Update.

	* posix/sched.h: Change prototypes of sched_getaffinity and
	sched_setaffinity.  Define CPU_SET, CPU_CLR, CPU_ISSET, and CPU_ZERO.
	* sysdeps/generic/sched_getaffinity.c: Adjust definition.
	* sysdeps/generic/sched_setaffinity.c: Likewise.
	* sysdeps/generic/bits/sched.h: Define __CPU_SETSIZE, __NCPUBITS,
	__CPUELT, __CPUMASK, cpu_set_t, __cpu_mask, __CPU_ZERO, __CPU_SET,
	__CPU_CLR, and __CPU_ISSET.
	* sysdeps/unix/sysv/linux/bits/sched.h: Likewise.
	* sysdeps/unix/sysv/linux/sched_getaffinity.c: New file.
	* sysdeps/unix/sysv/linux/sched_setaffinity.c: New file.

	* include/atomic.h (atomic_exchange_acq): Renamed from atomic_exchange.
	(atomic_exchange_rel): New #define.
	* sysdeps/ia64/bits/atomic.h: Likewise.
	* sysdeps/i386/i486/bits/atomic.h (atomic_exchange_acq): Renamed from
	atomic_exchange.
	* sysdeps/m68k/m68020/bits/atomic.h: Likewise.
	* sysdeps/powerpc/bits/atomic.h: Likewise.
	* sysdeps/sparc/sparc32/sparcv9/bits/atomic.h: Likewise.
	* sysdeps/sparc/sparc64/bits/atomic.h: Likewise.
	* sysdeps/x86_64/bits/atomic.h: Likewise.
	* csu/tst-atomic.c: Use atomic_exchange_acq instead of atomic_exchange.

13 files changed, 174 insertions, 34 deletions

diff --git a/sysdeps/generic/bits/sched.h b/sysdeps/generic/bits/sched.h
index d0d655d48e..fc754bff51 100644
--- a/sysdeps/generic/bits/sched.h
+++ b/sysdeps/generic/bits/sched.h
@@ -1,6 +1,6 @@
 /* Definitions of constants and data structure for POSIX 1003.1b-1993
    scheduling interface.
-   Copyright (C) 1996, 1997, 2001 Free Software Foundation, Inc.
+   Copyright (C) 1996, 1997, 2001, 2003 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -33,3 +33,36 @@ struct sched_param
 {
   int __sched_priority;
 };
+
+
+/* Size definition for CPU sets.  */
+#define __CPU_SETSIZE	1024
+#define __NCPUBITS	(8 * sizeof (__cpu_mask))
+
+/* Type for array elements in 'cpu_set'.  */
+typedef unsigned long int __cpu_mask;
+
+/* Basic access functions.  */
+#define __CPUELT(cpu)	((cpu) / __NCPUBITS)
+#define __CPUMASK(cpu)	((__cpu_mask) 1 << ((cpu) % __NCPUBITS))
+
+/* Data structure to describe CPU mask.  */
+typedef struct
+{
+  __cpu_mask __bits[__CPU_SETSIZE / __NCPUBITS];
+} cpu_set_t;
+
+/* Access functions for CPU masks.  */
+#define __CPU_ZERO(cpusetp) \
+  do {									      \
+    unsigned int __i;							      \
+    cpu_set *__arr = (cpusetp);						      \
+    for (__i = 0; __i < sizeof (cpu_set) / sizeof (__cpu_mask); ++__i)	      \
+      __arr->__bits[__i] = 0;						      \
+  } while (0)
+#define __CPU_SET(cpu, cpusetp) \
+  ((cpusetp)->__bits[__CPUELT (cpu)] |= __CPUMASK (cpu))
+#define __CPU_CLR(cpu, cpusetp) \
+  ((cpusetp)->__bits[__CPUELT (cpu)] &= ~__CPUMASK (cpu))
+#define __CPU_ISSET(cpu, cpusetp) \
+  (((cpusetp)->__bits[__CPUELT (cpu)] & __CPUMASK (cpu)) != 0)
diff --git a/sysdeps/generic/sched_getaffinity.c b/sysdeps/generic/sched_getaffinity.c
index 5c444cb5c8..b9b7207d3f 100644
--- a/sysdeps/generic/sched_getaffinity.c
+++ b/sysdeps/generic/sched_getaffinity.c
@@ -17,16 +17,15 @@
    02111-1307 USA.  */
 
 #include <errno.h>
-#include <sys/types.h>
 #include <sched.h>
+#include <sys/types.h>
 
 
 /* Retrieve the CPU affinity mask for a particular process.  */
 int
-sched_getaffinity (pid, len, mask)
+sched_getaffinity (pid, cpuset)
      pid_t pid;
-     unsigned int len;
-     unsigned long int *mask;
+     cpu_set_t *cpuset;
 {
   __set_errno (ENOSYS);
   return -1;
diff --git a/sysdeps/generic/sched_setaffinity.c b/sysdeps/generic/sched_setaffinity.c
index e734e70b91..4f85c54a6f 100644
--- a/sysdeps/generic/sched_setaffinity.c
+++ b/sysdeps/generic/sched_setaffinity.c
@@ -23,10 +23,9 @@
 
 /* Retrieve the CPU affinity mask for a particular process.  */
 int
-sched_setaffinity (pid, len, mask)
+sched_setaffinity (pid, mask)
      pid_t pid;
-     unsigned int len;
-     unsigned long int *mask;
+     const cpu_set_t *cpuset;
 {
   __set_errno (ENOSYS);
   return -1;
diff --git a/sysdeps/i386/i486/bits/atomic.h b/sysdeps/i386/i486/bits/atomic.h
index aff8cd9f2a..cb2fcdb0cc 100644
--- a/sysdeps/i386/i486/bits/atomic.h
+++ b/sysdeps/i386/i486/bits/atomic.h
@@ -117,7 +117,7 @@ typedef uintmax_t uatomic_max_t;
 
 
 /* Note that we need no lock prefix.  */
-#define atomic_exchange(mem, newvalue) \
+#define atomic_exchange_acq(mem, newvalue) \
   ({ __typeof (*mem) result;						      \
      if (sizeof (*mem) == 1)						      \
        __asm __volatile ("xchgb %b0, %1"				      \
diff --git a/sysdeps/ia64/bits/atomic.h b/sysdeps/ia64/bits/atomic.h
index ccbd4f81ae..27346675ab 100644
--- a/sysdeps/ia64/bits/atomic.h
+++ b/sysdeps/ia64/bits/atomic.h
@@ -74,17 +74,12 @@ typedef uintmax_t uatomic_max_t;
 				  (long) (newval))
 
 /* Atomically store newval and return the old value.  */
-#define atomic_exchange(mem, value) \
-  ({ __typeof (*mem) __result;						      \
-     if (sizeof (*mem) == 4)						      \
-       __result = __sync_lock_test_and_set_si ((int *) (mem), (int) (value)); \
-     else if (sizeof (*mem) == 8)					      \
-       __result = __sync_lock_test_and_set_di ((long *) (mem),		      \
-					       (long) (value));		      \
-     else								      \
-       abort ();							      \
-     __result; })
-       
+#define atomic_exchange_acq(mem, value) \
+  __sync_lock_test_and_set (mem, value)
+
+#define atomic_exchange_rel(mem, value) \
+  (__sync_synchronize (), __sync_lock_test_and_set (mem, value))
+
 
 #define atomic_exchange_and_add(mem, value) \
   ({ __typeof (*mem) __result;						      \
diff --git a/sysdeps/m68k/m68020/bits/atomic.h b/sysdeps/m68k/m68020/bits/atomic.h
index 6978b27cde..bbffc526a8 100644
--- a/sysdeps/m68k/m68020/bits/atomic.h
+++ b/sysdeps/m68k/m68020/bits/atomic.h
@@ -76,7 +76,7 @@ typedef uintmax_t uatomic_max_t;
 		       : "memory");					      \
      __ret; })
 
-#define atomic_exchange(mem, newvalue) \
+#define atomic_exchange_acq(mem, newvalue) \
   ({ __typeof (*(mem)) __result = *(mem);				      \
      if (sizeof (*(mem)) == 1)						      \
        __asm __volatile ("1: cas%.b %0,%2,%1;"				      \
diff --git a/sysdeps/powerpc/bits/atomic.h b/sysdeps/powerpc/bits/atomic.h
index c33ae564ce..ebac76ab3b 100644
--- a/sysdeps/powerpc/bits/atomic.h
+++ b/sysdeps/powerpc/bits/atomic.h
@@ -19,11 +19,11 @@
    02111-1307 USA.  */
 
 /*
- * Never include sysdeps/powerpc/bits/atomic.h directly. 
- * Alway use include/atomic.h which will include either 
- * sysdeps/powerpc/powerpc32/bits/atomic.h 
- * or 
- * sysdeps/powerpc/powerpc64/bits/atomic.h 
+ * Never include sysdeps/powerpc/bits/atomic.h directly.
+ * Alway use include/atomic.h which will include either
+ * sysdeps/powerpc/powerpc32/bits/atomic.h
+ * or
+ * sysdeps/powerpc/powerpc64/bits/atomic.h
  * as appropriate and which in turn include this file.
  */
 
@@ -44,8 +44,8 @@ typedef uintptr_t uatomicptr_t;
 typedef intmax_t atomic_max_t;
 typedef uintmax_t uatomic_max_t;
 
-/* 
- * Powerpc does not have byte and halfword forms of load and reserve and 
+/*
+ * Powerpc does not have byte and halfword forms of load and reserve and
  * store conditional. So for powerpc we stub out the 8- and 16-bit forms.
  */
 #define __arch_compare_and_exchange_bool_8_acq(mem, newval, oldval) \
@@ -141,7 +141,7 @@ typedef uintmax_t uatomic_max_t;
     __result;								      \
   })
 
-#define atomic_exchange(mem, value) \
+#define atomic_exchange_acq(mem, value) \
   ({									      \
     __typeof (*(mem)) __result;						      \
     if (sizeof (*mem) == 4)						      \
@@ -177,4 +177,3 @@ typedef uintmax_t uatomic_max_t;
        abort ();							      \
     __result;								      \
   })
-
diff --git a/sysdeps/sparc/sparc32/sparcv9/bits/atomic.h b/sysdeps/sparc/sparc32/sparcv9/bits/atomic.h
index bb4e2db961..6d316f37d5 100644
--- a/sysdeps/sparc/sparc32/sparcv9/bits/atomic.h
+++ b/sysdeps/sparc/sparc32/sparcv9/bits/atomic.h
@@ -66,7 +66,7 @@ typedef uintmax_t uatomic_max_t;
 #define __arch_compare_and_exchange_val_64_acq(mem, newval, oldval) \
   (abort (), (__typeof (*mem)) 0)
 
-#define atomic_exchange(mem, newvalue) \
+#define atomic_exchange_acq(mem, newvalue) \
   ({ __typeof (*(mem)) __oldval;					      \
      __typeof (mem) __memp = (mem);					      \
      __typeof (*(mem)) __value = (newvalue);				      \
diff --git a/sysdeps/sparc/sparc64/bits/atomic.h b/sysdeps/sparc/sparc64/bits/atomic.h
index 4df3b2556a..8f97753140 100644
--- a/sysdeps/sparc/sparc64/bits/atomic.h
+++ b/sysdeps/sparc/sparc64/bits/atomic.h
@@ -72,7 +72,7 @@ typedef uintmax_t uatomic_max_t;
 		      "r" (__acev_mem), "0" ((long) (newval)));		      \
   __acev_tmp; })
 
-#define atomic_exchange(mem, newvalue) \
+#define atomic_exchange_acq(mem, newvalue) \
   ({ __typeof (*(mem)) __oldval, __val;					      \
      __typeof (mem) __memp = (mem);					      \
      __typeof (*(mem)) __value = (newvalue);				      \
diff --git a/sysdeps/unix/sysv/linux/bits/sched.h b/sysdeps/unix/sysv/linux/bits/sched.h
index 9aaf96e0ca..63ae0e40f6 100644
--- a/sysdeps/unix/sysv/linux/bits/sched.h
+++ b/sysdeps/unix/sysv/linux/bits/sched.h
@@ -1,6 +1,6 @@
 /* Definitions of constants and data structure for POSIX 1003.1b-1993
    scheduling interface.
-   Copyright (C) 1996,1997,1998,1999,2001,2002 Free Software Foundation, Inc.
+   Copyright (C) 1996-1999,2001,2002,2003 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -86,3 +86,36 @@ struct __sched_param
   };
 # undef __need_schedparam
 #endif
+
+
+/* Size definition for CPU sets.  */
+#define __CPU_SETSIZE	1024
+#define __NCPUBITS	(8 * sizeof (__cpu_mask))
+
+/* Type for array elements in 'cpu_set'.  */
+typedef unsigned long int __cpu_mask;
+
+/* Basic access functions.  */
+#define __CPUELT(cpu)	((cpu) / __NCPUBITS)
+#define __CPUMASK(cpu)	((__cpu_mask) 1 << ((cpu) % __NCPUBITS))
+
+/* Data structure to describe CPU mask.  */
+typedef struct
+{
+  __cpu_mask __bits[__CPU_SETSIZE / __NCPUBITS];
+} cpu_set_t;
+
+/* Access functions for CPU masks.  */
+#define __CPU_ZERO(cpusetp) \
+  do {									      \
+    unsigned int __i;							      \
+    cpu_set *__arr = (cpusetp);						      \
+    for (__i = 0; __i < sizeof (cpu_set) / sizeof (__cpu_mask); ++__i)	      \
+      __arr->__bits[__i] = 0;						      \
+  } while (0)
+#define __CPU_SET(cpu, cpusetp) \
+  ((cpusetp)->__bits[__CPUELT (cpu)] |= __CPUMASK (cpu))
+#define __CPU_CLR(cpu, cpusetp) \
+  ((cpusetp)->__bits[__CPUELT (cpu)] &= ~__CPUMASK (cpu))
+#define __CPU_ISSET(cpu, cpusetp) \
+  (((cpusetp)->__bits[__CPUELT (cpu)] & __CPUMASK (cpu)) != 0)
diff --git a/sysdeps/unix/sysv/linux/sched_getaffinity.c b/sysdeps/unix/sysv/linux/sched_getaffinity.c
new file mode 100644
index 0000000000..12e6e1603a
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/sched_getaffinity.c
@@ -0,0 +1,45 @@
+/* Copyright (C) 2002, 2003 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <errno.h>
+#include <sched.h>
+#include <string.h>
+#include <sysdep.h>
+#include <sys/types.h>
+
+
+#ifdef __NR_sched_getaffinity
+int
+sched_getaffinity (pid, cpuset)
+     pid_t pid;
+     cpu_set_t *cpuset;
+{
+  int res = INLINE_SYSCALL (sched_getaffinity, 3, pid, sizeof (cpu_set_t),
+			    cpuset);
+  if (res != -1)
+    {
+      /* Clean the rest of the memory the kernel didn't do.  */
+      memset ((char *) cpuset + res, '\0', sizeof (cpu_set_t) - res);
+
+      res = 0;
+    }
+  return res;
+}
+#else
+# include <sysdeps/generic/sched_getaffinity.c>
+#endif
diff --git a/sysdeps/unix/sysv/linux/sched_setaffinity.c b/sysdeps/unix/sysv/linux/sched_setaffinity.c
new file mode 100644
index 0000000000..c12c808b78
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/sched_setaffinity.c
@@ -0,0 +1,37 @@
+/* Copyright (C) 2002, 2003 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <errno.h>
+#include <sched.h>
+#include <string.h>
+#include <sysdep.h>
+#include <sys/types.h>
+
+
+#ifdef __NR_sched_setaffinity
+int
+sched_setaffinity (pid, cpuset)
+     pid_t pid;
+     const cpu_set_t *cpuset;
+{
+  return INLINE_SYSCALL (sched_setaffinity, 3, pid, sizeof (cpu_set_t),
+			 cpuset);
+}
+#else
+# include <sysdeps/generic/sched_setaffinity.c>
+#endif
diff --git a/sysdeps/x86_64/bits/atomic.h b/sysdeps/x86_64/bits/atomic.h
index ece260d4d9..f31bedb0b3 100644
--- a/sysdeps/x86_64/bits/atomic.h
+++ b/sysdeps/x86_64/bits/atomic.h
@@ -86,7 +86,7 @@ typedef uintmax_t uatomic_max_t;
 
 
 /* Note that we need no lock prefix.  */
-#define atomic_exchange(mem, newvalue) \
+#define atomic_exchange_acq(mem, newvalue) \
   ({ __typeof (*mem) result;						      \
      if (sizeof (*mem) == 1)						      \
        __asm __volatile ("xchgb %b0, %1"				      \