From: Marcus Shawcroft <marcus.shawcroft@linaro.org>
Date: Tue, 17 Dec 2013 13:29:04 +0000 (+0000)
Subject: [AArch64] Implement FUTEX_*_REQUEUE_PI
X-Git-Tag: upstream/2.20~1184
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=0f197fe5b65c6df1a3a0b6b36383d4babec85bd1;p=platform%2Fupstream%2Flinaro-glibc.git

[AArch64] Implement FUTEX_*_REQUEUE_PI
---

diff --git a/ports/ChangeLog.aarch64 b/ports/ChangeLog.aarch64
index 09645c3..b1f6729 100644
--- a/ports/ChangeLog.aarch64
+++ b/ports/ChangeLog.aarch64
@@ -1,5 +1,14 @@
 2013-12-17  Marcus Shawcroft  <marcus.shawcroft@linaro.org>
 
+	* sysdeps/unix/sysv/linux/aarch64/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.
+
+2013-12-17  Marcus Shawcroft  <marcus.shawcroft@linaro.org>
+
 	* sysdeps/aarch64/libm-test-ulps: Regenerated.
 
 2013-12-17  Marcus Shawcroft  <marcus.shawcroft@linaro.org>
diff --git a/ports/sysdeps/unix/sysv/linux/aarch64/nptl/lowlevellock.h b/ports/sysdeps/unix/sysv/linux/aarch64/nptl/lowlevellock.h
index 52f8a7a..851c85d 100644
--- a/ports/sysdeps/unix/sysv/linux/aarch64/nptl/lowlevellock.h
+++ b/ports/sysdeps/unix/sysv/linux/aarch64/nptl/lowlevellock.h
@@ -37,6 +37,8 @@
 #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
 
@@ -143,6 +145,35 @@
   })
 
 
+/* 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);					      \
+    long int __ret;							      \
+    int __op = FUTEX_WAIT_REQUEUE_PI | clockbit;			      \
+									      \
+    __ret = INTERNAL_SYSCALL (futex, __err, 5, (futexp),		      \
+			      __lll_private_flag (__op, private),	      \
+			      (val), (timespec), mutex);		      \
+    INTERNAL_SYSCALL_ERROR_P (__ret, __err) ? -__ret : __ret;		      \
+  })
+
+#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);				      \
+  })
+
+
 #define lll_trylock(lock)	\
   atomic_compare_and_exchange_val_acq(&(lock), 1, 0)