From: Richard Henderson <rth@twiddle.net>
Date: Thu, 21 Feb 2013 00:57:55 +0000 (-0800)
Subject: Add FUTEX_*_REQUEUE_PI support for Alpha.
X-Git-Tag: upstream/2.30~9482
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=97ccb9d55a5379eeea6988f26e7f3ad500af0991;p=external%2Fglibc.git

Add FUTEX_*_REQUEUE_PI support for Alpha.
---

diff --git a/ports/ChangeLog.alpha b/ports/ChangeLog.alpha
index 9cd2076..2814559 100644
--- a/ports/ChangeLog.alpha
+++ b/ports/ChangeLog.alpha
@@ -1,3 +1,13 @@
+2013-02-19  Richard Henderson  <rth@redhat.com>
+
+	[BZ #14920]
+	* sysdeps/unix/sysv/linux/alpha/nptl/lowlevellock.h
+	(FUTEX_WAIT_REQUEUE_PI): Define.
+	(FUTEX_CMP_REQUEUE_PI): Likewise.
+	(lll_futex_wait_requeue_pi): Likewise.
+	(lll_futex_timed_wait_requeue_pi): Likewise.
+	(lll_futex_cmp_requeue_pi): Likewise.
+
 2013-02-20  Richard Henderson  <rth@redhat.com>
 
 	* sysdeps/unix/alpha/sysdep.h: Include <errno.h>.
diff --git a/ports/sysdeps/unix/sysv/linux/alpha/nptl/lowlevellock.h b/ports/sysdeps/unix/sysv/linux/alpha/nptl/lowlevellock.h
index e50324c..cf6b8bf 100644
--- a/ports/sysdeps/unix/sysv/linux/alpha/nptl/lowlevellock.h
+++ b/ports/sysdeps/unix/sysv/linux/alpha/nptl/lowlevellock.h
@@ -38,6 +38,8 @@
 #define FUTEX_TRYLOCK_PI	8
 #define FUTEX_WAIT_BITSET	9
 #define FUTEX_WAKE_BITSET	10
+#define FUTEX_WAIT_REQUEUE_PI   11
+#define FUTEX_CMP_REQUEUE_PI    12
 #define FUTEX_PRIVATE_FLAG	128
 #define FUTEX_CLOCK_REALTIME	256
 
@@ -143,8 +145,31 @@
     INTERNAL_SYSCALL_ERROR_P (__ret, __err);				      \
   })
 
+/* Priority Inheritance support.  */
+#define lll_futex_wait_requeue_pi(futexp, val, mutex, private) \
+  lll_futex_timed_wait_requeue_pi (futexp, val, NULL, 0, mutex, private)
 
+#define lll_futex_timed_wait_requeue_pi(futexp, val, timespec, clockbit,      \
+					mutex, private)			      \
+  ({									      \
+    INTERNAL_SYSCALL_DECL (__err);					      \
+    int __op = FUTEX_WAIT_REQUEUE_PI | clockbit;			      \
+									      \
+    INTERNAL_SYSCALL (futex, __err, 5, (futexp),			      \
+		      __lll_private_flag (__op, private),		      \
+		      (val), (timespec), mutex); 			      \
+  })
 
+#define lll_futex_cmp_requeue_pi(futexp, nr_wake, nr_move, mutex, val, priv)  \
+  ({									      \
+    INTERNAL_SYSCALL_DECL (__err);					      \
+    long int __ret;							      \
+									      \
+    __ret = INTERNAL_SYSCALL (futex, __err, 6, (futexp),		      \
+			      __lll_private_flag (FUTEX_CMP_REQUEUE_PI, priv),\
+			      (nr_wake), (nr_move), (mutex), (val));	      \
+    INTERNAL_SYSCALL_ERROR_P (__ret, __err);				      \
+  })
 
 static inline int __attribute__((always_inline))
 __lll_trylock(int *futex)