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NPTL: Conditionalize direct futex syscall uses.

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This commit is contained in:
Roland McGrath
2014-10-17 14:30:16 -07:00
parent 327ae25707
commit 184ee94010
7 changed files with 62 additions and 22 deletions
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5
nptl/pthread_mutex_unlock.c
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@ -158,6 +158,10 @@ __pthread_mutex_unlock_full (pthread_mutex_t *mutex, int decr)
THREAD_SETMEM (THREAD_SELF, robust_head.list_op_pending, NULL);
break;
/* The PI support requires the Linux futex system call. If that's not
available, pthread_mutex_init should never have allowed the type to
be set. So it will get the default case for an invalid type. */
#ifdef __NR_futex
case PTHREAD_MUTEX_PI_RECURSIVE_NP:
/* Recursive mutex. */
if (mutex->__data.__owner != THREAD_GETMEM (THREAD_SELF, tid))
@ -245,6 +249,7 @@ __pthread_mutex_unlock_full (pthread_mutex_t *mutex, int decr)
THREAD_SETMEM (THREAD_SELF, robust_head.list_op_pending, NULL);
break;
#endif /* __NR_futex. */
case PTHREAD_MUTEX_PP_RECURSIVE_NP:
/* Recursive mutex. */