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, 16 insertions, 1 deletions

diff --git a/nptl/sysdeps/unix/sysv/linux/i386/bits/pthreadtypes.h b/nptl/sysdeps/unix/sysv/linux/i386/bits/pthreadtypes.h
index fc0a54c036..f998138d7e 100644
--- a/nptl/sysdeps/unix/sysv/linux/i386/bits/pthreadtypes.h
+++ b/nptl/sysdeps/unix/sysv/linux/i386/bits/pthreadtypes.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 2002, 2003 Free Software Foundation, Inc.
+/* Copyright (C) 2002, 2003, 2004 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
@@ -56,6 +56,7 @@ typedef union
        binary compatibility.  */
     int __kind;
     unsigned int __nusers;
+    int __spins;
   } __data;
   char __size[__SIZEOF_PTHREAD_MUTEX_T];
   long int __align;
diff --git a/nptl/sysdeps/unix/sysv/linux/i386/lowlevellock.h b/nptl/sysdeps/unix/sysv/linux/i386/lowlevellock.h
index a9823d8d4b..b86f11c9b4 100644
--- a/nptl/sysdeps/unix/sysv/linux/i386/lowlevellock.h
+++ b/nptl/sysdeps/unix/sysv/linux/i386/lowlevellock.h
@@ -40,6 +40,7 @@
 /* Initializer for compatibility lock.  */
 #define LLL_MUTEX_LOCK_INITIALIZER		(0)
 #define LLL_MUTEX_LOCK_INITIALIZER_LOCKED	(1)
+#define LLL_MUTEX_LOCK_INITIALIZER_WAITERS	(2)
 
 
 #ifdef PIC
@@ -60,6 +61,9 @@
 # define LLL_ENTER_KERNEL	"int $0x80\n\t"
 #endif
 
+/* Delay in spinlock loop.  */
+#define BUSY_WAIT_NOP          asm ("rep; nop")
+
 
 #define lll_futex_wait(futex, val) \
   do {									      \
@@ -117,6 +121,16 @@ extern int __lll_mutex_unlock_wake (int *__futex)
      ret; })
 
 
+#define lll_mutex_cond_trylock(futex) \
+  ({ int ret;								      \
+     __asm __volatile (LOCK_INSTR "cmpxchgl %2, %1"			      \
+		       : "=a" (ret), "=m" (futex)			      \
+		       : "r" (LLL_MUTEX_LOCK_INITIALIZER_WAITERS),	      \
+			  "m" (futex), "0" (LLL_MUTEX_LOCK_INITIALIZER)	      \
+		       : "memory");					      \
+     ret; })
+
+
 #define lll_mutex_lock(futex) \
   (void) ({ int ignore1, ignore2;					      \
 	    __asm __volatile (LOCK_INSTR "cmpxchgl %1, %2\n\t"		      \