Add priority inheritance futex support on sparc.

	* sysdeps/unix/sysv/linux/sparc/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.

diff --git a/nptl/ChangeLog b/nptl/ChangeLog
index 5f591b0..2a67608 100644 (file)
--- a/nptl/ChangeLog
+++ b/nptl/ChangeLog
@@ -1,3 +1,12 @@
+2013-02-21  David S. Miller  <davem@davemloft.net>
+
+       * sysdeps/unix/sysv/linux/sparc/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.
+
 2013-02-21  Carlos O'Donell  <carlos@redhat.com>
 
        * sysdeps/unix/sysv/linux/fork.c: Fix comment typo.

diff --git a/nptl/sysdeps/unix/sysv/linux/sparc/lowlevellock.h b/nptl/sysdeps/unix/sysv/linux/sparc/lowlevellock.h
index c88ec16..2d7d9f8 100644 (file)
--- a/nptl/sysdeps/unix/sysv/linux/sparc/lowlevellock.h
+++ b/nptl/sysdeps/unix/sysv/linux/sparc/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
 
@@ -157,6 +159,34 @@ extern void __cpu_relax (void);
   })
 #endif
 
+/* 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);                                 \
+  })
+
 static inline int
 __attribute__ ((always_inline))
 __lll_trylock (int *futex)