Merge git://oss.sgi.com:8090/oss/git/xfs-2.6

[pandora-kernel.git] / include / asm-s390 / processor.h

diff --git a/include/asm-s390/processor.h b/include/asm-s390/processor.h
index 8bd14de..c5cbc4b 100644 (file)
--- a/include/asm-s390/processor.h
+++ b/include/asm-s390/processor.h
@@ -191,10 +191,10 @@ extern void show_registers(struct pt_regs *regs);
 extern void show_trace(struct task_struct *task, unsigned long *sp);
 
 unsigned long get_wchan(struct task_struct *p);
-#define __KSTK_PTREGS(tsk) ((struct pt_regs *) \
-        ((unsigned long) tsk->thread_info + THREAD_SIZE - sizeof(struct pt_regs)))
-#define KSTK_EIP(tsk)  (__KSTK_PTREGS(tsk)->psw.addr)
-#define KSTK_ESP(tsk)  (__KSTK_PTREGS(tsk)->gprs[15])
+#define task_pt_regs(tsk) ((struct pt_regs *) \
+        (task_stack_page(tsk) + THREAD_SIZE) - 1)
+#define KSTK_EIP(tsk)  (task_pt_regs(tsk)->psw.addr)
+#define KSTK_ESP(tsk)  (task_pt_regs(tsk)->gprs[15])
 
 /*
  * Give up the time slice of the virtual PU.
@@ -203,7 +203,10 @@ unsigned long get_wchan(struct task_struct *p);
 # define cpu_relax()   asm volatile ("diag 0,0,68" : : : "memory")
 #else /* __s390x__ */
 # define cpu_relax() \
-       asm volatile ("ex 0,%0" : : "i" (__LC_DIAG44_OPCODE) : "memory")
+       do { \
+               if (MACHINE_HAS_DIAG44) \
+                       asm volatile ("diag 0,0,68" : : : "memory"); \
+       } while (0)
 #endif /* __s390x__ */
 
 /*