Fix nptl/tst-cond1{6,7,8}.c on 32-bit with many cpus.

	* tst-cond16.c (do_test): Use a thread stack size which is either
	PTHREAD_STACK_MIN or the page size, whichever is larger.
	* tst-cond18.c (do_test): Likewise.

nptl/ChangeLog

@@ -1,3 +1,9 @@
+2012-03-27  David S. Miller  <davem@davemloft.net>
+
+	* tst-cond16.c (do_test): Use a thread stack size which is either
+	PTHREAD_STACK_MIN or the page size, whichever is larger.
+	* tst-cond18.c (do_test): Likewise.
+
 2012-03-19  H.J. Lu  <hongjiu.lu@intel.com>
 
 	* sysdeps/x86_64/pthreaddef.h (CURRENT_STACK_FRAME): Use

nptl/tst-cond16.c

@@ -76,9 +76,15 @@ do_test (void)
   count *= 4;
 
   pthread_t th[count];
-  int i, ret;
+  pthread_attr_t attr;
+  int i, ret, sz;
+  pthread_attr_init (&attr);
+  sz = __getpagesize ();
+  if (sz < PTHREAD_STACK_MIN)
+	  sz = PTHREAD_STACK_MIN;
+  pthread_attr_setstacksize (&attr, sz);
   for (i = 0; i < count; ++i)
-    if ((ret = pthread_create (&th[i], NULL, tf, NULL)) != 0)
+    if ((ret = pthread_create (&th[i], &attr, tf, NULL)) != 0)
       {
 	errno = ret;
 	printf ("pthread_create %d failed: %m\n", i);

nptl/tst-cond18.c

@@ -87,10 +87,16 @@ do_test (void)
   count *= 8;
 
   pthread_t th[count + 1];
-  int i, ret;
+  pthread_attr_t attr;
+  int i, ret, sz;
+  pthread_attr_init (&attr);
+  sz = __getpagesize ();
+  if (sz < PTHREAD_STACK_MIN)
+	  sz = PTHREAD_STACK_MIN;
+  pthread_attr_setstacksize (&attr, sz);
 
   for (i = 0; i <= count; ++i)
-    if ((ret = pthread_create (&th[i], NULL, tf, (void *) (long) i)) != 0)
+    if ((ret = pthread_create (&th[i], &attr, tf, (void *) (long) i)) != 0)
       {
 	errno = ret;
 	printf ("pthread_create %d failed: %m\n", i);