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authorDavid S. Miller <davem@davemloft.net>2013-02-21 15:20:27 -0800
committerDavid S. Miller <davem@davemloft.net>2013-02-21 15:20:27 -0800
commit2b7ae1b27f011919dbd6e87bc76c6f76b66ab186 (patch)
tree76ece3be32b84535392032136826aec7753c323b /nptl
parent2366713d874342c94f9362b0d6b2461e1c68dbc3 (diff)
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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.
Diffstat (limited to 'nptl')
-rw-r--r--nptl/ChangeLog9
-rw-r--r--nptl/sysdeps/unix/sysv/linux/sparc/lowlevellock.h30
2 files changed, 39 insertions, 0 deletions
diff --git a/nptl/ChangeLog b/nptl/ChangeLog
index 5f591b0487..2a676085ad 100644
--- 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 c88ec16434..2d7d9f82f6 100644
--- 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)