Update.

	* sysdeps/unix/sysv/linux/smp.h: New file.
	* sysdeps/unix/sysv/linux/sh/smp.h: New file.
	* init.c: Define __is_smp.
	(__pthread_initialize_minimal_internal): Call is_smp_system to
	initialize __is_smp.
	* pthreadP.h: Declare __is_smp.
	Define MAX_ADAPTIVE_COUNT is necessary.
	* pthread_mutex_init.c: Add comment regarding __spins field.
	* pthread_mutex_lock.c: Implement adaptive mutex type.
	* pthread_mutex_timedlock.c: Likewise.
	* sysdeps/unix/sysv/linux/pthread_mutex_cond_lock.c: Likewise.
	* sysdeps/unix/sysv/linux/alpha/bits/pthreadtypes.h (pthread_mutex_t):
	Add __spins field.
	* sysdeps/unix/sysv/linux/i386/bits/pthreadtypes.h: Likewise.
	* sysdeps/unix/sysv/linux/ia64/bits/pthreadtypes.h: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/bits/pthreadtypes.h: Likewise.
	* sysdeps/unix/sysv/linux/sh/bits/pthreadtypes.h: Likewise.
	* sysdeps/unix/sysv/linux/s390/bits/pthreadtypes.h: Likewise.
	* sysdeps/unix/sysv/linux/sparc/bits/pthreadtypes.h: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/bits/pthreadtypes.h: Likewise.
	* sysdeps/unix/sysv/linux/alpha/bits/pthreadtypes.h: Define
	lll_mutex_cond_trylock.
	* sysdeps/unix/sysv/linux/powerpc/bits/pthreadtypes.h: Likewise.
	* sysdeps/unix/sysv/linux/sh/bits/pthreadtypes.h: Likewise.
	* sysdeps/unix/sysv/linux/s390/bits/pthreadtypes.h: Likewise.
	* sysdeps/unix/sysv/linux/sparc/bits/pthreadtypes.h: Likewise.
	* sysdeps/unix/sysv/linux/i386/bits/pthreadtypes.h: Likewise.
	Define BUSY_WAIT_NOP.
	* sysdeps/unix/sysv/linux/ia64/bits/pthreadtypes.h: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/bits/pthreadtypes.h: Likewise.

	* tst-mutex5.c: Add support for testing adaptive mutexes.
	* tst-mutex7.c: Likewise.
	* tst-mutex5a.c: New file.
	* tst-mutex7a.c: New file.
	* Makefile (tests): Add tst-mutex5a and tst-mutex7a.

2 files changed, 12 insertions, 3 deletions

diff --git a/nptl/sysdeps/unix/sysv/linux/sparc/bits/pthreadtypes.h b/nptl/sysdeps/unix/sysv/linux/sparc/bits/pthreadtypes.h
index b947439e34..d123fd059f 100644
--- a/nptl/sysdeps/unix/sysv/linux/sparc/bits/pthreadtypes.h
+++ b/nptl/sysdeps/unix/sysv/linux/sparc/bits/pthreadtypes.h
@@ -1,5 +1,5 @@
 /* Machine-specific pthread type layouts.  SPARC version.
-   Copyright (C) 2003 Free Software Foundation, Inc.
+   Copyright (C) 2003, 2004 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Jakub Jelinek <jakub@redhat.com>, 2003.
 
@@ -76,6 +76,7 @@ typedef union
 #if __WORDSIZE != 64
     unsigned int __nusers;
 #endif
+    int __spins;
   } __data;
   char __size[__SIZEOF_PTHREAD_MUTEX_T];
   long int __align;
diff --git a/nptl/sysdeps/unix/sysv/linux/sparc/lowlevellock.h b/nptl/sysdeps/unix/sysv/linux/sparc/lowlevellock.h
index 76ec431a6c..05bc5a2974 100644
--- a/nptl/sysdeps/unix/sysv/linux/sparc/lowlevellock.h
+++ b/nptl/sysdeps/unix/sysv/linux/sparc/lowlevellock.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 2003 Free Software Foundation, Inc.
+/* Copyright (C) 2003, 2004 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Jakub Jelinek <jakub@redhat.com>, 2003.
 
@@ -86,6 +86,14 @@ __lll_mutex_trylock (int *futex)
 }
 #define lll_mutex_trylock(futex) __lll_mutex_trylock (&(futex))
 
+static inline int
+__attribute__ ((always_inline))
+__lll_mutex_cond_trylock (int *futex)
+{
+  return atomic_compare_and_exchange_val_acq (futex, 2, 0) != 0;
+}
+#define lll_mutex_cond_trylock(futex) __lll_mutex_cond_trylock (&(futex))
+
 
 extern void __lll_lock_wait (int *futex) attribute_hidden;
 
@@ -124,7 +132,7 @@ __lll_mutex_timedlock (int *futex, const struct timespec *abstime)
 {
   int val = atomic_compare_and_exchange_val_acq (futex, 1, 0);
   int result = 0;
-  
+
   if (__builtin_expect (val != 0, 0))
     result = __lll_timedlock_wait (futex, abstime);
   return result;