay in spinlock loop. */ #define BUSY_WAIT_NOP asm ("hint @pause") @@ -62,6 +64,15 @@ _r10 == -1; \ }) +/* Returns non-zero if error happened, zero if success. */ +#define lll_futex_wake_unlock(ftx, nr_wake, nr_wake2, ftx2) \ +({ \ + DO_INLINE_SYSCALL(futex, 6, (long) (ftx), FUTEX_WAKE_OP, \ + (int) (nr_wake), (int) (nr_wake2), (long) (ftx2), \ + FUTEX_OP_CLEAR_WAKE_IF_GT_ONE); \ + _r10 == -1; \ +}) + #define __lll_mutex_trylock(futex) \ (atomic_compare_and_exchange_val_acq (futex, 1, 0) != 0) |