diff options
Diffstat (limited to 'nptl/sysdeps/unix/sysv/linux/s390/lowlevellock.h')
| -rw-r--r-- | nptl/sysdeps/unix/sysv/linux/s390/lowlevellock.h | 25 |
1 files changed, 24 insertions, 1 deletions
diff --git a/nptl/sysdeps/unix/sysv/linux/s390/lowlevellock.h b/nptl/sysdeps/unix/sysv/linux/s390/lowlevellock.h index 0846503e2f..62a06b5c5e 100644 --- a/nptl/sysdeps/unix/sysv/linux/s390/lowlevellock.h +++ b/nptl/sysdeps/unix/sysv/linux/s390/lowlevellock.h @@ -27,6 +27,7 @@ #define SYS_futex 238 #define FUTEX_WAIT 0 #define FUTEX_WAKE 1 +#define FUTEX_REQUEUE 3 /* Initializer for compatibility lock. */ #define LLL_MUTEX_LOCK_INITIALIZER (0) @@ -80,6 +81,24 @@ }) +#define lll_futex_requeue(futex, nr_wake, nr_move, mutex) \ + ({ \ + register unsigned long int __r2 asm ("2") = (unsigned long int) (futex); \ + register unsigned long int __r3 asm ("3") = FUTEX_REQUEUE; \ + register unsigned long int __r4 asm ("4") = (long int) (nr_wake); \ + register unsigned long int __r5 asm ("5") = (long int) (nr_move); \ + register unsigned long int __r6 asm ("6") = (unsigned long int) (mutex); \ + register unsigned long __result asm ("2"); \ + \ + __asm __volatile ("svc %b1" \ + : "=d" (__result) \ + : "i" (SYS_futex), "0" (__r2), "d" (__r3), \ + "d" (__r4), "d" (__r5), "d" (__r6) \ + : "cc", "memory" ); \ + __result; \ + }) + + #define lll_compare_and_swap(futex, oldval, newval, operation) \ do { \ __typeof (futex) __futex = (futex); \ @@ -157,7 +176,11 @@ __lll_mutex_unlock (int *futex) if (oldval > 1) lll_futex_wake (futex, 1); } -#define lll_mutex_unlock(futex) __lll_mutex_unlock(&(futex)) +#define lll_mutex_unlock(futex) \ + __lll_mutex_unlock(&(futex)) + +#define lll_mutex_unlock_force(futex) \ + lll_futex_wake (&(futex), 1) #define lll_mutex_islocked(futex) \ (futex != 0) |