tile: Add priority inheritance futex support

diff --git a/ports/ChangeLog.tile b/ports/ChangeLog.tile
index a473b3084712fca894ee28935b9b7199a84929c0..6184bf6a0b55bbb7226866f08d3998dc68e1ceb6 100644 (file)
--- a/ports/ChangeLog.tile
+++ b/ports/ChangeLog.tile
@@ -1,3 +1,12 @@
+2013-02-28  Chris Metcalf  <cmetcalf@tilera.com>
+
+       * sysdeps/unix/sysv/linux/tile/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.
+
 2013-02-18  Siddhesh Poyarekar  <siddhesh@redhat.com>
 
        * sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/nptl/libc.abilist:

diff --git a/ports/sysdeps/unix/sysv/linux/tile/nptl/lowlevellock.h b/ports/sysdeps/unix/sysv/linux/tile/nptl/lowlevellock.h
index e6f5d1905ecb08274a0ddd878ff82a79eb04f891..a9822ec9602f2f56170ae64f98d30254aebb38e0 100644 (file)
--- a/ports/sysdeps/unix/sysv/linux/tile/nptl/lowlevellock.h
+++ b/ports/sysdeps/unix/sysv/linux/tile/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
 
@@ -139,7 +141,33 @@
     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);                                           \
+    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);                                 \
+  })
+
+#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))