[PATCH] alpha: task_thread_info()

use task_thread_info() for accesses to thread_info of task in arch/alpha
and include/asm-alpha

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/arch/alpha/kernel/smp.c b/arch/alpha/kernel/smp.c
index da0be34..4b87352 100644
--- a/arch/alpha/kernel/smp.c
+++ b/arch/alpha/kernel/smp.c
@@ -302,7 +302,7 @@
 		 + hwrpb->processor_offset
 		 + cpuid * hwrpb->processor_size);
 	hwpcb = (struct pcb_struct *) cpu->hwpcb;
-	ipcb = &idle->thread_info->pcb;
+	ipcb = &task_thread_info(idle)->pcb;
 
 	/* Initialize the CPU's HWPCB to something just good enough for
 	   us to get started.  Immediately after starting, we'll swpctx