Update.

* csu/Makefile ($(objpfx)version-info.h): Get OS name from uname and
	only fall back on using Linux.

linuxthreads/ChangeLog

@@ -1,5 +1,9 @@
 2000-04-15  Ulrich Drepper  <drepper@redhat.com>
 
+	* pthread.c (pthread_yield): New function.
+	* sysdeps/pthread/pthread.h (pthread_yield): Add prototype.
+	* Versions [libpthread] (GLIBC_2.2): Add pthread_yield.
+
 	* pthread.c (pthread_initialize): Avoid a bit more code if
 	realtime signals are known to exist.
 

linuxthreads/Versions

@@ -135,5 +135,8 @@ libpthread {
     pthread_spin_destroy; pthread_spin_init; pthread_spin_lock;
     pthread_spin_trylock; pthread_spin_unlock;
     pthread_getcpuclockid;
+
+    # Extensions.
+    pthread_yield;
   }
 }

linuxthreads/pthread.c

@@ -634,6 +634,13 @@ int pthread_getschedparam(pthread_t thread, int *policy,
   return 0;
 }
 
+int __pthread_yield ()
+{
+  /* For now this is equivalent with the POSIX call.  */
+  return sched_yield ();
+}
+weak_alias (__pthread_yield, pthread_yield)
+
 /* Process-wide exit() request */
 
 static void pthread_exit_process(int retcode, void *arg)

linuxthreads/sysdeps/pthread/pthread.h

@@ -272,6 +272,14 @@ extern int pthread_getconcurrency (void) __THROW;
 extern int pthread_setconcurrency (int __level) __THROW;
 #endif
 
+#ifdef __USE_GNU
+/* Yield the processor to another thread or process.
+   This function is similar to the POSIX `sched_yield' function but
+   might be differently implemented in the case of a m-on-n thread
+   implementation.  */
+extern int pthread_yield (void) __THROW;
+#endif
+
 /* Functions for mutex handling.  */
 
 /* Initialize MUTEX using attributes in *MUTEX_ATTR, or use the