2008-11-01  Ulrich Drepper  <drepper@redhat.com>

	[BZ #6955]
	* pthread_mutex_lock.c: Add support for private PI mutexes.
	* pthread_mutex_timedlock.c: Likewise.
	* pthread_mutex_trylock.c: Likewise.
	* pthread_mutex_unlock.c: Likewise.
	Patch mostly by Ben Jackson <ben@ben.com>.

--- libc/nptl/pthread_mutex_lock.c	11 Aug 2007 18:46:53 -0000	1.20
+++ libc/nptl/pthread_mutex_lock.c	1 Nov 2008 19:49:08 -0000	1.21
@@ -269,9 +269,13 @@ __pthread_mutex_lock (mutex)
 	  {
 	    /* The mutex is locked.  The kernel will now take care of
 	       everything.  */
+	    int private = (robust
+			   ? PTHREAD_ROBUST_MUTEX_PSHARED (mutex)
+			   : PTHREAD_MUTEX_PSHARED (mutex));
 	    INTERNAL_SYSCALL_DECL (__err);
 	    int e = INTERNAL_SYSCALL (futex, __err, 4, &mutex->__data.__lock,
-				      FUTEX_LOCK_PI, 1, 0);
+				      __lll_private_flag (FUTEX_LOCK_PI,
+							  private), 1, 0);
 
 	    if (INTERNAL_SYSCALL_ERROR_P (e, __err)
 		&& (INTERNAL_SYSCALL_ERRNO (e, __err) == ESRCH
@@ -327,7 +331,10 @@ __pthread_mutex_lock (mutex)
 
 	    INTERNAL_SYSCALL_DECL (__err);
 	    INTERNAL_SYSCALL (futex, __err, 4, &mutex->__data.__lock,
-			      FUTEX_UNLOCK_PI, 0, 0);
+			      __lll_private_flag (FUTEX_UNLOCK_PI,
+						  PTHREAD_ROBUST_MUTEX_PSHARED (mutex)
+),
+			      0, 0);
 
 	    THREAD_SETMEM (THREAD_SELF, robust_head.list_op_pending, NULL);
 	    return ENOTRECOVERABLE;
--- libc/nptl/pthread_mutex_timedlock.c	11 Aug 2007 18:42:56 -0000	1.16
+++ libc/nptl/pthread_mutex_timedlock.c	1 Nov 2008 19:47:04 -0000	1.17
@@ -254,10 +254,15 @@ pthread_mutex_timedlock (mutex, abstime)
 	    /* The mutex is locked.  The kernel will now take care of
 	       everything.  The timeout value must be a relative value.
 	       Convert it.  */
+	    int private = (robust
+			   ? PTHREAD_ROBUST_MUTEX_PSHARED (mutex)
+			   : PTHREAD_MUTEX_PSHARED (mutex));
 	    INTERNAL_SYSCALL_DECL (__err);
 
 	    int e = INTERNAL_SYSCALL (futex, __err, 4, &mutex->__data.__lock,
-				      FUTEX_LOCK_PI, 1, abstime);
+				      __lll_private_flag (FUTEX_LOCK_PI,
+							  private), 1,
+				      abstime);
 	    if (INTERNAL_SYSCALL_ERROR_P (e, __err))
 	      {
 		if (INTERNAL_SYSCALL_ERRNO (e, __err) == ETIMEDOUT)
@@ -331,7 +336,9 @@ pthread_mutex_timedlock (mutex, abstime)
 
 	    INTERNAL_SYSCALL_DECL (__err);
 	    INTERNAL_SYSCALL (futex, __err, 4, &mutex->__data.__lock,
-			      FUTEX_UNLOCK_PI, 0, 0);
+			      __lll_private_flag (FUTEX_UNLOCK_PI,
+						  PTHREAD_ROBUST_MUTEX_PSHARED (mutex)),
+			      0, 0);
 
 	    THREAD_SETMEM (THREAD_SELF, robust_head.list_op_pending, NULL);
 	    return ENOTRECOVERABLE;
--- libc/nptl/pthread_mutex_trylock.c	11 Aug 2007 18:47:09 -0000	1.17
+++ libc/nptl/pthread_mutex_trylock.c	1 Nov 2008 19:44:53 -0000	1.18
@@ -231,9 +231,13 @@ __pthread_mutex_trylock (mutex)
 
 	    /* The mutex owner died.  The kernel will now take care of
 	       everything.  */
+	    int private = (robust
+			   ? PTHREAD_ROBUST_MUTEX_PSHARED (mutex)
+			   : PTHREAD_MUTEX_PSHARED (mutex));
 	    INTERNAL_SYSCALL_DECL (__err);
 	    int e = INTERNAL_SYSCALL (futex, __err, 4, &mutex->__data.__lock,
-				      FUTEX_TRYLOCK_PI, 0, 0);
+				      __lll_private_flag (FUTEX_TRYLOCK_PI,
+							  private), 0, 0);
 
 	    if (INTERNAL_SYSCALL_ERROR_P (e, __err)
 		&& INTERNAL_SYSCALL_ERRNO (e, __err) == EWOULDBLOCK)
@@ -274,7 +278,9 @@ __pthread_mutex_trylock (mutex)
 
 	    INTERNAL_SYSCALL_DECL (__err);
 	    INTERNAL_SYSCALL (futex, __err, 4, &mutex->__data.__lock,
-			      FUTEX_UNLOCK_PI, 0, 0);
+			      __lll_private_flag (FUTEX_UNLOCK_PI,
+						  PTHREAD_ROBUST_MUTEX_PSHARED (mutex)),
+			      0, 0);
 
 	    THREAD_SETMEM (THREAD_SELF, robust_head.list_op_pending, NULL);
 	    return ENOTRECOVERABLE;
--- libc/nptl/pthread_mutex_unlock.c	11 Aug 2007 18:43:23 -0000	1.18
+++ libc/nptl/pthread_mutex_unlock.c	1 Nov 2008 19:42:36 -0000	1.19
@@ -196,9 +196,13 @@ __pthread_mutex_unlock_usercnt (mutex, d
 						   THREAD_GETMEM (THREAD_SELF,
 								  tid)))
 	{
+	  int robust = mutex->__data.__kind & PTHREAD_MUTEX_ROBUST_NORMAL_NP;
+	  int private = (robust
+			 ? PTHREAD_ROBUST_MUTEX_PSHARED (mutex)
+			 : PTHREAD_MUTEX_PSHARED (mutex));
 	  INTERNAL_SYSCALL_DECL (__err);
 	  INTERNAL_SYSCALL (futex, __err, 2, &mutex->__data.__lock,
-			    FUTEX_UNLOCK_PI);
+			    __lll_private_flag (FUTEX_UNLOCK_PI, private));
 	}
 
       THREAD_SETMEM (THREAD_SELF, robust_head.list_op_pending, NULL);